Add kalender column rename from eindeutige_gruppen_id to eindeutige_kalender_gruppen_id

# Conflicts:
#	public/js/components/Calendar/Base/DragAndDrop.js
#	public/js/components/Calendar/Base/Grid/Line.js
#	public/js/composables/EventLoader.js

application/config/Events.php

@@ -33,5 +33,27 @@ Events::on('loadRenderers', function ($renderers) {
 	);
 });
 
+//Tempus Renderers:
+Events::on('loadTempusRenderers', function ($renderers) {
+	$fhc_core_renderers =& $renderers();
+	$fhc_core_renderers["reservierung"] = array(
+		'calendarEvent' => absoluteJsImportUrl('public/js/components/Tempus/Renderer/Reservierungen/calendarEvent.js'),
+		'modalTitle' => absoluteJsImportUrl('public/js/components/Tempus/Renderer/Reservierungen/modalTitle.js'),
+		'modalContent' => absoluteJsImportUrl('public/js/components/Tempus/Renderer/Reservierungen/modalContent.js'),
+		'calendarEventStyles' => APP_ROOT . 'public/css/Cis4/CoreCalendarEvents.css'
+	);
+});
+
+Events::on('loadTempusRenderers', function ($renderers) {
+	$fhc_core_renderers =& $renderers();
+	$fhc_core_renderers["lehreinheit"] = array(
+		'calendarEvent' => absoluteJsImportUrl('public/js/components/Tempus/Renderer/Lehreinheit/calendarEvent.js'),
+		'modalTitle' => absoluteJsImportUrl('public/js/components/Tempus/Renderer/Lehreinheit/modalTitle.js'),
+		'modalContent' => absoluteJsImportUrl('public/js/components/Tempus/Renderer/Lehreinheit/modalContent.js'),
+		'calendarEventStyles' => APP_ROOT . 'public/css/Cis4/CoreCalendarEvents.css'
+	);
+});
+
+
 
 

application/config/routes.php

@@ -122,9 +122,21 @@ $route['api/frontend/v1/stv/[sS]tudents/([WS]S[0-9]{4})/prestudent/(:num)'] = 'a
 // // (studiensemester_kurzbz)/person/(person_id)
 $route['api/frontend/v1/stv/[sS]tudents/([WS]S[0-9]{4})/person/(:num)'] = 'api/frontend/v1/stv/Students/getPerson/$1/$2';
 
+
+$route['lvplan/caldav'] = 'LvPlanCalDAV';
+$route['lvplan/caldav/.*'] = 'LvPlanCalDAV';
+$route['lvplan/ical/subscription/google'] = 'LvPlanICALSubscription';
+$route['lvplan/ical/download'] = 'LvPlanICALDownload';
+$route['lvplan/csv/download'] = 'LvPlanCSVDownload';
+$route['lvplan/excel/download'] = 'LvPlanExcelDownload';
+$route['lvplan/html/preview'] = 'LvPlanHTMLPreview';
+$route['lvplan/html/detail'] = 'LvPlanHTMLDetail';
+
 // load routes from extensions, also look for environment-specific configs
 $subdirs = ['application/config/extensions', 'application/config/' . ENVIRONMENT . '/extensions'];
 
+$route['api/frontend/v1/tempus/Tags/getTagsByCalendar/(:num)'] = 'api/frontend/v1/tempus/Tags/getTagsByCalendar/$1';
+
 foreach($subdirs as $subdir)
 {
 	if(is_dir($subdir))

application/config/tempus.php

@@ -0,0 +1,12 @@
+<?php
+
+$config['send_update_mails'] = false;
+$config['calendar_start'] = 7;
+$config['calendar_end'] = 23;
+
+
+$config['tempus_tags'] = [
+	'prioone' => ['readonly' => false],
+	'priotwo' => ['readonly' => true],
+	'hinweis' => ['readonly' => false],
+];

application/controllers/LvPlanCSVDownload.php

@@ -0,0 +1,311 @@
+<?php
+
+if (!defined('BASEPATH'))
+	exit('No direct script access allowed');
+
+require_once(FHCPATH.'include/functions.inc.php');
+
+class LvPlanCSVDownload extends Auth_Controller
+{
+	const MAX_DATE_RANGE = 34560000; // 400 days
+
+	/**
+	 * Object initialization.
+	 */
+	public function __construct()
+	{
+		parent::__construct([
+			'index' => ['basis/cis:r']
+		]);
+
+		$this->load->model('person/Benutzer_model', 'BenutzerModel');
+		$this->load->model('ressource/Ort_model', 'OrtModel');
+		$this->load->model('organisation/Studiengang_model', 'StudiengangModel');
+		$this->load->model('organisation/Studiensemester_model', 'StudiensemesterModel');
+		$this->loadPhrases(array('global', 'lehre', 'ui'));
+	}
+
+	/**
+	 * Serves an authenticated CSV file download.
+	 *
+	 * @return void
+	 */
+	public function index()
+	{
+		$type = $this->getType();
+		$uid = getAuthUID();
+		$ortKurzbz = null;
+		$verbandFilters = null;
+		if ($type === 'ort')
+			$ortKurzbz = $this->getRoom();
+		elseif ($type === 'verband')
+			$verbandFilters = $this->getVerbandFilters();
+		else
+		{
+			$uid = $this->getUid();
+			$this->authorizeUid($uid);
+			$this->validateUid($uid);
+		}
+		$target = $this->getTarget();
+		list($begin, $ende) = $this->getDateRange();
+
+		$this->load->library('LvPlanCSVLib');
+		$content = $this->lvplancsvlib->getContent(
+			$uid,
+			$begin,
+			$ende,
+			$type,
+			$target,
+			$ortKurzbz,
+			$verbandFilters
+		);
+
+		$filename = $this->getFilename($begin, $ende, $target);
+
+		$this->output
+			->set_content_type('text/csv', 'UTF-8')
+			->set_header('Content-Disposition: attachment; filename="'.$filename.'"')
+			->set_header('Pragma: public')
+			->set_header('Expires: 0')
+			->set_output($content);
+	}
+
+	/**
+	 * @return string Requested timetable type.
+	 */
+	private function getType()
+	{
+		$type = $this->input->get('type', true);
+
+		if (!in_array($type, array('student', 'lektor', 'ort', 'verband'), true))
+			show_error('Ungueltiger Parameter: type', 400);
+
+		return $type;
+	}
+
+	/**
+	 * @return string Requested user UID.
+	 */
+	private function getUid()
+	{
+		$uid = $this->input->get('pers_uid', true);
+
+		if (!is_string($uid) || $uid === '' || !check_utf8($uid))
+			show_error('Ungueltiger Parameter: pers_uid', 400);
+
+		return $uid;
+	}
+
+	/**
+	 * @return string Requested room identifier.
+	 */
+	private function getRoom()
+	{
+		$ortKurzbz = $this->input->get('ort_kurzbz', true);
+		if (!is_string($ortKurzbz) || $ortKurzbz === '' || !check_utf8($ortKurzbz))
+			show_error('Ungueltiger Parameter: ort_kurzbz', 400);
+
+		$this->OrtModel->addSelect('ort_kurzbz');
+		$room = $this->OrtModel->load($ortKurzbz);
+		if (isError($room))
+			show_error(getError($room), 500);
+		if (!hasData($room))
+			show_error('Ungueltiger Parameter: ort_kurzbz', 400);
+
+		return $ortKurzbz;
+	}
+
+	/**
+	 * @return array Requested Lehrverband filters.
+	 */
+	private function getVerbandFilters()
+	{
+		$stgKz = $this->getInteger('stg_kz', true);
+		$semester = $this->getInteger('sem', false, true);
+		$verband = $this->getOptionalFilter('ver');
+		$gruppe = $this->getOptionalFilter('grp');
+
+		$this->StudiengangModel->addSelect('studiengang_kz');
+		$studiengang = $this->StudiengangModel->load($stgKz);
+		if (isError($studiengang))
+			show_error(getError($studiengang), 500);
+		if (!hasData($studiengang))
+			show_error('Ungueltiger Parameter: stg_kz', 400);
+
+		return array(
+			'stg_kz' => $stgKz,
+			'sem' => $semester,
+			'ver' => $verband,
+			'grp' => $gruppe
+		);
+	}
+
+	private function getInteger($name, $signed, $optional = false)
+	{
+		$value = $this->input->get($name, true);
+		if ($optional && ($value === null || $value === ''))
+			return null;
+
+		$pattern = $signed ? '/^-?\d+$/' : '/^\d+$/';
+		if (!is_string($value) || !preg_match($pattern, $value))
+			show_error('Ungueltiger Parameter: '.$name, 400);
+
+		$integer = filter_var($value, FILTER_VALIDATE_INT);
+		if ($integer === false || (!$signed && $integer < 0))
+			show_error('Ungueltiger Parameter: '.$name, 400);
+
+		return $integer;
+	}
+
+	private function getOptionalFilter($name)
+	{
+		$value = $this->input->get($name, true);
+		if ($value === null || $value === '' || $value === '0')
+			return null;
+		if (!is_string($value)
+			|| !check_utf8($value)
+			|| mb_strlen($value) > 20
+			|| !preg_match('/^[[:alnum:]_-]+$/u', $value))
+		{
+			show_error('Ungueltiger Parameter: '.$name, 400);
+		}
+
+		return $value;
+	}
+
+	/**
+	 * @return string|null Requested CSV target.
+	 */
+	private function getTarget()
+	{
+		$target = $this->input->get('target', true);
+
+		if ($target !== null && $target !== 'outlook')
+			show_error('Ungueltiger Parameter: target', 400);
+
+		return $target;
+	}
+
+	/**
+	 * Validates and expands the requested range to complete weeks.
+	 *
+	 * @return array{0: int, 1: int} Begin and end timestamps.
+	 */
+	private function getDateRange()
+	{
+		$begin = $this->getTimestamp('begin');
+		$ende = $this->getTimestamp('ende');
+
+		if ($ende < $begin)
+			show_error('Ungueltiger Datumsbereich', 400);
+
+		if ($ende - $begin > self::MAX_DATE_RANGE)
+			show_error('Datumsbereich zu gross', 400);
+
+		$begin = strtotime('monday this week', $begin);
+		$ende = strtotime('sunday this week', $ende);
+
+		return array($begin, $ende);
+	}
+
+	/**
+	 * Builds the CSV download filename.
+	 *
+	 * @param int $begin Range start timestamp.
+	 * @param int $ende Range end timestamp.
+	 * @param string|null $target Requested CSV target.
+	 * @return string Filename.
+	 */
+	private function getFilename($begin, $ende, $target)
+	{
+		$studiensemester = $this->getStudiensemester($begin, $ende);
+
+		$filename = $this->p->t('global', 'termine');
+		if ($studiensemester !== null)
+			$filename .= '_'.$studiensemester->studiensemester_kurzbz;
+		$filename .= '-'.date('Ymd');
+		if ($target === 'outlook')
+			$filename .= '_outlook';
+		$filename .= '.csv';
+
+		return $filename;
+	}
+
+	/**
+	 * Gets the study semester covered by the requested date range.
+	 *
+	 * @param int $begin Range start timestamp.
+	 * @param int $ende Range end timestamp.
+	 * @return object|null Study semester, if one overlaps the range.
+	 */
+	private function getStudiensemester($begin, $ende)
+	{
+		$semesterRange = $this->StudiensemesterModel->getByDateRange(
+			date('Y-m-d', $begin),
+			date('Y-m-d', $ende)
+		);
+
+		if (isError($semesterRange) || !hasData($semesterRange))
+			return null;
+
+		$studiensemester = current(getData($semesterRange));
+
+		return $studiensemester;
+	}
+
+	/**
+	 * @param string $name GET parameter name.
+	 * @return int Unix timestamp.
+	 */
+	private function getTimestamp($name)
+	{
+		$value = $this->input->get($name, true);
+
+		if (!is_string($value) || !ctype_digit($value))
+			show_error('Ungueltiger Parameter: '.$name, 400);
+
+		$timestamp = filter_var(
+			$value,
+			FILTER_VALIDATE_INT,
+			array('options' => array('min_range' => 0))
+		);
+
+		if ($timestamp === false)
+			show_error('Ungueltiger Parameter: '.$name, 400);
+
+		return $timestamp;
+	}
+
+	/**
+	 * Ensures access to another user's timetable is explicitly permitted.
+	 *
+	 * @param string $uid Requested user UID.
+	 * @return void
+	 */
+	private function authorizeUid($uid)
+	{
+		if ($uid !== getAuthUID()
+			&& !$this->permissionlib->isBerechtigt('basis/other_lv_plan'))
+		{
+			show_error('Forbidden', 403);
+		}
+	}
+
+	/**
+	 * Ensures the requested user exists.
+	 *
+	 * @param string $uid Requested user UID.
+	 * @return void
+	 */
+	private function validateUid($uid)
+	{
+		$this->BenutzerModel->addSelect('uid');
+		$user = $this->BenutzerModel->load(array($uid));
+
+		if (isError($user))
+			show_error(getError($user), 500);
+
+		if (!hasData($user))
+			show_error('Ungueltiger Parameter: pers_uid', 400);
+	}
+}

application/controllers/LvPlanCalDAV.php

@@ -0,0 +1,58 @@
+<?php
+
+if (! defined('BASEPATH')) exit('No direct script access allowed');
+
+/**
+ */
+class LvPlanCalDAV extends FHC_Controller
+{
+	/**
+	 * Constructor
+	 */
+	public function __construct()
+	{
+        parent::__construct();
+		$this->load->library('sabredav/SabreDAVAuthLib');
+        $this->load->library('sabredav/SabreDAVCalDAVLib');
+	}
+
+	// -----------------------------------------------------------------------------------------------------------------
+	// Public methods
+	public function index()
+	{
+       
+        $authBackend = new SabreDAVAuthLib();
+        $principalBackend = new SabreDAVACLPrincipalBackend($authBackend);
+        $calendarBackend = new SabreDAVCalDAVBackend($authBackend);
+
+        $tree = array(
+            new \Sabre\CalDAV\Principal\Collection($principalBackend),
+            new \Sabre\CalDAV\CalendarRoot($principalBackend, $calendarBackend)
+        );
+
+        $server = new \Sabre\DAV\Server($tree);
+
+        $baseUri = '/' . implode('/', array_filter([
+            trim(BASE_LOCATION, '/'),
+            trim($this->config->item('index_page'), '/'),
+            'lvplan',
+            'caldav'
+        ]));
+        $server->setBaseUri($baseUri);
+
+        $authBackend->setRealm('SabreDAV');
+        $authPlugin = new \Sabre\DAV\Auth\Plugin($authBackend);
+        $server->addPlugin($authPlugin);
+
+        $caldavPlugin = new \Sabre\CalDAV\Plugin();
+        $server->addPlugin($caldavPlugin);
+
+        $aclPlugin = new \Sabre\DAVACL\Plugin();
+        $server->addPlugin($aclPlugin);
+
+        $browser = new \Sabre\DAV\Browser\Plugin();
+        $server->addPlugin($browser);
+
+        $server->exec();
+	}
+}

application/controllers/LvPlanExcelDownload.php

@@ -0,0 +1,292 @@
+<?php
+
+if (!defined('BASEPATH'))
+	exit('No direct script access allowed');
+
+require_once(FHCPATH.'include/functions.inc.php');
+
+class LvPlanExcelDownload extends Auth_Controller
+{
+	const MAX_DATE_RANGE = 34560000; // 400 days
+
+	/**
+	 * Object initialization.
+	 */
+	public function __construct()
+	{
+		parent::__construct([
+			'index' => ['basis/cis:r']
+		]);
+
+		$this->load->model('person/Benutzer_model', 'BenutzerModel');
+		$this->load->model('ressource/Ort_model', 'OrtModel');
+		$this->load->model('organisation/Studiengang_model', 'StudiengangModel');
+		$this->load->model('organisation/Studiensemester_model', 'StudiensemesterModel');
+		$this->loadPhrases(array('global'));
+	}
+
+	/**
+	 * Serves an authenticated Excel file download.
+	 *
+	 * @return void
+	 */
+	public function index()
+	{
+		$type = $this->getType();
+		$uid = getAuthUID();
+		$ortKurzbz = null;
+		$verbandFilters = null;
+		if ($type === 'ort')
+			$ortKurzbz = $this->getRoom();
+		elseif ($type === 'verband')
+			$verbandFilters = $this->getVerbandFilters();
+		else
+		{
+			$uid = $this->getUid();
+			$this->authorizeUid($uid);
+			$this->validateUid($uid);
+		}
+		list($begin, $ende) = $this->getDateRange();
+
+		$this->load->library('LvPlanExcelLib');
+		$content = $this->lvplanexcellib->getContent(
+			$uid,
+			$begin,
+			$ende,
+			$type,
+			$ortKurzbz,
+			$verbandFilters
+		);
+
+		$filename = $this->getFilename($begin, $ende);
+
+		$this->output
+			->set_content_type('application/vnd.ms-excel')
+			->set_header('Content-Disposition: attachment; filename="'.$filename.'"')
+			->set_header('Pragma: public')
+			->set_header('Expires: 0')
+			->set_output($content);
+	}
+
+	/**
+	 * @return string Requested timetable type.
+	 */
+	private function getType()
+	{
+		$type = $this->input->get('type', true);
+
+		if (!in_array($type, array('student', 'lektor', 'ort', 'verband'), true))
+			show_error('Ungueltiger Parameter: type', 400);
+
+		return $type;
+	}
+
+	/**
+	 * @return string Requested user UID.
+	 */
+	private function getUid()
+	{
+		$uid = $this->input->get('pers_uid', true);
+
+		if (!is_string($uid) || $uid === '' || !check_utf8($uid))
+			show_error('Ungueltiger Parameter: pers_uid', 400);
+
+		return $uid;
+	}
+
+	/**
+	 * @return string Requested room identifier.
+	 */
+	private function getRoom()
+	{
+		$ortKurzbz = $this->input->get('ort_kurzbz', true);
+		if (!is_string($ortKurzbz) || $ortKurzbz === '' || !check_utf8($ortKurzbz))
+			show_error('Ungueltiger Parameter: ort_kurzbz', 400);
+
+		$this->OrtModel->addSelect('ort_kurzbz');
+		$room = $this->OrtModel->load($ortKurzbz);
+		if (isError($room))
+			show_error(getError($room), 500);
+		if (!hasData($room))
+			show_error('Ungueltiger Parameter: ort_kurzbz', 400);
+
+		return $ortKurzbz;
+	}
+
+	/**
+	 * @return array Requested Lehrverband filters.
+	 */
+	private function getVerbandFilters()
+	{
+		$stgKz = $this->getInteger('stg_kz', true);
+		$semester = $this->getInteger('sem', false, true);
+		$verband = $this->getOptionalFilter('ver');
+		$gruppe = $this->getOptionalFilter('grp');
+
+		$this->StudiengangModel->addSelect('studiengang_kz');
+		$studiengang = $this->StudiengangModel->load($stgKz);
+		if (isError($studiengang))
+			show_error(getError($studiengang), 500);
+		if (!hasData($studiengang))
+			show_error('Ungueltiger Parameter: stg_kz', 400);
+
+		return array(
+			'stg_kz' => $stgKz,
+			'sem' => $semester,
+			'ver' => $verband,
+			'grp' => $gruppe
+		);
+	}
+
+	private function getInteger($name, $signed, $optional = false)
+	{
+		$value = $this->input->get($name, true);
+		if ($optional && ($value === null || $value === ''))
+			return null;
+
+		$pattern = $signed ? '/^-?\d+$/' : '/^\d+$/';
+		if (!is_string($value) || !preg_match($pattern, $value))
+			show_error('Ungueltiger Parameter: '.$name, 400);
+
+		$integer = filter_var($value, FILTER_VALIDATE_INT);
+		if ($integer === false || (!$signed && $integer < 0))
+			show_error('Ungueltiger Parameter: '.$name, 400);
+
+		return $integer;
+	}
+
+	private function getOptionalFilter($name)
+	{
+		$value = $this->input->get($name, true);
+		if ($value === null || $value === '' || $value === '0')
+			return null;
+		if (!is_string($value)
+			|| !check_utf8($value)
+			|| mb_strlen($value) > 20
+			|| !preg_match('/^[[:alnum:]_-]+$/u', $value))
+		{
+			show_error('Ungueltiger Parameter: '.$name, 400);
+		}
+
+		return $value;
+	}
+
+	/**
+	 * Validates and expands the requested range to complete weeks.
+	 *
+	 * @return array{0: int, 1: int} Begin and end timestamps.
+	 */
+	private function getDateRange()
+	{
+		$begin = $this->getTimestamp('begin');
+		$ende = $this->getTimestamp('ende');
+
+		if ($ende < $begin)
+			show_error('Ungueltiger Datumsbereich', 400);
+
+		if ($ende - $begin > self::MAX_DATE_RANGE)
+			show_error('Datumsbereich zu gross', 400);
+
+		$begin = strtotime('monday this week', $begin);
+		$ende = strtotime('sunday this week', $ende);
+
+		return array($begin, $ende);
+	}
+
+	/**
+	 * Builds the Excel download filename.
+	 *
+	 * @param int $begin Range start timestamp.
+	 * @param int $ende Range end timestamp.
+	 * @return string Filename.
+	 */
+	private function getFilename($begin, $ende)
+	{
+		$studiensemester = $this->getStudiensemester($begin, $ende);
+
+		$filename = $this->p->t('global', 'termine');
+		if ($studiensemester !== null)
+			$filename .= '_'.$studiensemester->studiensemester_kurzbz;
+		$filename .= '-'.date('Ymd').'.xls';
+
+		return $filename;
+	}
+
+	/**
+	 * Gets the study semester covered by the requested date range.
+	 *
+	 * @param int $begin Range start timestamp.
+	 * @param int $ende Range end timestamp.
+	 * @return object|null Study semester, if one overlaps the range.
+	 */
+	private function getStudiensemester($begin, $ende)
+	{
+		$semesterRange = $this->StudiensemesterModel->getByDateRange(
+			date('Y-m-d', $begin),
+			date('Y-m-d', $ende)
+		);
+
+		if (isError($semesterRange) || !hasData($semesterRange))
+			return null;
+
+		$studiensemester = current(getData($semesterRange));
+
+		return $studiensemester;
+	}
+
+	/**
+	 * @param string $name GET parameter name.
+	 * @return int Unix timestamp.
+	 */
+	private function getTimestamp($name)
+	{
+		$value = $this->input->get($name, true);
+
+		if (!is_string($value) || !ctype_digit($value))
+			show_error('Ungueltiger Parameter: '.$name, 400);
+
+		$timestamp = filter_var(
+			$value,
+			FILTER_VALIDATE_INT,
+			array('options' => array('min_range' => 0))
+		);
+
+		if ($timestamp === false)
+			show_error('Ungueltiger Parameter: '.$name, 400);
+
+		return $timestamp;
+	}
+
+	/**
+	 * Ensures access to another user's timetable is explicitly permitted.
+	 *
+	 * @param string $uid Requested user UID.
+	 * @return void
+	 */
+	private function authorizeUid($uid)
+	{
+		if ($uid !== getAuthUID()
+			&& !$this->permissionlib->isBerechtigt('basis/other_lv_plan'))
+		{
+			show_error('Forbidden', 403);
+		}
+	}
+
+	/**
+	 * Ensures the requested user exists.
+	 *
+	 * @param string $uid Requested user UID.
+	 * @return void
+	 */
+	private function validateUid($uid)
+	{
+		$this->BenutzerModel->addSelect('uid');
+		$user = $this->BenutzerModel->load(array($uid));
+
+		if (isError($user))
+			show_error(getError($user), 500);
+
+		if (!hasData($user))
+			show_error('Ungueltiger Parameter: pers_uid', 400);
+	}
+}

application/controllers/LvPlanHTMLDetail.php

@@ -0,0 +1,333 @@
+<?php
+
+if (!defined('BASEPATH'))
+	exit('No direct script access allowed');
+
+require_once(FHCPATH.'include/functions.inc.php');
+
+class LvPlanHTMLDetail extends Auth_Controller
+{
+	const TIMEZONE = 'Europe/Vienna';
+
+	/**
+	 * Object initialization.
+	 */
+	public function __construct()
+	{
+		parent::__construct(array(
+			'index' => array('basis/cis:r')
+		));
+
+		$this->load->model('person/Benutzer_model', 'BenutzerModel');
+		$this->load->model('organisation/Studiengang_model', 'StudiengangModel');
+		$this->load->model('ressource/Ort_model', 'OrtModel');
+		$this->load->model('ressource/Stunde_model', 'StundeModel');
+		$this->loadPhrases(array(
+			'global' => array('termine'),
+			'ui' => array('organisierende', 'teilnehmende')
+		));
+	}
+
+	/**
+	 * Serves details for one hour in the HTML timetable preview.
+	 *
+	 * @return void
+	 */
+	public function index()
+	{
+		$type = $this->getType();
+		$datum = $this->getDate();
+		$hour = $this->getHour();
+
+		if ($type === 'verband')
+			$filters = $this->getVerbandFilters();
+		elseif ($type === 'ort')
+			$filters = $this->getRoomFilters();
+		else
+			$filters = $this->getPersonalFilters();
+
+		$this->load->library('LvPlanHTMLDetailLib');
+		$content = $this->lvplanhtmldetaillib->getContent(
+			$datum,
+			$hour,
+			$type,
+			$filters
+		);
+
+		$this->output
+			->set_content_type('text/html', 'UTF-8')
+			->set_header('X-Content-Type-Options: nosniff')
+			->set_output($content);
+	}
+
+	/**
+	 * @return string Requested timetable type.
+	 */
+	private function getType()
+	{
+		$type = $this->input->get('type', true);
+
+		if (!in_array($type, array('student', 'lektor', 'verband', 'ort'), true))
+			show_error('Ungueltiger Parameter: type', 400);
+
+		return $type;
+	}
+
+	/**
+	 * @return string Date in YYYY-MM-DD format.
+	 */
+	private function getDate()
+	{
+		$value = $this->input->get('datum', true);
+		if (!is_string($value) || !preg_match('/^\d{4}-\d{2}-\d{2}$/', $value))
+			show_error('Ungueltiger Parameter: datum', 400);
+
+		$date = DateTime::createFromFormat(
+			'!Y-m-d',
+			$value,
+			new DateTimeZone(self::TIMEZONE)
+		);
+		$errors = DateTime::getLastErrors();
+		if ($date === false
+			|| ($errors !== false
+				&& ($errors['warning_count'] > 0 || $errors['error_count'] > 0))
+			|| $date->format('Y-m-d') !== $value)
+		{
+			show_error('Ungueltiger Parameter: datum', 400);
+		}
+
+		return $value;
+	}
+
+	/**
+	 * @return array Selected timetable hour.
+	 */
+	private function getHour()
+	{
+		$number = $this->getInteger('stunde', false);
+		$this->StundeModel->addSelect('stunde, beginn, ende');
+		$result = $this->StundeModel->load($number);
+
+		if (isError($result))
+			show_error(getError($result), 500);
+		if (!hasData($result))
+			show_error('Ungueltiger Parameter: stunde', 400);
+
+		$hours = getData($result);
+		$hour = reset($hours);
+		$begin = isset($hour->beginn) ? (string)$hour->beginn : '';
+		$end = isset($hour->ende) ? (string)$hour->ende : '';
+		$beginSeconds = $this->timeToSeconds($begin);
+		$endSeconds = $this->timeToSeconds($end);
+
+		if ($beginSeconds === null || $endSeconds === null || $endSeconds <= $beginSeconds)
+			show_error('Ungueltiges Stundenraster', 500);
+
+		return array(
+			'number' => (string)$hour->stunde,
+			'begin' => $begin,
+			'end' => $end
+		);
+	}
+
+	/**
+	 * @return array Personal timetable filters.
+	 */
+	private function getPersonalFilters()
+	{
+		$uid = $this->input->get('pers_uid', true);
+		if (!is_string($uid) || $uid === '' || !check_utf8($uid))
+			show_error('Ungueltiger Parameter: pers_uid', 400);
+
+		if ($uid !== getAuthUID()
+			&& !$this->permissionlib->isBerechtigt('basis/other_lv_plan'))
+		{
+			show_error('Forbidden', 403);
+		}
+
+		$this->BenutzerModel->addSelect(
+			'tbl_benutzer.uid, tbl_person.titelpre, tbl_person.vorname, '
+			.'tbl_person.nachname, tbl_person.titelpost'
+		);
+		$this->BenutzerModel->addJoin('public.tbl_person', 'person_id', 'LEFT');
+		$result = $this->BenutzerModel->load(array($uid));
+
+		if (isError($result))
+			show_error(getError($result), 500);
+		if (!hasData($result))
+			show_error('Ungueltiger Parameter: pers_uid', 400);
+
+		$users = getData($result);
+		$user = reset($users);
+		$nameParts = array();
+		foreach (array('titelpre', 'vorname', 'nachname', 'titelpost') as $property)
+		{
+			if (isset($user->{$property}) && trim($user->{$property}) !== '')
+				$nameParts[] = trim($user->{$property});
+		}
+
+		return array(
+			'uid' => $uid,
+			'full_name' => implode(' ', $nameParts)
+		);
+	}
+
+	/**
+	 * @return array Room timetable filters.
+	 */
+	private function getRoomFilters()
+	{
+		$ortKurzbz = $this->input->get('ort_kurzbz', true);
+		if (!is_string($ortKurzbz) || $ortKurzbz === '' || !check_utf8($ortKurzbz))
+			show_error('Ungueltiger Parameter: ort_kurzbz', 400);
+
+		$this->OrtModel->addSelect('ort_kurzbz, bezeichnung, content_id');
+		$result = $this->OrtModel->load($ortKurzbz);
+
+		if (isError($result))
+			show_error(getError($result), 500);
+		if (!hasData($result))
+			show_error('Ungueltiger Parameter: ort_kurzbz', 400);
+
+		$rooms = getData($result);
+		$room = reset($rooms);
+
+		return array(
+			'ort_kurzbz' => $ortKurzbz,
+			'bezeichnung' => isset($room->bezeichnung) ? $room->bezeichnung : '',
+			'content_id' => isset($room->content_id) ? $room->content_id : null
+		);
+	}
+
+	/**
+	 * @return array Lehrverband timetable filters.
+	 */
+	private function getVerbandFilters()
+	{
+		$stgKz = $this->getInteger('stg_kz', true);
+		$semester = $this->getInteger('sem', false, true);
+		$verband = $this->getOptionalFilter('ver');
+		$gruppe = $this->getOptionalFilter('grp');
+		$ortKurzbz = $this->getOptionalRoomFilter();
+
+		$this->StudiengangModel->addSelect(
+			'studiengang_kz, UPPER(typ || kurzbz) AS stg_kurzbz'
+		);
+		$result = $this->StudiengangModel->load($stgKz);
+
+		if (isError($result))
+			show_error(getError($result), 500);
+		if (!hasData($result))
+			show_error('Ungueltiger Parameter: stg_kz', 400);
+
+		$programs = getData($result);
+		$program = reset($programs);
+
+		return array(
+			'stg_kz' => $stgKz,
+			'stg_kurzbz' => isset($program->stg_kurzbz)
+				? $program->stg_kurzbz
+				: '',
+			'sem' => $semester,
+			'ver' => $verband,
+			'grp' => $gruppe,
+			'ort_kurzbz' => $ortKurzbz
+		);
+	}
+
+	/**
+	 * Returns the room selected in a Verband preview cell, if present.
+	 *
+	 * @return string|null
+	 */
+	private function getOptionalRoomFilter()
+	{
+		$ortKurzbz = $this->input->get('ort_kurzbz', true);
+		if ($ortKurzbz === null || $ortKurzbz === '')
+			return null;
+		if (!is_string($ortKurzbz) || !check_utf8($ortKurzbz))
+			show_error('Ungueltiger Parameter: ort_kurzbz', 400);
+
+		$this->OrtModel->addSelect('ort_kurzbz');
+		$result = $this->OrtModel->load($ortKurzbz);
+
+		if (isError($result))
+			show_error(getError($result), 500);
+		if (!hasData($result))
+			show_error('Ungueltiger Parameter: ort_kurzbz', 400);
+
+		return $ortKurzbz;
+	}
+
+	/**
+	 * @param string $name GET parameter name.
+	 * @param bool $signed Whether negative values are allowed.
+	 * @param bool $optional Whether the parameter may be omitted or empty.
+	 * @return int|null
+	 */
+	private function getInteger($name, $signed, $optional = false)
+	{
+		$value = $this->input->get($name, true);
+		if ($optional && ($value === null || $value === ''))
+			return null;
+
+		$pattern = $signed ? '/^-?\d+$/' : '/^\d+$/';
+		if (!is_string($value) || !preg_match($pattern, $value))
+			show_error('Ungueltiger Parameter: '.$name, 400);
+
+		$isNegative = $signed && substr($value, 0, 1) === '-';
+		$digits = $isNegative ? substr($value, 1) : $value;
+		$digits = ltrim($digits, '0');
+		if ($digits === '')
+			$digits = '0';
+		$normalizedValue = $isNegative && $digits !== '0' ? '-'.$digits : $digits;
+
+		$integer = filter_var($normalizedValue, FILTER_VALIDATE_INT);
+		if ($integer === false || (!$signed && $integer < 0))
+			show_error('Ungueltiger Parameter: '.$name, 400);
+
+		return $integer;
+	}
+
+	/**
+	 * Returns null for the legacy wildcard values "" and "0".
+	 *
+	 * @param string $name GET parameter name.
+	 * @return string|null
+	 */
+	private function getOptionalFilter($name)
+	{
+		$value = $this->input->get($name, true);
+		if ($value === null || $value === '' || $value === '0')
+			return null;
+
+		if (!is_string($value)
+			|| !check_utf8($value)
+			|| mb_strlen($value) > 20
+			|| !preg_match('/^[[:alnum:]_-]+$/u', $value))
+		{
+			show_error('Ungueltiger Parameter: '.$name, 400);
+		}
+
+		return $value;
+	}
+
+	/**
+	 * @param string $time PostgreSQL time value.
+	 * @return int|null
+	 */
+	private function timeToSeconds($time)
+	{
+		if (!preg_match('/^(\d{1,2}):(\d{2})(?::(\d{2})(?:\.\d+)?)?$/', $time, $matches))
+			return null;
+
+		$hours = (int)$matches[1];
+		$minutes = (int)$matches[2];
+		$seconds = isset($matches[3]) ? (int)$matches[3] : 0;
+
+		if ($hours > 23 || $minutes > 59 || $seconds > 59)
+			return null;
+
+		return $hours * 3600 + $minutes * 60 + $seconds;
+	}
+}

application/controllers/LvPlanHTMLPreview.php

@@ -0,0 +1,356 @@
+<?php
+
+if (!defined('BASEPATH'))
+	exit('No direct script access allowed');
+
+require_once(FHCPATH.'include/functions.inc.php');
+
+class LvPlanHTMLPreview extends Auth_Controller
+{
+	const MAX_DATE_RANGE = 34560000; // 400 days
+	const DEFAULT_RESERVATION_MIN_DAYS = 1;
+	const DEFAULT_RESERVATION_END_DATE = '2099-01-01';
+
+	/**
+	 * Object initialization.
+	 */
+	public function __construct()
+	{
+		parent::__construct([
+			'index' => ['basis/cis:r']
+		]);
+
+		$this->load->model('person/Benutzer_model', 'BenutzerModel');
+		$this->load->model('crm/Student_model', 'StudentModel');
+		$this->load->model('organisation/Studiengang_model', 'StudiengangModel');
+		$this->load->model('ressource/Ort_model', 'OrtModel');
+		$this->loadPhrases(
+			array(
+				'lvplan' => array(
+					'room_not_reservable',
+					'room_reservation_restricted_to_period'
+				)
+			)
+		);
+	}
+
+	/**
+	 * Serves an authenticated, printable timetable preview.
+	 *
+	 * @return void
+	 */
+	public function index()
+	{
+		$type = $this->getType();
+		list($begin, $ende) = $this->getDateRange();
+		if ($type === 'verband')
+			$filters = $this->getVerbandFilters();
+		elseif ($type === 'ort')
+			$filters = $this->getRoomFilters();
+		else
+			$filters = $this->getPersonalFilters($type);
+
+		$this->load->library('LvPlanHTMLLib');
+		$content = $this->lvplanhtmllib->getContent(
+			$begin,
+			$ende,
+			$type,
+			$filters
+		);
+
+		$this->output
+			->set_content_type('text/html', 'UTF-8')
+			->set_header('X-Content-Type-Options: nosniff')
+			->set_output($content);
+	}
+
+	/**
+	 * @return string Requested timetable type.
+	 */
+	private function getType()
+	{
+		$type = $this->input->get('type', true);
+
+		if (!in_array($type, array('student', 'lektor', 'verband', 'ort'), true))
+			show_error('Ungueltiger Parameter: type', 400);
+
+		return $type;
+	}
+
+	/**
+	 * @return array Personal preview filters.
+	 */
+	private function getPersonalFilters($type)
+	{
+		// Legacy wochenplan calendar links include empty Lehrverband parameters
+		// for personal plans. They are irrelevant when type is student or lektor.
+		if ($this->hasVerbandParameters())
+			show_error('Ungueltige Parameterkombination', 400);
+
+		$uid = $this->input->get('pers_uid', true);
+		if (!is_string($uid) || $uid === '' || !check_utf8($uid))
+			show_error('Ungueltiger Parameter: pers_uid', 400);
+
+		if ($uid !== getAuthUID()
+			&& !$this->permissionlib->isBerechtigt('basis/other_lv_plan'))
+		{
+			show_error('Forbidden', 403);
+		}
+
+		$this->BenutzerModel->addSelect(
+			'tbl_benutzer.uid, tbl_person.titelpre, tbl_person.vorname, '
+			.'tbl_person.nachname, tbl_person.titelpost'
+		);
+		$this->BenutzerModel->addJoin('public.tbl_person', 'person_id', 'LEFT');
+		$user = $this->BenutzerModel->load(array($uid));
+
+		if (isError($user))
+			show_error(getError($user), 500);
+		if (!hasData($user))
+			show_error('Ungueltiger Parameter: pers_uid', 400);
+		$users = getData($user);
+		$userData = reset($users);
+		$nameParts = array();
+		foreach (array('titelpre', 'vorname', 'nachname', 'titelpost') as $property)
+		{
+			if (isset($userData->{$property}) && trim($userData->{$property}) !== '')
+				$nameParts[] = trim($userData->{$property});
+		}
+
+		$filters = array(
+			'uid' => $uid,
+			'full_name' => implode(' ', $nameParts)
+		);
+
+		if ($type === 'student')
+		{
+			$this->StudentModel->addSelect(
+				'studiengang_kz, semester, verband, gruppe'
+			);
+			$student = $this->StudentModel->load(array($uid));
+
+			if (isError($student))
+				show_error(getError($student), 500);
+			if (!hasData($student))
+				show_error('Ungueltiger Parameter: pers_uid', 400);
+
+			$students = getData($student);
+			$studentData = reset($students);
+			$filters['stg_kz'] = $studentData->studiengang_kz;
+			$filters['sem'] = $studentData->semester;
+			$filters['ver'] = $studentData->verband;
+			$filters['grp'] = $studentData->gruppe;
+		}
+
+		return $filters;
+	}
+
+	/**
+	 * Legacy room links also carry pers_uid, but the UID does not filter or
+	 * authorize a room plan. Only ort_kurzbz identifies the requested plan.
+	 *
+	 * @return array Room preview filters.
+	 */
+	private function getRoomFilters()
+	{
+		$ortKurzbz = $this->input->get('ort_kurzbz', true);
+		if (!is_string($ortKurzbz) || $ortKurzbz === '' || !check_utf8($ortKurzbz))
+			show_error('Ungueltiger Parameter: ort_kurzbz', 400);
+
+		$this->OrtModel->addSelect('ort_kurzbz, bezeichnung, reservieren');
+		$room = $this->OrtModel->load($ortKurzbz);
+
+		if (isError($room))
+			show_error(getError($room), 500);
+		if (!hasData($room))
+			show_error('Ungueltiger Parameter: ort_kurzbz', 400);
+
+		$rooms = getData($room);
+		$roomData = reset($rooms);
+		$reservationMinDays = defined('RES_TAGE_LEKTOR_MIN')
+			? (int)constant('RES_TAGE_LEKTOR_MIN')
+			: self::DEFAULT_RESERVATION_MIN_DAYS;
+		$reservationEndDate = defined('RES_TAGE_LEKTOR_BIS')
+			? constant('RES_TAGE_LEKTOR_BIS')
+			: self::DEFAULT_RESERVATION_END_DATE;
+		$reservationStart = jump_day(
+			time(),
+			$reservationMinDays - 1
+		);
+		$reservationEnd = strtotime($reservationEndDate);
+
+		return array(
+			'ort_kurzbz' => $ortKurzbz,
+			'bezeichnung' => isset($roomData->bezeichnung) ? $roomData->bezeichnung : '',
+			'room_reservable' => isset($roomData->reservieren)
+				&& $roomData->reservieren === true,
+			'room_reservation_permitted' => $this->permissionlib->isBerechtigt(
+				'lehre/reservierung:begrenzt',
+				'sui'
+			),
+			'room_reservation_start' => $reservationStart,
+			'room_reservation_end' => $reservationEnd,
+			'room_not_reservable_message' => $this->p->t(
+				'lvplan',
+				'room_not_reservable'
+			),
+			'room_reservation_restricted_message' => $this->p->t(
+				'lvplan',
+				'room_reservation_restricted_to_period',
+				array(
+					'start_date' => date('d.m.Y', $reservationStart),
+					'end_date' => date('d.m.Y', $reservationEnd)
+				)
+			)
+		);
+	}
+
+	/**
+	 * @return array Lehrverband preview filters.
+	 */
+	private function getVerbandFilters()
+	{
+		// Legacy wochenplan links always carry pers_uid. It does not filter or
+		// authorize a Lehrverband plan and is intentionally ignored here.
+		$stgKz = $this->getInteger('stg_kz', true);
+		$semester = $this->getInteger('sem', false, true);
+		$verband = $this->getOptionalFilter('ver');
+		$gruppe = $this->getOptionalFilter('grp');
+
+		$this->StudiengangModel->addSelect(
+			'studiengang_kz, UPPER(typ || kurzbz) AS stg_kurzbz'
+		);
+		$studiengang = $this->StudiengangModel->load($stgKz);
+
+		if (isError($studiengang))
+			show_error(getError($studiengang), 500);
+		if (!hasData($studiengang))
+			show_error('Ungueltiger Parameter: stg_kz', 400);
+		$studiengaenge = getData($studiengang);
+		$studiengangData = reset($studiengaenge);
+
+		return array(
+			'stg_kz' => $stgKz,
+			'stg_kurzbz' => isset($studiengangData->stg_kurzbz)
+				? $studiengangData->stg_kurzbz
+				: '',
+			'sem' => $semester,
+			'ver' => $verband,
+			'grp' => $gruppe
+		);
+	}
+
+	/**
+	 * @return bool Whether any non-empty Lehrverband-only parameters were supplied.
+	 */
+	private function hasVerbandParameters()
+	{
+		foreach (array('stg_kz', 'sem', 'ver', 'grp') as $name)
+		{
+			$value = $this->input->get($name, true);
+			if ($value !== null && $value !== '')
+				return true;
+		}
+
+		return false;
+	}
+
+	/**
+	 * @param string $name GET parameter name.
+	 * @param bool $signed Whether negative values are allowed.
+	 * @param bool $optional Whether the parameter may be omitted or empty.
+	 * @return int|null
+	 */
+	private function getInteger($name, $signed, $optional = false)
+	{
+		$value = $this->input->get($name, true);
+		if ($optional && ($value === null || $value === ''))
+			return null;
+
+		$pattern = $signed ? '/^-?\d+$/' : '/^\d+$/';
+
+		if (!is_string($value) || !preg_match($pattern, $value))
+			show_error('Ungueltiger Parameter: '.$name, 400);
+
+		$isNegative = $signed && substr($value, 0, 1) === '-';
+		$digits = $isNegative ? substr($value, 1) : $value;
+		$digits = ltrim($digits, '0');
+		if ($digits === '')
+			$digits = '0';
+		$normalizedValue = $isNegative && $digits !== '0' ? '-'.$digits : $digits;
+
+		$integer = filter_var($normalizedValue, FILTER_VALIDATE_INT);
+		if ($integer === false || (!$signed && $integer < 0))
+			show_error('Ungueltiger Parameter: '.$name, 400);
+
+		return $integer;
+	}
+
+	/**
+	 * Returns null for the legacy wildcard values "" and "0".
+	 *
+	 * @param string $name GET parameter name.
+	 * @return string|null
+	 */
+	private function getOptionalFilter($name)
+	{
+		$value = $this->input->get($name, true);
+
+		if ($value === null || $value === '' || $value === '0')
+			return null;
+
+		if (!is_string($value)
+			|| !check_utf8($value)
+			|| mb_strlen($value) > 20
+			|| !preg_match('/^[[:alnum:]_-]+$/u', $value))
+		{
+			show_error('Ungueltiger Parameter: '.$name, 400);
+		}
+
+		return $value;
+	}
+
+	/**
+	 * Validates and expands the requested range to complete weeks.
+	 *
+	 * @return array{0: int, 1: int} Begin and end timestamps.
+	 */
+	private function getDateRange()
+	{
+		$begin = $this->getTimestamp('begin');
+		$ende = $this->getTimestamp('ende');
+
+		if ($ende < $begin)
+			show_error('Ungueltiger Datumsbereich', 400);
+		if ($ende - $begin > self::MAX_DATE_RANGE)
+			show_error('Datumsbereich zu gross', 400);
+
+		$begin = strtotime('monday this week', $begin);
+		$ende = strtotime('sunday this week', $ende);
+
+		return array($begin, $ende);
+	}
+
+	/**
+	 * @param string $name GET parameter name.
+	 * @return int Unix timestamp.
+	 */
+	private function getTimestamp($name)
+	{
+		$value = $this->input->get($name, true);
+
+		if (!is_string($value) || !ctype_digit($value))
+			show_error('Ungueltiger Parameter: '.$name, 400);
+
+		$timestamp = filter_var(
+			$value,
+			FILTER_VALIDATE_INT,
+			array('options' => array('min_range' => 0))
+		);
+
+		if ($timestamp === false)
+			show_error('Ungueltiger Parameter: '.$name, 400);
+
+		return $timestamp;
+	}
+}

application/controllers/LvPlanICALDownload.php

@@ -0,0 +1,308 @@
+<?php
+
+if (!defined('BASEPATH'))
+	exit('No direct script access allowed');
+
+require_once(FHCPATH.'include/functions.inc.php');
+
+class LvPlanICALDownload extends Auth_Controller
+{
+	const MAX_DATE_RANGE = 34560000; // 400 days
+
+	/**
+	 * Object initialization.
+	 */
+	public function __construct()
+	{
+		parent::__construct([
+			'index' => ['basis/cis:r']
+		]);
+
+		$this->load->model('person/Benutzer_model', 'BenutzerModel');
+		$this->load->model('ressource/Ort_model', 'OrtModel');
+		$this->load->model('organisation/Studiengang_model', 'StudiengangModel');
+		$this->load->model('organisation/Studiensemester_model', 'StudiensemesterModel');
+		$this->loadPhrases(array('global', 'lehre', 'ui'));
+	}
+
+	/**
+	 * Serves an authenticated iCalendar file download.
+	 *
+	 * @return void
+	 */
+	public function index()
+	{
+		$type = $this->getType();
+		$uid = getAuthUID();
+		$ortKurzbz = null;
+		$verbandFilters = null;
+		if ($type === 'ort')
+			$ortKurzbz = $this->getRoom();
+		elseif ($type === 'verband')
+			$verbandFilters = $this->getVerbandFilters();
+		else
+		{
+			$uid = $this->getUid();
+			$this->authorizeUid($uid);
+			$this->validateUid($uid);
+		}
+		$version = $this->getVersion();
+		list($begin, $ende) = $this->getDateRange();
+
+		$this->load->library('LvPlanICALLib');
+		$content = $this->lvplanicallib->getContent(
+			$uid,
+			$begin,
+			$ende,
+			$type,
+			$version,
+			$ortKurzbz,
+			$verbandFilters
+		);
+
+		$filename = $this->getFilename($begin, $ende, $version);
+
+		$this->output
+			->set_content_type('text/calendar', 'UTF-8')
+			->set_header('Content-Disposition: attachment; filename="'.$filename.'"')
+			->set_header('Pragma: public')
+			->set_header('Expires: 0')
+			->set_output($content);
+	}
+
+	/**
+	 * @return string Requested timetable type.
+	 */
+	private function getType()
+	{
+		$type = $this->input->get('type', true);
+
+		if (!in_array($type, array('student', 'lektor', 'ort', 'verband'), true))
+			show_error('Ungueltiger Parameter: type', 400);
+
+		return $type;
+	}
+
+	/**
+	 * @return string Requested user UID.
+	 */
+	private function getUid()
+	{
+		$uid = $this->input->get('pers_uid', true);
+
+		if (!is_string($uid) || $uid === '' || !check_utf8($uid))
+			show_error('Ungueltiger Parameter: pers_uid', 400);
+
+		return $uid;
+	}
+
+	/**
+	 * @return string Requested room identifier.
+	 */
+	private function getRoom()
+	{
+		$ortKurzbz = $this->input->get('ort_kurzbz', true);
+		if (!is_string($ortKurzbz) || $ortKurzbz === '' || !check_utf8($ortKurzbz))
+			show_error('Ungueltiger Parameter: ort_kurzbz', 400);
+
+		$this->OrtModel->addSelect('ort_kurzbz');
+		$room = $this->OrtModel->load($ortKurzbz);
+		if (isError($room))
+			show_error(getError($room), 500);
+		if (!hasData($room))
+			show_error('Ungueltiger Parameter: ort_kurzbz', 400);
+
+		return $ortKurzbz;
+	}
+
+	/**
+	 * @return array Requested Lehrverband filters.
+	 */
+	private function getVerbandFilters()
+	{
+		$stgKz = $this->getInteger('stg_kz', true);
+		$semester = $this->getInteger('sem', false, true);
+		$verband = $this->getOptionalFilter('ver');
+		$gruppe = $this->getOptionalFilter('grp');
+
+		$this->StudiengangModel->addSelect('studiengang_kz');
+		$studiengang = $this->StudiengangModel->load($stgKz);
+		if (isError($studiengang))
+			show_error(getError($studiengang), 500);
+		if (!hasData($studiengang))
+			show_error('Ungueltiger Parameter: stg_kz', 400);
+
+		return array(
+			'stg_kz' => $stgKz,
+			'sem' => $semester,
+			'ver' => $verband,
+			'grp' => $gruppe
+		);
+	}
+
+	private function getInteger($name, $signed, $optional = false)
+	{
+		$value = $this->input->get($name, true);
+		if ($optional && ($value === null || $value === ''))
+			return null;
+
+		$pattern = $signed ? '/^-?\d+$/' : '/^\d+$/';
+		if (!is_string($value) || !preg_match($pattern, $value))
+			show_error('Ungueltiger Parameter: '.$name, 400);
+
+		$integer = filter_var($value, FILTER_VALIDATE_INT);
+		if ($integer === false || (!$signed && $integer < 0))
+			show_error('Ungueltiger Parameter: '.$name, 400);
+
+		return $integer;
+	}
+
+	private function getOptionalFilter($name)
+	{
+		$value = $this->input->get($name, true);
+		if ($value === null || $value === '' || $value === '0')
+			return null;
+		if (!is_string($value)
+			|| !check_utf8($value)
+			|| mb_strlen($value) > 20
+			|| !preg_match('/^[[:alnum:]_-]+$/u', $value))
+		{
+			show_error('Ungueltiger Parameter: '.$name, 400);
+		}
+
+		return $value;
+	}
+
+	/**
+	 * @return int Requested iCalendar major version.
+	 */
+	private function getVersion()
+	{
+		$version = $this->input->get('version', true);
+
+		if (!in_array($version, array('1', '2'), true))
+			show_error('Ungueltiger Parameter: version', 400);
+
+		return (int)$version;
+	}
+
+	/**
+	 * Validates and expands the requested range to complete weeks.
+	 *
+	 * @return array{0: int, 1: int} Begin and end timestamps.
+	 */
+	private function getDateRange()
+	{
+		$begin = $this->getTimestamp('begin');
+		$ende = $this->getTimestamp('ende');
+
+		if ($ende < $begin)
+			show_error('Ungueltiger Datumsbereich', 400);
+
+		if ($ende - $begin > self::MAX_DATE_RANGE)
+			show_error('Datumsbereich zu gross', 400);
+
+		$begin = strtotime('monday this week', $begin);
+		$ende = strtotime('sunday this week', $ende);
+
+		return array($begin, $ende);
+	}
+
+	/**
+	 * Builds the iCalendar download filename.
+	 *
+	 * @param int $begin Range start timestamp.
+	 * @param int $ende Range end timestamp.
+	 * @param int $version iCalendar major version.
+	 * @return string Filename.
+	 */
+	private function getFilename($begin, $ende, $version)
+	{
+		$studiensemester = $this->getStudiensemester($begin, $ende);
+
+		$filename = $this->p->t('global', 'termine');
+		if ($studiensemester !== null)
+			$filename .= '_'.$studiensemester->studiensemester_kurzbz;
+		$filename .= '-'.date('Ymd').'_ical'.$version.'.ics';
+
+		return $filename;
+	}
+
+	/**
+	 * Gets the study semester covered by the requested date range.
+	 *
+	 * @param int $begin Range start timestamp.
+	 * @param int $ende Range end timestamp.
+	 * @return object|null Study semester, if one overlaps the range.
+	 */
+	private function getStudiensemester($begin, $ende)
+	{
+		$semesterRange = $this->StudiensemesterModel->getByDateRange(
+			date('Y-m-d', $begin),
+			date('Y-m-d', $ende)
+		);
+
+		if (isError($semesterRange) || !hasData($semesterRange))
+			return null;
+
+		$studiensemester = current(getData($semesterRange));
+
+		return $studiensemester;
+	}
+
+	/**
+	 * @param string $name GET parameter name.
+	 * @return int Unix timestamp.
+	 */
+	private function getTimestamp($name)
+	{
+		$value = $this->input->get($name, true);
+
+		if (!is_string($value) || !ctype_digit($value))
+			show_error('Ungueltiger Parameter: '.$name, 400);
+
+		$timestamp = filter_var(
+			$value,
+			FILTER_VALIDATE_INT,
+			array('options' => array('min_range' => 0))
+		);
+
+		if ($timestamp === false)
+			show_error('Ungueltiger Parameter: '.$name, 400);
+
+		return $timestamp;
+	}
+
+	/**
+	 * Ensures access to another user's timetable is explicitly permitted.
+	 *
+	 * @param string $uid Requested user UID.
+	 * @return void
+	 */
+	private function authorizeUid($uid)
+	{
+		if ($uid !== getAuthUID()
+			&& !$this->permissionlib->isBerechtigt('basis/other_lv_plan'))
+		{
+			show_error('Forbidden', 403);
+		}
+	}
+
+	/**
+	 * Ensures the requested user exists.
+	 *
+	 * @param string $uid Requested user UID.
+	 * @return void
+	 */
+	private function validateUid($uid)
+	{
+		$this->BenutzerModel->addSelect('uid');
+		$user = $this->BenutzerModel->load(array($uid));
+
+		if (isError($user))
+			show_error(getError($user), 500);
+
+		if (!hasData($user))
+			show_error('Ungueltiger Parameter: pers_uid', 400);
+	}
+}

application/controllers/LvPlanICALSubscription.php

@@ -0,0 +1,167 @@
+<?php
+
+if (!defined('BASEPATH'))
+	exit('No direct script access allowed');
+
+require_once(FHCPATH.'include/functions.inc.php');
+
+class LvPlanICALSubscription extends FHC_Controller
+{
+	/**
+	 * Encrypted calendar subscription token.
+	 *
+	 * @var string|null
+	 */
+	private $cal;
+
+	/**
+	 * UID authenticated by the calendar subscription token.
+	 *
+	 * @var string
+	 */
+	private $uid;
+
+	/**
+	 * First date included in the subscription feed.
+	 *
+	 * @var int Unix timestamp at local midnight
+	 */
+	private $begin;
+
+	/**
+	 * Last date included in the subscription feed.
+	 *
+	 * @var int Unix timestamp at local midnight
+	 */
+	private $ende;
+
+	/**
+	 * Object initialization.
+	 */
+	public function __construct()
+	{
+		parent::__construct();
+
+		$this->load->model('person/Benutzer_model', 'BenutzerModel');
+		$this->load->model('organisation/Studiensemester_model', 'StudiensemesterModel');
+
+		$this->cal = $this->input->get('cal', true);
+		$this->uid = $this->authenticateSubscription($this->cal);
+
+		list($this->begin, $this->ende) = $this->determineDateRange();
+	}
+
+	/**
+	 * Serves the iCalendar subscription feed.
+	 *
+	 * @return void
+	 */
+	public function index()
+	{
+		$this->load->library('LvPlanICALLib');
+
+		$content = $this->lvplanicallib->getContent(
+			$this->uid,
+			$this->begin,
+			$this->ende,
+			null,
+			2,
+			null,
+			null,
+			'FH-Kalender'
+		);
+
+		$filename = 'FH-Kalender_'.date('m_Y', $this->begin).'_ical.ics';
+
+		$this->output
+			->set_content_type('text/calendar', 'UTF-8')
+			->set_header('Content-Disposition: inline; filename="'.$filename.'"')
+			->set_header('Pragma: public')
+			->set_header('Expires: 0')
+			->set_output($content);
+	}
+
+	/**
+	 * Authenticates an encrypted calendar subscription token.
+	 *
+	 * @param string|null $cal Encrypted UID from the subscription URL.
+	 * @return string Authenticated UID.
+	 */
+	private function authenticateSubscription($cal)
+	{
+		if (isEmptyString($cal))
+			show_error('Fehlerhafter Parameter', 400);
+
+		if (!defined('LVPLAN_CYPHER_KEY'))
+			show_error('LVPLAN_CYPHER_KEY is not configured', 500);
+
+		$uid = decryptData($cal, constant('LVPLAN_CYPHER_KEY'));
+
+		if (!is_string($uid) || $uid === '' || !check_utf8($uid))
+			show_error('Fehlerhafter Parameter', 400);
+
+		$this->BenutzerModel->addSelect('uid');
+		$user = $this->BenutzerModel->load([$uid]);
+
+		if (isError($user))
+			show_error(getError($user), 500);
+
+		if (!hasData($user))
+			show_error('Ungueltiger Benutzername', 401);
+
+		return $uid;
+	}
+
+	/**
+	 * Determines the subscription range from the current or next semester.
+	 *
+	 * During the final 30 days of the selected semester, the range is
+	 * extended through the following semester. The resulting range is
+	 * expanded to complete Monday-to-Sunday weeks.
+	 *
+	 * @return array{0: int, 1: int} Begin and end timestamps.
+	 */
+	private function determineDateRange()
+	{
+		$semesterResult = $this->StudiensemesterModel->getAkt();
+
+		if (isError($semesterResult))
+			show_error(getError($semesterResult), 500);
+
+		if (!hasData($semesterResult))
+		{
+			$semesterResult = $this->StudiensemesterModel->getNext();
+
+			if (isError($semesterResult))
+				show_error(getError($semesterResult), 500);
+		}
+
+		if (!hasData($semesterResult))
+			show_error('Studiensemester konnte nicht gefunden werden', 500);
+
+		$semester = current(getData($semesterResult));
+		$begin = strtotime($semester->start);
+		$ende = strtotime($semester->ende);
+
+		$semesterEnd = new DateTime($semester->ende);
+		$daysFromSemesterEnd = (int)$semesterEnd
+			->diff(new DateTime())
+			->format('%R%a');
+
+		if ($daysFromSemesterEnd >= -30)
+		{
+			$nextSemesterResult = $this->StudiensemesterModel
+				->getNextFrom($semester->studiensemester_kurzbz);
+
+			if (isError($nextSemesterResult))
+				show_error(getError($nextSemesterResult), 500);
+
+			if (hasData($nextSemesterResult))
+				$ende = strtotime(current(getData($nextSemesterResult))->ende);
+		}
+ 
+		$begin = strtotime('monday this week', $begin);
+		$ende = strtotime('sunday this week', $ende);
+		return [$begin, $ende];
+	}
+}

application/controllers/Tempus.php

@@ -0,0 +1,40 @@
+<?php
+
+if (! defined('BASEPATH')) exit('No direct script access allowed');
+
+/**
+ *
+ */
+class Tempus extends Auth_Controller
+{
+	public function __construct()
+	{
+		$permissions = [];
+		$router = load_class('Router');
+		$permissions[$router->method] = ['admin:r', 'assistenz:r'];
+		parent::__construct($permissions);
+
+		// Load Libraries
+		$this->load->library('VariableLib', ['uid' => getAuthUID()]);
+		
+		// Load Config
+		$this->load->config('calendar');
+	}
+
+	/**
+	 * @return void
+	 */
+	public function _remap()
+	{
+
+		$this->load->view('Tempus', [
+			'permissions' => [
+				'admin' => $this->permissionlib->isBerechtigt('admin')
+			],
+			'variables' => [
+				'semester_aktuell' => $this->variablelib->getVar('semester_aktuell'),
+				'timezone' => $this->config->item('timezone')
+			]
+		]);
+	}
+}

application/controllers/api/frontend/v1/RendererLoader.php

@@ -31,7 +31,7 @@ class RendererLoader extends FHCAPI_Controller
 
 		parent::__construct([
 			'GetRenderers' => self::PERM_LOGGED,
-           
+			'GetTempusRenderers' => self::PERM_LOGGED,
 		]);
 
         $this->load->library('LogLib');
@@ -66,6 +66,26 @@ class RendererLoader extends FHCAPI_Controller
 		$this->terminateWithSuccess($renderer_paths);
 	}
 
+	public function GetTempusRenderers(){
+		$renderer_paths = [];
+		Events::trigger(
+				'loadRenderers',
+				function & () use (&$renderer_paths)
+				{
+					return $renderer_paths;
+				}
+			);
+
+		Events::trigger(
+				'loadTempusRenderers',
+				function & () use (&$renderer_paths)
+				{
+					return $renderer_paths;
+				}
+			);
+		$this->terminateWithSuccess($renderer_paths);
+	}
+
 	
 	
 

application/controllers/api/frontend/v1/lv/Gruppe.php

@@ -118,54 +118,17 @@ class Gruppe extends FHCAPI_Controller
 
 		$query_words = explode(' ', $query);
 
-		$this->_ci->GruppeModel->addSelect('gruppe_kurzbz,
+		$gruppen_result = $this->_ci->GruppeModel->search($query_words);
-											studiengang_kz,
-											semester,
-											bezeichnung,
-											gid,
-											\'false\' as lehrverband');
-		$this->_ci->GruppeModel->db->where(array('sichtbar' => true, 'aktiv' => true, 'lehre' => true, 'direktinskription' => false, 'semester IS NOT NULL' => null));
-		$this->_ci->GruppeModel->db->group_start();
-		foreach ($query_words as $word)
-		{
-			$this->_ci->GruppeModel->db->group_start();
-			$this->_ci->GruppeModel->db->where('gruppe_kurzbz ILIKE', "%" . $word . "%");
-			$this->_ci->GruppeModel->db->or_where('bezeichnung ILIKE', "%" . $word . "%");
-			$this->_ci->GruppeModel->db->group_end();
-		}
-		$this->_ci->GruppeModel->db->group_end();
-
-		$gruppen_result = $this->_ci->GruppeModel->load();
-
-		$gruppen_array = array();
 
 		if (isError($gruppen_result))
 			$this->terminateWithError(getError($gruppen_result), self::ERROR_TYPE_GENERAL);
 
+		$gruppen_array = array();
+
 		if (hasData($gruppen_result))
 			$gruppen_array = getData($gruppen_result);
 
-		$this->_ci->LehrverbandModel->addSelect('CONCAT(UPPER(CONCAT(typ, kurzbz)), \'\', semester, verband, COALESCE(gruppe,\'\')) as gruppe_kurzbz,
+		$lehrverband_result = $this->_ci->LehrverbandModel->search($query_words);
-												studiengang_kz,
-												semester,
-												tbl_lehrverband.bezeichnung,
-												gid,
-												\'true\' as lehrverband');
-		$this->_ci->LehrverbandModel->addJoin('public.tbl_studiengang', 'studiengang_kz');
-		$this->_ci->LehrverbandModel->addOrder('verband');
-		$this->_ci->LehrverbandModel->addOrder('gruppe');
-		$this->_ci->LehrverbandModel->db->where(array('tbl_lehrverband.aktiv' => true));
-
-		$this->_ci->LehrverbandModel->db->group_start();
-		foreach ($query_words as $word)
-		{
-			$this->_ci->LehrverbandModel->db->group_start();
-			$this->_ci->LehrverbandModel->db->where('CONCAT(CONCAT(typ, kurzbz), \'\', semester, verband, COALESCE(gruppe,\'\')) ILIKE', "%" . $word . "%");
-			$this->_ci->LehrverbandModel->db->or_where('tbl_lehrverband.bezeichnung ILIKE', "%" . $word . "%");
-			$this->_ci->LehrverbandModel->db->group_end();
-		}
-		$this->_ci->LehrverbandModel->db->group_end();
-		$lehrverband_result = $this->_ci->LehrverbandModel->load();
 
 		$lehrverband_array = array();
 

application/controllers/api/frontend/v1/lv/StgTree.php

@@ -25,7 +25,25 @@ class StgTree extends FHCAPI_Controller
 			return $this->_outputAuthError([$method => ['admin:r', 'assistenz:r']]);
 		}
 
-		return $this->getStudiengang($method);
+		$count = count($params);
+		if (!$count)
+			return $this->getStudiengang($method);
+
+		if ($count == 1) {
+			if (is_numeric($params[0]))
+				return $this->getSemester($method, $params[0]);
+			else
+				return $this->getStudiengang($method, $params[0]);
+		}
+		if ($count == 2) {
+			if (is_numeric($params[0]))
+				return $this->getVerband($method, $params[0], $params[1]);
+			else
+				return $this->getSemester($method, $params[1], $params[0]);
+		}
+
+
+
 		show_404();
 	}
 
@@ -64,16 +82,27 @@ class StgTree extends FHCAPI_Controller
 		$this->terminateWithSuccess($list);
 	}
 
-	protected function getStudiengang($studiengang_kz)
+	protected function getStudiengang($studiengang_kz, $org_form = null)
 	{
 		$link = $studiengang_kz . '/';
+		if ($org_form !== null)
+			$link .= $org_form . '/';
 
 		$this->StudiengangModel->addJoin('public.tbl_lehrverband v', 'studiengang_kz');
 
 		$this->StudiengangModel->addDistinct();
 		$this->StudiengangModel->addSelect("CONCAT(" . $this->StudiengangModel->escape($link) . ", semester) AS link", false);
-		$this->StudiengangModel->addSelect("CONCAT(UPPER(CONCAT(typ, kurzbz)), '-', semester, (SELECT CASE WHEN bezeichnung IS NULL OR bezeichnung='' THEN ''::TEXT ELSE CONCAT(' (', bezeichnung, ')') END FROM public.tbl_lehrverband WHERE studiengang_kz=v.studiengang_kz AND semester=v.semester ORDER BY verband, gruppe LIMIT 1)) AS name", false);
+		$this->StudiengangModel->addSelect("CONCAT(
-		$this->StudiengangModel->addSelect("TRUE AS leaf", false);
+			UPPER(CONCAT(typ, kurzbz)), 
+			'-', 
+			semester, 
+			(
+				SELECT CASE WHEN bezeichnung IS NULL OR bezeichnung='' THEN ''::TEXT ELSE CONCAT(' (', bezeichnung, ')') END 
+				FROM public.tbl_lehrverband 
+				WHERE studiengang_kz=v.studiengang_kz AND semester=v.semester 
+				ORDER BY verband, gruppe LIMIT 1
+			)
+		) AS name", false);
 
 		$this->StudiengangModel->addSelect('semester');
 		$this->StudiengangModel->addSelect($this->StudiengangModel->escape($studiengang_kz) . '::integer AS stg_kz', false);
@@ -97,6 +126,8 @@ class StgTree extends FHCAPI_Controller
 				$this->StudienordnungModel->addDistinct();
 				$this->StudienordnungModel->addSelect("CONCAT(studiengang_kz, '/', p.orgform_kurzbz) AS link");
 				$this->StudienordnungModel->addSelect("p.orgform_kurzbz AS name");
+				$this->StudienordnungModel->addSelect("p.orgform_kurzbz AS orgform_kurzbz");
+				$this->StudienordnungModel->addSelect("studiengang_kz AS stg_kz");
 				$this->StudienordnungModel->addSelect("TRUE as leaf", false);
 
 				$this->StudienordnungModel->addJoin('lehre.tbl_studienplan p', 'studienordnung_id');
@@ -111,6 +142,115 @@ class StgTree extends FHCAPI_Controller
 				$list = array_merge($list, $result);
 			}
 		}
+		$this->terminateWithSuccess($list);
+	}
+
+	protected function getSemester($studiengang_kz, $semester, $org_form = null)
+	{
+		$link = $studiengang_kz . '/';
+		if ($org_form !== null)
+			$link .= $org_form . '/';
+		$link .= $semester . '/';
+
+
+		$this->load->model('organisation/Gruppe_model', 'GruppeModel');
+
+		$this->GruppeModel->addDistinct();
+		$this->GruppeModel->addSelect("CONCAT(" . $this->GruppeModel->escape($link . 'grp/') . ", gruppe_kurzbz) AS link", false);
+		$this->GruppeModel->addSelect("CONCAT(gruppe_kurzbz, ' (', bezeichnung, ')') AS name", false);
+		$this->GruppeModel->addSelect("TRUE AS leaf", false);
+
+		$this->GruppeModel->addSelect('sort');
+		$this->GruppeModel->addSelect('gruppe_kurzbz');
+		$this->GruppeModel->addSelect($this->GruppeModel->escape($studiengang_kz) . '::integer AS stg_kz', false);
+
+		$this->GruppeModel->addOrder('sort');
+		$this->GruppeModel->addOrder('gruppe_kurzbz');
+
+		$where = [
+			'studiengang_kz' => $studiengang_kz,
+			'semester' => $semester,
+			'lehre' => true,
+			'sichtbar' => true,
+			'aktiv' => true,
+			'direktinskription' => false
+		];
+
+		if ($org_form !== null)
+			$where['orgform_kurzbz'] = $org_form;
+
+		$result = $this->GruppeModel->loadWhere($where);
+
+		$list = $this->getDataOrTerminateWithError($result);
+
+		$this->StudiengangModel->addJoin('public.tbl_lehrverband v', 'studiengang_kz');
+
+		$this->StudiengangModel->addSelect("CONCAT(" . $this->StudiengangModel->escape($link) . ", verband) AS link", false);
+		$this->StudiengangModel->addSelect("CONCAT(UPPER(CONCAT(typ, kurzbz)), '-', semester, verband, (SELECT CASE WHEN bezeichnung IS NULL OR bezeichnung='' THEN ''::TEXT ELSE CONCAT(' (', bezeichnung, ')') END FROM public.tbl_lehrverband WHERE studiengang_kz=v.studiengang_kz AND semester=v.semester AND verband=v.verband ORDER BY gruppe LIMIT 1)) AS name", false);
+		$this->StudiengangModel->addSelect("CASE WHEN MAX(gruppe)='' OR MAX(gruppe)=' ' THEN TRUE ELSE FALSE END AS leaf");
+
+		$this->StudiengangModel->addSelect($this->StudiengangModel->escape($semester) . ' AS semester');
+		$this->StudiengangModel->addSelect('verband');
+		$this->StudiengangModel->addSelect($this->StudiengangModel->escape($studiengang_kz) . '::integer AS stg_kz', false);
+
+		$this->StudiengangModel->addOrder('verband');
+
+		$this->StudiengangModel->addGroupBy('link, name, verband');
+
+		$where = [
+			'v.studiengang_kz' => $studiengang_kz,
+			'v.semester' => $semester,
+			'v.verband !=' => '',
+			'v.aktiv' => true
+		];
+
+		if ($org_form !== null && $semester) // NOTE(chris): on semester 0 show all?
+			$where['v.orgform_kurzbz'] = $org_form;
+
+		$result = $this->StudiengangModel->loadWhere($where);
+		$result = $this->getDataOrTerminateWithError($result);
+
+		$list = array_merge($list, $result);
+
+		$this->terminateWithSuccess($list);
+	}
+
+	protected function getVerband($studiengang_kz, $semester, $verband, $org_form = null)
+	{
+		$link = $studiengang_kz . '/';
+		if ($org_form !== null)
+			$link .= $org_form . '/';
+		$link .= $semester . '/'. $verband . '/';
+
+
+		$this->StudiengangModel->addJoin('public.tbl_lehrverband v', 'studiengang_kz');
+
+		$this->StudiengangModel->addDistinct();
+		$this->StudiengangModel->addSelect("CONCAT(" . $this->StudiengangModel->escape($link) . ", gruppe) AS link", false);
+		$this->StudiengangModel->addSelect("CONCAT(UPPER(CONCAT(typ, kurzbz)), '-', semester, verband, gruppe, (SELECT CASE WHEN bezeichnung IS NULL OR bezeichnung='' THEN ''::TEXT ELSE CONCAT(' (', bezeichnung, ')') END FROM public.tbl_lehrverband WHERE studiengang_kz=v.studiengang_kz AND semester=v.semester AND verband=v.verband AND gruppe=v.gruppe ORDER BY gruppe LIMIT 1)) AS name", false);
+		$this->StudiengangModel->addSelect("TRUE AS leaf", false);
+
+		$this->StudiengangModel->addSelect('v.semester');
+		$this->StudiengangModel->addSelect('v.verband');
+		$this->StudiengangModel->addSelect('gruppe');
+		$this->StudiengangModel->addSelect($this->StudiengangModel->escape($studiengang_kz) . '::integer AS stg_kz', false);
+
+		$this->StudiengangModel->addOrder('gruppe');
+
+		$where = [
+			'v.studiengang_kz' => $studiengang_kz,
+			'v.semester' => $semester,
+			'v.verband' => $verband,
+			'v.gruppe !=' => '',
+			'v.aktiv' => true
+		];
+
+		if ($org_form !== null && $semester)
+			$where['v.orgform_kurzbz'] = $org_form;
+
+		$result = $this->StudiengangModel->loadWhere($where);
+
+		$list = $this->getDataOrTerminateWithError($result);
 
 		$this->terminateWithSuccess($list);
 	}

application/controllers/api/frontend/v1/tempus/Config.php

@@ -0,0 +1,133 @@
+<?php
+
+if (!defined('BASEPATH'))
+	exit('No direct script access allowed');
+
+
+class Config extends FHCAPI_Controller
+{
+	private $_ci;
+
+	public function __construct()
+	{
+		parent::__construct([
+			'get' => ['admin:r', 'assistenz:r'],
+			'getHeader' => ['admin:r', 'assistenz:r'],
+			'set' => ['admin:r', 'assistenz:r'],
+			'updateCollision' => ['admin:r', 'assistenz:r'],
+		]);
+
+		// Load Phrases
+		$this->loadPhrases([
+			'ui',
+		]);
+
+		$this->_ci = &get_instance();
+		$this->_ci->load->model('ressource/Kalenderstatus_model', 'KalenderStatusModel');
+		$this->_ci->load->model('system/Variable_model', 'VariableModel');
+		$this->_ci->load->library('VariableLib', array('uid' => getAuthUID()));
+	}
+
+	public function get()
+	{
+		$config = [];
+
+		$result = $this->_ci->VariableModel->getVariables(getAuthUID(), ['ignore_kollision', 'kollision_student', 'ignore_reservierung', 'ignore_zeitsperre', 'ignore_resources_collisions']);
+
+		$data = $this->getDataOrTerminateWithError($result);
+		$config['ignore_kollision'] = [
+			"type"  => "checkbox",
+			"label" => $this->p->t('ui', 'ignore_kollision'),
+			"value" => ($data['ignore_kollision'] ?? 'false') === 'true'
+
+		];
+
+		$config['kollision_student'] = [
+			"type"  => "checkbox",
+			"label" => $this->p->t('ui', 'kollision_student'),
+			"value" => ($data['kollision_student'] ?? 'false') === 'true'
+		];
+
+		$config['ignore_reservierung'] = [
+			"type"  => "checkbox",
+			"label" => $this->p->t('ui', 'ignore_reservierung'),
+			"value" => ($data['ignore_reservierung'] ?? 'false') === 'true'
+
+		];
+
+		$config['ignore_zeitsperre'] = [
+			"type"  => "checkbox",
+			"label" => $this->p->t('ui', 'ignore_zeitsperre'),
+			"value" => ($data['ignore_zeitsperre'] ?? 'false') === 'true'
+		];
+
+		$config['ignore_resources_collisions'] = [
+			"type"  => "checkbox",
+			"label" => $this->p->t('ui', 'ignore_resources_collisions'),
+			"value" => ($data['ignore_resources_collisions'] ?? 'false') === 'true'
+		];
+
+		$this->terminateWithSuccess($config);
+	}
+	public function getHeader()
+	{
+		$language = getUserLanguage() == 'German' ? 0 : 1;
+
+		$this->_ci->KalenderStatusModel->addSelect('*, array_to_json(bezeichnung_mehrsprachig::varchar[])->>' . $language .' AS status');
+		$this->_ci->KalenderStatusModel->addOrder('sort');
+		$this->_ci->KalenderStatusModel->db->where_not_in('status_kurzbz', array('archived', 'deleted'));
+		$visible_status = $this->_ci->KalenderStatusModel->load();
+
+		$visible_status = getData($visible_status);
+
+		$config['visible_status']['all'] = 'Alle';
+
+		foreach ($visible_status as $status)
+		{
+			$config['visible_status'][$status->status_kurzbz] = $status->status;
+		}
+
+		$this->terminateWithSuccess($config);
+	}
+
+	public function set()
+	{
+		$this->_ci->VariableModel->setVariable(
+			getAuthUID(),
+			'ignore_kollision',
+			$this->input->post('ignore_kollision') === true ? 'true' : 'false'
+		);
+		$this->_ci->VariableModel->setVariable(
+			getAuthUID(),
+			'kollision_student',
+			$this->input->post('kollision_student') === true ? 'true' : 'false'
+		);
+		$this->_ci->VariableModel->setVariable(
+			getAuthUID(),
+			'ignore_reservierung',
+			$this->input->post('ignore_reservierung') === true ? 'true' : 'false'
+		);
+		$this->_ci->VariableModel->setVariable(
+			getAuthUID(),
+			'ignore_zeitsperre',
+			$this->input->post('ignore_zeitsperre') === true ? 'true' : 'false'
+		);
+		$this->_ci->VariableModel->setVariable(
+			getAuthUID(),
+			'ignore_resources_collisions',
+			$this->input->post('ignore_resources_collisions') === true ? 'true' : 'false'
+		);
+		$this->terminateWithSuccess();
+	}
+
+	public function updateCollision()
+	{
+		$original_ignore = $this->_ci->variablelib->getVar('ignore_kollision');
+		$this->_ci->VariableModel->setVariable(
+			getAuthUID(),
+			'ignore_kollision',
+			$original_ignore === 'true' ? 'false' : 'true'
+		);
+	}
+
+}

application/controllers/api/frontend/v1/tempus/Coursepicker.php

@@ -0,0 +1,300 @@
+<?php
+
+if (! defined('BASEPATH')) exit('No direct script access allowed');
+
+class Coursepicker extends FHCAPI_Controller
+{
+	private $_ci;
+	public function __construct()
+	{
+		parent::__construct([
+			'search' => self::PERM_LOGGED,
+			'getByStg' => self::PERM_LOGGED
+		]);
+
+		$this->_ci = &get_instance();
+		$this->load->library('form_validation');
+
+		$this->_ci->load->model('education/lehreinheit_model', 'LehreinheitModel');
+		$this->_ci->load->model('education/Lehreinheitmitarbeiter_model', 'LehreinheitmitarbeiterModel');
+
+
+		$this->loadPhrases(['ui']);
+	}
+
+	public function search()
+	{
+		$query = $this->input->get('query');
+		if (is_null($query))
+			$this->terminateWithError($this->p->t('ui', 'ungueltigeParameter'), self::ERROR_TYPE_GENERAL);
+
+		$query_words = explode(' ', $query);
+
+		//TODO Where weiter anpassen z.B. Fachbereich
+		$this->_ci->LehreinheitModel->addSelect('tbl_lehreinheit.lehreinheit_id,
+												tbl_lehreinheit.lvnr,
+												tbl_lehreinheit.lehrfach_id,
+												lehrfach.kurzbz AS lehrfach,
+												lehrfach.bezeichnung AS lehrfach_bez,
+												lehrfach.farbe AS lehrfach_farbe,
+												tbl_lehreinheit.lehrform_kurzbz AS lehrform,
+												lema.mitarbeiter_uid AS lektor_uid,
+												tbl_mitarbeiter.kurzbz AS lektor,
+												tbl_studiengang.studiengang_kz,
+												upper(tbl_studiengang.typ::character varying::text || tbl_studiengang.kurzbz::text) AS studiengang,
+												lvb.semester,
+												lvb.verband,
+												lvb.gruppe,
+												lvb.gruppe_kurzbz,
+												tbl_lehreinheit.raumtyp,
+												tbl_lehreinheit.raumtypalternativ,
+												tbl_lehreinheit.stundenblockung,
+												tbl_lehreinheit.wochenrythmus,
+												lema.semesterstunden,
+												lema.planstunden,
+												tbl_lehreinheit.start_kw,
+												tbl_lehreinheit.anmerkung,
+												tbl_lehreinheit.studiensemester_kurzbz');
+
+		$this->_ci->LehreinheitModel->addJoin('lehre.tbl_lehreinheitmitarbeiter lema', 'tbl_lehreinheit.lehreinheit_id = lema.lehreinheit_id');
+		$this->_ci->LehreinheitModel->addJoin('lehre.tbl_lehreinheitgruppe lvb', 'tbl_lehreinheit.lehreinheit_id = lvb.lehreinheit_id');
+		$this->_ci->LehreinheitModel->addJoin('public.tbl_studiengang', 'lvb.studiengang_kz = tbl_studiengang.studiengang_kz');
+		$this->_ci->LehreinheitModel->addJoin('lehre.tbl_lehrveranstaltung lehrfach', 'tbl_lehreinheit.lehrfach_id = lehrfach.lehrveranstaltung_id');
+		$this->_ci->LehreinheitModel->addJoin('public.tbl_mitarbeiter', 'lema.mitarbeiter_uid = tbl_mitarbeiter.mitarbeiter_uid');
+		$this->_ci->LehreinheitModel->addJoin('lehre.tbl_lehrform', 'tbl_lehrform.lehrform_kurzbz = tbl_lehreinheit.lehrform_kurzbz');
+
+		$this->_ci->MitarbeiterModel->db->group_start();
+
+		foreach ($query_words as $word)
+		{
+			$this->_ci->LehreinheitModel->db->group_start();
+			$this->_ci->LehreinheitModel->db->where('lema.mitarbeiter_uid ILIKE', "%" . $word . "%");
+			$this->_ci->LehreinheitModel->db->or_where('lvb.gruppe_kurzbz ILIKE', "%" . $word . "%");
+			$this->_ci->LehreinheitModel->db->or_where('tbl_studiengang.kurzbzlang ILIKE', "%" . $word . "%");
+			$this->_ci->LehreinheitModel->db->or_where('lvb.verband ILIKE', "%" . $word . "%");
+			$this->_ci->LehreinheitModel->db->or_where('lvb.gruppe ILIKE', "%" . $word . "%");
+			$this->_ci->LehreinheitModel->db->or_where('lehrfach.bezeichnung ILIKE', "%" . $word . "%");
+
+			if (is_numeric($word))
+			{
+				$this->_ci->LehreinheitModel->db->or_where('tbl_studiengang.studiengang_kz', $word);
+				$this->_ci->LehreinheitModel->db->or_where('lvb.semester', $word);
+			}
+			$this->_ci->LehreinheitModel->db->group_end();
+
+		}
+		$this->_ci->LehreinheitModel->db->group_end();
+		$this->_ci->LehreinheitModel->db->where('tbl_lehreinheit.studiensemester_kurzbz = \'SS2025\'');
+		$this->_ci->LehreinheitModel->db->where(array('tbl_lehrform.verplanen' => true));
+
+		$result = $this->_ci->LehreinheitModel->load();
+
+		$this->terminateWithSuccess(hasData($result) ? getData($result) : array());
+	}
+
+	public function getByStg()
+	{
+		$this->_ci->form_validation->set_data($_POST);
+		$this->_ci->form_validation->set_rules('studiengaenge[]',"studiengaenge","required");
+		$this->_ci->form_validation->set_rules('studiensemester_kurzbz',"studiensemester_kurzbz","required");
+
+		if($this->_ci->form_validation->run() === FALSE)
+			$this->terminateWithValidationErrors($this->_ci->form_validation->error_array());
+
+		$studiengaenge = $this->input->post('studiengaenge');
+		$studiensemester_kurzbz = $this->input->post('studiensemester_kurzbz');
+
+		$this->_ci->LehreinheitModel->addSelect('
+			tbl_lehreinheit.lehreinheit_id,
+			tbl_lehreinheit.lvnr,
+			tbl_lehreinheit.lehrfach_id,
+			lehrfach.kurzbz AS lehrfach,
+			lehrfach.bezeichnung AS lehrfach_bez,
+			lehrfach.farbe AS lehrfach_farbe,
+			tbl_lehreinheit.lehrform_kurzbz AS lehrform,
+			lema.mitarbeiter_uid AS lektor_uid,
+			ma.kurzbz AS lektor,
+			tbl_person.vorname,
+			tbl_person.nachname,
+			tbl_studiengang.studiengang_kz,
+			upper(tbl_studiengang.typ::character varying::text || tbl_studiengang.kurzbz::text) AS studiengang,
+			lvb.semester,
+			lvb.verband,
+			lvb.gruppe,
+			lvb.gruppe_kurzbz,
+			tbl_lehreinheit.raumtyp,
+			tbl_lehreinheit.raumtypalternativ,
+			tbl_lehreinheit.stundenblockung,
+			tbl_lehreinheit.wochenrythmus,
+			lema.semesterstunden,
+			lema.planstunden,
+			tbl_lehreinheit.start_kw,
+			tbl_lehreinheit.anmerkung,
+			tbl_lehreinheit.studiensemester_kurzbz
+		');
+		$this->_ci->LehreinheitModel->addJoin('lehre.tbl_lehreinheitmitarbeiter lema', 'tbl_lehreinheit.lehreinheit_id = lema.lehreinheit_id');
+		$this->_ci->LehreinheitModel->addJoin('lehre.tbl_lehreinheitgruppe lvb', 'tbl_lehreinheit.lehreinheit_id = lvb.lehreinheit_id');
+		$this->_ci->LehreinheitModel->addJoin('public.tbl_studiengang', 'lvb.studiengang_kz = tbl_studiengang.studiengang_kz');
+		$this->_ci->LehreinheitModel->addJoin('lehre.tbl_lehrveranstaltung', 'tbl_lehreinheit.lehrveranstaltung_id = tbl_lehrveranstaltung.lehrveranstaltung_id');
+		$this->_ci->LehreinheitModel->addJoin('lehre.tbl_lehrveranstaltung lehrfach', 'tbl_lehreinheit.lehrfach_id = lehrfach.lehrveranstaltung_id');
+		$this->_ci->LehreinheitModel->addJoin('public.tbl_mitarbeiter ma', 'lema.mitarbeiter_uid = ma.mitarbeiter_uid');
+		$this->_ci->LehreinheitModel->addJoin('lehre.tbl_lehrform', 'tbl_lehrform.lehrform_kurzbz = tbl_lehreinheit.lehrform_kurzbz');
+		$this->_ci->LehreinheitModel->addJoin('public.tbl_benutzer', 'ma.mitarbeiter_uid = tbl_benutzer.uid');
+		$this->_ci->LehreinheitModel->addJoin('public.tbl_person', 'tbl_benutzer.person_id = tbl_person.person_id');
+
+		$this->_ci->LehreinheitModel->db->group_start();
+		$first = true;
+		foreach ($studiengaenge as $studiengang)
+		{
+			if ($first)
+				$this->_ci->LehreinheitModel->db->group_start();
+			else
+			{
+				$this->_ci->LehreinheitModel->db->or_group_start();
+			}
+			$first = false;
+
+			$this->_ci->LehreinheitModel->db->where('tbl_lehrveranstaltung.studiengang_kz', $studiengang['studiengang_kz']);
+
+			if (isset($studiengang['semester']))
+				$this->_ci->LehreinheitModel->db->where('tbl_lehrveranstaltung.semester', $studiengang['semester']);
+
+			if (isset($studiengang['orgform_kurzbz']))
+				$this->_ci->LehreinheitModel->db->where('tbl_lehrveranstaltung.orgform_kurzbz', $studiengang['orgform_kurzbz']);
+
+			$this->_ci->LehreinheitModel->db->group_end();
+		}
+		$this->_ci->LehreinheitModel->db->group_end();
+
+		$result = $this->_ci->LehreinheitModel->loadWhere(array(
+			'tbl_lehrform.verplanen' => true,
+			'tbl_lehreinheit.studiensemester_kurzbz' => $studiensemester_kurzbz
+		));
+
+		$result = hasData($result) ? getData($result) : array();
+
+		$lehreinheit_ids = array_values(array_unique(array_column($result, 'lehreinheit_id')));
+
+		$offen_map = array();
+		if (!empty($lehreinheit_ids))
+		{
+			$offen_result = $this->_ci->LehreinheitModel->getOffeneStunden($lehreinheit_ids);
+			if (hasData($offen_result))
+			{
+				foreach (getData($offen_result) as $row)
+				{
+					$offen_map[$row->lehreinheit_id . '_' . $row->mitarbeiter_uid] = $row;
+				}
+			}
+		}
+
+		$grouped = array();
+
+		foreach ($result as $row)
+		{
+			$lehreinheit_id = $row->lehreinheit_id;
+			if (!isset($grouped[$lehreinheit_id]))
+			{
+				$grouped[$lehreinheit_id] = (object)array(
+					'lehrfach_id' => $row->lehrfach_id,
+					'lehrfach_bez' => $row->lehrfach_bez,
+					'lehrfach_farbe' => $row->lehrfach_farbe,
+					'studiengang_kz' => $row->studiengang_kz,
+					'studiengang' => $row->studiengang,
+					'semester' => $row->semester,
+					'verband' => $row->verband,
+					'gruppe' => $row->gruppe,
+					'gruppe_kurzbz' => $row->gruppe_kurzbz,
+					'raumtyp' => $row->raumtyp,
+					'raumtypalternativ' => $row->raumtypalternativ,
+					'anmerkung' => $row->anmerkung,
+					'studiensemester_kurzbz' => $row->studiensemester_kurzbz,
+					'fachbereich_kurzbz' => isset($row->fachbereich_kurzbz) ? $row->fachbereich_kurzbz : null,
+					'lektoren' => array(),
+					'lehreinheit_id' => $lehreinheit_id,
+					'lvnr' => array(),
+					'lehrfach' => array(),
+					'lehrform' => array(),
+					'stundenblockung' => array(),
+					'wochenrythmus' => array(),
+					'planstunden' => array(),
+					'start_kw' => array(),
+					'verplant' => array(),
+					'offenestunden' => array(),
+					'lehrverband' => array(),
+					'lem' => array(),
+					'verplant_gesamt' => 0,
+				);
+			}
+
+			$group = $grouped[$lehreinheit_id];
+
+			$group->lektoren[$row->lektor_uid] = (object)array(
+				'uid' => $row->lektor_uid,
+				'kurzbz' => trim($row->lektor),
+				'name' => $row->vorname . ' ' . $row->nachname,
+			);
+
+			$group->lvnr[] = $row->lvnr;
+			$group->lehrfach[] = $row->lehrfach;
+			$group->lehrform[] = $row->lehrform;
+			$group->stundenblockung[] = $row->stundenblockung;
+			$group->wochenrythmus[] = $row->wochenrythmus;
+			$group->planstunden[] = $row->planstunden;
+			$group->start_kw[] = $row->start_kw;
+
+			$offen_key = $lehreinheit_id . '_' . $row->lektor_uid;
+			$offen = isset($offen_map[$offen_key]) ? $offen_map[$offen_key] : null;
+			$verplant_wert = $offen ? $offen->verplant : 0;
+			$offenestunden_wert = $offen ? $offen->offenestunden : 0;
+
+			$group->verplant[] = $verplant_wert;
+			$group->offenestunden[] = $offenestunden_wert;
+			$group->verplant_gesamt += $verplant_wert;
+
+			$lvb = $row->studiengang . '-' . $row->semester;
+
+			if ($row->verband != '' && $row->verband != ' ' && $row->verband != '0' && $row->verband != null)
+				$lvb .= $row->verband;
+
+			if ($row->gruppe != '' && $row->gruppe != ' ' && $row->gruppe != '0' && $row->gruppe != null)
+				$lvb .= $row->gruppe;
+
+			$group->lehrverband[] = ($row->gruppe_kurzbz != '' && $row->gruppe_kurzbz != null) ? $row->gruppe_kurzbz : $lvb;
+
+			$group->lem[] = array(
+				'lehreinheit_id' => $row->lehreinheit_id,
+				'mitarbeiter_uid' => $row->lektor_uid,
+			);
+		}
+
+		foreach ($grouped as $group)
+		{
+			$group->lektoren = array_values($group->lektoren);
+			$group->lehrverband = array_values(array_unique($group->lehrverband));
+			$group->lehrfach = $this->_formatArr($group->lehrfach);
+			$group->lehrform = $this->_formatArr($group->lehrform);
+			$group->stundenblockung = $this->_formatArr($group->stundenblockung);
+			$group->wochenrythmus = $this->_formatArr($group->wochenrythmus);
+			$group->planstunden = $this->_formatArr($group->planstunden);
+			$group->start_kw = $this->_formatArr($group->start_kw);
+			$group->verplant = $this->_formatArr($group->verplant);
+			$group->offenestunden = $this->_formatArr($group->offenestunden);
+		}
+
+		$this->terminateWithSuccess(array_values($grouped));
+	}
+
+	private function _formatArr($arr)
+	{
+		$values = array_values(array_unique($arr));
+		$formatted = implode(' ', $values);
+
+		if (count($values) > 1)
+			$formatted .= ' ?';
+
+		return $formatted;
+	}
+
+
+}

application/controllers/api/frontend/v1/tempus/Favorites.php

@@ -0,0 +1,47 @@
+<?php
+
+if (! defined('BASEPATH')) exit('No direct script access allowed');
+
+class Favorites extends FHCAPI_Controller
+{
+	public function __construct()
+	{
+		parent::__construct([
+			'index' => self::PERM_LOGGED,
+			'set' => self::PERM_LOGGED
+		]);
+
+		// Load models
+		$this->load->model('system/Variable_model', 'VariableModel');
+	}
+
+	public function index()
+	{
+		$result = $this->VariableModel->getVariables(getAuthUID(), ['tempus_favorites']);
+
+		$data = $this->getDataOrTerminateWithError($result);
+
+		if (!$data)
+			$this->terminateWithSuccess(null);
+		else
+			$this->terminateWithSuccess(isset($data['tempus_favorites']) ? $data['tempus_favorites'] : null);
+	}
+
+	public function set()
+	{
+		$this->load->library('form_validation');
+
+		$this->form_validation->set_rules('favorites', 'Favorites', 'required');
+
+		if (!$this->form_validation->run())
+			$this->terminateWithValidationErrors($this->form_validation->error_array());
+
+		$favorites = $this->input->post('favorites');
+
+		$result = $this->VariableModel->setVariable(getAuthUID(), 'tempus_favorites', $favorites);
+
+		$this->getDataOrTerminateWithError($result);
+		
+		$this->terminateWithSuccess(true);
+	}
+}

application/controllers/api/frontend/v1/tempus/Info.php

@@ -0,0 +1,37 @@
+<?php
+if (! defined('BASEPATH')) exit('No direct script access allowed');
+
+class Info extends FHCAPI_Controller
+{
+
+	private $_ci;
+
+	/**
+	 * Object initialization
+	 */
+	public function __construct()
+	{
+		parent::__construct([
+			'getStudiengaenge' => self::PERM_LOGGED,
+		]);
+
+		$this->_ci =& get_instance();
+
+		$this->load->model('organisation/Studiengang_model', 'StudiengangModel');
+
+		$this->loadPhrases([
+			'ui'
+		]);
+
+	}
+
+	public function getStudiengaenge()
+	{
+		$this->_ci->StudiengangModel->addDistinct();
+		$this->_ci->StudiengangModel->addSelect('studiengang_kz');
+		$this->_ci->StudiengangModel->addSelect("CONCAT(kurzbzlang, ' (', UPPER(CONCAT(typ, kurzbz)), ') - ', tbl_studiengang.bezeichnung) AS name");
+
+		$result = $this->getDataOrTerminateWithError($this->_ci->StudiengangModel->load());
+		$this->terminateWithSuccess($result);
+	}
+}

application/controllers/api/frontend/v1/tempus/Kalender.php

@@ -0,0 +1,437 @@
+<?php
+if (! defined('BASEPATH')) exit('No direct script access allowed');
+
+class Kalender extends FHCAPI_Controller
+{
+
+	private $_ci;
+	const ALLOWED_PLAN_FILTER = ['ort', 'uid', 'stg'];
+	const ALLOWED_ROOM_FILTER = ['lehreinheit_id', 'kalender_id'];
+
+	const ALLOWED_TO_UPDATE = ['start_time', 'end_time', 'ort_kurzbz'];
+	/**
+	 * Object initialization
+	 */
+	public function __construct()
+	{
+		parent::__construct([
+			'getStunden' => self::PERM_LOGGED,
+			'getCalendarHours' => self::PERM_LOGGED,
+			'getPlan' => self::PERM_LOGGED,
+			'getPlanByOrt' => self::PERM_LOGGED,
+			'getRaumvorschlag' => self::PERM_LOGGED,
+			'getHistory' => 'lehre/lvplan:rw',
+			'deleteEntry' => 'lehre/lvplan:rw',
+			'syncToLecturer' => 'lehre/lvplan:rw',
+			'syncToStudent' => 'lehre/lvplan:rw',
+			'getPlanLecturer' =>'lehre/lvplan:rw',
+			'getPlanStudent' => 'lehre/lvplan:rw',
+			'getZeitwuensche' => self::PERM_LOGGED,
+			'getZeitsperren' => self::PERM_LOGGED,
+			'updateKalenderEvent' => 'lehre/lvplan:rw',
+			'addKalenderEvent' => 'lehre/lvplan:rw',
+			'calculateMultiWeekPlan' => 'lehre/lvplan:rw',
+			'confirmMultiWeekPlan' => 'lehre/lvplan:rw',
+			'addToKalenderEvent' => 'lehre/lvplan:rw',
+			'sync' => 'lehre/lvplan:rw',
+		]);
+
+		$this->_ci =& get_instance();
+
+		$this->_ci->load->library('LogLib');
+		$this->_ci->load->library('form_validation');
+		$this->_ci->load->library('KalenderLib', ["uid" => getAuthUID()]);
+		$this->_ci->load->library('RaumvorschlagLib', ["uid" => getAuthUID()]);
+		$this->loadPhrases([
+			'ui'
+		]);
+		$this->_ci->load->config('tempus');
+
+
+		$this->_ci->loglib->setConfigs(array(
+			'classIndex' => 5,
+			'functionIndex' => 5,
+			'lineIndex' => 4,
+			'dbLogType' => 'API', // required
+			'dbExecuteUser' => 'RESTful API'
+		));
+	}
+
+	//------------------------------------------------------------------------------------------------------------------
+	// Public methods
+	/**
+	 * fetches Stunden layout from database
+	 * @access public
+	 *
+	 */
+	public function getStunden()
+	{
+		$this->load->model('ressource/Stunde_model', 'StundeModel');
+
+		$this->_ci->StundeModel->addOrder('stunde', 'ASC');
+		$stunden = $this->_ci->StundeModel->load();
+
+		$stunden = $this->getDataOrTerminateWithError($stunden);
+
+		$this->terminateWithSuccess($stunden);
+	}
+
+	public function getCalendarHours()
+	{
+		$calender_start = $this->_ci->config->item('calendar_start') ?? 7;
+		$calender_end = $this->_ci->config->item('calendar_end') ?? 23;
+
+		$this->terminateWithSuccess(array(
+			'start' => $calender_start,
+			'end' => $calender_end
+		));
+	}
+
+	public function getPlan()
+	{
+		$this->_ci->form_validation->set_data($_POST);
+		$this->_ci->form_validation->set_rules('start_date',"start_date","required");
+		$this->_ci->form_validation->set_rules('end_date',"end_date","required");
+
+		if($this->_ci->form_validation->run() === FALSE)
+			$this->terminateWithValidationErrors($this->_ci->form_validation->error_array());
+
+		$start_date = $this->_ci->input->post('start_date', TRUE);
+		$end_date = $this->_ci->input->post('end_date', TRUE);
+
+		$filter = $this->_checkFilter(self::ALLOWED_PLAN_FILTER);
+
+		$stundenplan_data = $this->_ci->kalenderlib->getPlanForPlanner(
+			$start_date,
+			$end_date,
+			isset($filter->ort) ? $filter->ort : null,
+			isset($filter->uid) ? $filter->uid : null,
+			isset($filter->stg) ? $filter->stg : null
+		);
+
+		$this->terminateWithSuccess($stundenplan_data);
+	}
+
+	public function getPlanStudent()
+	{
+		$this->_ci->form_validation->set_data($_GET);
+		$this->_ci->form_validation->set_rules('start_date',"start_date","required");
+		$this->_ci->form_validation->set_rules('end_date',"end_date","required");
+
+		if($this->_ci->form_validation->run() === FALSE)
+			$this->terminateWithValidationErrors($this->_ci->form_validation->error_array());
+
+		$start_date = $this->_ci->input->get('start_date', TRUE);
+		$end_date = $this->_ci->input->get('end_date', TRUE);
+
+		$stundenplan_data = $this->_ci->kalenderlib->getPlanForStudent(
+			$start_date,
+			$end_date
+		);
+
+		$this->terminateWithSuccess($stundenplan_data);
+	}
+
+	public function getPlanLecturer()
+	{
+		$this->_ci->form_validation->set_data($_GET);
+		$this->_ci->form_validation->set_rules('start_date',"start_date","required");
+		$this->_ci->form_validation->set_rules('end_date',"end_date","required");
+
+		if($this->_ci->form_validation->run() === FALSE)
+			$this->terminateWithValidationErrors($this->_ci->form_validation->error_array());
+
+		$start_date = $this->_ci->input->get('start_date', TRUE);
+		$end_date = $this->_ci->input->get('end_date', TRUE);
+
+		$stundenplan_data = $this->_ci->kalenderlib->getPlanForLecturer(
+			$start_date,
+			$end_date
+		);
+
+		$this->terminateWithSuccess($stundenplan_data);
+	}
+
+	public function getPlanByOrt($start_date = null, $end_date = null, $ort = null)
+	{
+		if (!isset($start_date) || !isset($end_date) || !isset($ort))
+		{
+			$this->_ci->form_validation->set_data($_GET);
+			$this->_ci->form_validation->set_rules('start_date',"start_date","required");
+			$this->_ci->form_validation->set_rules('end_date',"end_date","required");
+			$this->_ci->form_validation->set_rules('ort',"ort","required");
+			if($this->_ci->form_validation->run() === FALSE)
+				$this->terminateWithValidationErrors($this->_ci->form_validation->error_array());
+
+			$start_date = $this->_ci->input->get('start_date', TRUE);
+			$end_date = $this->_ci->input->get('end_date', TRUE);
+			$ort = $this->_ci->input->get('ort', TRUE);
+		}
+
+		$this->terminateWithSuccess($this->_ci->kalenderlib->getPlanByOrt($start_date, $end_date, $ort));
+	}
+
+	public function getZeitsperren()
+	{
+		$this->_ci->form_validation->set_data($_GET);
+		$this->_ci->form_validation->set_rules('start_date',"start_date","required");
+		$this->_ci->form_validation->set_rules('end_date',"end_date","required");
+		$this->_ci->form_validation->set_rules('emp',"emp","required");
+		if($this->_ci->form_validation->run() === FALSE)
+			$this->terminateWithValidationErrors($this->_ci->form_validation->error_array());
+
+		$start_date = $this->_ci->input->get('start_date', TRUE);
+		$end_date = $this->_ci->input->get('end_date', TRUE);
+		$emp = $this->_ci->input->get('emp', TRUE);
+
+		$stundenplan_data = $this->_ci->kalenderlib->getZeitsperren($start_date, $end_date, $emp);
+
+		$this->terminateWithSuccess($stundenplan_data);
+	}
+
+	public function getZeitwuensche()
+	{
+		$this->_ci->form_validation->set_data($_GET);
+		$this->_ci->form_validation->set_rules('start_date',"start_date","required");
+		$this->_ci->form_validation->set_rules('end_date',"end_date","required");
+		$this->_ci->form_validation->set_rules('emp',"emp","required");
+
+		if($this->_ci->form_validation->run() === FALSE)
+			$this->terminateWithValidationErrors($this->_ci->form_validation->error_array());
+
+		$start_date = $this->_ci->input->get('start_date', TRUE);
+		$end_date = $this->_ci->input->get('end_date', TRUE);
+		$emp = $this->_ci->input->get('emp', TRUE);
+
+		$stundenplan_data = $this->_ci->kalenderlib->getZeitwuensche($start_date, $end_date, $emp);
+
+		$this->terminateWithSuccess($stundenplan_data);
+	}
+
+	public function updateKalenderEvent()
+	{
+		$this->_ci->form_validation->set_data($_POST);
+		$this->_ci->form_validation->set_rules('kalender_id',"kalender_id","required");
+
+		if($this->_ci->form_validation->run() === FALSE)
+			$this->terminateWithValidationErrors($this->_ci->form_validation->error_array());
+
+		$updateFields = $this->_checkUpdate($this->_ci->input->post('updatedInfos', TRUE));
+		$kalender_id = $this->_ci->input->post('kalender_id', TRUE);
+
+		$result = $this->_ci->kalenderlib->updateKalenderEvent($kalender_id, $updateFields->ort_kurzbz ?? null,  $updateFields->start_time ?? null,  $updateFields->end_time ?? null);
+
+		if (isError($result))
+			$this->terminateWithError(getError($result),  $result->code);
+
+		$this->terminateWithSuccess(getData($result));
+	}
+
+	public function getRaumvorschlag()
+	{
+		$this->_ci->form_validation->set_data($_POST);
+
+		$filter = $this->_checkFilter(self::ALLOWED_ROOM_FILTER);
+		$this->terminateWithSuccess($this->_ci->raumvorschlaglib->getVorschlaege($filter->kalender_id));
+	}
+
+	public function getHistory()
+	{
+		$this->_ci->form_validation->set_data($_GET);
+		$this->_ci->form_validation->set_rules('kalender_id',"kalender_id","required");
+
+		if($this->_ci->form_validation->run() === FALSE)
+			$this->terminateWithValidationErrors($this->_ci->form_validation->error_array());
+
+		$kalender_id = $this->_ci->input->get('kalender_id', TRUE);
+
+		$result = $this->_ci->kalenderlib->getHistory($kalender_id);
+
+		if (isError($result))
+			$this->terminateWithError(getError($result));
+
+		$this->terminateWithSuccess(getData($result));
+	}
+
+	public function deleteEntry()
+	{
+		$this->_ci->form_validation->set_data($_POST);
+		$this->_ci->form_validation->set_rules('kalender_id', "kalender_id", "required");
+
+		if($this->_ci->form_validation->run() === FALSE)
+			$this->terminateWithValidationErrors($this->_ci->form_validation->error_array());
+
+		$kalender_id = $this->_ci->input->post('kalender_id', TRUE);
+
+		$result = $this->_ci->kalenderlib->deleteEntry($kalender_id);
+
+		if (isError($result))
+			$this->terminateWithError(getError($result));
+
+		$this->terminateWithSuccess(getData($result));
+	}
+
+	public function sync()
+	{
+		$result = $this->_ci->kalenderlib->sync();
+		$this->terminateWithSuccess(getData($result));
+	}
+	public function syncToLecturer()
+	{
+		$this->_ci->form_validation->set_data($_POST);
+		$this->_ci->form_validation->set_rules('kalender_id', "kalender_id", "required");
+
+		if($this->_ci->form_validation->run() === FALSE)
+			$this->terminateWithValidationErrors($this->_ci->form_validation->error_array());
+
+		$kalender_id = $this->_ci->input->post('kalender_id', TRUE);
+
+		$result = $this->_ci->kalenderlib->updateStatus($kalender_id, 'sync_preview');
+
+		if (isError($result))
+			$this->terminateWithError(getError($result));
+
+		$this->terminateWithSuccess(getData($result));
+	}
+	public function syncToStudent()
+	{
+		$this->_ci->form_validation->set_data($_POST);
+		$this->_ci->form_validation->set_rules('kalender_id', "kalender_id", "required");
+
+		if($this->_ci->form_validation->run() === FALSE)
+			$this->terminateWithValidationErrors($this->_ci->form_validation->error_array());
+
+		$kalender_id = $this->_ci->input->post('kalender_id', TRUE);
+
+		$result = $this->_ci->kalenderlib->updateStatus($kalender_id, 'sync_live');
+
+		if (isError($result))
+			$this->terminateWithError(getError($result));
+
+		$this->terminateWithSuccess(getData($result));
+	}
+	public function addKalenderEvent()
+	{
+		$this->_ci->form_validation->set_data($_POST);
+		$this->_ci->form_validation->set_rules('lehreinheit_id',"lehreinheit_id","required");
+		$this->_ci->form_validation->set_rules('start_date',"start_date","required");
+		$this->_ci->form_validation->set_rules('end_date',"end_date","required");
+
+		if($this->_ci->form_validation->run() === FALSE)
+			$this->terminateWithValidationErrors($this->_ci->form_validation->error_array());
+
+		$lehreinheit_id = $this->_ci->input->post('lehreinheit_id', TRUE);
+		$ort_kurzbz = $this->_ci->input->post('ort_kurzbz', TRUE);
+		$start_date = $this->_ci->input->post('start_date', TRUE);
+		$end_date = $this->_ci->input->post('end_date', TRUE);
+		$result = $this->_ci->kalenderlib->addKalenderEvent($start_date, $end_date, $lehreinheit_id, $ort_kurzbz);
+
+		if (isError($result))
+			$this->terminateWithError(getError($result));
+
+		$this->terminateWithSuccess(getData($result));
+	}
+
+	public function calculateMultiWeekPlan()
+	{
+		$this->_ci->form_validation->set_data($_POST);
+		$this->_ci->form_validation->set_rules('lehreinheit_id',"lehreinheit_id","required");
+		$this->_ci->form_validation->set_rules('start_date',"start_date","required");
+		$this->_ci->form_validation->set_rules('end_date',"end_date","required");
+
+		if($this->_ci->form_validation->run() === FALSE)
+			$this->terminateWithValidationErrors($this->_ci->form_validation->error_array());
+
+		$lehreinheit_id = $this->_ci->input->post('lehreinheit_id', TRUE);
+		$ort_kurzbz = $this->_ci->input->post('ort_kurzbz', TRUE);
+		$start_date = $this->_ci->input->post('start_date', TRUE);
+		$end_date = $this->_ci->input->post('end_date', TRUE);
+
+		$result = $this->_ci->kalenderlib->calculateMultiWeekPlan($start_date, $end_date, $lehreinheit_id, $ort_kurzbz);
+
+		if (isError($result))
+			$this->terminateWithError(getError($result));
+
+		$this->terminateWithSuccess(getData($result));
+	}
+
+	public function confirmMultiWeekPlan()
+	{
+		$this->_ci->form_validation->set_data($_POST);
+		$this->_ci->form_validation->set_rules('plan[]',"plan","required");
+		$this->_ci->form_validation->set_rules('lehreinheit_id',"lehreinheit_id","required");
+
+		if($this->_ci->form_validation->run() === FALSE)
+			$this->terminateWithValidationErrors($this->_ci->form_validation->error_array());
+
+		$plan = $this->_ci->input->post('plan', TRUE);
+		$lehreinheit_id = $this->_ci->input->post('lehreinheit_id', TRUE);
+
+		$result = $this->_ci->kalenderlib->confirmMultiWeekPlan($plan, $lehreinheit_id);
+
+		if (isError($result))
+			$this->terminateWithError(getError($result));
+
+		$this->terminateWithSuccess(getData($result));
+	}
+
+	public function addToKalenderEvent()
+	{
+		$this->_ci->form_validation->set_data($_POST);
+		$this->_ci->form_validation->set_rules('target_kalender_id',"target_kalender_id","required");
+		$this->_ci->form_validation->set_rules('lehreinheit_id',"lehreinheit_id","required");
+
+		if($this->_ci->form_validation->run() === FALSE)
+			$this->terminateWithValidationErrors($this->_ci->form_validation->error_array());
+
+		$target_kalender_id = $this->_ci->input->post('target_kalender_id', TRUE);
+		$lehreinheit_id = $this->_ci->input->post('lehreinheit_id', TRUE);
+
+		$result = $this->_ci->kalenderlib->addToKalenderEvent($target_kalender_id, $lehreinheit_id);
+
+		if (isError($result))
+			$this->terminateWithError(getError($result));
+
+		$this->terminateWithSuccess(getData($result));
+	}
+
+
+	private function _checkFilter($filters)
+	{
+		$filter_valid = true;
+		$filter_object = new stdClass();
+		foreach ($filters as $filter)
+		{
+			if ($this->_ci->input->post($filter))
+			{
+				$filter_valid = true;
+				$filter_object->$filter = $this->_ci->input->post($filter);
+			}
+		}
+
+		if (!$filter_valid)
+			$this->terminateWithError($this->p->t('ui', 'ungueltigeParameter'), self::ERROR_TYPE_GENERAL);
+
+		return $filter_object;
+	}
+
+	private function _checkUpdate($updateInfos)
+	{
+		$update_valid = false;
+		$update_object = new stdClass();
+		foreach (self::ALLOWED_TO_UPDATE as $filter)
+		{
+			if (isset($updateInfos[$filter]))
+			{
+				$update_valid = true;
+				$update_object->$filter = $updateInfos[$filter];
+			}
+		}
+
+		if (!$update_valid)
+			$this->terminateWithError($this->p->t('ui', 'ungueltigeParameter'), self::ERROR_TYPE_GENERAL);
+
+
+		return $update_object;
+	}
+}

application/controllers/api/frontend/v1/tempus/OperationalResourceToCalenderAPI.php

@@ -0,0 +1,84 @@
+<?php
+if (! defined('BASEPATH')) exit('No direct script access allowed');
+
+class OperationalResourceToCalenderAPI extends FHCAPI_Controller
+{
+	/**
+	 * Object initialization
+	 */
+	public function __construct()
+	{
+		parent::__construct([
+			'getAssignedResourcesByCalender' => ['admin:r', 'assistenz:r'],
+			'storeResourcesToCalendarRelationship' => ['admin:w', 'assistenz:w'],
+			'getSchedulableResourcesByCalendar' => ['admin:r', 'assistenz:r'],
+		]);
+
+		$this->load->model('ressource/BetriebsmittelKalender_model', 'BetriebsmittelKalenderModel');
+		$this->load->model('ressource/Betriebsmittel_model', 'BetriebsmittelModel');
+		$this->load->model('ressource/Kalender_model', 'KalenderModel');
+
+		$this->load->library('CollisionChecker', ["uid" => getAuthUID()]);
+		$this->load->library('KalenderLib', ["uid" => getAuthUID()]);
+	}
+
+	//------------------------------------------------------------------------------------------------------------------
+	// Public methods
+	public function getSchedulableResourcesByCalendar($calenderID)
+	{ 
+		if (!isset($calenderID)) $this->terminateWithError("Missing required parameter 'kalender_id'");
+
+		$result = $this->KalenderModel->loadWhere(['kalender_id' => $calenderID]);
+		if (isError($result)) $this->terminateWithError("Calendar with id '$calenderID' does not have a valid group id");
+ 
+		$calender = $this->getDataOrTerminateWithError($result)[0];
+		if (!isset($calender)) $this->terminateWithError("Calendar with id '$calenderID' not found");
+
+		$result = $this->BetriebsmittelModel->getSchedulableEntriesByDatetimeInterval($calender->von, $calender->bis);
+		$this->terminateWithSuccess($this->getDataOrTerminateWithError($result));
+	}
+
+	public function getAssignedResourcesByCalender($calenderID)
+	{
+		if (!isset($calenderID)) $this->terminateWithError("Missing required parameter 'kalender_id'");
+
+		$result = $this->KalenderModel->loadWhere(['kalender_id' => $calenderID]);
+		if (empty($result)) $this->terminateWithError("Calendar with id '$calenderID' not found");
+ 
+		$calenderGroupID = $this->getDataOrTerminateWithError($result)[0]->eindeutige_kalender_gruppen_id;
+		if (!isset($calenderGroupID)) $this->terminateWithError("Calendar with id '$calenderID' does not have a valid group id");
+
+
+		$this->BetriebsmittelKalenderModel->addSelect(['tbl_betriebsmittel_kalender.*', 'tbl_betriebsmittel.beschreibung', 'tbl_betriebsmittel.verplanen']);
+		$this->BetriebsmittelKalenderModel->addJoin('wawi.tbl_betriebsmittel', 'betriebsmittel_id');
+		$result = $this->BetriebsmittelKalenderModel->loadWhere([
+			'eindeutige_kalender_gruppen_id' => $calenderGroupID,
+			'tbl_betriebsmittel.verplanen' => true,
+		]);
+
+		$this->terminateWithSuccess($this->getDataOrTerminateWithError($result));
+	}
+
+	public function storeResourcesToCalendarRelationship()
+	{
+		$calenderID = $this->input->post('kalender_id');
+		$assignedResources = $this->input->post('assignedResources');
+
+		if (!isset($calenderID)) $this->terminateWithError("Missing required parameter 'kalender_id'", 'general');
+		if (!isset($assignedResources)) $this->terminateWithError("Missing required parameter 'assignedResources'", 'general');
+
+		$result = $this->KalenderModel->loadWhere(['kalender_id' => $calenderID]);
+		if (empty($result)) $this->terminateWithError("Calendar with id '$calenderID' not found");
+
+		$calendar = $this->getDataOrTerminateWithError($result)[0];
+		
+		$calenderGroupID = $calendar->eindeutige_kalender_gruppen_id;
+		if (!isset($calenderGroupID)) $this->terminateWithError("Calendar with id '$calenderID' does not have a valid group id");
+
+		$result = $this->kalenderlib->addOperationalResourcesToKalenderEvent($calendar, $assignedResources);
+		if (isError($result))
+			$this->terminateWithError(getError($result));
+
+		$this->terminateWithSuccess(['message' => 'Resources assigned successfully']);
+	}
+}

application/controllers/api/frontend/v1/tempus/Reservierung.php

@@ -0,0 +1,231 @@
+<?php
+if (! defined('BASEPATH')) exit('No direct script access allowed');
+
+class Reservierung extends FHCAPI_Controller
+{
+	private $_ci;
+
+	/**
+	 * Object initialization
+	 */
+	public function __construct()
+	{
+		parent::__construct([
+			'addReservierung' => 'lehre/lvplan:rw',
+			'getRollen' => 'lehre/lvplan:rw',
+			'getInformation' => 'lehre/lvplan:rw',
+			'getLektor' => 'lehre/lvplan:rw',
+			'searchGroup' => 'lehre/lvplan:rw',
+		]);
+
+		$this->_ci =& get_instance();
+
+		$this->_ci->load->library('LogLib');
+		$this->_ci->load->library('form_validation');
+		$this->_ci->load->library('KalenderLib', ["uid" => getAuthUID()]);
+
+		$this->_ci->load->model('ressource/Ort_model', 'OrtModel');
+		$this->_ci->load->model('ressource/Kalender_Event_Rolle_model', 'KalenderEventRolleModel');
+		$this->_ci->load->model('organisation/Studiengang_model', 'StudiengangModel');
+		$this->_ci->load->model('organisation/Studiensemester_model', 'StudiensemesterModel');
+		$this->_ci->load->model('organisation/gruppe_model', 'GruppeModel');
+
+
+		$this->loadPhrases([
+			'ui'
+		]);
+	}
+
+	//------------------------------------------------------------------------------------------------------------------
+	// Public methods
+
+	public function getInformation()
+	{
+		$return_array = array('berechtigt' => false, 'studiengaenge' => []);
+
+		$this->_ci->OrtModel->db->join("
+					(select ort,standort_id,strasse, plz
+					FROM public.tbl_standort
+					LEFT JOIN public.tbl_adresse USING(adresse_id)
+				) standort", "standort_id", "LEFT", false);
+
+		$raeume = $this->_ci->OrtModel->loadWhere(array('aktiv' => true, 'reservieren' => true));
+		$return_array['raeume'] = hasData($raeume) ? getData($raeume) : [];
+
+		if (!$this->_ci->permissionlib->isBerechtigt('lehre/reservierung'))
+			$this->terminateWithSuccess($return_array);
+
+		$stg_berechtigungen = $this->_ci->permissionlib->getSTG_isEntitledFor('lehre/reservierung');
+		if (isEmptyArray($stg_berechtigungen))
+			$this->terminateWithSuccess($return_array);
+
+		$this->_ci->StudiengangModel->addSelect('studiengang_kz, UPPER(CONCAT(typ, kurzbz)) as kuerzel, kurzbzlang');
+		$this->_ci->StudiengangModel->addOrder('typ, kurzbz');
+		$this->_ci->StudiengangModel->db->where_in('studiengang_kz', $stg_berechtigungen);
+		$studiengaenge = $this->_ci->StudiengangModel->loadWhere(array('aktiv' => true));
+
+		if (isError($studiengaenge))
+			$this->terminateWithError(getError($studiengaenge));
+		$language = getUserLanguage() == 'German' ? 0 : 1;
+		$this->_ci->KalenderEventRolleModel->addOrder('sort');
+		$this->_ci->KalenderEventRolleModel->addSelect('rolle_kurzbz, array_to_json(bezeichnung_mehrsprachig::varchar[])->>'. $language. ' as bezeichnung');
+
+		$rollen = $this->_ci->KalenderEventRolleModel->load();
+
+		$this->_ci->StudiensemesterModel->addOrder('start', 'DESC');
+		$studiensemester = $this->_ci->StudiensemesterModel->load();
+
+		$return_array['studiengaenge'] = hasData($studiengaenge) ? getData($studiengaenge) : [];
+		$return_array['berechtigt'] = true;
+		$return_array['rollen'] = hasData($rollen) ? getData($rollen) : [];
+		$return_array['studiensemester'] = hasData($studiensemester) ? getData($studiensemester) : [];
+
+
+		$this->terminateWithSuccess($return_array);
+	}
+	public function getRaeume()
+	{
+
+		$this->_ci->OrtModel->db->join("
+					(select ort,standort_id,strasse, plz
+					FROM public.tbl_standort
+					LEFT JOIN public.tbl_adresse USING(adresse_id)
+				) standort", "standort_id", "LEFT", false);
+
+		$result = $this->_ci->OrtModel->loadWhere(array('aktiv' => true, 'reservieren' => true));
+
+		$this->terminateWithSuccess(hasData($result) ? getData($result) : []);
+	}
+
+	public function searchGroup()
+	{
+		$query = $this->input->get('query');
+		if (is_null($query))
+			$this->terminateWithError($this->_ci->p->t('ui', 'ungueltigeParameter'), self::ERROR_TYPE_GENERAL);
+
+		$stg_berechtigungen = $this->_ci->permissionlib->getSTG_isEntitledFor('lehre/reservierung');
+
+		if (isEmptyArray($stg_berechtigungen))
+			$this->terminateWithSuccess([]);
+
+
+		$query_words = explode(' ', urldecode($query));
+
+		$gruppen_result = $this->_ci->GruppeModel->search($query_words);
+
+		if (isError($gruppen_result))
+			$this->terminateWithError(getError($gruppen_result), self::ERROR_TYPE_GENERAL);
+
+		$gruppen_array = array();
+
+		if (hasData($gruppen_result))
+			$gruppen_array = getData($gruppen_result);
+
+		$lehrverband_result = $this->_ci->LehrverbandModel->search($query_words);
+
+		$lehrverband_array = array();
+
+		if (isError($lehrverband_result))
+			$this->terminateWithError(getError($lehrverband_result), self::ERROR_TYPE_GENERAL);
+
+		if (hasData($lehrverband_result))
+			$lehrverband_array = getData($lehrverband_result);
+
+		$all_gruppen = array_merge($gruppen_array, $lehrverband_array);
+
+		$gefilterte_gruppen = array_filter($all_gruppen, function($gruppe) use ($stg_berechtigungen)
+		{
+			return in_array($gruppe->studiengang_kz, $stg_berechtigungen);
+		});
+
+		$this->terminateWithSuccess($gefilterte_gruppen);
+	}
+
+	public function getRollen()
+	{
+		$language = getUserLanguage() == 'German' ? 0 : 1;
+
+		$this->_ci->KalenderEventRolleModel->addOrder('sort');
+		$this->_ci->KalenderEventRolleModel->addSelect('rolle_kurzbz, array_to_json(bezeichnung_mehrsprachig::varchar[])->>'. $language. ' as bezeichnung');
+
+		$result = $this->_ci->KalenderEventRolleModel->load();
+
+		$this->terminateWithSuccess(hasData($result) ? getData($result) : []);
+	}
+	public function addReservierung()
+	{
+
+		$this->_ci->form_validation->set_data($_POST);
+		$this->_ci->form_validation->set_rules('titel',"titel","required");
+		$this->_ci->form_validation->set_rules('beschreibung',"beschreibung","required");
+		$this->_ci->form_validation->set_rules('ort_kurzbz[]',"ort_kurzbz","required");
+		$this->_ci->form_validation->set_rules('start_date',"start_date","required");
+		$this->_ci->form_validation->set_rules('end_date',"end_date","required");
+
+
+		if($this->_ci->form_validation->run() === FALSE)
+			$this->terminateWithValidationErrors($this->_ci->form_validation->error_array());
+
+		$titel = $this->_ci->input->post('titel', TRUE);
+		$beschreibung = $this->_ci->input->post('beschreibung', TRUE);
+		$ort_kurzbz = $this->_ci->input->post('ort_kurzbz', TRUE);
+		$start_date = $this->_ci->input->post('start_date', TRUE);
+		$end_date = $this->_ci->input->post('end_date', TRUE);
+		$teilnehmer = $this->_ci->input->post('teilnehmer', TRUE);
+		$specialGroups = $this->_ci->input->post('specialGroups', TRUE);
+		$specialFinalGroups = $this->_ci->input->post('specialFinalGroups', TRUE);
+		$groups = $this->_ci->input->post('groups', TRUE);
+
+		if ($this->_ci->permissionlib->isBerechtigt('lehre/reservierung'))
+		{
+			if (empty($teilnehmer) || !is_array($teilnehmer))
+			{
+				$teilnehmer[] = array('uid' => getAuthUID(), 'rolle' => 'organisator');
+			}
+		}
+		else
+			$teilnehmer[] = array('uid' => getAuthUID(), 'rolle' => 'organisator');
+
+
+		$result = $this->_ci->kalenderlib->addReservierung($titel, $beschreibung, $ort_kurzbz, $start_date, $end_date, $teilnehmer, $specialFinalGroups, $specialGroups, $groups);
+
+
+		if (isError($result))
+			$this->terminateWithError(getError($result));
+
+		$this->terminateWithSuccess($result);
+	}
+
+
+	public function getLektor()
+	{
+		$query = $this->input->get('query');
+
+		if (is_null($query))
+			$this->terminateWithError($this->p->t('ui', 'ungueltigeParameter'), self::ERROR_TYPE_GENERAL);
+
+		$query_words = explode(' ', $query);
+
+		$this->_ci->MitarbeiterModel->addSelect('uid, person_id, vorname, nachname');
+		$this->_ci->MitarbeiterModel->addJoin('public.tbl_benutzer', 'uid = mitarbeiter_uid');
+		$this->_ci->MitarbeiterModel->addJoin('public.tbl_person', 'person_id');
+
+		$this->_ci->MitarbeiterModel->db->where('public.tbl_benutzer.aktiv', true);
+
+		$this->_ci->MitarbeiterModel->db->group_start();
+		foreach ($query_words as $word)
+		{
+			$this->_ci->MitarbeiterModel->db->group_start();
+			$this->_ci->MitarbeiterModel->db->where('tbl_person.vorname ILIKE', "%" . $word . "%");
+			$this->_ci->MitarbeiterModel->db->or_where('tbl_person.nachname ILIKE', "%" . $word . "%");
+			$this->_ci->MitarbeiterModel->db->or_where('uid ILIKE', "%" . $word . "%");
+			$this->_ci->MitarbeiterModel->db->group_end();
+		}
+		$this->_ci->MitarbeiterModel->db->group_end();
+		$this->_ci->MitarbeiterModel->addOrder('nachname');
+		$this->_ci->MitarbeiterModel->addOrder('vorname');
+		$result = $this->_ci->MitarbeiterModel->load();
+		$this->terminateWithSuccess(hasData($result) ? getData($result) : array());
+	}
+
+}

application/controllers/api/frontend/v1/tempus/Tags.php

@@ -0,0 +1,53 @@
+<?php
+
+if (!defined('BASEPATH'))
+	exit('No direct script access allowed');
+
+class Tags extends Tag_Controller
+{
+	const BERECHTIGUNG_KURZBZ = ['admin:rw', 'assistenz:rw'];
+
+	public function __construct()
+	{
+		parent::__construct([
+			'getTag' => self::BERECHTIGUNG_KURZBZ,
+			'getTags' => self::BERECHTIGUNG_KURZBZ,
+			'getTagsByCalendar' => self::BERECHTIGUNG_KURZBZ,
+			'addTag' => self::BERECHTIGUNG_KURZBZ,
+			'updateTag' => self::BERECHTIGUNG_KURZBZ,
+			'doneTag' => self::BERECHTIGUNG_KURZBZ,
+			'deleteTag' => self::BERECHTIGUNG_KURZBZ
+		]);
+
+	$this->config->load('tempus');
+	}
+
+	public function getTag($readonly_tags = null)
+	{
+		parent::getTag($this->config->item('tempus_tags'));
+	}
+	public function getTags($tags = null)
+	{
+		parent::getTags($this->config->item('tempus_tags'));
+	}
+	public function getTagsByCalendar($eindeutige_kalender_gruppen_id = null)
+	{
+		parent::getTagsByAssignmentTypeValue('eindeutige_kalender_gruppen_id', $eindeutige_kalender_gruppen_id, $this->config->item('tempus_tags'));
+	}
+	public function addTag($withZuordnung = true, $updatable_tags = null)
+	{
+		parent::addTag(true, $this->config->item('tempus_tags'));
+	}
+	public function updateTag($updatable_tags = null)
+	{
+		parent::updateTag($this->config->item('tempus_tags'));
+	}
+	public function deleteTag($withZuordnung = true, $updatable_tags = null)
+	{
+		parent::deleteTag(true, $this->config->item('tempus_tags'));
+	}
+	public function doneTag($updatable_tags = null)
+	{
+		parent::doneTag($this->config->item('tempus_tags'));
+	}
+}

application/controllers/jobs/TempusJob.php

@@ -0,0 +1,27 @@
+<?php
+
+if (!defined("BASEPATH")) exit("No direct script access allowed");
+
+class TempusJob extends JOB_Controller
+{
+	private $_ci;
+
+	public function __construct()
+	{
+		parent::__construct();
+
+		$this->_ci =& get_instance();
+
+		$this->_ci->load->helper('hlp_sancho_helper');
+		$this->_ci->load->library('KalenderLib', ["uid" => null]);
+	}
+
+
+	public function sync()
+	{
+		$this->_ci->logInfo('Start job FHC-Core->Tempus->sync');
+		$this->_ci->kalenderlib->sync();
+		$this->_ci->logInfo('End job FHC-Core->Tempus->sync');
+	}
+
+}

application/controllers/system/MigrateKalender.php

@@ -0,0 +1,865 @@
+<?php
+/*
+ * Job zur einmaligen Migration des Stundenplans
+ *
+ * Aufruf
+ * php index.ci.php system/MigrateKalender
+ */
+
+if (! defined('BASEPATH')) exit('No direct script access allowed');
+
+class MigrateKalender extends CLI_Controller
+{
+
+	/**
+	 * Constructor
+	 */
+	public function __construct()
+	{
+		parent::__construct();
+
+		$this->load->model('ressource/Kalender_model', 'KalenderModel');
+		$this->load->model('ressource/Kalender_Lehreinheit_model', 'KalenderLehreinheitModel');
+		$this->load->model('ressource/Kalender_Ort_model', 'KalenderOrtModel');
+		$this->load->model('ressource/Stundenplandev_Kalender_model', 'SyncModel');
+		$this->load->model('ressource/Reservierung_Kalender_model', 'SyncReservierungModel');
+		$this->load->model('ressource/Kalender_Event_Teilnehmer_model', 'KalenderEventTeilnehmerModel');
+		$this->load->model('ressource/Kalender_Event_model', 'KalenderEventModel');
+		$this->load->model('organisation/Studiensemester_model', 'StudiensemesterModel');
+		$this->load->model('person/Benutzer_model', 'BenutzerModel');
+	}
+
+	/**
+	 * Everything has a beginning
+	 */
+	public function refreshTablesAndFullMigrateOfStundenplanReservierung($von, $bis = null, $studiengang_kz = null, $ort_kurzbz = null)
+	{
+		echo "Refreshing calendar related tables...\n";
+		$this->resetBeforeNewStundenplanReservierungImport();
+		echo "Calendar related tables refreshed successfully.\n\n";
+
+		echo "Starting full migration of Stundenplan and Reservierung from $von to " . ($bis ?? '2100-12-31') . "...\n";
+		$this->fullMigrateOfStundenplanReservierung($von, $bis, $studiengang_kz, $ort_kurzbz);
+		echo "Full migration of Stundenplan and Reservierung completed successfully.\n";
+	}
+
+	public function fullMigrateOfStundenplanReservierung($von, $bis = null, $studiengang_kz = null, $ort_kurzbz = null)
+	{
+		echo "Starting migration of Stundenplan from $von to " . ($bis ?? '2100-12-31') . "...\n";
+		$this->migrateStundenplan($von, $bis, $studiengang_kz);
+		echo "Stundenplan migration completed successfully.\n\n";
+
+		echo "Starting migration of Reservierung from $von to " . ($bis ?? '2100-12-31') . "...\n";
+		$this->migrateReservierung($von, $bis, $ort_kurzbz);
+		echo "Reservierung migration completed successfully.\n\n";
+
+		echo "Starting migration of Stundenplan Betriebsmittel entries...\n";
+		$this->migrateStundenplanBetriebsmittelEntries();
+		echo "Stundenplan Betriebsmittel entries migration completed successfully.\n\n";
+
+		echo "Starting to add title values as tags to calendar entries...\n";
+		$this->addTitleValuesAsTagsToKalenderEntries();
+		echo "Adding title values as tags to calendar entries completed successfully.\n\n";
+	}
+
+	public function migrateStundenplan($von, $bis = null, $studiengang_kz = null)
+	{
+		if (is_null($von))
+			return error('Parameter "von" ist erforderlich');
+
+		if (is_null($bis))
+			$bis = '2100-12-31';
+
+		$db = new DB_Model();
+
+		$stpldevsql = '
+			WITH eindeutige_stunden AS (
+				SELECT DISTINCT unr, datum, stunde
+				FROM lehre.tbl_stundenplandev
+				WHERE datum >= ? AND datum <= ?';
+
+		$params = [$von, $bis];
+
+		if (!is_null($studiengang_kz))
+		{
+			$stpldevsql .= ' AND studiengang_kz = ?';
+
+			$params[] = $studiengang_kz;
+		}
+
+		$stpldevsql .= '),
+			
+			block_keys AS (
+				SELECT
+					unr,
+					datum,
+					stunde,
+					stunde - ROW_NUMBER() OVER (PARTITION BY unr, datum ORDER BY stunde) AS block_nr
+				FROM eindeutige_stunden
+			),
+			blocks AS (
+				SELECT
+					bk.unr,
+					bk.datum,
+					bk.block_nr,
+					MIN(bk.stunde) AS stunde_von,
+					MAX(bk.stunde) AS stunde_bis,
+					array_agg(DISTINCT sp.lehreinheit_id) AS lehreinheit_id,
+					array_agg(DISTINCT sp.ort_kurzbz) AS ort_kurzbz,
+					array_agg(sp.stundenplandev_id ORDER BY bk.stunde) AS stundenplandev_ids,
+					MIN(sp.insertamum) AS insertamum,
+					(array_agg(sp.insertvon ORDER BY sp.insertamum ASC))[1] AS insertvon,
+					MAX(sp.updateamum) AS updateamum,
+					(array_agg(sp.updatevon ORDER BY sp.updateamum DESC))[1] AS updatevon
+				FROM block_keys bk JOIN lehre.tbl_stundenplandev sp ON sp.unr = bk.unr AND sp.datum = bk.datum AND sp.stunde = bk.stunde
+				WHERE sp.datum >= ? AND sp.datum <= ?
+				GROUP BY bk.unr, bk.datum, bk.block_nr
+			)
+			SELECT
+				b.stundenplandev_ids,
+				b.unr,
+				b.datum,
+				b.block_nr,
+				b.lehreinheit_id,
+				b.ort_kurzbz,
+				b.datum + stundevon.beginn AS von,
+				b.datum + stundebis.ende AS bis,
+				b.insertamum,
+				b.insertvon,
+				b.updateamum,
+				b.updatevon
+			FROM blocks b
+				JOIN lehre.tbl_stunde stundevon ON stundevon.stunde = b.stunde_von
+				JOIN lehre.tbl_stunde stundebis ON stundebis.stunde = b.stunde_bis
+			ORDER BY b.datum, b.unr, b.block_nr;';
+
+		array_push($params, $von, $bis);
+		$stpldev = $db->execReadOnlyQuery($stpldevsql, $params);
+
+		if (hasData($stpldev))
+		{
+			// Pruefen ob der Eintrag schon in Sync Tabelle vorhanden ist
+			// Wenn neuere Änderungen vorhanden dann Update
+			// Wenn keine Änderungen seit leztem Sync dann Ueberspringen
+			// Wenn noch nicht vorhanden neu anlegen
+			// Danach ggf pruefen welceh Eintraege in der zwischenzeit geloescht wurden und
+			// in der neuen Tabelle auch archivieren oder loeschen
+
+			$data = getData($stpldev);
+			foreach($data as $block)
+			{
+				$ids = is_array($block->stundenplandev_ids) ? $block->stundenplandev_ids : explode(',', $block->stundenplandev_ids);
+				/*$ids = array_map('intval', $ids);*/
+
+				$this->SyncModel->db->where_in('stundenplandev_id', $ids);
+				$sync_result = $this->SyncModel->load();
+
+				if (!hasData($sync_result))
+				{
+					$kalender_id = $this->_insertKalender($block, 'lehreinheit');
+					if ($kalender_id)
+					{
+						$this->_insertSync($block->stundenplandev_ids, $kalender_id);
+					}
+				}
+				else
+				{
+					$syncData = getData($sync_result);
+					$kalender_id = $syncData[0]->kalender_id;
+					$last_sync = $syncData[0]->lastupdate;
+					$synced_ids = array_column($syncData, 'stundenplandev_id');
+
+					if ($block->updateamum > $last_sync)
+					{
+						$this->_updateKalender($kalender_id, $block);
+						$this->_updateSync($synced_ids, $kalender_id);
+					}
+
+					$fehlende = array_diff($block->stundenplandev_ids, $synced_ids);
+					if (!empty($fehlende))
+					{
+						$this->_insertSync($fehlende, $kalender_id);
+					}
+				}
+			}
+		}
+	}
+
+	public function migrateReservierung($von, $bis = null, $ort_kurzbz = null)
+	{
+		if (is_null($von))
+			return error('Parameter "von" ist erforderlich');
+
+		if (is_null($bis))
+			$bis = '2100-12-31';
+
+		$db = new DB_Model();
+
+		$qry = "WITH eindeutige_stunden AS (
+					SELECT DISTINCT titel, beschreibung, datum, stunde
+					FROM campus.tbl_reservierung
+					WHERE datum >= ? AND datum <= ?";
+
+		$params = array($von, $bis);
+
+		if (!is_null($ort_kurzbz))
+		{
+			$qry .= " AND ort_kurzbz = ?";
+			$params[] = $ort_kurzbz;
+		}
+
+		$qry .=	"),
+					block_keys AS (
+						SELECT
+							titel, beschreibung, datum, stunde,
+							stunde - ROW_NUMBER() OVER (PARTITION BY titel, beschreibung, datum ORDER BY stunde) AS block_nr
+						FROM eindeutige_stunden
+					),
+					blocks AS (
+						 SELECT
+							bk.titel,
+							bk.beschreibung,
+							bk.datum,
+							bk.block_nr,
+							MIN(bk.stunde) AS stunde_von,
+							MAX(bk.stunde) AS stunde_bis,
+							array_agg(DISTINCT r.reservierung_id::text) AS reservierung_ids,
+							array_agg(DISTINCT r.uid) AS uids,
+							array_agg(DISTINCT r.gruppe_kurzbz) AS gruppen_kurzbz,
+							array_agg(DISTINCT ROW(r.semester, r.verband, r.gruppe, r.studiengang_kz)::text) AS svg_kombis,
+							array_agg(DISTINCT r.ort_kurzbz) AS ort_kurzbz,
+							MIN(r.studiengang_kz) AS studiengang_kz,
+							MIN(r.reservierung_id) AS reservierung_id,
+							MAX(r.insertamum) AS insertamum,
+							(array_agg(r.insertvon ORDER BY r.insertamum ASC))[1] AS insertvon
+						FROM block_keys bk
+							JOIN campus.tbl_reservierung r
+									ON r.titel = bk.titel AND r.beschreibung = bk.beschreibung AND r.datum = bk.datum AND r.stunde = bk.stunde
+						WHERE r.datum >= ? AND r.datum <= ?
+						GROUP BY bk.titel, bk.beschreibung, bk.datum, bk.block_nr
+					)
+				SELECT
+					b.*,
+					(b.datum + s_von.beginn) AS von,
+					(b.datum + s_bis.ende) AS bis
+				FROM blocks b
+						JOIN lehre.tbl_stunde s_von ON s_von.stunde = b.stunde_von
+						JOIN lehre.tbl_stunde s_bis ON s_bis.stunde = b.stunde_bis
+				ORDER BY b.reservierung_id DESC;";
+
+		array_push($params, $von, $bis);
+		$reservierung_data = $db->execReadOnlyQuery($qry, $params);
+
+
+		if (hasData($reservierung_data))
+		{
+			$data = getData($reservierung_data);
+
+			foreach($data as $block)
+			{
+
+				$ids = is_array($block->reservierung_ids) ? $block->reservierung_ids : explode(',', $block->reservierung_ids);
+
+				$this->SyncReservierungModel->db->where_in('reservierung_id', $ids);
+				$sync_result = $this->SyncReservierungModel->load();
+
+				if (!hasData($sync_result))
+				{
+					$kalender_id = $this->_insertKalender($block, 'reservierung');
+					if ($kalender_id)
+					{
+						$this->_insertReservierungSync($block->reservierung_ids, $kalender_id);
+					}
+				}
+				else
+				{
+					$syncData = getData($sync_result);
+					$kalender_id = $syncData[0]->kalender_id;
+					$last_sync = $syncData[0]->lastupdate;
+					$synced_ids = array_column($syncData, 'reservierung_id');
+
+					if ($block->insertamum > $last_sync)
+					{
+						$this->_updateKalender($kalender_id, $block);
+						$this->_updateReservierungSync($synced_ids, $kalender_id);
+					}
+
+					$fehlende = array_diff($block->reservierung_ids, $synced_ids);
+					if (!empty($fehlende))
+					{
+						$this->_insertReservierungSync($fehlende, $kalender_id);
+					}
+				}
+			}
+		}
+	}
+
+	/**
+	 * Removes calendar entries created by the Stundenplan and Reservierung migrations,
+	 * so that both imports can be started from scratch.
+	 */
+	public function resetBeforeNewStundenplanReservierungImport()
+	{
+		
+		$db = new DB_Model();
+
+		$db->db->trans_start();
+
+		$db->db->query('DELETE FROM sync.tbl_stundenplandev_kalender');
+		$db->db->query('DELETE FROM sync.tbl_reservierung_kalender');
+
+		$db->db->query("DELETE FROM lehre.tbl_kalender_event_teilnehmer
+			WHERE kalender_id IN (
+				SELECT kalender_id
+				FROM lehre.tbl_kalender
+				WHERE typ = 'reservierung'
+			)");
+
+		$db->db->query("DELETE FROM lehre.tbl_kalender_event
+			WHERE kalender_id IN (
+				SELECT kalender_id
+				FROM lehre.tbl_kalender
+				WHERE typ = 'reservierung'
+			)");
+
+		$db->db->query("DELETE FROM lehre.tbl_kalender_lehreinheit
+			WHERE kalender_id IN (
+				SELECT kalender_id
+				FROM lehre.tbl_kalender
+				WHERE typ = 'lehreinheit' OR typ = 'reservierung'
+			)");
+
+		$db->db->query("DELETE FROM lehre.tbl_kalender_ort
+			WHERE kalender_id IN (
+				SELECT kalender_id
+				FROM lehre.tbl_kalender
+				WHERE typ IN ('lehreinheit', 'reservierung')
+			)");
+
+		$db->db->query("DELETE FROM public.tbl_notiz
+			WHERE notiz_id IN (
+				SELECT notiz_id
+				FROM public.tbl_notizzuordnung
+				WHERE eindeutige_kalender_gruppen_id IN (
+					SELECT eindeutige_kalender_gruppen_id
+					FROM lehre.tbl_kalender
+				)
+			)");
+
+		$db->db->query("DELETE FROM public.tbl_notizzuordnung
+			WHERE eindeutige_kalender_gruppen_id IN (
+				SELECT eindeutige_kalender_gruppen_id
+				FROM lehre.tbl_kalender
+			)");
+		
+		$db->db->query("DELETE FROM public.tbl_betriebsmittel_kalender
+			WHERE eindeutige_kalender_gruppen_id IN (
+				SELECT eindeutige_kalender_gruppen_id
+				FROM lehre.tbl_kalender
+			)");
+
+		$db->db->query("DELETE FROM lehre.tbl_kalender
+			WHERE typ IN ('lehreinheit', 'reservierung')");
+
+		$db->db->trans_complete();
+
+		if ($db->db->trans_status() === false)
+			return error('Reset before new import failed');
+
+		return success('Migration data reset successfully');
+	}
+
+	public function migrateStundenplanBetriebsmittelEntries() {
+		$this->setKalendarEntriesGroupIDs();
+		$this->setKalendarEntriesGroupIDsForChildren();
+
+		$dbModel = new DB_Model();
+
+		$deleteOldImportedTempusEntriesQuery = "DELETE from lehre.tbl_betriebsmittel_kalender WHERE quelle != 'tempus_neu' OR quelle IS NULL;";
+		$createHelperTypeQuery = "DO $$
+			BEGIN
+				IF NOT EXISTS (
+					SELECT 1
+					FROM pg_type
+					WHERE typname = 'betriebsmittel_info'
+				) THEN
+					CREATE TYPE betriebsmittel_info AS (
+						betriebsmittel_id bigint,
+						insertamum timestamp,
+						insertvon text
+					);
+				END IF;
+			END $$;";
+		
+		$query = $deleteOldImportedTempusEntriesQuery . 
+				 $createHelperTypeQuery .
+		"WITH test AS (
+			SELECT 
+				tk.eindeutige_kalender_gruppen_id AS eindeutige_kalender_gruppen_id,
+				array_agg(tk.kalender_id),
+				array_agg(
+					ROW(tsb.betriebsmittel_id, tsb.insertamum, tsb.insertvon)::betriebsmittel_info
+				) AS betriebsmittel_data
+			FROM sync.tbl_stundenplandev_kalender AS sk
+			JOIN lehre.tbl_kalender tk ON tk.kalender_id = sk.kalender_id
+			JOIN lehre.tbl_stundenplan_betriebsmittel tsb ON tsb.stundenplandev_id = sk.stundenplandev_id 
+			GROUP BY tk.eindeutige_kalender_gruppen_id 
+			)
+			INSERT INTO lehre.tbl_betriebsmittel_kalender (
+				eindeutige_kalender_gruppen_id, 
+				betriebsmittel_id,
+				insertamum,
+				insertvon
+				)
+			SELECT
+				t.eindeutige_kalender_gruppen_id,
+				bm.betriebsmittel_id,
+				bm.insertamum,
+				bm.insertvon
+			FROM test t
+			CROSS JOIN LATERAL unnest(t.betriebsmittel_data) AS bm
+			ON CONFLICT (eindeutige_kalender_gruppen_id, betriebsmittel_id) DO NOTHING;
+			;";
+
+		$dbModel->db->query($query);
+	}
+
+	public function addTitleValuesAsTagsToKalenderEntries() {
+		$dbModel = new DB_Model();
+
+		
+		$query = "SELECT 
+				k.eindeutige_kalender_gruppen_id,
+				ARRAY_AGG(DISTINCT(spd.titel) ORDER BY spd.titel) AS titel,
+				MAX(spd.updateamum) AS updateamum
+			FROM lehre.tbl_stundenplandev spd
+			JOIN sync.tbl_stundenplandev_kalender spdk ON spd.stundenplandev_id = spdk.stundenplandev_id
+			JOIN lehre.tbl_kalender k ON k.kalender_id = spdk.kalender_id
+			WHERE k.typ = 'lehreinheit' AND k.eindeutige_kalender_gruppen_id IS NOT NULL AND spd.titel IS NOT NULL
+			GROUP BY k.eindeutige_kalender_gruppen_id";
+
+		$result = $dbModel->execReadOnlyQuery($query);
+
+		if (isError($result)) {
+			error("Error while fetching title values for adding as tags: " . getError($result));
+			return;
+		}
+		if (!hasData($result)) {
+			error("No title values found for adding as tags.");
+			return;
+		}
+
+		$data = getData($result);
+
+		foreach($data as $block) {
+			$eindeutige_kalender_gruppen_id = $block->eindeutige_kalender_gruppen_id;
+			$notizText = implode(' - ', array_filter($block->titel, function($titel) {
+				return !empty(trim($titel));
+			}));
+
+			if (!empty($notizText)) {
+				$this->addTag($eindeutige_kalender_gruppen_id, $notizText, $block->updateamum);
+			}
+		}
+	}
+
+	private function setKalendarEntriesGroupIDs() {
+		$dbModel = new DB_Model();
+
+		$query = "UPDATE lehre.tbl_kalender
+			SET eindeutige_kalender_gruppen_id = gen_random_uuid()
+			WHERE vorgaenger_kalender_id IS NULL
+			AND eindeutige_kalender_gruppen_id IS NULL;";
+
+		$dbModel->db->query($query);
+
+	}
+
+	private function setKalendarEntriesGroupIDsForChildren() {
+		$dbModel = new DB_Model();
+
+		$query = "WITH RECURSIVE tree AS 
+			(
+				SELECT
+					kalender_id,
+					vorgaenger_kalender_id,
+					kalender_id AS root_id,
+					eindeutige_kalender_gruppen_id as root_eindeutige_kalender_gruppen_id
+				FROM lehre.tbl_kalender
+				WHERE vorgaenger_kalender_id IS NULL
+
+				UNION ALL
+
+				SELECT
+					i.kalender_id,
+					i.vorgaenger_kalender_id,
+					t.root_id,
+					t.root_eindeutige_kalender_gruppen_id 
+				FROM lehre.tbl_kalender i
+				JOIN tree t
+				ON i.vorgaenger_kalender_id = t.kalender_id
+				where i.eindeutige_kalender_gruppen_id is NULL
+			
+			)
+			UPDATE lehre.tbl_kalender k
+			SET eindeutige_kalender_gruppen_id = t.root_eindeutige_kalender_gruppen_id
+			FROM tree t
+			WHERE k.kalender_id = t.kalender_id
+			AND k.eindeutige_kalender_gruppen_id IS NULL;";
+
+		$dbModel->db->query($query);
+	}
+	
+	private function _insertKalender($block, $typ)
+	{
+		$result = $this->KalenderModel->insert(
+			array (
+				'von' => $block->von,
+				'bis' => $block->bis,
+				'typ' => $typ,
+				'status_kurzbz'=> 'live',
+				'insertamum' => $block->insertamum,
+				'insertvon' => $block->insertvon,
+				'updateamum' => $block->updateamum ?? null,
+				'updatevon' => $block->updatevon ?? null
+			)
+		);
+		if(!isSuccess($result))
+			return null;
+
+		$kalender_id = getData($result);
+
+		if ($typ === 'lehreinheit')
+		{
+			$lehreinheit_ids = is_array($block->lehreinheit_id) ? $block->lehreinheit_id : explode(',', $block->lehreinheit_id);
+			foreach ($lehreinheit_ids as $lehreinheit_id)
+			{
+				$leResult = $this->KalenderLehreinheitModel->insert(
+					array (
+						'kalender_id' => $kalender_id,
+						'lehreinheit_id'=> $lehreinheit_id
+					)
+				);
+
+				if (!isSuccess($leResult))
+					return null;
+			}
+		}
+		else if ($typ === 'reservierung')
+		{
+			$eventResult = $this->KalenderEventModel->insert(array(
+				'kalender_id' => $kalender_id,
+				'titel' => $block->titel,
+				'beschreibung' => $block->beschreibung
+			));
+
+			if (!isSuccess($eventResult))
+				return null;
+
+			if ($block->insertvon)
+			{
+				$user = $this->BenutzerModel->load(array('uid' => $block->insertvon));
+
+				if (hasData($user))
+				{
+					$this->KalenderEventTeilnehmerModel->insert(array(
+						'kalender_id' => $kalender_id,
+						'uid' => getData($user)[0]->uid,
+						'rolle_kurzbz' => 'organisator'
+					));
+				}
+			}
+
+			$uids = is_array($block->uids) ? $block->uids : explode(',', $block->uids);
+			foreach ($uids as $uid)
+			{
+				$this->KalenderEventTeilnehmerModel->insert(array(
+					'kalender_id' => $kalender_id,
+					'uid' => $uid,
+					'rolle_kurzbz' => 'teilnehmer'
+				));
+			}
+
+			$semester_range = $this->StudiensemesterModel->getByDateRange($block->von, $block->bis);
+
+			if (isError($semester_range))
+				return null;
+
+			$studiensemester_kurzbz = getData($semester_range)[0]->studiensemester_kurzbz ?? null;
+
+			$gruppen = is_array($block->gruppen_kurzbz) ? $block->gruppen_kurzbz : explode(',', $block->gruppen_kurzbz ?? '');
+
+			foreach ($gruppen as $gruppe_kurzbz)
+			{
+				$gruppe_kurzbz = trim($gruppe_kurzbz);
+				if (!empty($gruppe_kurzbz))
+				{
+					$this->KalenderEventTeilnehmerModel->insert(array(
+						'kalender_id' => $kalender_id,
+						'gruppe_kurzbz' => $gruppe_kurzbz,
+						'studiengang_kz' => $block->studiengang_kz,
+						'studiensemester_kurzbz' => $studiensemester_kurzbz,
+						'rolle_kurzbz' => 'teilnehmer'
+					));
+				}
+			}
+
+			foreach ($block->svg_kombis as $kombi_str)
+			{
+				$kombi_str = trim($kombi_str, '()');
+				list($sem, $verb, $grp, $stg_kz) = explode(',', $kombi_str);
+
+				$sem = trim($sem) === '' ? null : trim($sem);
+				$verb = trim($verb) === '' ? null : trim($verb);
+				$grp = trim($grp) === '' ? null : trim($grp);
+				$stg_kz = trim($stg_kz) === '' ? null : trim($stg_kz);
+
+				if (is_null($sem) && is_null($verb) && is_null($grp) && is_null($stg_kz))
+					continue;
+
+				$this->KalenderEventTeilnehmerModel->insert(array(
+					'kalender_id' => $kalender_id,
+					'studiengang_kz' => $stg_kz,
+					'semester' => $sem,
+					'verband' => $verb,
+					'gruppe' => $grp,
+					'studiensemester_kurzbz' => $studiensemester_kurzbz,
+					'rolle_kurzbz' => 'teilnehmer'
+				));
+			}
+		}
+
+		$orte = is_array($block->ort_kurzbz) ? $block->ort_kurzbz : explode(',', $block->ort_kurzbz ?? '');
+
+		foreach ($orte as $ort)
+		{
+			$ort = trim($ort);
+			if (!empty($ort))
+			{
+				$this->KalenderOrtModel->insert(
+					array (
+						'kalender_id' => $kalender_id,
+						'ort_kurzbz' => $ort
+					)
+				);
+			}
+		}
+
+		return $kalender_id;
+	}
+
+	private function _insertSync($ids, $kalender_id)
+	{
+		foreach($ids as $id)
+		{
+			$this->SyncModel->insert(
+				array (
+					'stundenplandev_id' => $id,
+					'kalender_id' => $kalender_id,
+					'lastupdate' => date('Y-m-d H:i:s')
+				)
+			);
+		}
+	}
+	private function _insertReservierungSync($ids, $kalender_id)
+	{
+
+		foreach($ids as $id)
+		{
+			$this->SyncReservierungModel->insert(
+				array (
+					'reservierung_id' => $id,
+					'kalender_id' => $kalender_id,
+					'lastupdate' => date('Y-m-d H:i:s')
+				)
+			);
+		}
+	}
+
+	private function _updateKalender($kalender_id, $block)
+	{
+		$this->KalenderModel->update(
+			array (
+				'kalender_id' => $kalender_id
+			),
+			array (
+				'von' => $block->von,
+				'bis' => $block->bis,
+				'updateamum'=> $block->updateamum,
+				'updatevon' => $block->updatevon
+			)
+		);
+
+		$orte = is_array($block->ort_kurzbz) ? $block->ort_kurzbz : explode(',', $block->ort_kurzbz ?? '');
+		$orte = array_filter(array_map('trim', $orte));
+
+		$this->KalenderOrtModel->delete(array('kalender_id' => $kalender_id));
+
+		foreach ($orte as $ort)
+		{
+			$this->KalenderOrtModel->insert(
+				array (
+					'kalender_id' => $kalender_id,
+					'ort_kurzbz' => $ort
+				)
+			);
+		}
+	}
+
+	private function _updateSync($ids, $kalender_id)
+	{
+		foreach($ids as $id)
+		{
+			$this->SyncModel->update(
+				array (
+					'stundenplandev_id' => $id,
+					'kalender_id' => $kalender_id
+				),
+				array (
+					'lastupdate' => date('Y-m-d H:i:s')
+				)
+			);
+		}
+	}
+
+	private function _updateReservierungSync($ids, $kalender_id)
+	{
+		foreach($ids as $id)
+		{
+			$this->SyncReservierungModel->update(
+				array (
+					'reservierung_id' => $id,
+					'kalender_id' => $kalender_id
+				),
+				array (
+					'lastupdate' => date('Y-m-d H:i:s')
+				)
+			);
+		}
+	}
+
+	private function addTag($eindeutige_kalender_gruppen_id, $notizText, $lastUpdatedInOldSystem): bool
+	{
+		$notizType = 'hinweis';
+		$insertvonMockUser = 'oldToNewTempusMigration';
+		
+		if (is_null($eindeutige_kalender_gruppen_id) || empty($eindeutige_kalender_gruppen_id)) {
+			var_dump("Error: eindeutige_kalender_gruppen_id is null or empty.");
+			return false;
+		}
+
+		$this->load->model('person/Notiz_model', 'NotizModel');
+		$this->load->model('system/Notiztyp_model', 'NotiztypModel');
+		$this->load->model('person/Notizzuordnung_model', 'NotizzuordnungModel');
+
+		$checkTyp = $this->NotiztypModel->loadWhere(array('typ_kurzbz' => $notizType));
+
+		if (isError($checkTyp))
+		{
+			error("Error occurred while checking Notiztyp: " . $checkTyp->message);
+			return false;
+		}
+
+		if (!hasData($checkTyp))
+		{
+			error("Notiztyp 'hinweis' does not exist. Please create it before adding tags.");
+			return false;
+		}
+		 
+
+		$this->NotizzuordnungModel->addJoin('tbl_notiz', 'tbl_notiz.notiz_id = tbl_notizzuordnung.notiz_id', 'LEFT');
+		$this->NotizzuordnungModel->db->where('tbl_notiz.typ', $notizType);
+		$this->NotizzuordnungModel->db->where('tbl_notiz.insertvon', $insertvonMockUser);
+		$oldNotizZuordnung = $this->NotizzuordnungModel->loadWhere(array('eindeutige_kalender_gruppen_id' => $eindeutige_kalender_gruppen_id));
+		if (isError($oldNotizZuordnung))
+		{
+			error("Error occurred while checking Notizzuordnung: " . $oldNotizZuordnung->message);
+			return false;
+		}
+		if (hasData($oldNotizZuordnung))
+		{
+			return $this->updateTag($eindeutige_kalender_gruppen_id, $notizText, $lastUpdatedInOldSystem);
+		}
+
+		
+		$insertResult = $this->NotizModel->insert(array(
+			'titel' => 'TAG',
+			'text' => $notizText,
+			'verfasser_uid' => null,
+			'erledigt' => false,
+			'insertamum' => date('Y-m-d H:i:s'),
+			'insertvon' => $insertvonMockUser,
+			'typ' => $notizType
+		));
+
+		if (isError($insertResult))
+		{
+			error("Error occurred while inserting Notiz: " . $insertResult->message);
+			return false;
+		}
+
+		$insertZuordnung = $this->NotizzuordnungModel->insert(array(
+			'notiz_id' => $insertResult->retval,
+			'eindeutige_kalender_gruppen_id' => $eindeutige_kalender_gruppen_id
+		));
+
+		if (isError($insertZuordnung)) 
+		{
+			error("Error occurred while inserting Notizzuordnung: " . $insertZuordnung->message);
+			return false;
+		}
+
+		return true;
+	}
+
+	private function updateTag($eindeutige_kalender_gruppen_id, $notizText, $lastUpdatedInOldSystem)
+	{
+		$notizType = 'hinweis';
+		$insertvonMockUser = 'oldToNewTempusMigration';
+		
+		$this->NotizzuordnungModel->addJoin('tbl_notiz', 'tbl_notiz.notiz_id = tbl_notizzuordnung.notiz_id', 'LEFT');
+		$this->NotizzuordnungModel->db->where('tbl_notiz.typ', $notizType);
+		$this->NotizzuordnungModel->db->where('tbl_notiz.insertvon', $insertvonMockUser);
+		$notizZuordnungRes = $this->NotizzuordnungModel->loadWhere(array('eindeutige_kalender_gruppen_id' => $eindeutige_kalender_gruppen_id));
+		if (isError($notizZuordnungRes))
+		{
+			error("Error occurred while loading Notizzuordnung: " . $notizZuordnungRes->message);
+			return false;
+		}
+
+
+		$tag = $this->NotizModel->loadWhere(array('notiz_id' => $notizZuordnungRes->retval[0]->notiz_id));
+		if (isError($tag))
+		{
+			error("Error occurred while loading Notiz: " . $tag->message);
+			return false;
+		}
+
+		if (!hasData($tag))
+		{
+			error("Error occurred while loading Notiz: " . $tag->message);
+			return false;
+		}
+
+		$adjustedLastUpdatedInOldSystem = date('Y-m-d H:i:s', strtotime($lastUpdatedInOldSystem) + 5);
+		if ($tag->retval[0]->updateamum >= $adjustedLastUpdatedInOldSystem)
+		{
+			return true;
+		}
+
+		$updateData = $this->NotizModel->update(array('notiz_id' => $tag->retval[0]->notiz_id),
+			array('text' => $notizText,
+				'updateamum' => date('Y-m-d H:i:s'),
+				'updatevon' => $insertvonMockUser,
+				'bearbeiter_uid' => null,
+			)
+		);
+		if (isError($updateData))
+		{
+			error("Error occurred while updating Notiz: " . $updateData->message);
+			return false;
+		}
+
+		return true;
+	}
+}

application/core/ICollisionCheck.php

@@ -0,0 +1,10 @@
+<?php
+interface ICollisionCheck
+{
+	public function getName();
+
+	public function check($data);
+
+	public function checkAll($kalender_ids);
+
+}

application/core/Tag_Controller.php

@@ -38,6 +38,8 @@ class Tag_Controller extends FHCAPI_Controller
 	public function getTag($readonly_tags = null)
 	{
 		$language = $this->_getLanguageIndex();
+		$index_bezeichnung_mehrsprachig = $language - 1;
+		
 		$id = $this->input->get('id');
 
 		if (is_array($readonly_tags) && !isEmptyArray($readonly_tags))
@@ -62,7 +64,7 @@ class Tag_Controller extends FHCAPI_Controller
 		$this->NotizModel->addSelect(
 			"tbl_notiz.titel, 
 			tbl_notiz.text, 
-			array_to_json(bezeichnung_mehrsprachig::varchar[])->>". $language. " as bezeichnung,
+			array_to_json(bezeichnung_mehrsprachig::varchar[])->>". $index_bezeichnung_mehrsprachig. " as bezeichnung,
 			tbl_notiz.notiz_id,
 			tbl_notiz_typ.style,
 			tbl_notiz.erledigt as done,
@@ -87,9 +89,12 @@ class Tag_Controller extends FHCAPI_Controller
 
 	public function getTags($tags = null)
 	{
+		$language = $this->_getLanguageIndex();
+		$index_bezeichnung_mehrsprachig = $language - 1;
+
 		$this->NotiztypModel->addSelect(
 			'typ_kurzbz as tag_typ_kurzbz,
-			array_to_json(bezeichnung_mehrsprachig::varchar[])->>0 as bezeichnung,
+			array_to_json(bezeichnung_mehrsprachig::varchar[])->>'. $index_bezeichnung_mehrsprachig. ' as bezeichnung,
 			style,
 			beschreibung,
 			tag
@@ -106,7 +111,36 @@ class Tag_Controller extends FHCAPI_Controller
 		$notiztypen = $this->NotiztypModel->loadWhere(array('aktiv' => true));
 		$this->terminateWithSuccess(hasData($notiztypen) ? getData($notiztypen) : array());
 	}
+	public function getTagsByAssignmentTypeValue($zuordnung_typ, $zuordnung_id, $tags = null)
+	{
+		$language = $this->_getLanguageIndex();
+		$index_bezeichnung_mehrsprachig = $language - 1;
 
+		$this->NotizzuordnungModel->addSelect(
+			'tbl_notizzuordnung.notiz_id as notiz_id,
+			typ_kurzbz as tag_typ_kurzbz,
+			array_to_json(bezeichnung_mehrsprachig::varchar[])->>'. $index_bezeichnung_mehrsprachig. ' as bezeichnung,
+			style,
+			beschreibung,
+			tag,
+			tbl_notiz.erledigt as done
+			'
+		);
+		
+		if (is_array($tags) && !isEmptyArray($tags))
+		{
+			$tags = $this->_filterTag($tags, false);
+			$this->NotizzuordnungModel->db->where_in('tbl_notiz_typ.typ_kurzbz', $tags);
+		}
+
+		$this->NotizzuordnungModel->addJoin('public.tbl_notiz', 'public.tbl_notizzuordnung.notiz_id = public.tbl_notiz.notiz_id');
+		$this->NotizzuordnungModel->addJoin('public.tbl_notiz_typ', 'public.tbl_notiz.typ = public.tbl_notiz_typ.typ_kurzbz');
+
+		$this->NotizzuordnungModel->addOrder('prioritaet');
+
+		$notiztypen = $this->NotizzuordnungModel->loadWhere(array('aktiv' => true, $zuordnung_typ => $zuordnung_id));
+		$this->terminateWithSuccess(hasData($notiztypen) ? getData($notiztypen) : array());
+	}
 	public function addTag($withZuordnung = true, $updatable_tags = null)
 	{
 		$postData = $this->getPostJson();
@@ -126,7 +160,7 @@ class Tag_Controller extends FHCAPI_Controller
 			if (!in_array($postData->tag_typ_kurzbz, $tags))
 				$this->terminateWithError($this->p->t('ui', 'keineBerechtigung'));
 		}
-
+		
 		if ($withZuordnung)
 		{
 			$return = array();
@@ -135,7 +169,7 @@ class Tag_Controller extends FHCAPI_Controller
 				$this->terminateWithError('Error occurred', self::ERROR_TYPE_GENERAL);
 
 			$values = array_unique($postData->values);
-
+			
 			foreach ($values as $value)
 			{
 				$insertResult = $this->addNotiz($postData);

application/helpers/hlp_common_helper.php

@@ -570,3 +570,13 @@ function buildDropdownEntryPrintArray($id, $name, $parameterurl, $uid=null, $ord
 		];
 
 }
+
+function generateUUID()
+{
+	$data = openssl_random_pseudo_bytes(16);
+
+	$data[6] = chr(ord($data[6]) & 0x0f | 0x40);
+	$data[8] = chr(ord($data[8]) & 0x3f | 0x80);
+
+	return vsprintf('%s%s-%s-%s-%s-%s%s%s', str_split(bin2hex($data), 4));
+}

application/libraries/CollisionChecker.php

@@ -0,0 +1,74 @@
+<?php
+
+defined('BASEPATH') || exit('No direct script access allowed');
+
+use CI3_Events as Events;
+
+class CollisionChecker
+{
+	private $_checks = [];
+
+	private $_ci;
+	private $_uid;
+
+	public function __construct($params)
+	{
+		$this->_ci =& get_instance();
+
+		if (isset($params['uid']) && !isEmptyString($params['uid'])){
+			$this->_uid = $params['uid'];
+		} else {
+			show_error('uid of logged user not passed!');
+		}
+
+		$this->_ci->load->library('collision/checks/RoomCollisionCheck', ['uid' => $this->_uid]);
+		$this->_ci->load->library('collision/checks/LectureCollisionCheck', ['uid' => $this->_uid]);
+		$this->_ci->load->library('collision/checks/VerbandCollisionCheck', ['uid' => $this->_uid]);
+		$this->_ci->load->library('collision/checks/StudentCollisionCheck', ['uid' => $this->_uid]);
+		$this->_ci->load->library('collision/checks/ResourcesCollisionCheck', ['uid' => $this->_uid]);
+		$this->register($this->_ci->roomcollisioncheck);
+		$this->register($this->_ci->lecturecollisioncheck);
+		$this->register($this->_ci->verbandcollisioncheck);
+		$this->register($this->_ci->studentcollisioncheck);
+		$this->register($this->_ci->resourcescollisioncheck);
+		Events::trigger('collision_register', $this);
+	}
+
+	public function register(ICollisionCheck $check)
+	{
+		$this->_checks[$check->getName()] = $check;
+	}
+
+	public function run($data)
+	{
+		$errors = [];
+
+		foreach ($this->_checks as $check)
+		{
+			$result = $check->check($data);
+
+			if (!empty($result))
+			{
+				$errors = array_merge($errors, $result);
+			}
+		}
+
+		return $errors;
+	}
+
+	public function runAll($kalender_ids)
+	{
+		$results = array_fill_keys($kalender_ids, []);
+
+		foreach ($this->_checks as $check)
+		{
+			$batchResult = $check->checkAll($kalender_ids);
+			foreach ($batchResult as $kalender_id => $errors)
+			{
+				$results[$kalender_id] = array_merge($results[$kalender_id], $errors);
+			}
+		}
+
+		return $results;
+	}
+}

application/libraries/KalenderNotificationLib.php

@@ -0,0 +1,170 @@
+<?php
+
+if (! defined("BASEPATH")) exit("No direct script access allowed");
+
+class KalenderNotificationLib
+{
+	private $_ci;
+	public function __construct()
+	{
+		$this->_ci =& get_instance();
+		$this->_ci->load->library('MailLib');
+		$this->_ci->load->config('tempus');
+
+	}
+
+	public function sendMails($mail_infos)
+	{
+		if (!$this->_ci->config->item('send_update_mails'))
+			return true;
+
+		$lektor_added = array();
+		$lektor_changed = array();
+		$lektor_deleted = array();
+
+		$student_added = array();
+		$student_changed = array();
+		$student_deleted = array();
+
+		foreach ($mail_infos as $info)
+		{
+			$entry = $info['entry'];
+			$new_status = $info['new_status'];
+			$notify = $info['notify'];
+
+			$old_entry = null;
+			if ($entry->vorgaenger_kalender_id)
+			{
+				$this->_ci->KalenderModel->addJoin('lehre.tbl_kalender_ort', 'tbl_kalender.kalender_id = tbl_kalender_ort.kalender_id', 'LEFT');
+				$vorgaenger = $this->_ci->KalenderModel->load(array('tbl_kalender.kalender_id' => $entry->vorgaenger_kalender_id));
+				if (hasData($vorgaenger))
+					$old_entry = getData($vorgaenger)[0];
+			}
+
+			if ($new_status === 'deleted')
+				$row = $this->_buildMailDeleted($entry);
+			else if ($old_entry)
+				$row = $this->_buildMailChanged($old_entry, $entry);
+			else
+				$row = $this->_buildMailNew($entry);
+
+			if (in_array('lektor', $notify))
+			{
+				if ($new_status === 'deleted')
+					$lektor_deleted[] = $row;
+				else if ($old_entry)
+					$lektor_changed[] = $row;
+				else
+					$lektor_added[] = $row;
+			}
+
+			if (in_array('student', $notify))
+			{
+				if ($new_status === 'deleted')
+					$student_deleted[] = $row;
+				else if ($old_entry)
+					$student_changed[] = $row;
+				else
+					$student_added[] = $row;
+			}
+		}
+
+		$lektor_entries = '';
+		$student_entries = '';
+
+		if (!empty($lektor_added))
+			$lektor_entries .= $this->_addToList($lektor_added, 'hinzugefügt') . '<hr/>';
+
+		if (!empty($lektor_changed))
+			$lektor_entries .= $this->_addToList($lektor_changed, 'geändert') . '<hr/>';
+
+		if (!empty($lektor_deleted))
+			$lektor_entries .= $this->_addToList($lektor_deleted, 'gelöscht') . '<hr/>';
+
+		if (!empty($student_added))
+			$student_entries .= $this->_addToList($student_added, 'hinzugefügt') . '<hr/>';
+
+		if (!empty($student_changed))
+			$student_entries .= $this->_addToList($student_changed, 'geändert') . '<hr/>';
+
+		if (!empty($student_deleted))
+			$student_entries .= $this->_addToList($student_deleted, 'gelöscht') . '<hr/>';
+
+		if (!empty($lektor_entries))
+			$this->_ci->maillib->send('', '[email protected]', 'Lektor Tempus Update', $lektor_entries);
+		if (!empty($student_entries))
+			$this->_ci->maillib->send('', '[email protected]', 'Student Tempus Update', $student_entries);
+	}
+
+	private function _addToList($entries, $status)
+	{
+		return 'Folgende Einträge wurden <b>'. $status .'</b>: <ul>' . implode('', $entries) . '</ul>';
+
+	}
+	private function _buildMailNew($entry)
+	{
+		$von = date('d.m.Y H:i', strtotime($entry->von));
+		$bis = date('H:i', strtotime($entry->bis));
+
+		return '<li>
+					<b>Kalender ID ' . ($entry->kalender_id ?? '-') . '</b>
+					<ul>
+						<li><b>Uhrzeit:</b> ' . $von . ' - ' . $bis . '</li>
+						<li><b>Ort:</b> ' . ($entry->ort_kurzbz ?? '-') . '</li>
+					</ul>
+				</li>';
+	}
+
+	private function _buildMailChanged($old_entry, $new_entry)
+	{
+		$old_von = date('d.m.Y H:i', strtotime($old_entry->von));
+		$old_bis = date('H:i', strtotime($old_entry->bis));
+		$new_von = date('d.m.Y H:i', strtotime($new_entry->von));
+		$new_bis = date('H:i', strtotime($new_entry->bis));
+
+		$old_ort = $old_entry->ort_kurzbz ?? '-';
+		$new_ort = $new_entry->ort_kurzbz ?? '-';
+
+		$uhrzeit_changed = ($old_von . $old_bis) !== ($new_von . $new_bis);
+		$ort_changed = $old_ort !== $new_ort;
+
+		$changes = '';
+
+		if ($uhrzeit_changed)
+		{
+			$changes .= '<li>
+							<b>Uhrzeit:</b>
+							<s style="color:red;">' . $old_von . ' - ' . $old_bis . '</s>
+							<span style="color:green;">' . $new_von . ' - ' . $new_bis . '</span>
+						</li>';
+		}
+
+		if ($ort_changed)
+		{
+			$changes .= '<li>
+				<b>Ort:</b>
+				<s style="color:red;">' . $old_ort . '</s>
+				<span style="color:green;">' . $new_ort . '</span>
+			</li>';
+		}
+
+		return '<li>
+					<b>Kalender ID ' . ($new_entry->kalender_id ?? '-') . '</b>
+					<ul>' . $changes . '</ul>
+				</li>';
+	}
+
+	private function _buildMailDeleted($entry)
+	{
+		$von = date('d.m.Y H:i', strtotime($entry->von));
+		$bis = date('H:i', strtotime($entry->bis));
+
+		return '<li style="color:red;">
+					<b><s>Kalender ID ' . ($entry->kalender_id ?? '-') . '</s></b>
+					<ul>
+						<li><s>' . $von . ' - ' . $bis . '</s></li>
+						<li><s>' . ($entry->ort_kurzbz ?? '-') . '</s></li>
+					</ul>
+				</li>';
+	}
+}

application/libraries/LvPlanCSVLib.php

@@ -0,0 +1,420 @@
+<?php
+
+if (!defined('BASEPATH'))
+	exit('No direct script access allowed');
+
+class LvPlanCSVLib
+{
+	const TARGET_OUTLOOK = 'outlook';
+
+	const GENERIC_HEADER = array(
+		'title',
+		'category',
+		'location',
+		'description',
+		'keywords',
+		'start_date',
+		'start_time',
+		'end_date',
+		'end_time',
+		'alarm',
+		'recur_type',
+		'recur_end_date',
+		'recur_interval',
+		'recur_data'
+	);
+
+	const OUTLOOK_HEADER = array(
+		'Betreff',
+		'Beginnt am',
+		'Beginnt um',
+		'Endet am',
+		'Endet um',
+		'Ganztaegiges Ereignis',
+		'Erinnerung Ein/Aus',
+		'Erinnerung am',
+		'Erinnerung um',
+		'Besprechungsplanung',
+		'Erforderliche Teilnehmer',
+		'Optionale Teilnehmer',
+		'Besprechungsressourcen',
+		'Abrechnungsinformationen',
+		'Beschreibung',
+		'Kategorien',
+		'Ort',
+		'Priorität',
+		'Privat',
+		'Reisekilometer',
+		'Vertraulichkeit',
+		'Zeitspanne zeigen als'
+	);
+
+	private $ci;
+
+	public function __construct()
+	{
+		$this->ci =& get_instance();
+	}
+
+	/**
+	 * Builds CSV content for a user's timetable.
+	 *
+	 * @param string $uid User UID.
+	 * @param int $begin First included date as Unix timestamp.
+	 * @param int $ende Last included date as Unix timestamp.
+	 * @param string $type Timetable type (student, lektor, ort or verband).
+	 * @param string|null $target Optional CSV target (outlook).
+	 * @param string|null $ortKurzbz Room identifier for room plans.
+	 * @param array|null $verbandFilters Lehrverband filters.
+	 * @return string
+	 */
+	public function getContent(
+		$uid,
+		$begin,
+		$ende,
+		$type,
+		$target = null,
+		$ortKurzbz = null,
+		$verbandFilters = null
+	) {
+		if (!in_array($type, array('student', 'lektor', 'ort', 'verband'), true))
+			throw new InvalidArgumentException('Unsupported timetable type');
+		if ($target !== null && $target !== self::TARGET_OUTLOOK)
+			throw new InvalidArgumentException('Unsupported CSV target');
+		if ($type === 'ort' && (!is_string($ortKurzbz) || $ortKurzbz === ''))
+			throw new InvalidArgumentException('Missing room timetable filter');
+		if ($type === 'verband'
+			&& (!is_array($verbandFilters)
+				|| !array_key_exists('stg_kz', $verbandFilters)
+				|| !array_key_exists('sem', $verbandFilters)))
+		{
+			throw new InvalidArgumentException('Missing Lehrverband timetable filters');
+		}
+
+		$isLecturer = $type === 'lektor';
+		$this->ci->load->library('KalenderLib', array('uid' => $uid));
+
+		$startDate = date('Y-m-d', $begin);
+		$endDate = date('Y-m-d', $ende);
+
+		if ($type === 'verband')
+		{
+			$events = $this->ci->kalenderlib->getPlanForVerband(
+				$startDate,
+				$endDate,
+				$verbandFilters['stg_kz'],
+				$verbandFilters['sem'],
+				isset($verbandFilters['ver']) ? $verbandFilters['ver'] : null,
+				isset($verbandFilters['grp']) ? $verbandFilters['grp'] : null
+			);
+		}
+		elseif ($type === 'ort')
+		{
+			$events = $this->ci->kalenderlib
+				->getPlanForRoom($startDate, $endDate, $ortKurzbz);
+		}
+		elseif ($isLecturer)
+		{
+			$events = $this->ci->kalenderlib
+				->getPlanForLecturerByLecturer($startDate, $endDate, $uid);
+		}
+		else
+		{
+			$events = $this->ci->kalenderlib
+				->getPlanForStudentByStudent($startDate, $endDate, $uid);
+		}
+
+		if (!is_array($events))
+			$events = array();
+
+		$content = $this->buildCSVLine(
+			$target === self::TARGET_OUTLOOK ? self::OUTLOOK_HEADER : self::GENERIC_HEADER
+		);
+
+		foreach ($events as $event)
+		{
+			$eventData = $this->getEventData($event, $type);
+			if ($eventData === null)
+				continue;
+
+			$content .= $this->buildCSVLine(
+				$target === self::TARGET_OUTLOOK
+					? $this->buildOutlookRow($eventData)
+					: $this->buildGenericRow($eventData)
+			);
+		}
+
+		return $content;
+	}
+
+	/**
+	 * @param object $event Calendar event.
+	 * @return array|null Normalized CSV values or null for invalid dates.
+	 */
+	private function getEventData($event, $type = null)
+	{
+		$start = $this->createDateTime(isset($event->isostart) ? $event->isostart : null);
+		$end = $this->createDateTime(isset($event->isoend) ? $event->isoend : null);
+
+		if ($start === null || $end === null)
+			return null;
+
+		$timezone = new DateTimeZone('Europe/Vienna');
+		$start->setTimezone($timezone);
+		$end->setTimezone($timezone);
+
+		$isReservation = isset($event->type) && $event->type === 'reservierung';
+		
+		$title = $isReservation
+			? (isset($event->titel) ? $event->titel : '')
+			: $this->joinValues(isset($event->topic) ? $event->topic : array());
+		if ($type === 'verband') {
+			$title = '';
+		}
+
+		$location = $this->joinValues(
+			isset($event->ort_kurzbz) ? $event->ort_kurzbz : array(),
+			' / '
+		);
+
+		$description = $this->getDescription(
+			$event,
+			$isReservation
+		);
+
+		return array(
+			'title' => $title,
+			'location' => $location,
+			'description' => $description,
+			'start_date' => $start->format('d.m.Y'),
+			'start_time' => $start->format('H:i:s'),
+			'end_date' => $end->format('d.m.Y'),
+			'end_time' => $end->format('H:i:s')
+		);
+	}
+
+	/**
+	 * Builds a localized event description from populated event details.
+	 *
+	 * @param object $event Calendar event.
+	 * @param bool $isReservation Whether the event is a reservation.
+	 * @param string $participants Participant abbreviations.
+	 * @param string $lecturers Lecturer abbreviations.
+	 * @param string $groups Participant group labels.
+	 * @return string Description lines separated by CRLF.
+	 */
+	private function getDescription($event, $isReservation)
+	{
+		$groups = $this->getGroups($event);
+		$lecturers = $this->getLecturers($event);
+		$participants = $this->getParticipants($event);
+
+		$parts = array();
+		if ($isReservation)
+		{
+			if ($participants !== '')
+				$parts[] = $this->ci->p->t('ui', 'teilnehmende').': '.$participants;
+		}
+		else
+		{
+			$subject = isset($event->lehrfach_bez) ? $event->lehrfach_bez : '';
+
+			if ($subject !== '')
+				$parts[] = $this->ci->p->t('global', 'lehrfach').': '.$subject;
+			if ($lecturers !== '')
+				$parts[] = $this->ci->p->t('lehre', 'lektorInnen').': '.$lecturers;
+		}
+
+		if ($groups !== '')
+			$parts[] = $this->ci->p->t('global', 'gruppen').': '.$groups;
+
+		$description = isset($event->beschreibung) ? $event->beschreibung : '';
+		if ($description !== '')
+			$parts[] = $this->ci->p->t('global', 'beschreibung').': '.$description;
+
+		return implode("\r\n", $parts);
+	}
+
+	/**
+	 * @param array $eventData Normalized event values.
+	 * @return array Generic CSV row.
+	 */
+	private function buildGenericRow(array $eventData)
+	{
+		$category = defined('LVPLAN_KATEGORIE') ? LVPLAN_KATEGORIE : 'StundenplanTW';
+
+		return array(
+			$eventData['title'],
+			$category,
+			$eventData['location'],
+			$eventData['description'],
+			'Stundenplan',
+			$eventData['start_date'],
+			$eventData['start_time'],
+			$eventData['end_date'],
+			$eventData['end_time'],
+			'',
+			'',
+			'',
+			'',
+			''
+		);
+	}
+
+	/**
+	 * @param array $eventData Normalized event values.
+	 * @return array Outlook CSV row.
+	 */
+	private function buildOutlookRow(array $eventData)
+	{
+		$subject = $eventData['title'];
+
+		return array(
+			$subject,
+			$eventData['start_date'],
+			$eventData['start_time'],
+			$eventData['end_date'],
+			$eventData['end_time'],
+			'Aus',
+			'Aus',
+			'',
+			'',
+			'',
+			'',
+			'',
+			'',
+			'',
+			$eventData['description'],
+			'StundenplanFH',
+			$eventData['location'],
+			'Normal',
+			'Aus',
+			'',
+			'Normal',
+			'2'
+		);
+	}
+
+	/**
+	 * @param object $event Calendar event.
+	 * @return string Lecturer abbreviations.
+	 */
+	private function getLecturers($event)
+	{
+		$lecturers = array();
+
+		if (isset($event->lektor) && is_array($event->lektor))
+		{
+			foreach ($event->lektor as $lecturer)
+			{
+				if (isset($lecturer['kurzbz']) && $lecturer['kurzbz'] !== '')
+					$lecturers[] = $lecturer['kurzbz'];
+			}
+		}
+
+		sort($lecturers, SORT_NATURAL | SORT_FLAG_CASE);
+		
+		return implode(' / ', array_unique($lecturers));
+	}
+
+	/**
+	 * @param object $event Calendar event.
+	 * @return string Participant group labels.
+	 */
+	private function getGroups($event)
+	{
+		$groups = array();
+
+		if (isset($event->gruppe) && is_array($event->gruppe))
+		{
+			foreach ($event->gruppe as $group)
+			{
+				if (isset($group['bezeichnung']) && $group['bezeichnung'] !== '')
+					$groups[] = $group['bezeichnung'];
+			}
+		}
+
+		if (isset($event->teilnehmer_gruppe) && is_array($event->teilnehmer_gruppe))
+		{
+			foreach ($event->teilnehmer_gruppe as $group)
+			{
+				if (isset($group['gruppe_kurzbz']) && $group['gruppe_kurzbz'] !== '')
+					$groups[] = $group['gruppe_kurzbz'];
+			}
+		}
+
+		sort($groups, SORT_NATURAL | SORT_FLAG_CASE);
+
+		return implode(' / ', array_unique($groups));
+	}
+
+	/**
+	 * @param mixed $value String or list of strings.
+	 * @param string $separator Join separator.
+	 * @return string
+	 */
+	private function joinValues($value, $separator = ' / ')
+	{
+		return is_array($value) ? implode($separator, $value) : (string)$value;
+	}
+
+	/**
+	 * Builds one fully quoted RFC-style CSV row.
+	 *
+	 * @param array $values Row values.
+	 * @return string
+	 */
+	private function buildCSVLine(array $values)
+	{
+		$escapedValues = array_map(function ($value) {
+			$value = preg_replace('/\r\n|\r|\n/', "\r\n", (string)$value);
+			return '"'.str_replace('"', '""', $value).'"';
+		}, $values);
+
+		return implode(',', $escapedValues)."\r\n";
+	}
+
+	/**
+	 * @param mixed $dateTime Date/time input.
+	 * @return DateTime|null
+	 */
+	private function createDateTime($dateTime)
+	{
+		if ($dateTime instanceof DateTime)
+			return clone $dateTime;
+
+		if ($dateTime === null || $dateTime === '')
+			return null;
+
+		try
+		{
+			if (is_numeric($dateTime))
+				return new DateTime('@'.(int)$dateTime);
+
+			return new DateTime($dateTime);
+		}
+		catch (Exception $e)
+		{
+			return null;
+		}
+	}
+
+	private function getParticipants($event)
+	{
+		$values = array();
+		if (!isset($event->teilnehmer_person) || !is_array($event->teilnehmer_person))
+			return '';
+
+		foreach ($event->teilnehmer_person as $participant)
+		{
+			$value = $participant['kurzbz'];
+
+			if ($value !== '')
+				$values[] = $value;
+		}
+
+		sort($values, SORT_NATURAL | SORT_FLAG_CASE);
+
+		return implode(', ', array_unique($values));
+	}
+}

application/libraries/LvPlanExcelLib.php

@@ -0,0 +1,473 @@
+<?php
+
+if (!defined('BASEPATH'))
+	exit('No direct script access allowed');
+
+require_once(FHCPATH.'include/Excel/excel.php');
+
+class LvPlanExcelLib
+{
+	const WORKSHEET_NAME = 'Termine';
+
+	const HEADER = array(
+		'Datum',
+		'Von',
+		'Bis',
+		'Ort',
+		'Lektoren',
+		'Gruppen',
+		'Lehrfach',
+		'Anmerkung',
+		'StundeVon',
+		'StundeBis'
+	);
+
+	private $ci;
+
+	public function __construct()
+	{
+		$this->ci =& get_instance();
+	}
+
+	/**
+	 * Builds a BIFF8 Excel workbook for a user's timetable.
+	 *
+	 * @param string $uid User UID.
+	 * @param int $begin First included date as Unix timestamp.
+	 * @param int $ende Last included date as Unix timestamp.
+	 * @param string $type Timetable type (student, lektor, ort or verband).
+	 * @param string|null $ortKurzbz Room identifier for room plans.
+	 * @param array|null $verbandFilters Lehrverband filters.
+	 * @return string Binary workbook content.
+	 */
+	public function getContent(
+		$uid,
+		$begin,
+		$ende,
+		$type,
+		$ortKurzbz = null,
+		$verbandFilters = null
+	) {
+		if (!in_array($type, array('student', 'lektor', 'ort', 'verband'), true))
+			throw new InvalidArgumentException('Unsupported timetable type');
+		if ($type === 'ort' && (!is_string($ortKurzbz) || $ortKurzbz === ''))
+			throw new InvalidArgumentException('Missing room timetable filter');
+		if ($type === 'verband'
+			&& (!is_array($verbandFilters)
+				|| !array_key_exists('stg_kz', $verbandFilters)
+				|| !array_key_exists('sem', $verbandFilters)))
+		{
+			throw new InvalidArgumentException('Missing Lehrverband timetable filters');
+		}
+
+		$isLecturer = $type === 'lektor';
+		$this->ci->load->library('KalenderLib', array('uid' => $uid));
+		$this->ci->load->model('ressource/Stunde_model', 'StundeModel');
+
+		$startDate = date('Y-m-d', $begin);
+		$endDate = date('Y-m-d', $ende);
+
+		if ($type === 'verband')
+		{
+			$events = $this->ci->kalenderlib->getPlanForVerband(
+				$startDate,
+				$endDate,
+				$verbandFilters['stg_kz'],
+				$verbandFilters['sem'],
+				isset($verbandFilters['ver']) ? $verbandFilters['ver'] : null,
+				isset($verbandFilters['grp']) ? $verbandFilters['grp'] : null
+			);
+		}
+		elseif ($type === 'ort')
+		{
+			$events = $this->ci->kalenderlib
+				->getPlanForRoom($startDate, $endDate, $ortKurzbz);
+		}
+		elseif ($isLecturer)
+		{
+			$events = $this->ci->kalenderlib
+				->getPlanForLecturerByLecturer($startDate, $endDate, $uid);
+		}
+		else
+		{
+			$events = $this->ci->kalenderlib
+				->getPlanForStudentByStudent($startDate, $endDate, $uid);
+		}
+
+		if (!is_array($events))
+			$events = array();
+
+		usort($events, array($this, 'compareEventsByStart'));
+		$hourRaster = $this->loadHourRaster();
+		$rows = array();
+
+		foreach ($events as $event)
+		{
+			$row = $this->buildEventRow($event, $hourRaster);
+			if ($row !== null)
+				$rows[] = $row;
+		}
+
+		return $this->buildWorkbook($rows);
+	}
+
+	/**
+	 * @return array Timetable-hour raster ordered by hour number.
+	 */
+	private function loadHourRaster()
+	{
+		$this->ci->StundeModel->addSelect('stunde, beginn, ende');
+		$this->ci->StundeModel->addOrder('stunde', 'ASC');
+		$result = $this->ci->StundeModel->load();
+
+		if (isError($result))
+			throw new RuntimeException(getError($result));
+
+		if (!hasData($result))
+			return array();
+
+		$raster = array();
+		foreach (getData($result) as $hour)
+		{
+			$begin = $this->timeToSeconds($hour->beginn);
+			$end = $this->timeToSeconds($hour->ende);
+
+			if ($begin === null || $end === null)
+				continue;
+
+			$raster[] = array(
+				'stunde' => $hour->stunde,
+				'begin' => $begin,
+				'end' => $end
+			);
+		}
+
+		return $raster;
+	}
+
+	/**
+	 * @param object $event Calendar event.
+	 * @param array $hourRaster Timetable-hour raster.
+	 * @return array|null Excel row or null for invalid dates.
+	 */
+	private function buildEventRow($event, array $hourRaster)
+	{
+		$start = $this->createDateTime(isset($event->isostart) ? $event->isostart : null);
+		$end = $this->createDateTime(isset($event->isoend) ? $event->isoend : null);
+
+		if ($start === null || $end === null)
+			return null;
+
+		$timezone = new DateTimeZone('Europe/Vienna');
+		$start->setTimezone($timezone);
+		$end->setTimezone($timezone);
+
+		$isReservation = isset($event->type) && $event->type === 'reservierung';
+		$subject = $this->getSubject($event);
+
+		$note = isset($event->beschreibung) ? $event->beschreibung : '';
+		if ($note === '' && isset($event->titel) && !$isReservation)
+			$note = $event->titel;
+
+		return array(
+			$start->format('d.m.Y'),
+			$start->format('H:i:s'),
+			$end->format('H:i:s'),
+			$this->joinValues(isset($event->ort_kurzbz) ? $event->ort_kurzbz : array()),
+			!$isReservation ? $this->getParticipants($event) : $this->getLecturers($event),
+			$this->getGroups($event),
+			$subject,
+			$note,
+			$this->findHour($start->format('H:i:s'), $hourRaster, "start"),
+			$this->findHour($end->format('H:i:s'), $hourRaster, "end")
+		);
+	}
+
+	/**
+	 * @param object $event Calendar event.
+	 * @return string Event subject.
+	 */
+	private function getSubject($event)
+	{
+		if (isset($event->type) && $event->type === 'reservierung')
+		{
+			return isset($event->titel) ? $event->titel : '';
+		}
+
+		$subject = isset($event->lehrfach_bez) ? $event->lehrfach_bez : '';
+
+		if ($subject === '')
+			$subject = $this->joinValues(isset($event->topic) ? $event->topic : array());
+
+		return $subject;
+	}
+
+	/**
+	 * @param array $rows Workbook rows.
+	 * @return string Binary BIFF8 workbook content.
+	 */
+	private function buildWorkbook(array $rows)
+	{
+		$tempFile = tempnam(sys_get_temp_dir(), 'lvplan_excel_');
+		if ($tempFile === false)
+			throw new RuntimeException('Could not create temporary Excel file');
+
+		try
+		{
+			$workbook = new Spreadsheet_Excel_Writer($tempFile);
+			$workbook->setVersion(8);
+			$workbook->setTempDir(sys_get_temp_dir());
+
+			$worksheet =& $workbook->addWorksheet(self::WORKSHEET_NAME);
+			$worksheet->setInputEncoding('utf-8');
+
+			$boldFormat =& $workbook->addFormat();
+			$boldFormat->setBold();
+
+			$maxLengths = array();
+			foreach (self::HEADER as $column => $title)
+			{
+				$worksheet->writeString(0, $column, $title, $boldFormat);
+				$maxLengths[$column] = $this->getMaxLineLength($title);
+			}
+
+			foreach ($rows as $rowIndex => $row)
+			{
+				foreach ($row as $column => $value)
+				{
+					$value = (string)$value;
+					$worksheet->writeString($rowIndex + 1, $column, $value);
+					$maxLengths[$column] = max(
+						$maxLengths[$column],
+						$this->getMaxLineLength($value)
+					);
+				}
+			}
+
+			foreach ($maxLengths as $column => $length)
+				$worksheet->setColumn($column, $column, min($length + 2, 255));
+
+			$result = $workbook->close();
+			if ($result !== true)
+				throw new RuntimeException('Could not generate Excel workbook');
+
+			$content = file_get_contents($tempFile);
+			if ($content === false)
+				throw new RuntimeException('Could not read generated Excel workbook');
+
+			return $content;
+		}
+		finally
+		{
+			if (is_file($tempFile))
+				unlink($tempFile);
+		}
+	}
+
+	/**
+	 * @param object $event Calendar event.
+	 * @return string Lecturer names.
+	 */
+	private function getLecturers($event)
+	{
+		$lecturers = array();
+
+		if (isset($event->lektor) && is_array($event->lektor))
+		{
+			foreach ($event->lektor as $lecturer)
+			{
+				$name = trim(
+					(isset($lecturer['vorname']) ? $lecturer['vorname'] : '').' '
+					.(isset($lecturer['nachname']) ? $lecturer['nachname'] : '')
+				);
+
+				if ($name === '' && isset($lecturer['kurzbz']))
+					$name = $lecturer['kurzbz'];
+				if ($name !== '')
+					$lecturers[] = $name;
+			}
+		}
+
+		sort($lecturers, SORT_NATURAL | SORT_FLAG_CASE);
+
+		return implode(', ', array_unique($lecturers));
+	}
+
+	/**
+	 * @param object $event Calendar event.
+	 * @return string Participant group labels.
+	 */
+	private function getGroups($event)
+	{
+		$groups = array();
+
+		if (isset($event->gruppe) && is_array($event->gruppe))
+		{
+			foreach ($event->gruppe as $group)
+			{
+				if (isset($group['bezeichnung']) && $group['bezeichnung'] !== '')
+					$groups[] = $group['bezeichnung'];
+			}
+		}
+
+		if (isset($event->teilnehmer_gruppe) && is_array($event->teilnehmer_gruppe))
+		{
+			foreach ($event->teilnehmer_gruppe as $group)
+			{
+				if (isset($group['gruppe_kurzbz']) && $group['gruppe_kurzbz'] !== '')
+					$groups[] = $group['gruppe_kurzbz'];
+			}
+		}
+
+		sort($groups, SORT_NATURAL | SORT_FLAG_CASE);
+
+		return implode(',', array_unique($groups));
+	}
+
+	/**
+	 * @param string $time Local time.
+	 * @param array $hourRaster Timetable-hour raster.
+	 * @return string|int Timetable-hour number or an empty string.
+	 */
+	private function findHour($time, array $hourRaster, string $context = '')
+	{
+		$seconds = $this->timeToSeconds($time);
+		if ($seconds === null || count($hourRaster) === 0)
+			return '';
+
+		$firstHour = current($hourRaster);
+		$lastHour = end($hourRaster);
+		if ($seconds < $firstHour['begin'] || $seconds > $lastHour['end'])
+			return '';
+
+		foreach ($hourRaster as $hour)
+		{
+			if (
+				($seconds < $hour['end'] && $context === "start") ||
+				($seconds <= $hour['end'] && $context === "end")
+			)
+				return $hour['stunde'];
+		}
+
+		return '';
+	}
+
+	/**
+	 * @param string $time Time in HH:MM[:SS] format.
+	 * @return int|null Seconds since midnight.
+	 */
+	private function timeToSeconds($time)
+	{
+		if (!is_string($time) || !preg_match('/^(\d{1,2}):(\d{2})(?::(\d{2}))?$/', $time, $matches))
+			return null;
+
+		$hour = (int)$matches[1];
+		$minute = (int)$matches[2];
+		$second = isset($matches[3]) ? (int)$matches[3] : 0;
+
+		if ($hour > 23 || $minute > 59 || $second > 59)
+			return null;
+
+		return $hour * 3600 + $minute * 60 + $second;
+	}
+
+	/**
+	 * @param mixed $value String or list of strings.
+	 * @return string
+	 */
+	private function joinValues($value)
+	{
+		return is_array($value) ? implode(' / ', $value) : (string)$value;
+	}
+
+	/**
+	 * @param string $value Cell content.
+	 * @return int Maximum visual line length.
+	 */
+	private function getMaxLineLength($value)
+	{
+		$lines = preg_split('/\r\n|\r|\n/', (string)$value);
+		$maxLength = 0;
+
+		foreach ($lines as $line)
+			$maxLength = max($maxLength, mb_strlen($line));
+
+		return $maxLength;
+	}
+
+	/**
+	 * @param object $first First event.
+	 * @param object $second Second event.
+	 * @return int Comparison result.
+	 */
+	private function compareEventsByStart($first, $second)
+	{
+		$firstTimestamp = isset($first->isostart) ? strtotime($first->isostart) : false;
+		$secondTimestamp = isset($second->isostart) ? strtotime($second->isostart) : false;
+
+		$firstTimestamp = $firstTimestamp === false ? PHP_INT_MAX : $firstTimestamp;
+		$secondTimestamp = $secondTimestamp === false ? PHP_INT_MAX : $secondTimestamp;
+
+		if ($firstTimestamp === $secondTimestamp)
+			return 0;
+
+		return $firstTimestamp < $secondTimestamp ? -1 : 1;
+	}
+
+	/**
+	 * @param mixed $dateTime Date/time input.
+	 * @return DateTime|null
+	 */
+	private function createDateTime($dateTime)
+	{
+		if ($dateTime instanceof DateTime)
+			return clone $dateTime;
+
+		if ($dateTime === null || $dateTime === '')
+			return null;
+
+		try
+		{
+			if (is_numeric($dateTime))
+				return new DateTime('@'.(int)$dateTime);
+
+			return new DateTime($dateTime);
+		}
+		catch (Exception $e)
+		{
+			return null;
+		}
+	}
+
+	private function getParticipants($event)
+	{
+		$values = array();
+		if (!isset($event->teilnehmer_person) || !is_array($event->teilnehmer_person))
+			return '';
+
+		foreach ($event->teilnehmer_person as $participant)
+		{
+			$value = $participant['vorname'] . ' ' . $participant['nachname'];
+
+			if ($value !== '')
+				$values[] = $value;
+		}
+
+		sort($values, SORT_NATURAL | SORT_FLAG_CASE);
+
+		return implode(', ', array_unique($values));
+	}
+
+	private function getNestedValue($value, array $properties)
+	{
+		foreach ($properties as $property)
+		{
+			if (is_array($value) && isset($value[$property]))
+				return (string)$value[$property];
+			if (is_object($value) && isset($value->{$property}))
+				return (string)$value->{$property};
+		}
+
+		return is_scalar($value) ? (string)$value : '';
+	}
+}

application/libraries/LvPlanHTMLDetailLib.php

@@ -0,0 +1,780 @@
+<?php
+
+if (!defined('BASEPATH'))
+	exit('No direct script access allowed');
+
+require_once(FHCPATH.'include/functions.inc.php');
+require_once(FHCPATH.'include/phrasen.class.php');
+
+class LvPlanHTMLDetailLib
+{
+	const TIMEZONE = 'Europe/Vienna';
+
+	private $ci;
+	private $legacyPhrases;
+
+	public function __construct()
+	{
+		$this->ci =& get_instance();
+		$this->legacyPhrases = new phrasen(getSprache());
+	}
+
+	/**
+	 * Builds a timetable detail document for one date and hour.
+	 *
+	 * @param string $datum Date in YYYY-MM-DD format.
+	 * @param array $hour Selected timetable hour.
+	 * @param string $type Timetable type.
+	 * @param array $filters Type-specific filters.
+	 * @return string
+	 */
+	public function getContent($datum, array $hour, $type, array $filters)
+	{
+		if (!in_array($type, array('student', 'lektor', 'verband', 'ort'), true))
+			throw new InvalidArgumentException('Unsupported timetable type');
+		foreach (array('number', 'begin', 'end') as $property)
+		{
+			if (!isset($hour[$property]) || !is_scalar($hour[$property]))
+				throw new InvalidArgumentException('Invalid timetable hour');
+		}
+
+		$events = $this->loadEvents($datum, $type, $filters);
+		$events = $this->filterEventsByHour($events, $datum, $hour);
+		if ($type === 'verband'
+			&& isset($filters['ort_kurzbz'])
+			&& $filters['ort_kurzbz'] !== '')
+		{
+			$events = $this->filterEventsByRoom(
+				$events,
+				$filters['ort_kurzbz']
+			);
+		}
+		$sections = array(
+			'teaching' => array(),
+			'reservations' => array(),
+			'events' => array()
+		);
+
+		foreach ($events as $event)
+		{
+			if ($event->type === 'lehreinheit')
+				$sections['teaching'][] = $event;
+			elseif ($event->type === 'reservierung')
+				$sections['reservations'][] = $event;
+			else
+				$sections['events'][] = $event;
+		}
+
+		return $this->renderDocument($datum, $hour, $sections);
+	}
+
+	/**
+	 * Loads the same published calendar data used by the HTML preview.
+	 *
+	 * @return array
+	 */
+	private function loadEvents($datum, $type, array $filters)
+	{
+		$uid = isset($filters['uid']) && is_string($filters['uid'])
+			? $filters['uid']
+			: getAuthUID();
+		$this->ci->load->library('KalenderLib', array('uid' => $uid));
+
+		if ($type === 'verband')
+		{
+			$events = $this->ci->kalenderlib->getPlanForVerband(
+				$datum,
+				$datum,
+				$filters['stg_kz'],
+				$filters['sem'],
+				isset($filters['ver']) ? $filters['ver'] : null,
+				isset($filters['grp']) ? $filters['grp'] : null
+			);
+		}
+		elseif ($type === 'ort')
+		{
+			$events = $this->ci->kalenderlib->getPlanForRoom(
+				$datum,
+				$datum,
+				$filters['ort_kurzbz']
+			);
+		}
+		elseif ($type === 'lektor')
+		{
+			$events = $this->ci->kalenderlib->getPlanForLecturerByLecturer(
+				$datum,
+				$datum,
+				$filters['uid']
+			);
+		}
+		else
+		{
+			$events = $this->ci->kalenderlib->getPlanForStudentByStudent(
+				$datum,
+				$datum,
+				$filters['uid']
+			);
+		}
+
+		return is_array($events) ? $events : array();
+	}
+
+	/**
+	 * Keeps events that overlap the selected timetable hour.
+	 *
+	 * @return array
+	 */
+	private function filterEventsByHour(array $events, $datum, array $hour)
+	{
+		$timezone = new DateTimeZone(self::TIMEZONE);
+		$hourStart = DateTime::createFromFormat(
+			'!Y-m-d H:i:s',
+			$datum.' '.$this->normalizeTime($hour['begin']),
+			$timezone
+		);
+		$hourEnd = DateTime::createFromFormat(
+			'!Y-m-d H:i:s',
+			$datum.' '.$this->normalizeTime($hour['end']),
+			$timezone
+		);
+
+		if ($hourStart === false || $hourEnd === false || $hourEnd <= $hourStart)
+			throw new InvalidArgumentException('Invalid timetable hour range');
+
+		$matches = array();
+		foreach ($events as $event)
+		{
+			$start = $this->getEventDateTime($event, 'isostart', 'datum', 'beginn');
+			$end = $this->getEventDateTime($event, 'isoend', 'datum', 'ende');
+
+			if ($start === null || $end === null || $end <= $start)
+				continue;
+			if ($start < $hourEnd && $end > $hourStart)
+			{
+				$matches[] = array(
+					'event' => $event,
+					'start' => $start,
+					'end' => $end
+				);
+			}
+		}
+
+		usort($matches, function ($first, $second) {
+			$comparison = $first['start']->getTimestamp()
+				<=> $second['start']->getTimestamp();
+			if ($comparison !== 0)
+				return $comparison;
+
+			$firstId = isset($first['event']->kalender_id)
+				? (int)$first['event']->kalender_id
+				: 0;
+			$secondId = isset($second['event']->kalender_id)
+				? (int)$second['event']->kalender_id
+				: 0;
+			return $firstId <=> $secondId;
+		});
+
+		return array_map(function ($match) {
+			return $match['event'];
+		}, $matches);
+	}
+
+	/**
+	 * Keeps Verband events assigned to the room selected in the preview cell.
+	 *
+	 * @return array
+	 */
+	private function filterEventsByRoom(array $events, $ortKurzbz)
+	{
+		$matches = array();
+		foreach ($events as $event)
+		{
+			$rooms = isset($event->ort_kurzbz)
+				? $event->ort_kurzbz
+				: array();
+			if (!is_array($rooms))
+				$rooms = array($rooms);
+
+			foreach ($rooms as $room)
+			{
+				if (is_scalar($room) && (string)$room === (string)$ortKurzbz)
+				{
+					$matches[] = $event;
+					continue 2;
+				}
+			}
+
+			if (!isset($event->ort_details) || !is_array($event->ort_details))
+				continue;
+
+			foreach ($event->ort_details as $room)
+			{
+				if ($this->getNestedValue($room, 'ort_kurzbz') === (string)$ortKurzbz)
+				{
+					$matches[] = $event;
+					continue 2;
+				}
+			}
+		}
+
+		return $matches;
+	}
+
+	/**
+	 * Renders the complete HTML document.
+	 */
+	private function renderDocument($datum, array $hour, array $sections)
+	{
+		$title = $this->phrase('lvplan', 'lehrveranstaltungsplanDetails');
+		$html = '<!DOCTYPE html><html lang="de"><head><meta charset="UTF-8">';
+		$html .= '<meta name="viewport" content="width=device-width, initial-scale=1">';
+		$html .= '<title>'.$this->escape($title).'</title>';
+		$html .= '<link rel="stylesheet" href="'
+			.$this->escape($this->getAppRoot().'skin/style.css.php')
+			.'" type="text/css">';
+		$html .= '<style>'
+			.'.stdplan td{vertical-align:top}.detail-lines{white-space:normal}'
+			.'.detail-empty{color:#666}.stdplan{margin-bottom:1em}'
+			.'</style></head><body id="inhalt">';
+		$html .= '<h2>'.$this->escape($this->phrase('lvplan', 'lehrveranstaltungsplan'))
+			.' &rArr; '.$this->escape($this->phrase('abgabetool', 'details')).'</h2>';
+		$html .= $this->escape($this->phrase('abgabetool', 'datum')).': '
+			.$this->escape($this->formatDate($datum)).'<br>';
+		$html .= $this->escape($this->phrase('global', 'stunde')).': '
+			.$this->escape($hour['number']).' ('
+			.$this->escape(substr((string)$hour['begin'], 0, 5)).'–'
+			.$this->escape(substr((string)$hour['end'], 0, 5)).')<br><br>';
+
+		if (!empty($sections['teaching']))
+			$html .= $this->renderTeachingTable($sections['teaching']);
+		if (!empty($sections['reservations']))
+			$html .= $this->renderReservationTable($sections['reservations']);
+		if (!empty($sections['events']))
+			$html .= $this->renderEventTable($sections['events']);
+
+		if (empty($sections['teaching'])
+			&& empty($sections['reservations'])
+			&& empty($sections['events']))
+		{
+			$html .= '<p class="detail-empty">0 '
+				.$this->escape($this->phrase('global', 'termine')).'</p>';
+		}
+
+		if (defined('MAIL_LVPLAN'))
+		{
+			$html .= '<p>'.$this->phrase(
+				'lvplan',
+				'FragenZuLvPlan',
+				array(constant('MAIL_LVPLAN'))
+			).'</p>';
+		}
+
+		return $html.'</body></html>';
+	}
+
+	/**
+	 * Renders teaching-unit details.
+	 */
+	private function renderTeachingTable(array $events)
+	{
+		$html = '<table class="stdplan"><thead><tr>';
+		foreach (array(
+			array('lvplan', 'unr'),
+			array('lvaliste', 'lektor'),
+			array('lvplan', 'ort'),
+			array('lvaliste', 'lehrfach'),
+			array('global', 'bezeichnung'),
+			array('global', 'verband'),
+			array('lvplan', 'einheit'),
+			array('lvplan', 'info')
+		) as $heading)
+		{
+			$html .= '<th>'.$this->escape($this->phrase($heading[0], $heading[1])).'</th>';
+		}
+		$html .= '</tr></thead><tbody>';
+
+		foreach ($events as $index => $event)
+		{
+			$html .= '<tr class="liste'.(($index + 1) % 2).'">';
+			$html .= $this->cell($this->renderScalarLines(
+				isset($event->unr) ? $event->unr : array()
+			));
+			$html .= $this->cell($this->renderPeople(
+				isset($event->lektor) ? $event->lektor : array(),
+				'profile'
+			));
+			$html .= $this->cell($this->renderRooms($event));
+			$html .= $this->cell($this->renderSubjectValues($event, 'kurzbz'));
+			$html .= $this->cell($this->renderSubjectValues($event, 'bezeichnung'));
+			$html .= $this->cell($this->renderTeachingGroups($event, false));
+			$html .= $this->cell($this->renderTeachingGroups($event, true));
+			$html .= $this->cell($this->renderOldTempusNoticeTagNote($event));
+			$html .= '</tr>';
+		}
+
+		return $html.'</tbody></table>';
+	}
+
+	/**
+	 * Renders reservation details.
+	 */
+	private function renderReservationTable(array $events)
+	{
+		$html = '<h2>'.$this->escape($this->phrase('lvplan', 'reservierungen')).'</h2>';
+		$html .= '<table class="stdplan"><thead><tr>';
+		foreach (array(
+			array('global', 'titel'),
+			array('lvplan', 'ort'),
+			array('global', 'person'),
+			array('global', 'beschreibung'),
+			array('lvplan', 'reserviertVon')
+		) as $heading)
+		{
+			$html .= '<th>'.$this->escape($this->phrase($heading[0], $heading[1])).'</th>';
+		}
+		$html .= '</tr></thead><tbody>';
+
+		foreach ($events as $index => $event)
+		{
+			$html .= '<tr class="liste'.(($index + 1) % 2).'">';
+			$html .= $this->cell($this->escape($this->getScalar($event, 'titel')));
+			$html .= $this->cell($this->renderRooms($event));
+			$html .= $this->cell($this->renderParticipants($event));
+			$html .= $this->cell($this->renderText(
+				$this->getScalar($event, 'beschreibung')
+			));
+			$html .= $this->cell($this->renderCreator($event));
+			$html .= '</tr>';
+		}
+
+		return $html.'</tbody></table>';
+	}
+
+	/**
+	 * Renders non-teaching, non-reservation calendar events.
+	 */
+	private function renderEventTable(array $events)
+	{
+		$html = '<h2>'.$this->escape($this->phrase('global', 'termine')).'</h2>';
+		$html .= '<table class="stdplan"><thead><tr>';
+		foreach (array(
+			array('global', 'titel'),
+			array('lvplan', 'ort'),
+			array('ui', 'organisierende'),
+			array('ui', 'teilnehmende'),
+			array('global', 'beschreibung')
+		) as $heading)
+		{
+			$html .= '<th>'.$this->escape($this->phrase($heading[0], $heading[1])).'</th>';
+		}
+		$html .= '</tr></thead><tbody>';
+
+		foreach ($events as $index => $event)
+		{
+			$html .= '<tr class="liste'.(($index + 1) % 2).'">';
+			$html .= $this->cell($this->escape($this->getEventTitle($event)));
+			$html .= $this->cell($this->renderRooms($event));
+			$html .= $this->cell($this->renderPeople(
+				isset($event->lektor) ? $event->lektor : array(),
+				'mail'
+			));
+			$html .= $this->cell($this->renderParticipants($event));
+			$html .= $this->cell($this->renderText(
+				$this->getScalar($event, 'beschreibung')
+			));
+			$html .= '</tr>';
+		}
+
+		return $html.'</tbody></table>';
+	}
+
+	private function renderSubjectValues($event, $property)
+	{
+		$values = array();
+		if (isset($event->lehrfach_details) && is_array($event->lehrfach_details))
+		{
+			foreach ($event->lehrfach_details as $subject)
+			{
+				$value = $this->getNestedValue($subject, $property);
+				if ($value !== '')
+					$values[] = $value;
+			}
+		}
+
+		if (empty($values))
+		{
+			$fallback = $property === 'kurzbz'
+				? $this->getScalar($event, 'lehrfach')
+				: $this->getScalar($event, 'lehrfach_bez');
+			if ($fallback !== '')
+				$values[] = $fallback;
+		}
+
+		return $this->renderScalarLines($values);
+	}
+
+	private function renderTeachingGroups($event, $specialGroups)
+	{
+		$values = array();
+		if (isset($event->gruppe) && is_array($event->gruppe))
+		{
+			foreach ($event->gruppe as $group)
+			{
+				$groupCode = $this->getNestedValue($group, 'gruppe_kurzbz');
+				if ($specialGroups && $groupCode !== '')
+					$values[] = $groupCode;
+				elseif (!$specialGroups && $groupCode === '')
+				{
+					$designation = $this->getNestedValue($group, 'bezeichnung');
+					if ($designation !== '')
+						$values[] = $designation;
+				}
+			}
+		}
+
+		return $this->renderGroupLinks($values);
+	}
+
+	private function renderParticipants($event)
+	{
+		$parts = array();
+		$people = $this->renderPeople(
+			isset($event->teilnehmer_person) ? $event->teilnehmer_person : array(),
+			'mail'
+		);
+		if ($people !== '')
+			$parts[] = $people;
+
+		$groups = array();
+		if (isset($event->teilnehmer_gruppe) && is_array($event->teilnehmer_gruppe))
+		{
+			foreach ($event->teilnehmer_gruppe as $group)
+			{
+				$value = $this->getNestedValue($group, 'bezeichnung');
+				if ($value === '')
+					$value = $this->getNestedValue($group, 'gruppe_kurzbz');
+				if ($value !== '')
+					$groups[] = $value;
+			}
+		}
+		$groupLinks = $this->renderGroupLinks($groups);
+		if ($groupLinks !== '')
+			$parts[] = $groupLinks;
+
+		return implode('<br>', $parts);
+	}
+
+	private function renderCreator($event)
+	{
+		if (isset($event->created_by) && (is_array($event->created_by) || is_object($event->created_by)))
+			return $this->renderPeople(array($event->created_by), 'plain');
+
+		return $this->renderPeople(
+			isset($event->lektor) ? $event->lektor : array(),
+			'plain'
+		);
+	}
+
+	private function renderPeople(array $people, $linkType)
+	{
+		$values = array();
+		$seen = array();
+		foreach ($people as $person)
+		{
+			$uid = $this->getNestedValue($person, 'mitarbeiter_uid');
+			if ($uid === '')
+				$uid = $this->getNestedValue($person, 'uid');
+
+			$nameParts = array();
+			foreach (array('titelpre', 'vorname', 'nachname', 'titelpost') as $property)
+			{
+				$value = trim($this->getNestedValue($person, $property));
+				if ($value !== '')
+					$nameParts[] = $value;
+			}
+			$name = implode(' ', $nameParts);
+			if ($name === '')
+				$name = $uid !== '' ? $uid : $this->getNestedValue($person, 'kurzbz');
+			if ($name === '')
+				continue;
+
+			$key = $uid !== '' ? $uid : $name;
+			if (isset($seen[$key]))
+				continue;
+			$seen[$key] = true;
+
+			$label = $this->escape($name);
+			if ($linkType === 'profile' && $uid !== '')
+			{
+				$personalNumber = $this->getNestedValue($person, 'personalnummer');
+				$profileAllowed = $personalNumber === ''
+					|| !is_numeric($personalNumber)
+					|| (int)$personalNumber >= 0;
+				if ($profileAllowed)
+				$label = $this->link($this->getProfileUrl($uid), $label);
+			}
+			elseif ($linkType === 'mail' && $uid !== '' && defined('DOMAIN'))
+			{
+				$label = $this->link(
+					'mailto:'.$uid.'@'.constant('DOMAIN'),
+					$label
+				);
+			}
+
+			$values[] = $label;
+		}
+
+		return implode('<br>', $values);
+	}
+
+	private function renderRooms($event)
+	{
+		$values = array();
+		$seen = array();
+		if (isset($event->ort_details) && is_array($event->ort_details))
+		{
+			foreach ($event->ort_details as $room)
+			{
+				$code = $this->getNestedValue($room, 'ort_kurzbz');
+				if ($code === '' || isset($seen[$code]))
+					continue;
+				$seen[$code] = true;
+
+				$label = $this->escape($code);
+				$contentId = $this->getNestedValue($room, 'content_id');
+				$title = $this->getNestedValue($room, 'bezeichnung');
+				if ($contentId !== '')
+				$label = $this->link($this->getRoomUrl($contentId), $label, $title);
+				elseif ($title !== '')
+					$label = '<span title="'.$this->escape($title).'">'.$label.'</span>';
+
+				$values[] = $label;
+			}
+		}
+
+		if (isset($event->ort_kurzbz) && is_array($event->ort_kurzbz))
+		{
+			foreach ($event->ort_kurzbz as $code)
+			{
+				$code = is_scalar($code) ? (string)$code : '';
+				if ($code === '' || isset($seen[$code]))
+					continue;
+				$seen[$code] = true;
+				$values[] = $this->escape($code);
+			}
+		}
+
+		if (isset($event->locations) && is_array($event->locations))
+		{
+			foreach ($event->locations as $location)
+			{
+				$location = is_scalar($location) ? trim((string)$location) : '';
+				if ($location !== '' && !isset($seen['location:'.$location]))
+				{
+					$seen['location:'.$location] = true;
+					$values[] = $this->escape($location);
+				}
+			}
+		}
+
+		return implode('<br>', $values);
+	}
+
+	private function renderGroupLinks(array $groups)
+	{
+		$values = array();
+		foreach ($this->uniqueScalarValues($groups) as $group)
+		{
+			$label = $this->escape($group);
+			if (defined('DOMAIN'))
+			{
+				$label = $this->link(
+					'mailto:'.mb_strtolower($group).'@'.constant('DOMAIN'),
+					$label
+				);
+			}
+			$values[] = $label;
+		}
+
+		return implode('<br>', $values);
+	}
+
+	private function renderScalarLines($values)
+	{
+		if (!is_array($values))
+			$values = array($values);
+
+		$escaped = array_map(array($this, 'escape'), $this->uniqueScalarValues($values));
+		return implode('<br>', $escaped);
+	}
+
+	private function uniqueScalarValues(array $values)
+	{
+		$result = array();
+		$seen = array();
+		foreach ($values as $value)
+		{
+			if (!is_scalar($value))
+				continue;
+			$value = trim((string)$value);
+			if ($value === '' || isset($seen[$value]))
+				continue;
+			$seen[$value] = true;
+			$result[] = $value;
+		}
+
+		sort($result, SORT_STRING | SORT_FLAG_CASE);
+		return $result;
+	}
+
+	private function renderOldTempusNoticeTagNote($event)
+	{
+		if (empty($event->tags)) return null;
+
+		$parsedTags = $event->tags;
+		if (!is_array($event->tags)) 
+			$parsedTags = json_decode($event->tags, true);
+
+		foreach ($parsedTags as $tag)
+		{
+			if (isset($tag['typ_kurzbz']) && $tag['typ_kurzbz'] === 'hinweis' && isset($tag['insertvon']) && $tag['insertvon'] === 'oldToNewTempusMigration')
+				return $tag['notiz'] ?? null;
+		}
+
+		return null;
+	}
+
+	private function renderText($value)
+	{
+		return nl2br($this->escape($value), false);
+	}
+
+	private function getEventTitle($event)
+	{
+		foreach (array('titel', 'lehrfach_bez', 'lehrfach') as $property)
+		{
+			$value = trim($this->getScalar($event, $property));
+			if ($value !== '')
+				return $value;
+		}
+
+		return '';
+	}
+
+	private function getEventDateTime($event, $isoProperty, $dateProperty, $timeProperty)
+	{
+		$value = isset($event->{$isoProperty}) ? $event->{$isoProperty} : null;
+		if (($value === null || $value === '')
+			&& isset($event->{$dateProperty})
+			&& isset($event->{$timeProperty}))
+		{
+			$value = $event->{$dateProperty}.' '.$event->{$timeProperty};
+		}
+
+		if ($value === null || $value === '')
+			return null;
+
+		try
+		{
+			$date = is_numeric($value)
+				? new DateTime('@'.(int)$value)
+				: new DateTime($value, new DateTimeZone(self::TIMEZONE));
+			$date->setTimezone(new DateTimeZone(self::TIMEZONE));
+			return $date;
+		}
+		catch (Exception $exception)
+		{
+			return null;
+		}
+	}
+
+	private function normalizeTime($time)
+	{
+		$time = (string)$time;
+		if (preg_match('/^(\d{1,2}:\d{2}:\d{2})(?:\.\d+)?$/', $time, $matches))
+			return $matches[1];
+		if (preg_match('/^\d{1,2}:\d{2}$/', $time))
+			return $time.':00';
+
+		return $time;
+	}
+
+	private function formatDate($datum)
+	{
+		$date = DateTime::createFromFormat(
+			'!Y-m-d',
+			$datum,
+			new DateTimeZone(self::TIMEZONE)
+		);
+		return $date === false ? $datum : $date->format('d.m.Y');
+	}
+
+	private function getScalar($object, $property)
+	{
+		return isset($object->{$property}) && is_scalar($object->{$property})
+			? (string)$object->{$property}
+			: '';
+	}
+
+	private function getNestedValue($value, $property)
+	{
+		if (is_array($value) && isset($value[$property]) && is_scalar($value[$property]))
+			return (string)$value[$property];
+		if (is_object($value) && isset($value->{$property}) && is_scalar($value->{$property}))
+			return (string)$value->{$property};
+
+		return '';
+	}
+
+	private function cell($content)
+	{
+		return '<td class="detail-lines">'.$content.'</td>';
+	}
+
+	private function link($url, $escapedLabel, $title = '')
+	{
+		$html = '<a href="'.$this->escape($url).'"';
+		if ($title !== '')
+			$html .= ' title="'.$this->escape($title).'"';
+		return $html.'>'.$escapedLabel.'</a>';
+	}
+
+	private function getProfileUrl($uid)
+	{
+		return $this->getAppRoot().'cis/private/profile/index.php?'
+			.http_build_query(array('uid' => $uid), '', '&', PHP_QUERY_RFC3986);
+	}
+
+	private function getRoomUrl($contentId)
+	{
+		return $this->getAppRoot().'cms/content.php?'
+			.http_build_query(
+				array('content_id' => $contentId),
+				'',
+				'&',
+				PHP_QUERY_RFC3986
+			);
+	}
+
+	private function phrase($category, $phrase, array $parameters = array())
+	{
+		if (($category === 'global' && $phrase === 'termine')
+			|| ($category === 'ui'
+				&& in_array($phrase, array('organisierende', 'teilnehmende'), true)))
+		{
+			return $this->ci->p->t($category, $phrase, $parameters);
+		}
+
+		return $this->legacyPhrases->t($category.'/'.$phrase, $parameters);
+	}
+
+	private function escape($value)
+	{
+		return htmlspecialchars((string)$value, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8');
+	}
+
+	private function getAppRoot()
+	{
+		return defined('APP_ROOT') ? rtrim(APP_ROOT, '/').'/' : '/';
+	}
+}

application/libraries/LvPlanHTMLLib.php

@@ -0,0 +1,864 @@
+<?php
+
+if (!defined('BASEPATH'))
+	exit('No direct script access allowed');
+
+class LvPlanHTMLLib
+{
+	const TIMEZONE = 'Europe/Vienna';
+	const DETAIL_WINDOW_NAME = 'Details';
+	const DETAIL_WINDOW_OPTIONS = 'height=320,width=550,left=0,top=0,hotkeys=0,resizable=yes,status=no,scrollbars=no,toolbar=no,location=no,menubar=no,dependent=yes';
+
+	CONST NOTICE_TAG_ICON = '📝';
+
+	private $ci;
+
+	public function __construct()
+	{
+		$this->ci =& get_instance();
+	}
+
+	/**
+	 * Builds a complete printable timetable document.
+	 *
+	 * @param int $begin First included date as Unix timestamp.
+	 * @param int $ende Last included date as Unix timestamp.
+	 * @param string $type Timetable type.
+	 * @param array $filters Type-specific filters.
+	 * @return string
+	 */
+	public function getContent($begin, $ende, $type, array $filters)
+	{
+		if (!in_array($type, array('student', 'lektor', 'verband', 'ort'), true))
+			throw new InvalidArgumentException('Unsupported timetable type');
+
+		if ($type === 'verband')
+			$events = $this->getVerbandEvents($begin, $ende, $filters);
+		elseif ($type === 'ort')
+			$events = $this->getRoomEvents($begin, $ende, $filters);
+		else
+			$events = $this->getPersonalEvents($begin, $ende, $type, $filters);
+
+		$hourRaster = $this->loadHourRaster();
+		$normalizedEvents = $this->normalizeEvents($events);
+		
+		return $this->renderDocument(
+			$begin,
+			$ende,
+			$type,
+			$filters,
+			$hourRaster,
+			$normalizedEvents
+		);
+	}
+
+	/**
+	 * @return array Personal plan events.
+	 */
+	private function getPersonalEvents($begin, $ende, $type, array $filters)
+	{
+		if (!isset($filters['uid']) || !is_string($filters['uid']) || $filters['uid'] === '')
+			throw new InvalidArgumentException('Missing personal timetable UID');
+
+		$uid = $filters['uid'];
+		$isLecturer = $type === 'lektor';
+		$this->ci->load->library('KalenderLib', array('uid' => $uid));
+
+		$startDate = $this->formatLocalDate($begin);
+		$endDate = $this->formatLocalDate($ende);
+
+		if ($isLecturer)
+		{
+			$events = $this->ci->kalenderlib
+				->getPlanForLecturerByLecturer($startDate, $endDate, $uid);
+		}
+		else
+		{
+			$events = $this->ci->kalenderlib
+				->getPlanForStudentByStudent($startDate, $endDate, $uid);
+		}
+
+		return is_array($events) ? $events : array();
+	}
+
+	/**
+	 * @return array Room plan events.
+	 */
+	private function getRoomEvents($begin, $ende, array $filters)
+	{
+		if (!isset($filters['ort_kurzbz'])
+			|| !is_string($filters['ort_kurzbz'])
+			|| $filters['ort_kurzbz'] === '')
+		{
+			throw new InvalidArgumentException('Missing room timetable filter');
+		}
+
+		$this->ci->load->library('KalenderLib', array('uid' => getAuthUID()));
+		$events = $this->ci->kalenderlib->getPlanForRoom(
+			$this->formatLocalDate($begin),
+			$this->formatLocalDate($ende),
+			$filters['ort_kurzbz']
+		);
+
+		return is_array($events) ? $events : array();
+	}
+
+	/**
+	 * @return array Lehrverband plan events.
+	 */
+	private function getVerbandEvents($begin, $ende, array $filters)
+	{
+		foreach (array('stg_kz', 'sem') as $name)
+		{
+			if (!array_key_exists($name, $filters))
+				throw new InvalidArgumentException('Missing Lehrverband filter: '.$name);
+		}
+
+		$this->ci->load->library('KalenderLib', array('uid' => getAuthUID()));
+		$events = $this->ci->kalenderlib->getPlanForVerband(
+			$this->formatLocalDate($begin),
+			$this->formatLocalDate($ende),
+			$filters['stg_kz'],
+			$filters['sem'],
+			isset($filters['ver']) ? $filters['ver'] : null,
+			isset($filters['grp']) ? $filters['grp'] : null
+		);
+
+		return is_array($events) ? $events : array();
+	}
+
+	/**
+	 * @return array Timetable-hour raster.
+	 */
+	private function loadHourRaster()
+	{
+		$this->ci->load->model('ressource/Stunde_model', 'StundeModel');
+		$result = $this->ci->StundeModel->execReadOnlyQuery(
+			'SELECT stunde, beginn, ende
+			FROM lehre.tbl_stunde
+			ORDER BY stunde'
+		);
+
+		if (isError($result))
+			throw new RuntimeException(getError($result));
+		if (!hasData($result))
+			return array();
+
+		$raster = array();
+		foreach (getData($result) as $hour)
+		{
+			$start = $this->timeToSeconds($hour->beginn);
+			$end = $this->timeToSeconds($hour->ende);
+
+			if ($start === null || $end === null || $end <= $start)
+				continue;
+
+			$raster[] = array(
+				'number' => (string)$hour->stunde,
+				'begin' => $start,
+				'end' => $end,
+				'begin_label' => substr((string)$hour->beginn, 0, 5),
+				'end_label' => substr((string)$hour->ende, 0, 5)
+			);
+		}
+
+		return $raster;
+	}
+
+	/**
+	 * @param array $events Events from KalenderLib.
+	 * @return array
+	 */
+	private function normalizeEvents(array $events)
+	{
+		$normalized = array();
+
+		foreach ($events as $event)
+		{
+			$start = $this->getEventDateTime($event, 'isostart', 'datum', 'beginn');
+			$end = $this->getEventDateTime($event, 'isoend', 'datum', 'ende');
+
+			if ($start === null || $end === null || $end <= $start)
+				continue;
+
+			$isReservation = isset($event->type) && $event->type === 'reservierung';
+			
+			$title = '';
+			if ($isReservation) {
+				$title = $this->getScalar($event, 'titel');
+			} else {
+				$title = $this->joinValue(isset($event->topic) ? $event->topic : '');
+			}
+
+			if ($title === '')
+				$title = $this->getScalar($event, 'lehrfach_bez');
+
+			$infoTag = $this->getOldTempusNoticeTag($event);
+			if (!empty($infoTag))
+			{
+				$title .= ' ' . self::NOTICE_TAG_ICON;
+			}
+
+			$normalized[] = array(
+				'start' => $start,
+				'end' => $end,
+				'date' => $start->format('Y-m-d'),
+				'title' => $title,
+				'location' => $this->joinValue(
+					isset($event->ort_kurzbz) ? $event->ort_kurzbz : '',
+					' / '
+				),
+				'detail_ort_kurzbz' => $this->getFirstScalarValue(
+					isset($event->ort_kurzbz) ? $event->ort_kurzbz : ''
+				),
+				'lecturers' => $this->getLecturers($event),
+				'participants' => $this->getParticipants($event),
+				'groups' => $this->getGroups($event),
+				'note' => $this->getEventNote($event, $isReservation),
+				'color' => $this->getColor($event),
+				'infoTagTitle' => !empty($infoTag) && isset($infoTag['notiz']) ? $infoTag['notiz'] : '',
+			);
+		}
+
+		usort($normalized, function ($first, $second) {
+			return $first['start']->getTimestamp() <=> $second['start']->getTimestamp();
+		});
+
+		return $normalized;
+	}
+
+	/**
+	 * Renders the complete HTML document.
+	 */
+	private function renderDocument(
+		$begin,
+		$ende,
+		$type,
+		array $filters,
+		array $hourRaster,
+		array $events
+	) {
+		$timezone = new DateTimeZone(self::TIMEZONE);
+		$rangeStart = (new DateTime('@'.$begin))->setTimezone($timezone)->setTime(0, 0, 0);
+		$rangeEnd = (new DateTime('@'.$ende))->setTimezone($timezone)->setTime(23, 59, 59);
+
+		$weeks = $this->buildWeeks($rangeStart, $rangeEnd, $hourRaster, $events);
+		$title = $this->getDocumentTitle($type, $filters);
+		$appRoot = $this->getAppRoot();
+
+		$html = '<!DOCTYPE html><html lang="de"><head><meta charset="UTF-8">';
+		$html .= '<meta name="viewport" content="width=device-width, initial-scale=1">';
+		$html .= '<title>'.$this->escape('Kalender').'</title>';
+		$html .= '<link rel="stylesheet" href="'.$this->escape($appRoot.'skin/style.css.php').'" type="text/css">';
+		$html .= '<link rel="stylesheet" media="print" href="'.$this->escape($appRoot.'skin/cis.css').'" type="text/css">';
+		$html .= '<link rel="stylesheet" media="print" href="'.$this->escape($appRoot.'skin/print.css').'" type="text/css">';
+		$html .= '<style>'.$this->getStyles().'</style></head>';
+		$html .= '<body id="inhalt"><h1>'.$this->escape($title).'</h1>';
+
+		foreach ($weeks as $week)
+			$html .= $this->renderWeek($week, $hourRaster, $type, $filters);
+
+		if (empty($weeks))
+			$html .= '<p>Keine Termine im gewählten Zeitraum.</p>';
+
+		$html .= '</body></html>';
+		return $html;
+	}
+
+	/**
+	 * Builds week/day/cell collections for rendering.
+	 */
+	private function buildWeeks(DateTime $rangeStart, DateTime $rangeEnd, array $raster, array $events)
+	{
+		$weeks = array();
+		$weekStart = clone $rangeStart;
+
+		while ($weekStart <= $rangeEnd)
+		{
+			$weekKey = $weekStart->format('Y-m-d');
+			$weekEnd = (clone $weekStart)->modify('+6 days');
+			$days = array();
+
+			for ($dayOffset = 0; $dayOffset < 7; $dayOffset++)
+			{
+				$date = (clone $weekStart)->modify('+'.$dayOffset.' days');
+				$days[$date->format('Y-m-d')] = array(
+					'date' => $date,
+					'cells' => array_fill(0, count($raster), array())
+				);
+			}
+
+			$weeks[$weekKey] = array(
+				'start' => clone $weekStart,
+				'end' => $weekEnd,
+				'days' => $days,
+				'outside' => array()
+			);
+
+			$weekStart->modify('+7 days');
+		}
+
+		foreach ($events as $event)
+		{
+			$eventWeek = clone $event['start'];
+			$eventWeek->modify('monday this week')->setTime(0, 0, 0);
+			$weekKey = $eventWeek->format('Y-m-d');
+			$dateKey = $event['date'];
+
+			if (!isset($weeks[$weekKey]['days'][$dateKey]))
+				continue;
+
+			$matchingSlots = $this->getMatchingSlots($event, $raster);
+			if (empty($matchingSlots))
+			{
+				$weeks[$weekKey]['outside'][] = $event;
+				continue;
+			}
+
+			foreach ($matchingSlots as $slot)
+				$weeks[$weekKey]['days'][$dateKey]['cells'][$slot][] = $event;
+		}
+
+		return array_values($weeks);
+	}
+
+	/**
+	 * @return array Raster indexes overlapping an event.
+	 */
+	private function getMatchingSlots(array $event, array $raster)
+	{
+		if ($event['start']->format('Y-m-d') !== $event['end']->format('Y-m-d'))
+			return array();
+
+		$start = $this->timeToSeconds($event['start']->format('H:i:s'));
+		$end = $this->timeToSeconds($event['end']->format('H:i:s'));
+		$matches = array();
+
+		foreach ($raster as $index => $hour)
+		{
+			if ($start < $hour['end'] && $end > $hour['begin'])
+				$matches[] = $index;
+		}
+
+		return $matches;
+	}
+
+	/**
+	 * Renders one printable week.
+	 */
+	private function renderWeek(array $week, array $raster, $type, array $filters)
+	{
+		$weekdayNames = array(
+			1 => 'Montag',
+			2 => 'Dienstag',
+			3 => 'Mittwoch',
+			4 => 'Donnerstag',
+			5 => 'Freitag',
+			6 => 'Samstag',
+			7 => 'Sonntag'
+		);
+		$html = '<div style="padding-top: 10px;" class="page-break-after">';
+		$html .= '<table class="stdplan" width="100%" border="0" cellpadding="1" cellspacing="1" name="Stundenplantabelle" align="center">';
+		$html .= '<thead><tr>';
+		$html .= '<th align="right">Stunde&nbsp;<br>Beginn&nbsp;<br>Ende&nbsp;</th>';
+
+		foreach ($raster as $hour)
+		{
+			$html .= '<th><div align="center">'.$this->escape($hour['number']).'<br>';
+			$html .= '&nbsp;'.$this->escape($hour['begin_label']).'&nbsp;<br>';
+			$html .= '&nbsp;'.$this->escape($hour['end_label']).'&nbsp;</div></th>';
+		}
+
+		$html .= '</tr></thead><tbody>';
+
+		foreach ($week['days'] as $day)
+		{
+			$weekday = (int)$day['date']->format('N');
+			$html .= '<tr><td>'.$weekdayNames[$weekday].'<br>';
+			$html .= $day['date']->format('j.M Y').'<br></td>';
+
+			foreach ($day['cells'] as $slotIndex => $events)
+			{
+				if (empty($events))
+				{
+					$html .= '<td valign="center" align="center"></td>';
+					continue;
+				}
+
+				$html .= '<td nowrap valign="top" align="center">';
+
+				$hourNumber = isset($raster[$slotIndex]['number'])
+					? $raster[$slotIndex]['number']
+					: null;
+				foreach ($events as $event)
+					$html .= $this->renderEvent(
+						$event,
+						$type,
+						false,
+						$filters,
+						$hourNumber
+					);
+				$html .= '</td>';
+			}
+
+			$html .= '</tr>';
+		}
+
+		$html .= '</tbody></table>';
+
+		if (!empty($week['outside']))
+		{
+			$html .= '<div class="outside"><h3>Termine außerhalb des Stundenrasters</h3>';
+			foreach ($week['outside'] as $event)
+			{
+				$html .= $this->renderEvent(
+					$event,
+					$type,
+					true,
+					$filters,
+					$this->getNearestHourNumber($event, $raster)
+				);
+			}
+			$html .= '</div>';
+		}
+
+		if ($type === 'ort')
+			$html .= $this->renderRoomReservationNotice($week, $filters);
+
+		return $html.'</div>';
+	}
+
+	/**
+	 * Renders the room reservation warning used by the legacy weekly plan.
+	 */
+	private function renderRoomReservationNotice(array $week, array $filters)
+	{
+		$requiredFilters = array(
+			'room_reservable',
+			'room_reservation_permitted',
+			'room_reservation_start',
+			'room_reservation_end',
+			'room_not_reservable_message',
+			'room_reservation_restricted_message'
+		);
+		foreach ($requiredFilters as $filter)
+		{
+			if (!array_key_exists($filter, $filters))
+				return '';
+		}
+
+		$weekEnd = (clone $week['end'])->modify('+1 day')->getTimestamp();
+		$canReserveInWeek = $filters['room_reservation_permitted']
+			&& $filters['room_reservable']
+			&& $weekEnd >= time()
+			&& $weekEnd >= $filters['room_reservation_start']
+			&& $week['start']->getTimestamp() <= $filters['room_reservation_end'];
+
+		if ($canReserveInWeek)
+			return '';
+
+		$message = $filters['room_reservation_permitted']
+			&& !$filters['room_reservable']
+			? $filters['room_not_reservable_message']
+			: $filters['room_reservation_restricted_message'];
+
+		return '<table><tr><td><br><span style="color: orange">'
+			.$this->escape($message)
+			.'</span></td></tr></table>';
+	}
+
+	/**
+	 * Renders an escaped event card.
+	 */
+	private function renderEvent(
+		array $event,
+		$type,
+		$showDate,
+		array $filters,
+		$hourNumber
+	) {
+		$style = $event['color'] !== ''
+			? ' style="background-color: #'.$event['color'].'; margin-bottom: 3px;"'
+			: '';
+		$html = '<div align="center"'.$style.'>';
+		$detailUrl = $this->buildDetailUrl($event, $type, $filters, $hourNumber);
+
+		$linkTitle = $this->escape($event['note']);
+		$infoTagTitle = isset($event['infoTagTitle']) && $event['infoTagTitle'] !== ''
+			? $event['infoTagTitle']
+			: null;
+		if ($infoTagTitle !== null)
+		{
+			$linkTitle = $this->escape($infoTagTitle);
+		}
+
+		$html .= '<a class="stpl_detail" title="'.$linkTitle.'"';
+		if ($detailUrl !== null)
+		{
+			$onclick = 'window.open('
+				.$this->encodeJavaScriptString($detailUrl).','
+				.$this->encodeJavaScriptString(self::DETAIL_WINDOW_NAME).','
+				.$this->encodeJavaScriptString(self::DETAIL_WINDOW_OPTIONS)
+				.');return false;';
+			$html .= ' href="'.$this->escape($detailUrl).'"';
+			$html .= ' target="'.self::DETAIL_WINDOW_NAME.'"';
+			$html .= ' onclick="'.$this->escape($onclick).'"';
+		}
+		$html .= '>';
+
+		if ($showDate)
+			$html .= $event['start']->format('d.m.Y H:i').'–'.$event['end']->format('H:i').'<br>';
+
+		$html .= $this->escape($event['title']);
+
+		if (($type === 'lektor' || $type === 'verband' || $type === 'ort')
+			&& $event['groups'] !== '')
+			$html .= '<br>'.$this->renderLines($event['groups']);
+		if ($type !== 'lektor' && $type !== 'ort' && $event['lecturers'] !== '')
+			$html .= '<br>'.$this->renderLines($event['lecturers']);
+		if ($type === 'ort' && $event['participants'] !== '')
+			$html .= '<br>'.$this->renderLines($event['participants']);
+		if ($event['location'] !== '' && $type !== 'ort')
+			$html .= '<br>'.$this->escape($event['location']);
+		if ($event['note'] !== '' && $this->shouldShowNotes())
+			$html .= '<br>'.$this->escape($event['note']);
+
+		return $html.'</a></div>';
+	}
+
+	/**
+	 * Builds the URL consumed by the legacy timetable detail popup.
+	 */
+	private function buildDetailUrl(array $event, $type, array $filters, $hourNumber)
+	{
+		if ($hourNumber === null || !preg_match('/^\d+$/', (string)$hourNumber))
+			return null;
+
+		$uid = isset($filters['uid']) && $filters['uid'] !== ''
+			? $filters['uid']
+			: getAuthUID();
+		$room = $type === 'ort' && isset($filters['ort_kurzbz'])
+			? $filters['ort_kurzbz']
+			: $event['detail_ort_kurzbz'];
+		$parameters = array(
+			'type' => $type,
+			'datum' => $event['date'],
+			'stunde' => (string)$hourNumber,
+			'pers_uid' => $uid,
+			'stg_kz' => isset($filters['stg_kz']) ? $filters['stg_kz'] : '',
+			'sem' => isset($filters['sem']) ? $filters['sem'] : '',
+			'ver' => isset($filters['ver']) && $filters['ver'] !== null
+				? $filters['ver']
+				: '',
+			'grp' => isset($filters['grp']) && $filters['grp'] !== null
+				? $filters['grp']
+				: '',
+			'ort_kurzbz' => $room
+		);
+
+		return $this->getAppRoot().'index.ci.php/lvplan/html/detail?'
+			.http_build_query($parameters, '', '&', PHP_QUERY_RFC3986);
+	}
+
+	/**
+	 * Returns the hour whose configured start is closest to the event start.
+	 */
+	private function getNearestHourNumber(array $event, array $raster)
+	{
+		if (empty($raster))
+			return null;
+
+		$eventStart = $this->timeToSeconds($event['start']->format('H:i:s'));
+		if ($eventStart === null)
+			return null;
+
+		$nearestNumber = null;
+		$nearestDistance = null;
+		foreach ($raster as $hour)
+		{
+			$distance = abs($eventStart - $hour['begin']);
+			if ($nearestDistance === null || $distance < $nearestDistance)
+			{
+				$nearestDistance = $distance;
+				$nearestNumber = $hour['number'];
+			}
+		}
+
+		return $nearestNumber;
+	}
+
+	private function getDocumentTitle($type, array $filters)
+	{
+		//return 'Kalender';
+		if ($type === 'ort')
+		{
+			$title = 'Ort: '.$filters['ort_kurzbz'];
+			if (isset($filters['bezeichnung']) && $filters['bezeichnung'] !== '')
+				$title .= ' - '.$filters['bezeichnung'];
+			return $title;
+		}
+
+		if ($type === 'verband')
+		{
+			$studiengang = isset($filters['stg_kurzbz'])
+				&& $filters['stg_kurzbz'] !== ''
+				? $filters['stg_kurzbz']
+				: $filters['stg_kz'];
+			$title = 'Lehrverband: '.$studiengang.'-'.$filters['sem'];
+
+			if (isset($filters['ver']) && $filters['ver'] !== null)
+				$title .= $filters['ver'];
+			else 
+				$title .= 0;
+			
+			if (isset($filters['grp']) && $filters['grp'] !== null)
+				$title .= $filters['grp'];
+			else 
+				$title .= 0;
+			
+			return $title;
+		}
+
+		if ($type === 'lektor')
+		{
+			$name = isset($filters['full_name']) && $filters['full_name'] !== ''
+				? $filters['full_name']
+				: $filters['uid'];
+			return 'Lektor: '.$name;
+		}
+
+		return 'Student: '.$filters['uid'];
+	}
+
+	private function getEventDateTime($event, $isoProperty, $dateProperty, $timeProperty)
+	{
+		$value = isset($event->{$isoProperty}) ? $event->{$isoProperty} : null;
+		if (($value === null || $value === '')
+			&& isset($event->{$dateProperty})
+			&& isset($event->{$timeProperty}))
+		{
+			$value = $event->{$dateProperty}.' '.$event->{$timeProperty};
+		}
+
+		if ($value === null || $value === '')
+			return null;
+
+		try
+		{
+			$date = is_numeric($value) ? new DateTime('@'.(int)$value) : new DateTime($value);
+			$date->setTimezone(new DateTimeZone(self::TIMEZONE));
+			return $date;
+		}
+		catch (Exception $e)
+		{
+			return null;
+		}
+	}
+
+	private function getLecturers($event)
+	{
+		$values = array();
+		if (!isset($event->lektor) || !is_array($event->lektor))
+			return '';
+
+		foreach ($event->lektor as $lecturer)
+		{
+			$value = $this->getNestedValue($lecturer, array('kurzbz', 'mitarbeiter_uid'));
+			if ($value !== '')
+				$values[] = $value;
+		}
+
+		sort($values, SORT_STRING | SORT_FLAG_CASE);
+
+		return implode(', ', array_unique($values));
+	}
+
+	private function getParticipants($event)
+	{
+		$values = array();
+		if (!isset($event->teilnehmer_person) || !is_array($event->teilnehmer_person))
+			return '';
+
+		foreach ($event->teilnehmer_person as $participant)
+		{
+			$value = $this->getNestedValue($participant, array('kurzbz', 'student_uid'));
+			if ($value !== '')
+				$values[] = $value;
+		}
+
+		sort($values, SORT_STRING | SORT_FLAG_CASE);
+
+		return implode(', ', array_unique($values));
+	}
+
+	private function getGroups($event)
+	{
+		$values = array();
+		foreach (array('teilnehmer_gruppe', 'gruppe') as $property)
+		{
+			if (!isset($event->{$property}) || !is_array($event->{$property}))
+				continue;
+
+			foreach ($event->{$property} as $group)
+			{
+				$value = $this->getNestedValue(
+					$group,
+					array('bezeichnung', 'kuerzel', 'gruppe_kurzbz')
+				);
+				if ($value !== '')
+					$values[] = $value;
+			}
+		}
+
+		sort($values, SORT_STRING | SORT_FLAG_CASE);
+		
+		return implode(', ', array_unique($values));
+	}
+
+	private function getEventNote($event, $isReservation)
+	{
+		$note = $this->getScalar($event, 'beschreibung');
+		if ($note === '')
+			$note = $this->getScalar($event, 'anmerkung');
+		if ($note === '' && !$isReservation)
+			$note = $this->getScalar($event, 'titel');
+		return $note;
+	}
+
+	private function getColor($event)
+	{
+		$color = ltrim($this->getScalar($event, 'farbe'), '#');
+		return preg_match('/^[0-9a-fA-F]{6}$/', $color) ? strtoupper($color) : '';
+	}
+
+	private function getNestedValue($value, array $properties)
+	{
+		foreach ($properties as $property)
+		{
+			if (is_array($value) && isset($value[$property]))
+				return (string)$value[$property];
+			if (is_object($value) && isset($value->{$property}))
+				return (string)$value->{$property};
+		}
+
+		return is_scalar($value) ? (string)$value : '';
+	}
+
+	private function getScalar($event, $property)
+	{
+		return isset($event->{$property}) && is_scalar($event->{$property})
+			? (string)$event->{$property}
+			: '';
+	}
+
+	private function getFirstScalarValue($value)
+	{
+		if (is_scalar($value))
+			return (string)$value;
+		if (!is_array($value))
+			return '';
+
+		foreach ($value as $item)
+		{
+			if (is_scalar($item) && (string)$item !== '')
+				return (string)$item;
+		}
+
+		return '';
+	}
+
+	private function joinValue($value, $separator = ', ')
+	{
+		if (!is_array($value))
+			return is_scalar($value) ? (string)$value : '';
+
+		$values = array();
+		foreach ($value as $item)
+		{
+			if (is_scalar($item) && (string)$item !== '')
+				$values[] = (string)$item;
+		}
+
+		return implode($separator, array_unique($values));
+	}
+
+	private function timeToSeconds($time)
+	{
+		if (!preg_match('/^(\d{1,2}):(\d{2})(?::(\d{2}))?$/', (string)$time, $matches))
+			return null;
+
+		$hours = (int)$matches[1];
+		$minutes = (int)$matches[2];
+		$seconds = isset($matches[3]) ? (int)$matches[3] : 0;
+
+		if ($hours > 23 || $minutes > 59 || $seconds > 59)
+			return null;
+
+		return $hours * 3600 + $minutes * 60 + $seconds;
+	}
+
+	private function formatLocalDate($timestamp)
+	{
+		$date = new DateTime('@'.(int)$timestamp);
+		$date->setTimezone(new DateTimeZone(self::TIMEZONE));
+		return $date->format('Y-m-d');
+	}
+
+	private function escape($value)
+	{
+		return htmlspecialchars((string)$value, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8');
+	}
+
+	private function encodeJavaScriptString($value)
+	{
+		return json_encode(
+			(string)$value,
+			JSON_HEX_TAG | JSON_HEX_AMP | JSON_HEX_APOS | JSON_HEX_QUOT
+		);
+	}
+
+	private function renderLines($value)
+	{
+		$lines = array_map('trim', explode(', ', (string)$value));
+		$lines = array_filter($lines, function ($line) {
+			return $line !== '';
+		});
+		$lines = array_map(array($this, 'escape'), $lines);
+
+		return implode('<br>', $lines);
+	}
+
+	private function getAppRoot()
+	{
+		return defined('APP_ROOT') ? rtrim(APP_ROOT, '/').'/' : '/';
+	}
+
+	private function shouldShowNotes()
+	{
+		return !defined('LVPLAN_ANMERKUNG_ANZEIGEN') || LVPLAN_ANMERKUNG_ANZEIGEN;
+	}
+
+	private function getStyles()
+	{
+		return '@page{size:landscape;margin:10mm}'
+			.'.outside{margin-top:10px}.outside>div{display:inline-block;vertical-align:top;min-width:180px;margin:0 3px 3px 0;padding:3px}'
+			.'@media print{.outside>div{break-inside:avoid}}';
+	}
+
+	private function getOldTempusNoticeTag($event)
+	{
+		if (empty($event->tags)) return null;
+
+		$parsedTags = $event->tags;
+		if (!is_array($event->tags)) 
+			$parsedTags = json_decode($event->tags, true);
+
+		foreach ($parsedTags as $tag)
+		{
+			if (isset($tag['typ_kurzbz']) && $tag['typ_kurzbz'] === 'hinweis' && isset($tag['insertvon']) && $tag['insertvon'] === 'oldToNewTempusMigration')
+				return $tag;
+		}
+
+		return null;
+	}
+}

application/libraries/LvPlanICALLib.php

@@ -0,0 +1,449 @@
+<?php
+
+if (!defined('BASEPATH'))
+	exit('No direct script access allowed');
+
+class LvPlanICALLib
+{
+	const CATEGORY_TIMETABLE = 'Stundenplan';
+	const CATEGORY_EXAM = 'StundenplanExam';
+	const CATEGORY_REMOTE = 'StundenplanRemote';
+
+	const ICON_EXAM = '📝';
+	const ICON_REMOTE = '📍';
+	const ICON_RESERVATION = '📌';
+
+	private $ci;
+
+	public function __construct()
+	{
+		$this->ci =& get_instance();
+	}
+
+	/**
+	 * Builds complete iCalendar content for a user.
+	 *
+	 * If no type is given, the user's role is inferred for subscription feeds.
+	 * Downloads pass the type explicitly so dual-role users receive the selected
+	 * timetable.
+	 *
+	 * @param string $uid User UID.
+	 * @param int $begin First included date as Unix timestamp.
+	 * @param int $ende Last included date as Unix timestamp.
+	 * @param string|null $type Timetable type (student, lektor, ort or verband).
+	 * @param int $version iCalendar major version (1 or 2).
+	 * @param string|null $ortKurzbz Room identifier for room plans.
+	 * @param array|null $verbandFilters Lehrverband filters.
+	 * @param string|null $calendarName Display name for calendar subscriptions.
+	 * @return string
+	 */
+	public function getContent(
+		$uid,
+		$begin,
+		$ende,
+		$type = null,
+		$version = 2,
+		$ortKurzbz = null,
+		$verbandFilters = null,
+		$calendarName = null
+	) {
+		if (!in_array($version, array(1, 2), true))
+			throw new InvalidArgumentException('Unsupported iCalendar version');
+		if ($type !== null && !in_array($type, array('student', 'lektor', 'ort', 'verband'), true))
+			throw new InvalidArgumentException('Unsupported timetable type');
+		if ($type === 'ort' && (!is_string($ortKurzbz) || $ortKurzbz === ''))
+			throw new InvalidArgumentException('Missing room timetable filter');
+		if ($type === 'verband'
+			&& (!is_array($verbandFilters)
+				|| !array_key_exists('stg_kz', $verbandFilters)
+				|| !array_key_exists('sem', $verbandFilters)))
+		{
+			throw new InvalidArgumentException('Missing Lehrverband timetable filters');
+		}
+
+		$this->ci->load->library('KalenderLib', array('uid' => $uid));
+
+		if ($type === null)
+		{
+			$this->ci->load->model('ressource/Mitarbeiter_model', 'MitarbeiterModel');
+			$isLecturerResult = $this->ci->MitarbeiterModel->isMitarbeiter($uid);
+			$isLecturer = isSuccess($isLecturerResult) && getData($isLecturerResult) === true;
+		}
+		else
+		{
+			$isLecturer = $type === 'lektor';
+		}
+
+		$startDate = date('Y-m-d', $begin);
+		// KalenderLib uses an exclusive end date; $ende is inclusive here.
+		$endDate = date('Y-m-d', strtotime('+1 day', $ende));
+
+		if ($type === 'verband')
+		{
+			$events = $this->ci->kalenderlib->getPlanForVerband(
+				$startDate,
+				$endDate,
+				$verbandFilters['stg_kz'],
+				$verbandFilters['sem'],
+				isset($verbandFilters['ver']) ? $verbandFilters['ver'] : null,
+				isset($verbandFilters['grp']) ? $verbandFilters['grp'] : null
+			);
+		}
+		elseif ($type === 'ort')
+		{
+			$events = $this->ci->kalenderlib
+				->getPlanForRoom($startDate, $endDate, $ortKurzbz);
+		}
+		elseif ($isLecturer)
+		{
+			$events = $this->ci->kalenderlib
+				->getPlanForLecturerByLecturer($startDate, $endDate, $uid);
+		}
+		else
+		{
+			$events = $this->ci->kalenderlib
+				->getPlanForStudentByStudent($startDate, $endDate, $uid);
+		}
+
+		if (!is_array($events))
+			$events = array();
+
+		$content = $this->buildCalendarHeader($version, $calendarName);
+
+		foreach ($events as $event)
+			$content .= $this->buildEvent($event);
+
+		return $content.$this->buildICalLine('END', 'VCALENDAR');
+	}
+
+	private function buildCalendarHeader($version, $calendarName = null)
+	{
+		$productId = defined('CAMPUS_NAME') && CAMPUS_NAME !== ''
+			? CAMPUS_NAME
+			: 'FHComplete';
+
+		$header = $this->buildICalLine('BEGIN', 'VCALENDAR')
+			.$this->buildICalLine('VERSION', $version.'.0')
+			.$this->buildICalTextLine('PRODID', $productId);
+
+		if (is_string($calendarName) && $calendarName !== '')
+		{
+			$header .= $this->buildICalTextLine('NAME', $calendarName);
+			$header .= $this->buildICalTextLine('X-WR-CALNAME', $calendarName);
+		}
+
+		return $header
+			.$this->buildICalLine('BEGIN', 'VTIMEZONE')
+			.$this->buildICalLine('TZID', 'Europe/Vienna')
+			.$this->buildICalLine('BEGIN', 'DAYLIGHT')
+			.$this->buildICalLine('TZOFFSETFROM', '+0100')
+			.$this->buildICalLine('RRULE', 'FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU')
+			.$this->buildICalLine('DTSTART', '19810329T020000')
+			.$this->buildICalLine('TZNAME', 'GMT+02:00')
+			.$this->buildICalLine('TZOFFSETTO', '+0200')
+			.$this->buildICalLine('END', 'DAYLIGHT')
+			.$this->buildICalLine('BEGIN', 'STANDARD')
+			.$this->buildICalLine('TZOFFSETFROM', '+0200')
+			.$this->buildICalLine('RRULE', 'FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU')
+			.$this->buildICalLine('DTSTART', '19961027T030000')
+			.$this->buildICalLine('TZNAME', 'GMT+01:00')
+			.$this->buildICalLine('TZOFFSETTO', '+0100')
+			.$this->buildICalLine('END', 'STANDARD')
+			.$this->buildICalLine('END', 'VTIMEZONE');
+	}
+
+	private function buildEvent($event)
+	{
+		$isReservation = $event->type === 'reservierung';
+
+		$summaryIcon = '';
+		$summary = $this->getSummary($event);
+		$description = $this->getDescription($event);
+
+		$category = self::CATEGORY_TIMETABLE;
+		if ($event->type === 'lehreinheit')
+		{
+			if ($event->lehrform === 'EXAM')
+			{
+				$summaryIcon = self::ICON_EXAM;
+				$category = self::CATEGORY_EXAM;
+			}
+			elseif (!isset($event->ko_ort_kurzbz) || $event->ko_ort_kurzbz === '')
+			{
+				$summaryIcon = self::ICON_REMOTE;
+				$category = self::CATEGORY_REMOTE;
+			}
+		}
+		elseif ($event->type === 'reservierung'
+			&& (!isset($event->ko_ort_kurzbz) || $event->ko_ort_kurzbz === ''))
+		{
+			$summaryIcon = self::ICON_RESERVATION;
+			$category = self::CATEGORY_REMOTE;
+		}
+
+		if ($summaryIcon !== '')
+			$summary = $summaryIcon.' '.$summary;
+
+		$startDate = $this->formatICalLocalDateTime($event->isostart);
+		$endDate = $this->formatICalLocalDateTime($event->isoend);
+		$lastModified = $this->formatICalUtcDateTime(
+			isset($event->updateamum) ? $event->updateamum : null
+		);
+		$dtStamp = $lastModified ?: $this->formatICalUtcDateTime($event->isostart);
+
+		if ($dtStamp === null)
+			$dtStamp = '19700101T000000Z';
+
+		$fragment = $this->buildICalLine('BEGIN', 'VEVENT')
+			.$this->buildICalTextLine('UID', $event->eindeutige_kalender_gruppen_id)
+			.$this->buildICalLine('SEQUENCE', (int)$event->kalender_id)
+			.$this->buildICalTextLine('SUMMARY', $summary)
+			.$this->buildICalTextLine('DESCRIPTION', $description)
+			.$this->buildICalTextLine('LOCATION', $this->joinValues($event->ort_kurzbz))
+			.$this->buildICalTextLine('CATEGORIES', $category)
+			.$this->buildICalLine('DTSTART', $startDate, array('TZID' => 'Europe/Vienna'))
+			.$this->buildICalLine('DTEND', $endDate, array('TZID' => 'Europe/Vienna'));
+
+		if ($lastModified !== null)
+			$fragment .= $this->buildICalLine('LAST-MODIFIED', $lastModified);
+
+		return $fragment
+			.$this->buildICalLine('DTSTAMP', $dtStamp)
+			.$this->buildICalLine('END', 'VEVENT');
+	}
+
+	/**
+	 * @param object $event Calendar event.
+	 * @return string Event summary.
+	 */
+	private function getSummary($event)
+	{
+		if (isset($event->type) && $event->type === 'reservierung')
+		{
+			return isset($event->titel) ? $event->titel : '';
+		}
+
+		$subject = isset($event->lehrfach_bez) ? $event->lehrfach_bez : '';
+
+		if ($subject === '')
+			$subject = $this->joinValues(isset($event->topic) ? $event->topic : array());
+
+		return $subject;
+	}
+
+	/**
+	 * @param object $event Calendar event.
+	 * @return string Event description.
+	 */
+	private function getDescription($event)
+	{
+		$isReservation = isset($event->type) && $event->type === 'reservierung';
+		$parts = array();
+		$subject = $isReservation && isset($event->lehrfach_bez)
+			? $event->lehrfach_bez
+			: '';
+
+		if ($subject !== '')
+			$parts[] = $this->ci->p->t('global', 'lehrfach').': '.$subject;
+
+		if ($isReservation)
+		{
+			$participants = $this->getParticipants($event);
+
+			if ($participants !== '')
+				$parts[] = $this->ci->p->t('ui', 'teilnehmende').': '.$participants;
+		}
+		else
+		{
+			$lecturers = $this->getLecturers($event);
+
+			if ($lecturers !== '')
+				$parts[] = $this->ci->p->t('lehre', 'lektorInnen').': '.$lecturers;
+		}
+
+		$groups = $this->getGroups($event);
+		if ($groups !== '')
+			$parts[] = $this->ci->p->t('global', 'gruppen').': '.$groups;
+
+		$description = isset($event->beschreibung) ? $event->beschreibung : '';
+		if ($description !== '')
+			$parts[] = $this->ci->p->t('global', 'beschreibung').': '.$description;
+
+		return implode("\r\n", $parts);
+	}
+
+	private function joinValues($value)
+	{
+		return is_array($value) ? implode(', ', $value) : (string)$value;
+	}
+
+	private function buildICalTextLine($name, $value, array $parameters = array())
+	{
+		return $this->buildICalLine($name, $this->escapeICalText($value), $parameters);
+	}
+
+	private function buildICalLine($name, $value, array $parameters = array())
+	{
+		$line = strtoupper($name);
+
+		foreach ($parameters as $parameterName => $parameterValue)
+		{
+			$parameterValues = is_array($parameterValue) ? $parameterValue : array($parameterValue);
+			$escapedValues = array();
+
+			foreach ($parameterValues as $singleParameterValue)
+				$escapedValues[] = $this->escapeICalParameterValue($singleParameterValue);
+
+			$line .= ';'.strtoupper($parameterName).'='.implode(',', $escapedValues);
+		}
+
+		return $this->foldICalLine($line.':'.(string)$value);
+	}
+
+	private function foldICalLine($line)
+	{
+		$line = (string)$line;
+		$folded = '';
+
+		while (strlen($line) > 75)
+		{
+			$part = mb_strcut($line, 0, 75, 'UTF-8');
+			$folded .= $part."\r\n";
+			$line = ' '.mb_strcut($line, strlen($part), strlen($line) - strlen($part), 'UTF-8');
+		}
+
+		return $folded.$line."\r\n";
+	}
+
+	private function escapeICalText($value)
+	{
+		$value = (string)$value;
+		$value = str_replace('\\', '\\\\', $value);
+		$value = str_replace(array("\r\n", "\r", "\n"), '\\n', $value);
+		return str_replace(array(';', ','), array('\\;', '\\,'), $value);
+	}
+
+	private function escapeICalParameterValue($value)
+	{
+		$value = (string)$value;
+		$value = str_replace(array('\\', '"', "\r", "\n"), array('\\\\', '\\"', '', ''), $value);
+
+		if (preg_match('/[;:,]/', $value))
+			return '"'.$value.'"';
+
+		return $value;
+	}
+
+	private function formatICalLocalDateTime($dateTime)
+	{
+		$dateTime = $this->createDateTime($dateTime);
+		if ($dateTime === null)
+			return null;
+
+		$dateTime->setTimezone(new DateTimeZone('Europe/Vienna'));
+		return $dateTime->format('Ymd\THis');
+	}
+
+	private function formatICalUtcDateTime($dateTime)
+	{
+		$dateTime = $this->createDateTime($dateTime);
+		if ($dateTime === null)
+			return null;
+
+		$dateTime->setTimezone(new DateTimeZone('UTC'));
+		return $dateTime->format('Ymd\THis\Z');
+	}
+
+	private function createDateTime($dateTime)
+	{
+		if ($dateTime instanceof DateTime)
+			return clone $dateTime;
+
+		if ($dateTime === null || $dateTime === '')
+			return null;
+
+		try
+		{
+			if (is_numeric($dateTime))
+				return new DateTime('@'.(int)$dateTime);
+
+			return new DateTime($dateTime);
+		}
+		catch (Exception $e)
+		{
+			return null;
+		}
+	}
+
+		/**
+	 * @param object $event Calendar event.
+	 * @return string Participant group labels.
+	 */
+	private function getGroups($event)
+	{
+		$groups = array();
+
+		if (isset($event->gruppe) && is_array($event->gruppe))
+		{
+			foreach ($event->gruppe as $group)
+			{
+				if (isset($group['bezeichnung']) && $group['bezeichnung'] !== '')
+					$groups[] = $group['bezeichnung'];
+			}
+		}
+
+		if (isset($event->teilnehmer_gruppe) && is_array($event->teilnehmer_gruppe))
+		{
+			foreach ($event->teilnehmer_gruppe as $group)
+			{
+				if (isset($group['gruppe_kurzbz']) && $group['gruppe_kurzbz'] !== '')
+					$groups[] = $group['gruppe_kurzbz'];
+			}
+		}
+
+		sort($groups, SORT_NATURAL | SORT_FLAG_CASE);
+
+		return implode(',', array_unique($groups));
+	}
+
+	/**
+	 * @param object $event Calendar event.
+	 * @return string Lecturer abbreviations.
+	 */
+	private function getLecturers($event)
+	{
+		$lecturers = array();
+
+		if (isset($event->lektor) && is_array($event->lektor))
+		{
+			foreach ($event->lektor as $lecturer)
+			{
+				if (isset($lecturer['kurzbz']) && $lecturer['kurzbz'] !== '')
+					$lecturers[] = $lecturer['kurzbz'];
+			}
+		}
+
+		sort($lecturers, SORT_NATURAL | SORT_FLAG_CASE);
+
+		return implode(' / ', array_unique($lecturers));
+	}
+
+	private function getParticipants($event)
+	{
+		$values = array();
+		if (!isset($event->teilnehmer_person) || !is_array($event->teilnehmer_person))
+			return '';
+
+		foreach ($event->teilnehmer_person as $participant)
+		{
+			$value = $participant['vorname'] . ' ' . $participant['nachname'];
+
+			if ($value !== '')
+				$values[] = $value;
+		}
+
+		sort($values, SORT_NATURAL | SORT_FLAG_CASE);
+
+		return implode(', ', array_unique($values));
+	}
+}

application/libraries/RaumvorschlagLib.php

@@ -0,0 +1,283 @@
+<?php
+
+if (! defined("BASEPATH")) exit("No direct script access allowed");
+
+use CI3_Events as Events;
+
+class RaumvorschlagLib
+{
+	private $_ci;
+	private $_uid;
+
+	public function __construct($params)
+	{
+		$this->_ci =& get_instance();
+
+		if (isset($params['uid']) && !isEmptyString($params['uid'])){
+			$this->_uid = $params['uid'];
+		} else {
+			show_error('uid of logged user not passed!');
+		}
+
+		$this->_ci->load->model('ressource/Kalender_model', 'KalenderModel');
+		$this->_ci->load->model('ressource/Kalender_Lehreinheit_model', 'KalenderLehreinheitModel');
+		$this->_ci->load->model('ressource/Kalender_Event_model', 'KalenderEventModel');
+		$this->_ci->load->model('ressource/Kalender_Event_Teilnehmer_model', 'KalenderEventTeilnehmerModel');
+		$this->_ci->load->model('ressource/Kalender_Ort_model', 'KalenderOrtModel');
+		$this->_ci->load->model('education/Lehreinheit_model', 'LehreinheitModel');
+		$this->_ci->load->model('education/Lehrveranstaltung_model', 'LehrveranstaltungModel');
+		$this->_ci->load->model('education/LehreinheitMitarbeiter_model', 'LehreinheitMitarbeiterModel');
+		$this->_ci->load->model('ressource/Ort_model', 'OrtModel');
+		$this->_ci->load->model('organisation/gruppe_model', 'GruppeModel');
+		$this->_ci->load->model('organisation/Lehrverband_model', 'LehrverbandModel');
+
+		$this->_ci->load->model('education/Lehreinheitgruppe_model', 'LehreinheitgruppeModel');
+		$this->_ci->load->model('education/Lehreinheitgruppe_model', 'LehreinheitgruppeModel');
+
+		$this->_ci->load->library('CollisionChecker', ["uid" => getAuthUID()]);
+		$this->_ci->load->library('KalenderLib', ["uid" => getAuthUID()]);
+		$this->_ci->load->library('PhrasesLib', array('ui'));
+	}
+
+
+	public function getVorschlaege($kalender_id)
+	{
+		$event = $this->_ci->kalenderlib->getByKalenderId($kalender_id);
+		$event = $event[0];
+
+		$lektor_uids = array_column($event->lektor, 'mitarbeiter_uid');
+		$gruppen_kurzbz = array_values(array_filter(array_column($event->gruppe, 'gruppe_kurzbz')));
+
+		$lehrverband_gruppen = array_values(array_filter($event->gruppe, function($gruppe)
+		{
+			return empty($gruppe['gruppe_kurzbz']);
+		}));
+
+		$tages_events = $this->_ci->kalenderlib->getForRaumvorschlag(
+			$event->datum,
+			$event->datum,
+			$lektor_uids,
+			$gruppen_kurzbz,
+			$lehrverband_gruppen
+		);
+
+		$lektor_davor = $this->_getEventDavor($tages_events, $event->isostart, $lektor_uids, 'lektor');
+		$gruppen_davor = $this->_getEventDavor($tages_events, $event->isostart, $gruppen_kurzbz, 'gruppe');
+
+		$lektor_davor_ort = $lektor_davor ? $this->_getOrtDetails($lektor_davor->ort_kurzbz) : null;
+		$gruppen_davor_ort = $gruppen_davor ? $this->_getOrtDetails($gruppen_davor->ort_kurzbz) : null;
+
+		$kandidaten = $this->_getRaumkandidaten($event);
+		if (empty($kandidaten)) return [];
+
+
+		$ratings = [];
+		foreach ($kandidaten as $raum)
+		{
+			$rating = ['ort_kurzbz' => $raum->ort_kurzbz, 'score' => 100, 'details' => []];
+			$this->_rateLektor($rating, $raum, $lektor_davor_ort);
+			$this->_rateGruppen($rating, $raum, $gruppen_davor_ort);
+
+			Events::trigger('room_rating',
+				function & () use (&$rating) {
+					return $rating;
+				},
+				$raum,
+				$event
+			);
+			$ratings[] = $rating;
+		}
+
+		usort($ratings, function($a, $b)
+		{
+			return $b['score'] - $a['score'];
+		});
+
+		return $ratings;
+
+	}
+
+	private function _getOrtDetails($ort_kurzbz_array)
+	{
+		$ort_kurzbz_array = (array) $ort_kurzbz_array;
+		if (empty($ort_kurzbz_array)) return [];
+		$this->_ci->OrtModel->addSelect('ort_kurzbz, stockwerk, standort_id');
+		$this->_ci->OrtModel->db->where_in('ort_kurzbz', $ort_kurzbz_array);
+		$result = $this->_ci->OrtModel->load();
+
+		return hasData($result) ? getData($result) : [];
+	}
+
+	private function _rateLektor(&$rating, $raum, $lektor_davor_orte)
+	{
+		if (empty($lektor_davor_orte)) return;
+
+		foreach ($lektor_davor_orte as $ort)
+		{
+			if ($ort->ort_kurzbz === $raum->ort_kurzbz)
+			{
+				$rating['score'] += 20;
+				$rating['details'][] = '+20 ' . $this->_ci->phraseslib->t('ui', 'lecturer_already_here');
+				return;
+			}
+		}
+
+		$gleiches_gebaeude = array_filter($lektor_davor_orte, function($ort) use ($raum)
+		{
+			return $ort->standort_id === $raum->standort_id;
+		});
+
+		if (empty($gleiches_gebaeude))
+		{
+			$rating['score'] -= 20;
+			$rating['details'][] = '-20 '. $this->_ci->phraseslib->t('ui', 'lecturer_building_change');
+			return;
+		}
+
+		$diffs = array_map(function($ort) use ($raum)
+		{
+			return abs($ort->stockwerk - $raum->stockwerk);
+		}, $gleiches_gebaeude);
+
+		$diff = min($diffs);
+
+		if ($diff > 0)
+		{
+			$rating['score'] -= $diff * 5;
+			$rating['details'][] = '-' . ($diff * 5) . ' ' . $this->_ci->phraseslib->t('ui', 'lecturer_floor_change');
+		}
+	}
+
+	private function _rateGruppen(&$rating, $raum, $gruppen_davor_orte)
+	{
+		if (empty($gruppen_davor_orte)) return;
+
+		foreach ($gruppen_davor_orte as $ort)
+		{
+			if ($ort->ort_kurzbz === $raum->ort_kurzbz)
+			{
+				$rating['score'] += 10;
+				$rating['details'][] = '+10 ' . $this->_ci->phraseslib->t('ui', 'student_already_here');
+				return;
+			}
+		}
+
+		$gleiches_gebaeude = array_filter($gruppen_davor_orte, function($ort) use ($raum)
+		{
+			return $ort->standort_id === $raum->standort_id;
+		});
+
+		if (empty($gleiches_gebaeude))
+		{
+			$rating['score'] -= 20;
+			$rating['details'][] = '-20 '. $this->_ci->phraseslib->t('ui', 'student_building_change');
+			return;
+		}
+
+		$diffs = array_map(function($ort) use ($raum)
+		{
+			return abs($ort->stockwerk - $raum->stockwerk);
+		}, $gleiches_gebaeude);
+
+		$diff = min($diffs);
+
+		if ($diff > 0)
+		{
+			$rating['score'] -= $diff * 5;
+			$rating['details'][] = '-' . ($diff * 5) . ' '. $this->_ci->phraseslib->t('ui', 'student_floor_change');
+		}
+	}
+
+	private function _getEventDavor($events, $von, $uids, $type)
+	{
+		$kandidat = null;
+
+		foreach ($events as $event)
+		{
+			if ($event->isoend > $von)
+				continue;
+
+			//Wenn zwischen zwei Events eine 30+ Minuten Pause liegt, wird das Event davor nicht berücksichtigt
+			if ((strtotime($von) - strtotime($event->isoend)) > 30 * 60)
+				continue;
+
+			if (empty($event->ort_kurzbz))
+				continue;
+
+			if ($type === 'lektor')
+				$event_uids = array_column($event->lektor, 'mitarbeiter_uid');
+			else
+				$event_uids = array_column($event->gruppe, 'gruppe_kurzbz');
+
+			if (empty(array_intersect($event_uids, $uids)))
+				continue;
+
+			if ($kandidat === null || $event->isoend > $kandidat->isoend)
+				$kandidat = $event;
+		}
+
+		return $kandidat;
+	}
+
+	private function _getRaumkandidaten($event)
+	{
+		$lehreinheit = $this->_ci->LehreinheitModel->load($event->lehreinheit_id[0]);
+		if (!hasData($lehreinheit)) return [];
+		$lehreinheit = getData($lehreinheit)[0];
+
+		$this->_ci->KalenderModel->addSelect('tbl_kalender_ort.ort_kurzbz');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_kalender_ort', 'tbl_kalender.kalender_id = tbl_kalender_ort.kalender_id');
+		$this->_ci->KalenderModel->db->where('tbl_kalender.von <', $event->isoend);
+		$this->_ci->KalenderModel->db->where('tbl_kalender.bis >', $event->isostart);
+		$this->_ci->KalenderModel->db->where_not_in('tbl_kalender.status_kurzbz', ['deleted']);
+		$this->_ci->KalenderModel->db->where('tbl_kalender_ort.ort_kurzbz IS NOT NULL', null, false);
+		$belegte = $this->_ci->KalenderModel->load();
+
+		$belegte_orte = hasData($belegte) ? array_column(getData($belegte), 'ort_kurzbz') : [];
+
+		if (empty($lehreinheit->raumtyp))
+		{
+			$raeume = $this->_getFreieRaeume(null, $belegte_orte);
+			return hasData($raeume) ? getData($raeume) : [];
+		}
+
+		$vorschlaege = [];
+
+		$raeume = $this->_getFreieRaeume($lehreinheit->raumtyp, $belegte_orte);
+		if (hasData($raeume))
+			$vorschlaege = getData($raeume);
+
+		if (count($vorschlaege) < 5 && !empty($lehreinheit->raumtypalternativ))
+		{
+			$bereits_gefunden = array_merge($belegte_orte, array_column($vorschlaege, 'ort_kurzbz'));
+			$alternativ = $this->_getFreieRaeume($lehreinheit->raumtypalternativ, $bereits_gefunden);
+
+			if (!isError($alternativ) && hasData($alternativ))
+				$vorschlaege = array_merge($vorschlaege, getData($alternativ));
+		}
+
+		return $vorschlaege;
+	}
+
+	private function _getFreieRaeume($raumtyp, $belegte_orte)
+	{
+		$this->_ci->OrtModel->addSelect('ort_kurzbz, stockwerk, standort_id');
+		$this->_ci->OrtModel->addJoin('public.tbl_ortraumtyp', 'ort_kurzbz');
+		$this->_ci->OrtModel->db->where('raumtyp_kurzbz', $raumtyp);
+		$this->_ci->OrtModel->db->where('aktiv', true);
+		$this->_ci->OrtModel->db->where("ort_kurzbz NOT LIKE '\_%'", null, false);
+
+		if (!empty($belegte_orte))
+			$this->_ci->OrtModel->db->where_not_in('ort_kurzbz', $belegte_orte);
+		$this->_ci->OrtModel->addOrder('hierarchie, ort_kurzbz');
+
+		return $this->_ci->OrtModel->load();
+	}
+
+
+
+
+
+
+
+}

application/libraries/VariableLib.php

@@ -14,9 +14,9 @@ class VariableLib
 	/**
 	 * VariableLib constructor.
 	 * Loads variable of logged in user.
-	 * @param $loggeduid
+	 * @param $params
 	 */
-	public function __construct($loggeduid)
+	public function __construct($params)
 	{
 		$this->_ci =& get_instance();
 
@@ -25,8 +25,8 @@ class VariableLib
 		$this->_ci->load->model('system/Variable_model', 'VariableModel');
 		$this->_ci->load->model('organisation/studiensemester_model', 'StudiensemesterModel');
 
-		if (isset($loggeduid['uid']) && !isEmptyString($loggeduid['uid']))
+		if (isset($params['uid']) && !isEmptyString($params['uid']))
-			$this->_setVariables($loggeduid['uid']);
+			$this->_setVariables($params['uid']);
 		else
 		{
 			show_error('uid of logged user not passed!');

application/libraries/collision/checks/LectureCollisionCheck.php

@@ -0,0 +1,266 @@
+<?php
+
+class LectureCollisionCheck implements ICollisionCheck
+{
+
+	private $_ci;
+	private $_uid;
+
+	public function __construct($params)
+	{
+		$this->_ci =& get_instance();
+		
+		if (isset($params['uid']) && !isEmptyString($params['uid'])){
+			$this->_uid = $params['uid'];
+		} else {
+			show_error('uid of logged user not passed!');
+		}
+
+		$this->_ci->load->model('ressource/Kalender_model', 'KalenderModel');
+		$this->_ci->load->model('ressource/zeitsperre_model', 'ZeitsperreModel');
+		$this->_ci->load->library('VariableLib', ['uid' => $this->_uid]);
+		$this->_ci->load->library('PhrasesLib', array('ui'));
+
+	}
+
+	public function getName()
+	{
+		return 'lecture';
+	}
+
+	public function check($data)
+	{
+		if (!isset($data->von, $data->bis, $data->kalender_id)) return [];
+
+		if ($this->_ci->variablelib->getVar('ignore_kollision') === 'true') return [];
+
+		$uids = $this->_getUids($data->kalender_id);
+
+		if (empty($uids)) return [];
+
+		$collisions = [];
+
+		$collisions = array_merge($collisions, $this->_checkLehreinheit($uids, $data));
+		$collisions = array_merge($collisions, $this->_checkReservierung($uids, $data));
+		$collisions = array_merge($collisions, $this->_checkZeitsperre($uids, $data));
+
+		return $collisions;
+	}
+
+	public function checkAll($kalender_ids)
+	{
+		if (empty($kalender_ids)) return [];
+
+		$kollisionsfreie_user = unserialize(KOLLISIONSFREIE_USER);
+		$grouped = [];
+
+		$this->_ci->KalenderModel->addSelect('DISTINCT ON (tbl_kalender.kalender_id) tbl_kalender.kalender_id');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_kalender_lehreinheit current_kalender_le', 'current_kalender_le.kalender_id = tbl_kalender.kalender_id');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_lehreinheit current_lehreinheit', 'current_lehreinheit.lehreinheit_id = current_kalender_le.lehreinheit_id');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_lehreinheitmitarbeiter current_lehreinheit_ma', 'current_lehreinheit_ma.lehreinheit_id = current_lehreinheit.lehreinheit_id');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_lehreinheitmitarbeiter other_lehreinheithreinheit_ma', 'other_lehreinheithreinheit_ma.mitarbeiter_uid = current_lehreinheit_ma.mitarbeiter_uid');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_lehreinheit other_lehreinheit', 'other_lehreinheit.lehreinheit_id = other_lehreinheithreinheit_ma.lehreinheit_id');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_kalender_lehreinheit other_kalender_le', 'other_kalender_le.lehreinheit_id = other_lehreinheit.lehreinheit_id');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_kalender other_kalender', 'other_kalender.kalender_id = other_kalender_le.kalender_id');
+
+		$this->_ci->KalenderModel->db->where('other_kalender.kalender_id != tbl_kalender.kalender_id', null, false);
+		$this->_ci->KalenderModel->db->where('other_kalender.von < tbl_kalender.bis', null, false);
+		$this->_ci->KalenderModel->db->where('other_kalender.bis > tbl_kalender.von', null, false);
+		$this->_ci->KalenderModel->db->where_not_in('other_kalender.status_kurzbz', ['archived', 'deleted', 'to_delete']);
+		$this->_ci->KalenderModel->db->where_not_in('current_lehreinheit_ma.mitarbeiter_uid', $kollisionsfreie_user);
+		$this->_ci->KalenderModel->db->where_in('tbl_kalender.kalender_id', $kalender_ids);
+		$this->_ci->KalenderModel->db->where(
+			'other_kalender.kalender_id NOT IN (SELECT vorgaenger_kalender_id FROM lehre.tbl_kalender WHERE vorgaenger_kalender_id IS NOT NULL)',
+			null, false
+		);
+		$result = $this->_ci->KalenderModel->load();
+		if (!isError($result) && hasData($result))
+		{
+			foreach (getData($result) as $row)
+			{
+				$grouped[$row->kalender_id][] = true;
+			}
+		}
+
+		$this->_ci->KalenderModel->addSelect('DISTINCT ON (tbl_kalender.kalender_id) tbl_kalender.kalender_id');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_kalender_lehreinheit current_kalender_le', 'current_kalender_le.kalender_id = tbl_kalender.kalender_id');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_lehreinheit current_lehreinheit', 'current_lehreinheit.lehreinheit_id = current_kalender_le.lehreinheit_id');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_lehreinheitmitarbeiter current_lehreinheit_ma', 'current_lehreinheit_ma.lehreinheit_id = current_lehreinheit.lehreinheit_id');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_kalender_event_teilnehmer other_t', 'other_t.uid = current_lehreinheit_ma.mitarbeiter_uid');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_kalender_event other_e', 'other_e.kalender_id = other_t.kalender_id');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_kalender other_kalender', 'other_kalender.kalender_id = other_e.kalender_id');
+
+		$this->_ci->KalenderModel->db->where('other_kalender.kalender_id != tbl_kalender.kalender_id', null, false);
+		$this->_ci->KalenderModel->db->where('other_kalender.von < tbl_kalender.bis', null, false);
+		$this->_ci->KalenderModel->db->where('other_kalender.bis > tbl_kalender.von', null, false);
+		$this->_ci->KalenderModel->db->where_not_in('other_kalender.status_kurzbz', ['archived', 'deleted', 'to_delete']);
+		$this->_ci->KalenderModel->db->where_not_in('current_lehreinheit_ma.mitarbeiter_uid', $kollisionsfreie_user);
+		$this->_ci->KalenderModel->db->where_in('tbl_kalender.kalender_id', $kalender_ids);
+		$this->_ci->KalenderModel->db->where(
+			'other_kalender.kalender_id NOT IN (SELECT vorgaenger_kalender_id FROM lehre.tbl_kalender WHERE vorgaenger_kalender_id IS NOT NULL)',
+			null, false
+		);
+		$result = $this->_ci->KalenderModel->load();
+		if (!isError($result) && hasData($result))
+		{
+			foreach (getData($result) as $row)
+			{
+				$grouped[$row->kalender_id][] = true;
+			}
+		}
+
+		$this->_ci->KalenderModel->addSelect('DISTINCT ON (tbl_kalender.kalender_id) tbl_kalender.kalender_id');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_kalender_lehreinheit current_kalender_le', 'current_kalender_le.kalender_id = tbl_kalender.kalender_id');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_lehreinheit current_lehreinheit', 'current_lehreinheit.lehreinheit_id = current_kalender_le.lehreinheit_id');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_lehreinheitmitarbeiter current_lehreinheit_ma', 'current_lehreinheit_ma.lehreinheit_id = current_lehreinheit.lehreinheit_id');
+		$this->_ci->KalenderModel->addJoin('campus.tbl_zeitsperre z',
+			"z.mitarbeiter_uid = current_lehreinheit_ma.mitarbeiter_uid 
+			AND z.zeitsperretyp_kurzbz != 'ZVerfueg'");
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_stunde vonstunde_z', 'vonstunde_z.stunde = z.vonstunde', 'LEFT');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_stunde bisstunde_z', 'bisstunde_z.stunde = z.bisstunde', 'LEFT');
+
+		$this->_ci->KalenderModel->db->where('(z.vondatum + COALESCE(vonstunde_z.beginn, \'00:00\'))::timestamp < tbl_kalender.bis', null, false);
+		$this->_ci->KalenderModel->db->where('(z.bisdatum + COALESCE(bisstunde_z.ende, \'23:59\'))::timestamp > tbl_kalender.von', null, false);
+		$this->_ci->KalenderModel->db->where_not_in('current_lehreinheit_ma.mitarbeiter_uid', $kollisionsfreie_user);
+		$this->_ci->KalenderModel->db->where_in('tbl_kalender.kalender_id', $kalender_ids);
+		$result = $this->_ci->KalenderModel->load();
+
+
+		if (!isError($result) && hasData($result))
+		{
+			foreach (getData($result) as $row)
+			{
+				$grouped[$row->kalender_id][] = true;
+			}
+		}
+
+		return $grouped;
+	}
+
+	private function _getUids($kalender_id)
+	{
+		$kollisionsfreie_user = unserialize(KOLLISIONSFREIE_USER);
+
+		$this->_ci->KalenderModel->addDistinct('mitarbeiter_uid, tbl_kalender_event_teilnehmer.uid');
+		$this->_ci->KalenderModel->addSelect('mitarbeiter_uid, tbl_kalender_event_teilnehmer.uid');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_kalender_lehreinheit', 'kalender_id', 'LEFT');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_lehreinheit', 'lehreinheit_id', 'LEFT');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_lehreinheitmitarbeiter', 'lehreinheit_id', 'LEFT');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_kalender_event', 'kalender_id', 'LEFT');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_kalender_event_teilnehmer', 'tbl_kalender_event.kalender_id = tbl_kalender_event_teilnehmer.kalender_id', 'LEFT');
+
+		$this->_ci->KalenderModel->db->group_start();
+			$this->_ci->KalenderModel->db->where_not_in('mitarbeiter_uid', $kollisionsfreie_user);
+			$this->_ci->KalenderModel->db->or_where('mitarbeiter_uid IS NULL', null, false);
+		$this->_ci->KalenderModel->db->group_end();
+
+		$result = $this->_ci->KalenderModel->loadWhere(array(
+			'tbl_kalender.kalender_id' => $kalender_id
+		));
+
+		if (isError($result) || !hasData($result)) return [];
+
+		$data = getData($result);
+		$mitarbeiter_uids = array_filter(array_column($data, 'mitarbeiter_uid'));
+		$event_teilnehmer = array_filter(array_column($data, 'uid'));
+
+		return array_unique(array_merge($mitarbeiter_uids, $event_teilnehmer));
+	}
+
+	private function _checkLehreinheit($uids, $data)
+	{
+		$kollisionsfreie_user = unserialize(KOLLISIONSFREIE_USER);
+
+		$this->_ci->KalenderModel->addDistinct('mitarbeiter_uid, tbl_kalender.von, tbl_kalender.bis');
+		$this->_ci->KalenderModel->addSelect('mitarbeiter_uid, tbl_kalender.von, tbl_kalender.bis');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_kalender_lehreinheit', 'kalender_id', 'LEFT');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_lehreinheit', 'lehreinheit_id', 'LEFT');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_lehreinheitmitarbeiter', 'lehreinheit_id', 'LEFT');
+
+		$this->_ci->KalenderModel->db->where_in('mitarbeiter_uid', $uids);
+		$this->_ci->KalenderModel->db->where('tbl_kalender.kalender_id !=', $data->kalender_id);
+		$this->_ci->KalenderModel->db->where_not_in('tbl_kalender.status_kurzbz', array('archived', 'deleted', 'to_delete'));
+		$this->_ci->KalenderModel->db->where_not_in('mitarbeiter_uid', $kollisionsfreie_user);
+		$this->_ci->KalenderModel->db->where(
+			'tbl_kalender.kalender_id NOT IN (SELECT vorgaenger_kalender_id FROM lehre.tbl_kalender WHERE vorgaenger_kalender_id IS NOT NULL)',
+			null, false
+		);
+
+		$result = $this->_ci->KalenderModel->loadWhere(array(
+			'von <' => $data->bis,
+			'bis >' => $data->von,
+		));
+
+		if (isError($result) || !hasData($result)) return [];
+
+		return array_map(function($row)
+		{
+			return [
+				'message' => $this->_ci->phraseslib->t('ui', 'ma_le_kollision') . ': ' . $row->mitarbeiter_uid . ' (' . date('d.m.Y H:i', strtotime($row->von)) . ' - ' . date('d.m.Y H:i', strtotime($row->bis)) . ')',
+				'errorCode' => 'lector_collision',
+			];
+		}, getData($result));
+	}
+
+	private function _checkReservierung($uids, $data)
+	{
+		if ($this->_ci->variablelib->getVar('ignore_reservierung') === 'true') return [];
+
+		$kollisionsfreie_user = unserialize(KOLLISIONSFREIE_USER);
+
+
+		$this->_ci->KalenderModel->addDistinct('tbl_kalender_event_teilnehmer.uid, tbl_kalender.von, tbl_kalender.bis');
+		$this->_ci->KalenderModel->addSelect('tbl_kalender_event_teilnehmer.uid, tbl_kalender.von, tbl_kalender.bis');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_kalender_event', 'kalender_id', 'LEFT');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_kalender_event_teilnehmer', 'tbl_kalender_event.kalender_id = tbl_kalender_event_teilnehmer.kalender_id', 'LEFT');
+
+		$this->_ci->KalenderModel->db->where_in('tbl_kalender_event_teilnehmer.uid', $uids);
+		$this->_ci->KalenderModel->db->where('tbl_kalender.kalender_id !=', $data->kalender_id);
+		$this->_ci->KalenderModel->db->where_not_in('tbl_kalender.status_kurzbz', array('archived', 'deleted', 'to_delete'));
+		$this->_ci->KalenderModel->db->where_not_in('uid', $kollisionsfreie_user);
+		$this->_ci->KalenderModel->db->where(
+			'tbl_kalender.kalender_id NOT IN (SELECT vorgaenger_kalender_id FROM lehre.tbl_kalender WHERE vorgaenger_kalender_id IS NOT NULL)',
+			null, false
+		);
+		$result = $this->_ci->KalenderModel->loadWhere(array(
+			'von <' => $data->bis,
+			'bis >' => $data->von,
+		));
+
+		if (isError($result) || !hasData($result)) return [];
+
+		return array_map(function($row)
+		{
+			return [
+				'message' => $this->_ci->phraseslib->t('ui', 'reservierung_kollision') . ': ' . $row->uid . ' (' . date('d.m.Y H:i', strtotime($row->von)) . ' - ' . date('d.m.Y H:i', strtotime($row->bis)) . ')',
+				'errorCode' => 'reservation_collision',
+			];
+		}, getData($result));
+	}
+
+	private function _checkZeitsperre($uids, $data)
+	{
+		if ($this->_ci->variablelib->getVar('ignore_zeitsperre') === 'true') return [];
+
+		$this->_ci->ZeitsperreModel->addSelect('mitarbeiter_uid, vondatum, vonstunde_z.beginn as von_beginn, bisdatum, bisstunde_z.ende as bis_ende');
+		$this->_ci->ZeitsperreModel->addJoin('lehre.tbl_stunde vonstunde_z', 'vonstunde_z.stunde = tbl_zeitsperre.vonstunde', 'LEFT');
+		$this->_ci->ZeitsperreModel->addJoin('lehre.tbl_stunde bisstunde_z', 'bisstunde_z.stunde = tbl_zeitsperre.bisstunde', 'LEFT');
+		$this->_ci->ZeitsperreModel->db->where('zeitsperretyp_kurzbz !=', 'ZVerfueg');
+		$this->_ci->ZeitsperreModel->db->where('(tbl_zeitsperre.vondatum + COALESCE(vonstunde_z.beginn, \'00:00\'))::timestamp <', $data->bis);
+		$this->_ci->ZeitsperreModel->db->where('(tbl_zeitsperre.bisdatum + COALESCE(bisstunde_z.ende, \'23:59\'))::timestamp >', $data->von);
+
+		$this->_ci->ZeitsperreModel->db->where_in('mitarbeiter_uid', $uids);
+		$result = $this->_ci->ZeitsperreModel->load();
+
+		if (isError($result) || !hasData($result)) return [];
+
+		return array_map(function($row)
+		{
+			return [
+				'message' => $this->_ci->phraseslib->t('ui', 'ma_zeitsperre_kollision') . ': ' . $row->mitarbeiter_uid . ' (' . date('d.m.Y H:i', strtotime($row->vondatum . ' ' . $row->von_beginn)) . ' - ' . date('d.m.Y H:i', strtotime($row->bisdatum . ' ' . $row->bis_ende)) . ')',
+				'errorCode' => 'absences_collision',
+			];
+		}, getData($result));
+	}
+
+}

application/libraries/collision/checks/ResourcesCollisionCheck.php

@@ -0,0 +1,93 @@
+<?php
+
+class ResourcesCollisionCheck implements ICollisionCheck
+{
+
+	private $_ci;
+	private $_uid;
+
+	public function __construct($params)
+	{
+		$this->_ci =& get_instance();
+		
+		if (isset($params['uid']) && !isEmptyString($params['uid'])){
+			$this->_uid = $params['uid'];
+		} else {
+			show_error('uid of logged user not passed!');
+		}
+
+		$this->_ci->load->model('ressource/Kalender_model', 'KalenderModel');
+		$this->_ci->load->library('VariableLib', array('uid' => $this->_uid));
+		$this->_ci->load->library('PhrasesLib', array('ui'));
+	}
+
+	public function getName()
+	{
+		return 'resources';
+	}
+
+	public function check($data)
+	{
+		if (!isset($data->betriebsmittel_ids, $data->von, $data->bis, $data->kalender_id)) return [];
+
+		if (empty($data->betriebsmittel_ids)) return [];
+
+		if ($this->_ci->variablelib->getVar('ignore_kollision') === 'true') return [];
+		if ($this->_ci->variablelib->getVar('ignore_resources_collisions') === 'true') return [];
+
+		$this->_ci->KalenderModel->addSelect('kalender_id, von, bis, bm.beschreibung AS betriebsmittel_beschreibung');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_betriebsmittel_kalender bk', 'bk.eindeutige_kalender_gruppen_id = tbl_kalender.eindeutige_kalender_gruppen_id');
+		$this->_ci->KalenderModel->addJoin('wawi.tbl_betriebsmittel bm', 'bm.betriebsmittel_id = bk.betriebsmittel_id');
+
+		$this->_ci->KalenderModel->db->where('tbl_kalender.kalender_id !=', $data->kalender_id);
+		$this->_ci->KalenderModel->db->where('tbl_kalender.kalender_id NOT IN (SELECT vorgaenger_kalender_id FROM lehre.tbl_kalender WHERE vorgaenger_kalender_id IS NOT NULL)', null, false);
+		$this->_ci->KalenderModel->db->where_not_in('tbl_kalender.status_kurzbz', ['archived', 'deleted', 'to_delete']);
+		$this->_ci->KalenderModel->db->where_in('bk.betriebsmittel_id', $data->betriebsmittel_ids);
+
+
+		$result = $this->_ci->KalenderModel->loadWhere(array(
+			'von <' => $data->bis,
+			'bis >' => $data->von,
+		));
+
+		if (isError($result)) return [];
+		if (!hasData($result)) return [];
+
+		return array_map(function($row)
+		{
+			return [
+				'errorCode' => 'resource_collision',
+				'message' => $this->_ci->phraseslib->t('ui', 'resource_collision') . ': ' . $row->betriebsmittel_beschreibung . ' (' . date('d.m.Y H:i', strtotime($row->von)) . ' - ' . date('d.m.Y H:i', strtotime($row->bis)) . ')'
+			];
+		}, getData($result));
+	}
+
+	public function checkAll($kalender_ids) 
+	{
+		if (empty($kalender_ids)) return [];
+
+		$this->_ci->KalenderModel->addSelect('DISTINCT ON (tbl_kalender.kalender_id) tbl_kalender.kalender_id');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_betriebsmittel_kalender current_bk', 'current_bk.eindeutige_kalender_gruppen_id = tbl_kalender.eindeutige_kalender_gruppen_id');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_betriebsmittel_kalender other_bk', 'other_bk.betriebsmittel_id = current_bk.betriebsmittel_id');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_kalender other_kalender', 'other_kalender.eindeutige_kalender_gruppen_id = other_bk.eindeutige_kalender_gruppen_id');
+
+		$this->_ci->KalenderModel->db->where('other_kalender.kalender_id != tbl_kalender.kalender_id', null, false);
+		$this->_ci->KalenderModel->db->where('other_kalender.von < tbl_kalender.bis', null, false);
+		$this->_ci->KalenderModel->db->where('other_kalender.bis > tbl_kalender.von', null, false);
+		$this->_ci->KalenderModel->db->where_not_in('other_kalender.status_kurzbz', ['archived', 'deleted', 'to_delete']);
+		$this->_ci->KalenderModel->db->where_in('tbl_kalender.kalender_id', $kalender_ids);
+		$this->_ci->KalenderModel->db->where('other_kalender.kalender_id NOT IN (SELECT vorgaenger_kalender_id FROM lehre.tbl_kalender WHERE vorgaenger_kalender_id IS NOT NULL)', null, false);
+
+		$result = $this->_ci->KalenderModel->load();
+
+		if (isError($result) || !hasData($result)) return [];
+
+		$grouped = [];
+		foreach (getData($result) as $row)
+		{
+			$grouped[$row->kalender_id][] = true;
+		}
+
+		return $grouped;
+	}
+}

application/libraries/collision/checks/RoomCollisionCheck.php

@@ -0,0 +1,89 @@
+<?php
+
+class RoomCollisionCheck implements ICollisionCheck
+{
+
+	private $_ci;
+	private $_uid;
+
+	public function __construct($params)
+	{
+		$this->_ci =& get_instance();
+		
+		if (isset($params['uid']) && !isEmptyString($params['uid'])){
+			$this->_uid = $params['uid'];
+		} else {
+			show_error('uid of logged user not passed!');
+		}
+
+		$this->_ci->load->model('ressource/Kalender_model', 'KalenderModel');
+		$this->_ci->load->library('VariableLib', array('uid' => $this->_uid));
+		$this->_ci->load->library('PhrasesLib', array('ui'));
+	}
+
+	public function getName()
+	{
+		return 'room';
+	}
+
+	public function check($data)
+	{
+		if (!isset($data->ort_kurzbz, $data->von, $data->bis, $data->kalender_id) || isEmptyArray($data->ort_kurzbz)) return [];
+
+		if ($this->_ci->variablelib->getVar('ignore_kollision') === 'true') return [];
+
+		$this->_ci->KalenderModel->addSelect('kalender_id, ort_kurzbz, von, bis');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_kalender_ort', 'kalender_id');
+
+		$this->_ci->KalenderModel->db->where('tbl_kalender.kalender_id !=', $data->kalender_id);
+		$this->_ci->KalenderModel->db->where('tbl_kalender.kalender_id NOT IN (SELECT vorgaenger_kalender_id FROM lehre.tbl_kalender WHERE vorgaenger_kalender_id IS NOT NULL)', null, false);
+		$this->_ci->KalenderModel->db->where_not_in('tbl_kalender.status_kurzbz', ['archived', 'deleted', 'to_delete']);
+
+		$this->_ci->KalenderModel->db->where_in('ort_kurzbz', $data->ort_kurzbz);
+		$result = $this->_ci->KalenderModel->loadWhere(array(
+			'von <' => $data->bis,
+			'bis >' => $data->von,
+		));
+
+		if (isError($result)) return [];
+		if (!hasData($result)) return [];
+
+		return array_map(function($row)
+		{
+			return [
+				'errorCode' => 'room_collision',
+				'message' => $this->_ci->phraseslib->t('ui', 'raum_kollision') . ': ' . $row->ort_kurzbz . ' (' . date('d.m.Y H:i', strtotime($row->von)) . ' - ' . date('d.m.Y H:i', strtotime($row->bis)) . ')'
+			];
+		}, getData($result));
+	}
+
+	public function checkAll($kalender_ids)
+	{
+		if (empty($kalender_ids)) return [];
+
+		$this->_ci->KalenderModel->addSelect('DISTINCT ON (tbl_kalender.kalender_id) tbl_kalender.kalender_id');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_kalender_ort current_ort', 'current_ort.kalender_id = tbl_kalender.kalender_id');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_kalender_ort other_ort', 'other_ort.ort_kurzbz = current_ort.ort_kurzbz');
+		$this->_ci->KalenderModel->addJoin('lehre.tbl_kalender other_kalender', 'other_kalender.kalender_id = other_ort.kalender_id');
+
+		$this->_ci->KalenderModel->db->where('other_kalender.kalender_id != tbl_kalender.kalender_id', null, false);
+		$this->_ci->KalenderModel->db->where('other_kalender.von < tbl_kalender.bis', null, false);
+		$this->_ci->KalenderModel->db->where('other_kalender.bis > tbl_kalender.von', null, false);
+		$this->_ci->KalenderModel->db->where_not_in('other_kalender.status_kurzbz', ['archived', 'deleted', 'to_delete']);
+		$this->_ci->KalenderModel->db->where_in('tbl_kalender.kalender_id', $kalender_ids);
+		$this->_ci->KalenderModel->db->where('other_kalender.kalender_id NOT IN (SELECT vorgaenger_kalender_id FROM lehre.tbl_kalender WHERE vorgaenger_kalender_id IS NOT NULL)', null, false);
+
+		$result = $this->_ci->KalenderModel->load();
+
+
+		if (isError($result) || !hasData($result)) return [];
+
+		$grouped = [];
+		foreach (getData($result) as $row)
+		{
+			$grouped[$row->kalender_id][] = true;
+		}
+
+		return $grouped;
+	}
+}

application/libraries/collision/checks/StudentCollisionCheck.php

@@ -0,0 +1,255 @@
+<?php
+
+class StudentCollisionCheck implements ICollisionCheck
+{
+	private $_ci;
+	private $_uid;
+
+	public function __construct($params)
+	{
+		$this->_ci =& get_instance();
+		
+		if (isset($params['uid']) && !isEmptyString($params['uid'])){
+			$this->_uid = $params['uid'];
+		} else {
+			show_error('uid of logged user not passed!');
+		}
+
+		$this->_ci->load->model('ressource/Kalender_model', 'KalenderModel');
+		$this->_ci->load->library('VariableLib', array('uid' => $this->_uid));
+		$this->_ci->load->library('PhrasesLib', array('ui'));
+	}
+
+	public function getName()
+	{
+		return 'student';
+	}
+
+	public function check($data)
+	{
+		if (!isset($data->von, $data->bis, $data->kalender_id)) return [];
+
+		if ($this->_ci->variablelib->getVar('ignore_kollision') === 'true') return [];
+		if ($this->_ci->variablelib->getVar('kollision_student') !== 'true') return [];
+
+		$kollisionsfreie_user = unserialize(KOLLISIONSFREIE_USER);
+		$placeholders = implode(',', array_fill(0, count($kollisionsfreie_user), '?'));
+
+
+		$dbModel = new DB_Model();
+
+		$qry1 = "
+			SELECT DISTINCT tbl_benutzergruppe.uid
+			FROM lehre.tbl_kalender
+			JOIN lehre.tbl_kalender_lehreinheit USING(kalender_id)
+			JOIN lehre.tbl_lehreinheit ON tbl_lehreinheit.lehreinheit_id = tbl_kalender_lehreinheit.lehreinheit_id
+			JOIN lehre.tbl_lehreinheitgruppe ON tbl_lehreinheitgruppe.lehreinheit_id = tbl_lehreinheit.lehreinheit_id
+			JOIN public.tbl_gruppe
+				ON tbl_gruppe.studiengang_kz = tbl_lehreinheitgruppe.studiengang_kz
+				AND tbl_gruppe.semester = tbl_lehreinheitgruppe.semester
+				AND tbl_gruppe.gruppe_kurzbz = tbl_lehreinheitgruppe.gruppe_kurzbz
+			JOIN public.tbl_benutzergruppe ON tbl_benutzergruppe.gruppe_kurzbz = tbl_gruppe.gruppe_kurzbz
+				AND tbl_benutzergruppe.studiensemester_kurzbz = tbl_lehreinheit.studiensemester_kurzbz
+
+			WHERE tbl_kalender.kalender_id = ?
+				AND tbl_benutzergruppe.uid NOT IN ($placeholders)
+			UNION ALL
+
+			SELECT DISTINCT tbl_studentlehrverband.student_uid AS uid
+			FROM lehre.tbl_kalender
+			JOIN lehre.tbl_kalender_lehreinheit USING(kalender_id)
+			JOIN lehre.tbl_lehreinheit ON tbl_lehreinheit.lehreinheit_id = tbl_kalender_lehreinheit.lehreinheit_id
+			JOIN lehre.tbl_lehreinheitgruppe ON tbl_lehreinheitgruppe.lehreinheit_id = tbl_lehreinheit.lehreinheit_id
+			JOIN public.tbl_studentlehrverband
+				ON tbl_studentlehrverband.studiengang_kz = tbl_lehreinheitgruppe.studiengang_kz
+				AND tbl_studentlehrverband.semester = tbl_lehreinheitgruppe.semester
+				AND tbl_studentlehrverband.studiensemester_kurzbz = tbl_lehreinheit.studiensemester_kurzbz
+				AND (tbl_lehreinheitgruppe.verband = tbl_studentlehrverband.verband OR tbl_lehreinheitgruppe.verband IS NULL OR btrim(tbl_lehreinheitgruppe.verband::text) = '' OR tbl_studentlehrverband.verband IS NULL)
+				AND (tbl_lehreinheitgruppe.gruppe = tbl_studentlehrverband.gruppe OR tbl_lehreinheitgruppe.gruppe IS NULL OR btrim(tbl_lehreinheitgruppe.gruppe::text) = '' OR tbl_studentlehrverband.gruppe IS NULL)
+			WHERE tbl_kalender.kalender_id = ?
+				AND tbl_studentlehrverband.student_uid NOT IN ($placeholders)
+
+		";
+
+		$result1 = $dbModel->execReadOnlyQuery($qry1, array_merge(
+			[$data->kalender_id],
+			$kollisionsfreie_user,
+			[$data->kalender_id],
+			$kollisionsfreie_user
+		));
+
+		if (isError($result1) || !hasData($result1)) return [];
+
+		$curUids = array_flip(array_column(getData($result1), 'uid'));
+
+		$qry2 = "
+			SELECT DISTINCT tbl_kalender.kalender_id, tbl_kalender.von, tbl_kalender.bis, tbl_benutzergruppe.uid
+			FROM lehre.tbl_kalender
+			JOIN lehre.tbl_kalender_lehreinheit ON tbl_kalender_lehreinheit.kalender_id = tbl_kalender.kalender_id
+			JOIN lehre.tbl_lehreinheit ON tbl_lehreinheit.lehreinheit_id = tbl_kalender_lehreinheit.lehreinheit_id
+			JOIN lehre.tbl_lehreinheitgruppe ON tbl_lehreinheitgruppe.lehreinheit_id = tbl_lehreinheit.lehreinheit_id
+			JOIN public.tbl_gruppe
+				ON tbl_gruppe.studiengang_kz = tbl_lehreinheitgruppe.studiengang_kz
+				AND tbl_gruppe.semester = tbl_lehreinheitgruppe.semester
+				AND tbl_gruppe.gruppe_kurzbz = tbl_lehreinheitgruppe.gruppe_kurzbz
+			JOIN public.tbl_benutzergruppe ON tbl_benutzergruppe.gruppe_kurzbz = tbl_gruppe.gruppe_kurzbz
+				AND tbl_benutzergruppe.studiensemester_kurzbz = tbl_lehreinheit.studiensemester_kurzbz
+			WHERE tbl_kalender.von < ?
+				AND tbl_kalender.bis > ?
+				AND tbl_kalender.kalender_id != ?
+				AND tbl_kalender.status_kurzbz NOT IN ('archived', 'deleted', 'to_delete')
+				AND tbl_benutzergruppe.uid NOT IN ($placeholders)
+				AND NOT EXISTS (
+					SELECT 1 FROM lehre.tbl_kalender vorgaenger
+					WHERE vorgaenger.vorgaenger_kalender_id = tbl_kalender.kalender_id
+				)
+
+			UNION ALL
+			
+			SELECT DISTINCT tbl_kalender.kalender_id, tbl_kalender.von, tbl_kalender.bis, tbl_studentlehrverband.student_uid AS uid
+			FROM lehre.tbl_kalender
+			JOIN lehre.tbl_kalender_lehreinheit ON tbl_kalender_lehreinheit.kalender_id = tbl_kalender.kalender_id
+			JOIN lehre.tbl_lehreinheit ON tbl_lehreinheit.lehreinheit_id = tbl_kalender_lehreinheit.lehreinheit_id
+			JOIN lehre.tbl_lehreinheitgruppe ON tbl_lehreinheitgruppe.lehreinheit_id = tbl_lehreinheit.lehreinheit_id
+			JOIN public.tbl_studentlehrverband
+				ON tbl_studentlehrverband.studiengang_kz = tbl_lehreinheitgruppe.studiengang_kz
+				AND tbl_studentlehrverband.semester = tbl_lehreinheitgruppe.semester
+				AND tbl_studentlehrverband.studiensemester_kurzbz = tbl_lehreinheit.studiensemester_kurzbz
+				AND (tbl_lehreinheitgruppe.verband = tbl_studentlehrverband.verband OR tbl_lehreinheitgruppe.verband IS NULL OR btrim(tbl_lehreinheitgruppe.verband::text) = '' OR tbl_studentlehrverband.verband IS NULL)
+				AND (tbl_lehreinheitgruppe.gruppe = tbl_studentlehrverband.gruppe OR tbl_lehreinheitgruppe.gruppe IS NULL OR btrim(tbl_lehreinheitgruppe.gruppe::text) = '' OR tbl_studentlehrverband.gruppe IS NULL)
+			WHERE tbl_kalender.von < ?
+				AND tbl_kalender.bis > ?
+				AND tbl_kalender.kalender_id != ?
+				AND tbl_kalender.status_kurzbz NOT IN ('archived', 'deleted', 'to_delete')
+				AND tbl_studentlehrverband.student_uid NOT IN ($placeholders)
+				AND NOT EXISTS (
+					SELECT 1 FROM lehre.tbl_kalender vorgaenger
+					WHERE vorgaenger.vorgaenger_kalender_id = tbl_kalender.kalender_id
+				)
+		";
+
+		$result2 = $dbModel->execReadOnlyQuery($qry2, array_merge(
+			[$data->bis, $data->von, $data->kalender_id],
+			$kollisionsfreie_user,
+			[$data->bis, $data->von, $data->kalender_id],
+			$kollisionsfreie_user
+		));
+
+		if (isError($result2) || !hasData($result2)) return [];
+
+		$conflicts = [];
+		foreach (getData($result2) as $row)
+		{
+			if (isset($curUids[$row->uid]))
+			{
+				$conflicts[] = [
+					'message' =>
+						$this->_ci->phraseslib->t('ui', 'student_kollision')
+						. ': ' . $row->uid
+						. ' (' . date('d.m.Y H:i', strtotime($row->von))
+						. ' - ' . date('d.m.Y H:i', strtotime($row->bis)) . ')',
+					'errorCode' => 'student_collision'
+				];
+
+			}
+		}
+
+		return $conflicts;
+	}
+
+	public function checkAll($kalender_ids)
+	{
+
+		if (empty($kalender_ids)) return [];
+
+		if ($this->_ci->variablelib->getVar('kollision_student') !== 'true') return [];
+
+		$dbModel = new DB_Model();
+		$placeholders = implode(',', array_fill(0, count($kalender_ids), '?'));
+
+		$sql = "
+			SELECT DISTINCT current_kalender.kalender_id, current_benutzergruppe.uid
+			FROM lehre.tbl_kalender current_kalender
+			JOIN lehre.tbl_kalender_lehreinheit current_kalender_le ON current_kalender_le.kalender_id = current_kalender.kalender_id
+			JOIN lehre.tbl_lehreinheit current_lehreinheit ON current_lehreinheit.lehreinheit_id = current_kalender_le.lehreinheit_id
+			JOIN lehre.tbl_lehreinheitgruppe current_lehreinheitgruppe ON current_lehreinheitgruppe.lehreinheit_id = current_lehreinheit.lehreinheit_id
+			JOIN public.tbl_gruppe current_gruppe
+				ON current_gruppe.studiengang_kz = current_lehreinheitgruppe.studiengang_kz
+				AND current_gruppe.semester = current_lehreinheitgruppe.semester
+				AND current_gruppe.gruppe_kurzbz = current_lehreinheitgruppe.gruppe_kurzbz
+			JOIN public.tbl_benutzergruppe current_benutzergruppe ON current_benutzergruppe.gruppe_kurzbz = current_gruppe.gruppe_kurzbz
+					AND current_benutzergruppe.studiensemester_kurzbz = current_lehreinheit.studiensemester_kurzbz
+			JOIN lehre.tbl_kalender other_kalender
+				ON other_kalender.kalender_id != current_kalender.kalender_id
+				AND other_kalender.von < current_kalender.bis
+				AND other_kalender.bis > current_kalender.von
+				AND other_kalender.status_kurzbz NOT IN ('archived', 'deleted', 'to_delete')
+				AND NOT EXISTS (
+					SELECT 1 FROM lehre.tbl_kalender vorgaenger
+					WHERE vorgaenger.vorgaenger_kalender_id = other_kalender.kalender_id
+				)
+			JOIN lehre.tbl_kalender_lehreinheit other_kalender_le ON other_kalender_le.kalender_id = other_kalender.kalender_id
+			JOIN lehre.tbl_lehreinheit other_lehreinheit ON other_lehreinheit.lehreinheit_id = other_kalender_le.lehreinheit_id
+			JOIN lehre.tbl_lehreinheitgruppe other_lehreinheitgruppe ON other_lehreinheitgruppe.lehreinheit_id = other_lehreinheit.lehreinheit_id
+			JOIN public.tbl_gruppe other_gruppe
+				ON other_gruppe.studiengang_kz = other_lehreinheitgruppe.studiengang_kz
+				AND other_gruppe.semester = other_lehreinheitgruppe.semester
+				AND other_gruppe.gruppe_kurzbz = other_lehreinheitgruppe.gruppe_kurzbz
+			JOIN public.tbl_benutzergruppe other_benutzergruppe
+				ON other_benutzergruppe.gruppe_kurzbz = other_gruppe.gruppe_kurzbz
+				AND other_benutzergruppe.uid = current_benutzergruppe.uid
+				AND other_benutzergruppe.studiensemester_kurzbz = other_lehreinheit.studiensemester_kurzbz
+
+
+			WHERE current_kalender.kalender_id IN ($placeholders)
+
+			UNION ALL
+
+			SELECT DISTINCT current_kalender.kalender_id, current_studentlehrverband.student_uid AS uid
+			FROM lehre.tbl_kalender current_kalender
+			JOIN lehre.tbl_kalender_lehreinheit current_kalender_le ON current_kalender_le.kalender_id = current_kalender.kalender_id
+			JOIN lehre.tbl_lehreinheit current_lehreinheit ON current_lehreinheit.lehreinheit_id = current_kalender_le.lehreinheit_id
+			JOIN lehre.tbl_lehreinheitgruppe current_lehreinheitgruppe ON current_lehreinheitgruppe.lehreinheit_id = current_lehreinheit.lehreinheit_id
+			JOIN public.tbl_studentlehrverband current_studentlehrverband
+				ON current_studentlehrverband.studiengang_kz = current_lehreinheitgruppe.studiengang_kz
+				AND current_studentlehrverband.semester = current_lehreinheitgruppe.semester
+				AND current_studentlehrverband.studiensemester_kurzbz = current_lehreinheit.studiensemester_kurzbz
+				AND (current_lehreinheitgruppe.verband = current_studentlehrverband.verband OR current_lehreinheitgruppe.verband IS NULL OR btrim(current_lehreinheitgruppe.verband::text) = '' OR current_studentlehrverband.verband IS NULL)
+				AND (current_lehreinheitgruppe.gruppe = current_studentlehrverband.gruppe OR current_lehreinheitgruppe.gruppe IS NULL OR btrim(current_lehreinheitgruppe.gruppe::text) = '' OR current_studentlehrverband.gruppe IS NULL)
+
+			JOIN lehre.tbl_kalender other_kalender
+				ON other_kalender.kalender_id != current_kalender.kalender_id
+				AND other_kalender.von < current_kalender.bis
+				AND other_kalender.bis > current_kalender.von
+				AND other_kalender.status_kurzbz NOT IN ('archived', 'deleted', 'to_delete')
+				AND NOT EXISTS (
+					SELECT 1 FROM lehre.tbl_kalender vorgaenger
+					WHERE vorgaenger.vorgaenger_kalender_id = other_kalender.kalender_id
+				)
+			JOIN lehre.tbl_kalender_lehreinheit other_kalender_le ON other_kalender_le.kalender_id = other_kalender.kalender_id
+			JOIN lehre.tbl_lehreinheit other_lehreinheit ON other_lehreinheit.lehreinheit_id = other_kalender_le.lehreinheit_id
+			JOIN lehre.tbl_lehreinheitgruppe other_lehreinheitgruppe ON other_lehreinheitgruppe.lehreinheit_id = other_lehreinheit.lehreinheit_id
+			JOIN public.tbl_studentlehrverband other_slv
+				ON other_slv.studiengang_kz = other_lehreinheitgruppe.studiengang_kz
+				AND other_slv.semester = other_lehreinheitgruppe.semester
+				AND other_slv.studiensemester_kurzbz = other_lehreinheit.studiensemester_kurzbz
+				AND other_slv.student_uid = current_studentlehrverband.student_uid
+				AND (other_lehreinheitgruppe.verband = other_slv.verband OR other_lehreinheitgruppe.verband IS NULL OR btrim(other_lehreinheitgruppe.verband::text) = '' OR other_slv.verband IS NULL)
+				AND (other_lehreinheitgruppe.gruppe = other_slv.gruppe OR other_lehreinheitgruppe.gruppe IS NULL OR btrim(other_lehreinheitgruppe.gruppe::text) = '' OR other_slv.gruppe IS NULL)
+
+			WHERE current_kalender.kalender_id IN ($placeholders)
+		";
+
+		$result = $dbModel->execReadOnlyQuery($sql, array_merge($kalender_ids, $kalender_ids));
+
+		if (isError($result) || !hasData($result)) return [];
+
+		$grouped = [];
+		foreach (getData($result) as $row)
+		{
+			$grouped[$row->kalender_id][] = true;
+		}
+
+		return $grouped;
+	}
+}

application/libraries/collision/checks/VerbandCollisionCheck.php

@@ -0,0 +1,370 @@
+<?php
+
+class VerbandCollisionCheck implements ICollisionCheck
+{
+
+	private $_ci;
+	private $_uid;
+
+	public function __construct($params)
+	{
+		$this->_ci =& get_instance();
+		
+		if (isset($params['uid']) && !isEmptyString($params['uid'])){
+			$this->_uid = $params['uid'];
+		} else {
+			show_error('uid of logged user not passed!');
+		}
+
+		$this->_ci->load->model('ressource/Kalender_model', 'KalenderModel');
+		$this->_ci->load->library('VariableLib', array('uid' => $this->_uid));
+		$this->_ci->load->library('PhrasesLib', array('ui'));
+
+	}
+
+	public function getName()
+	{
+		return 'verband';
+	}
+
+	public function check($data)
+	{
+		if (!isset($data->von, $data->bis, $data->kalender_id)) return [];
+
+		if ($this->_ci->variablelib->getVar('ignore_kollision') === 'true') return [];
+
+		$kollision_student = $this->_ci->variablelib->getVar('kollision_student') === 'false';
+		$kollision_reservierung = $this->_ci->variablelib->getVar('ignore_reservierung') === 'false';
+
+		if (!$kollision_student && !$kollision_reservierung) return [];
+
+		$dbModel = new DB_Model();
+		$collisions = [];
+
+		if ($kollision_student)
+		{
+			$union_event = "";
+
+			if ($kollision_reservierung)
+			{
+				$union_event = "
+					UNION
+					SELECT tbl_kalender_event_teilnehmer.studiengang_kz, tbl_kalender_event_teilnehmer.semester, tbl_kalender_event_teilnehmer.verband, tbl_kalender_event_teilnehmer.gruppe, tbl_kalender_event_teilnehmer.gruppe_kurzbz, tbl_kalender_event_teilnehmer.kalender_id
+					FROM lehre.tbl_kalender_event_teilnehmer
+					WHERE tbl_kalender_event_teilnehmer.rolle_kurzbz = 'teilnehmer'
+				";
+			}
+
+			$sql_gruppen = "
+				SELECT
+					other_kalender.von,
+					other_kalender.bis,
+					COALESCE(
+						other_lehreinheitguppe.gruppe_kurzbz,
+						UPPER(stg.typ::text || stg.kurzbz::text) || '-' || other_lehreinheitguppe.semester ||
+						COALESCE(other_lehreinheitguppe.verband::text, '') ||
+						COALESCE(other_lehreinheitguppe.gruppe::text, '')
+					) AS gruppenname
+				FROM lehre.tbl_kalender current_kalender
+
+				JOIN (
+					SELECT tbl_lehreinheitgruppe.studiengang_kz, tbl_lehreinheitgruppe.semester, tbl_lehreinheitgruppe.verband, tbl_lehreinheitgruppe.gruppe,
+						tbl_lehreinheitgruppe.gruppe_kurzbz, tbl_kalender_lehreinheit.kalender_id
+					FROM lehre.tbl_kalender_lehreinheit
+					JOIN lehre.tbl_lehreinheit ON tbl_lehreinheit.lehreinheit_id = tbl_kalender_lehreinheit.lehreinheit_id
+					JOIN lehre.tbl_lehreinheitgruppe ON tbl_lehreinheitgruppe.lehreinheit_id = tbl_lehreinheit.lehreinheit_id
+					". $union_event ."
+				) current_lehreinheitguppe ON current_lehreinheitguppe.kalender_id = current_kalender.kalender_id
+
+				LEFT JOIN public.tbl_gruppe current_gruppe
+					ON current_gruppe.gruppe_kurzbz = current_lehreinheitguppe.gruppe_kurzbz
+
+				JOIN lehre.tbl_kalender other_kalender
+					ON other_kalender.kalender_id != current_kalender.kalender_id
+					AND other_kalender.von < ?
+					AND other_kalender.bis > ?
+
+				JOIN (
+					SELECT tbl_lehreinheitgruppe.studiengang_kz, tbl_lehreinheitgruppe.semester, tbl_lehreinheitgruppe.verband, tbl_lehreinheitgruppe.gruppe,
+						tbl_lehreinheitgruppe.gruppe_kurzbz, tbl_kalender_lehreinheit.kalender_id
+					FROM lehre.tbl_kalender_lehreinheit
+					JOIN lehre.tbl_lehreinheit ON tbl_lehreinheit.lehreinheit_id = tbl_kalender_lehreinheit.lehreinheit_id
+					JOIN lehre.tbl_lehreinheitgruppe ON tbl_lehreinheitgruppe.lehreinheit_id = tbl_lehreinheit.lehreinheit_id
+					". $union_event ."
+				) other_lehreinheitguppe ON other_lehreinheitguppe.kalender_id = other_kalender.kalender_id
+
+				LEFT JOIN public.tbl_gruppe other_gruppe
+					ON other_gruppe.gruppe_kurzbz = other_lehreinheitguppe.gruppe_kurzbz
+
+				LEFT JOIN public.tbl_studiengang stg
+					ON stg.studiengang_kz = other_lehreinheitguppe.studiengang_kz
+
+				WHERE current_kalender.kalender_id = ?
+				AND other_kalender.status_kurzbz NOT IN ('archived', 'deleted', 'to_delete')
+				AND current_lehreinheitguppe.studiengang_kz = other_lehreinheitguppe.studiengang_kz
+				AND current_lehreinheitguppe.semester = other_lehreinheitguppe.semester
+				AND (
+					(
+						current_lehreinheitguppe.gruppe_kurzbz IS NULL
+						AND other_lehreinheitguppe.gruppe_kurzbz IS NULL
+						AND (
+							current_lehreinheitguppe.verband IS NULL
+							OR (
+								current_lehreinheitguppe.verband = other_lehreinheitguppe.verband
+								AND (current_lehreinheitguppe.gruppe IS NULL OR other_lehreinheitguppe.gruppe IS NULL OR current_lehreinheitguppe.gruppe = other_lehreinheitguppe.gruppe)
+							)
+						)
+					)
+					OR
+					(
+						current_lehreinheitguppe.gruppe_kurzbz IS NOT NULL
+						AND other_lehreinheitguppe.gruppe_kurzbz IS NOT NULL
+						AND current_gruppe.direktinskription IS NOT TRUE
+						AND other_gruppe.direktinskription IS NOT TRUE
+					)
+					OR
+					(
+						(
+							current_lehreinheitguppe.gruppe_kurzbz IS NULL
+							AND other_lehreinheitguppe.gruppe_kurzbz IS NOT NULL
+							AND other_gruppe.direktinskription IS NOT TRUE
+						)
+						OR
+						(
+							current_lehreinheitguppe.gruppe_kurzbz IS NOT NULL
+							AND other_lehreinheitguppe.gruppe_kurzbz IS NULL
+							AND current_gruppe.direktinskription IS NOT TRUE
+						)
+					)
+				)
+				AND other_kalender.kalender_id NOT IN (
+					SELECT vorgaenger_kalender_id
+					FROM lehre.tbl_kalender
+					WHERE vorgaenger_kalender_id IS NOT NULL
+				)
+			";
+
+			$result = $dbModel->execReadOnlyQuery($sql_gruppen, [
+				$data->bis,
+				$data->von,
+				$data->kalender_id,
+			]);
+
+			if (!isError($result) && hasData($result))
+			{
+				foreach (getData($result) as $row)
+				{
+					$collisions[] = [
+						'message' => $this->_ci->phraseslib->t('ui', 'verband_kollision') . ': ' . $row->gruppenname . ' (' . date('d.m.Y H:i', strtotime($row->von)) . ' - ' . date('d.m.Y H:i', strtotime($row->bis)) . ')',
+						'errorCode' => 'verband_collision',
+					];
+				}
+			}
+		}
+
+		if ($kollision_reservierung && !$kollision_student)
+		{
+			$sql_reservierung = "
+				SELECT
+					other_kalender.von,
+					other_kalender.bis,
+					COALESCE(
+						other_event_teilnehmer.gruppe_kurzbz,
+						UPPER(stg.typ::text || stg.kurzbz::text) || '-' || other_event_teilnehmer.semester ||
+						COALESCE(other_event_teilnehmer.verband::text, '') ||
+						COALESCE(other_event_teilnehmer.gruppe::text, '')
+					) AS gruppenname
+				FROM lehre.tbl_kalender_event_teilnehmer current_event_teilnehmer
+				LEFT JOIN public.tbl_gruppe current_gruppe
+					ON current_gruppe.gruppe_kurzbz = current_event_teilnehmer.gruppe_kurzbz
+
+				JOIN lehre.tbl_kalender other_kalender
+					ON other_kalender.kalender_id != ?
+					AND other_kalender.von < ?
+					AND other_kalender.bis > ?
+
+				JOIN lehre.tbl_kalender_event_teilnehmer other_event_teilnehmer
+					ON other_event_teilnehmer.kalender_id = other_kalender.kalender_id
+					AND other_event_teilnehmer.rolle_kurzbz = 'teilnehmer'
+
+				LEFT JOIN public.tbl_gruppe other_gruppe
+					ON other_gruppe.gruppe_kurzbz = other_event_teilnehmer.gruppe_kurzbz
+
+				LEFT JOIN public.tbl_studiengang stg
+					ON stg.studiengang_kz = other_event_teilnehmer.studiengang_kz
+
+				WHERE current_event_teilnehmer.kalender_id = ?
+				AND current_event_teilnehmer.rolle_kurzbz = 'teilnehmer'
+				AND other_kalender.status_kurzbz NOT IN ('archived', 'deleted', 'to_delete')
+				AND current_event_teilnehmer.studiengang_kz = other_event_teilnehmer.studiengang_kz
+				AND current_event_teilnehmer.semester = other_event_teilnehmer.semester
+				AND (
+					(
+						current_event_teilnehmer.gruppe_kurzbz IS NULL
+						AND other_event_teilnehmer.gruppe_kurzbz IS NULL
+						AND (
+							current_event_teilnehmer.verband IS NULL
+							OR (
+								current_event_teilnehmer.verband = other_event_teilnehmer.verband
+								AND (current_event_teilnehmer.gruppe IS NULL OR other_event_teilnehmer.gruppe IS NULL OR current_event_teilnehmer.gruppe = other_event_teilnehmer.gruppe)
+							)
+						)
+					)
+					OR
+					(
+						current_event_teilnehmer.gruppe_kurzbz IS NOT NULL
+						AND other_event_teilnehmer.gruppe_kurzbz IS NOT NULL
+						AND current_gruppe.direktinskription IS NOT TRUE
+						AND other_gruppe.direktinskription IS NOT TRUE
+					)
+					OR
+					(
+						(
+							current_event_teilnehmer.gruppe_kurzbz IS NULL
+							AND other_event_teilnehmer.gruppe_kurzbz IS NOT NULL
+							AND other_gruppe.direktinskription IS NOT TRUE
+						)
+						OR
+						(
+							current_event_teilnehmer.gruppe_kurzbz IS NOT NULL
+							AND other_event_teilnehmer.gruppe_kurzbz IS NULL
+							AND current_gruppe.direktinskription IS NOT TRUE
+						)
+					)
+				)
+				AND other_kalender.kalender_id NOT IN (
+					SELECT vorgaenger_kalender_id
+					FROM lehre.tbl_kalender
+					WHERE vorgaenger_kalender_id IS NOT NULL
+				)
+			";
+
+			$result = $dbModel->execReadOnlyQuery($sql_reservierung, [
+				$data->kalender_id,
+				$data->bis,
+				$data->von,
+				$data->kalender_id,
+			]);
+
+			if (!isError($result) && hasData($result))
+			{
+				foreach (getData($result) as $row)
+				{
+					$collisions[] = [
+						'errorCode' => 'reservation_collision',
+						'message' => $this->_ci->phraseslib->t('ui', 'reservierung_kollision') . ': ' . $row->gruppenname . ' (' . date('d.m.Y H:i', strtotime($row->von)) . ' - ' . date('d.m.Y H:i', strtotime($row->bis)) . ')'
+					];
+				}
+			}
+		}
+
+		return $collisions;
+	}
+
+	public function checkAll($kalender_ids)
+	{
+		if (empty($kalender_ids)) return [];
+
+		$dbModel = new DB_Model();
+
+		$placeholders = implode(',', array_fill(0, count($kalender_ids), '?'));
+
+		$sql = "
+			SELECT DISTINCT ON (current_kalender.kalender_id) current_kalender.kalender_id
+			FROM lehre.tbl_kalender current_kalender
+	
+			JOIN (
+				SELECT tbl_lehreinheitgruppe.studiengang_kz, tbl_lehreinheitgruppe.semester, tbl_lehreinheitgruppe.verband, tbl_lehreinheitgruppe.gruppe,
+					tbl_lehreinheitgruppe.gruppe_kurzbz, tbl_kalender_lehreinheit.kalender_id
+				FROM lehre.tbl_kalender_lehreinheit
+				JOIN lehre.tbl_lehreinheit ON tbl_lehreinheit.lehreinheit_id = tbl_kalender_lehreinheit.lehreinheit_id
+				JOIN lehre.tbl_lehreinheitgruppe ON tbl_lehreinheitgruppe.lehreinheit_id = tbl_lehreinheit.lehreinheit_id
+				UNION
+				SELECT tbl_kalender_event_teilnehmer.studiengang_kz, tbl_kalender_event_teilnehmer.semester, tbl_kalender_event_teilnehmer.verband, tbl_kalender_event_teilnehmer.gruppe,
+					tbl_kalender_event_teilnehmer.gruppe_kurzbz, tbl_kalender_event_teilnehmer.kalender_id
+				FROM lehre.tbl_kalender_event_teilnehmer
+			) current_lehreinheitguppe ON current_lehreinheitguppe.kalender_id = current_kalender.kalender_id
+	
+			LEFT JOIN public.tbl_gruppe current_gruppe
+				ON current_gruppe.gruppe_kurzbz = current_lehreinheitguppe.gruppe_kurzbz
+	
+			JOIN lehre.tbl_kalender other_kalender
+				ON other_kalender.kalender_id != current_kalender.kalender_id
+				AND other_kalender.von < current_kalender.bis
+				AND other_kalender.bis > current_kalender.von
+	
+			JOIN (
+				SELECT tbl_lehreinheitgruppe.studiengang_kz, tbl_lehreinheitgruppe.semester, tbl_lehreinheitgruppe.verband, tbl_lehreinheitgruppe.gruppe,
+					tbl_lehreinheitgruppe.gruppe_kurzbz, tbl_kalender_lehreinheit.kalender_id
+				FROM lehre.tbl_kalender_lehreinheit
+				JOIN lehre.tbl_lehreinheit ON tbl_lehreinheit.lehreinheit_id = tbl_kalender_lehreinheit.lehreinheit_id
+				JOIN lehre.tbl_lehreinheitgruppe ON tbl_lehreinheitgruppe.lehreinheit_id = tbl_lehreinheit.lehreinheit_id
+				UNION
+				SELECT tbl_kalender_event_teilnehmer.studiengang_kz, tbl_kalender_event_teilnehmer.semester, tbl_kalender_event_teilnehmer.verband, tbl_kalender_event_teilnehmer.gruppe,
+					tbl_kalender_event_teilnehmer.gruppe_kurzbz, tbl_kalender_event_teilnehmer.kalender_id
+				FROM lehre.tbl_kalender_event_teilnehmer
+			) other_lehreinheitguppe ON other_lehreinheitguppe.kalender_id = other_kalender.kalender_id
+	
+			LEFT JOIN public.tbl_gruppe other_gruppe
+				ON other_gruppe.gruppe_kurzbz = other_lehreinheitguppe.gruppe_kurzbz
+	
+			WHERE current_kalender.kalender_id IN ({$placeholders})
+			AND other_kalender.status_kurzbz NOT IN ('archived', 'deleted', 'to_delete')
+			AND current_lehreinheitguppe.studiengang_kz = other_lehreinheitguppe.studiengang_kz
+			AND current_lehreinheitguppe.semester = other_lehreinheitguppe.semester
+			AND (
+				(
+					current_lehreinheitguppe.gruppe_kurzbz IS NULL
+					AND other_lehreinheitguppe.gruppe_kurzbz IS NULL
+					AND (
+						current_lehreinheitguppe.verband IS NULL
+						OR (
+							current_lehreinheitguppe.verband = other_lehreinheitguppe.verband
+							AND (current_lehreinheitguppe.gruppe IS NULL OR other_lehreinheitguppe.gruppe IS NULL OR current_lehreinheitguppe.gruppe = other_lehreinheitguppe.gruppe)
+						)
+					)
+				)
+				OR
+				(
+					current_lehreinheitguppe.gruppe_kurzbz IS NOT NULL
+					AND other_lehreinheitguppe.gruppe_kurzbz IS NOT NULL
+					AND current_gruppe.direktinskription IS NOT TRUE
+					AND other_gruppe.direktinskription IS NOT TRUE
+				)
+				OR
+				(
+					(
+						current_lehreinheitguppe.gruppe_kurzbz IS NULL
+						AND other_lehreinheitguppe.gruppe_kurzbz IS NOT NULL
+						AND other_gruppe.direktinskription IS NOT TRUE
+					)
+					OR
+					(
+						current_lehreinheitguppe.gruppe_kurzbz IS NOT NULL
+						AND other_lehreinheitguppe.gruppe_kurzbz IS NULL
+						AND current_gruppe.direktinskription IS NOT TRUE
+					)
+				)
+			)
+			AND other_kalender.kalender_id NOT IN (
+				SELECT vorgaenger_kalender_id
+				FROM lehre.tbl_kalender
+				WHERE vorgaenger_kalender_id IS NOT NULL
+			)
+			
+		";
+
+		$result = $dbModel->execReadOnlyQuery($sql, $kalender_ids);
+
+		if (isError($result) || !hasData($result)) return [];
+
+		$grouped = [];
+		foreach (getData($result) as $row)
+		{
+			$grouped[$row->kalender_id][] = true;
+		}
+
+		return $grouped;
+	}
+
+}

application/libraries/sabredav/SabreDAVAuthLib.php

@@ -0,0 +1,38 @@
+<?php
+
+class SabreDAVAuthLib extends \Sabre\DAV\Auth\Backend\AbstractBasic
+{
+	private $_ci;
+	protected $currentUser = null;
+
+	public function __construct()
+	{
+		$this->_ci =& get_instance();
+		
+		$this->_ci->load->library('AuthLib', array(false));
+		$this->_ci->load->helper('hlp_authentication');
+	}
+
+	public function getCurrentUser()
+	{
+		if ($this->currentUser)
+			return $this->currentUser;
+
+		if (isLogged())
+			return getAuthUID();
+
+		return null;
+	}
+
+	protected function validateUserPass($username, $password)
+	{
+		if (isSuccess($this->_ci->authlib->checkUserAuthByUsernamePassword($username, $password)))
+		{
+			$this->currentUser = $username;
+			return true;
+		}
+
+		$this->currentUser = null;
+		return false;
+	}
+}

application/libraries/sabredav/SabreDAVCalDAVLib.php

@@ -0,0 +1,11 @@
+<?php
+
+require_once __DIR__.'/caldav/SabreDAVACLPrincipalBackend.php';
+require_once __DIR__.'/caldav/SabreDAVCalDAVBackend.php';
+
+/**
+ * Loads the SabreDAV CalDAV classes for the LVPlan calendar endpoint.
+ */
+class SabreDAVCalDAVLib
+{
+}

application/libraries/sabredav/caldav/SabreDAVACLPrincipalBackend.php

@@ -0,0 +1,179 @@
+<?php
+
+/**
+ * PDO principal backend
+ *
+ * This is a simple principal backend that maps exactly to the users table, as
+ * used by Sabre_DAV_Auth_Backend_PDO.
+ *
+ * It assumes all principals are in a single collection. The default collection
+ * is 'principals/', but this can be overriden.
+ *
+ * @package Sabre
+ * @subpackage DAVACL
+ * @copyright Copyright (C) 2007-2011 Rooftop Solutions. All rights reserved.
+ * @author Evert Pot (http://www.rooftopsolutions.nl/)
+ * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
+ */
+class SabreDAVACLPrincipalBackend implements \Sabre\DAVACL\PrincipalBackend\BackendInterface
+{
+    /**
+     * PDO table name for 'principals'
+     *
+     * @var string
+     */
+    protected $tableName;
+
+    /**
+     * PDO table name for 'group members'
+     *
+     * @var string
+     */
+    protected $groupMembersTableName;
+
+	protected $result_ma;
+	protected $auth;
+    /**
+     * Sets up the backend.
+     *
+     * @param PDO $pdo
+     * @param string $tableName
+     */
+    public function __construct($auth)
+	{
+		$this->auth = $auth;
+
+		/*
+		$ma = new mitarbeiter();
+		$this->result_ma = $ma->getMitarbeiter(null,null,null);
+		*/
+    }
+
+	/**
+	 * Liefert den eingeloggten User
+	 */
+	function getUser()
+	{
+		return $this->auth->getCurrentUser();
+	}
+
+
+    /**
+     * Returns a list of principals based on a prefix.
+     *
+     * This prefix will often contain something like 'principals'. You are only
+     * expected to return principals that are in this base path.
+     *
+     * You are expected to return at least a 'uri' for every user, you can
+     * return any additional properties if you wish so. Common properties are:
+     *   {DAV:}displayname
+     *   {http://sabredav.org/ns}email-address - This is a custom SabreDAV
+     *     field that's actualy injected in a number of other properties. If
+     *     you have an email address, use this property.
+     *
+     * @param string $prefixPath
+     * @return array
+     */
+    public function getPrincipalsByPrefix($prefixPath)
+	{
+		//$prefixPath = principals
+		//error_log('Principal.php/getPrincipalsByPrefix('.$prefixPath.')');
+        $principals = array();
+		$user = $this->getUser();
+
+		if($prefixPath=='principals')
+		{
+
+		    $principals[] = array(
+					'id' => $user,
+		            'uri' => 'principals/'.$user,
+		            '{DAV:}displayname' => $user,
+		            '{http://sabredav.org/ns}email-address' => $user.'@example.com',
+		        );
+		}
+
+        return $principals;
+
+    }
+
+    /**
+     * Returns a specific principal, specified by it's path.
+     * The returned structure should be the exact same as from
+     * getPrincipalsByPrefix.
+     *
+     * @param string $path
+     * @return array
+     */
+    public function getPrincipalByPath($path)
+	{
+		$user = mb_substr($path,11);
+
+        $result = array(
+            'id'  => $user,
+            'uri' => 'principals/'.$user,
+            '{DAV:}displayname' => $user,
+            '{http://sabredav.org/ns}email-address' => $user.'@example.com',
+        );
+
+		return $result;
+    }
+
+    /**
+     * Returns the list of members for a group-principal
+     *
+     * @param string $principal
+     * @return array
+     */
+    public function getGroupMemberSet($principal)
+	{
+        $result = array();
+
+		return $result;
+    }
+
+    /**
+     * Returns the list of groups a principal is a member of
+     *
+     * @param string $principal
+     * @return array
+     */
+    public function getGroupMembership($principal)
+	{
+		$result = array();
+		if(preg_match('/^principals\/[0-9A-Za-z\-]*$/',$principal))
+		{
+			$user = mb_substr($principal,11);
+		}
+        return $result;
+
+    }
+
+    /**
+     * Updates the list of group members for a group principal.
+     *
+     * The principals should be passed as a list of uri's.
+     *
+     * @param string $principal
+     * @param array $members
+     * @return void
+     */
+    public function setGroupMemberSet($principal, array $members)
+	{
+		throw new \Sabre\DAV\Exception('Not implemented');
+    }
+
+   public function updatePrincipal($path, \Sabre\DAV\PropPatch $propPatch)
+   {
+	$propPatch->setRemainingResultCode(403);
+   }
+
+	public function searchPrincipals($prefixPath, array $searchProperties, $test = 'allof')
+	{
+		return array();
+	}
+
+	public function findByUri($uri, $principalPrefix)
+	{
+		return null;
+	}
+}

application/libraries/sabredav/caldav/SabreDAVCalDAVBackend.php

@@ -0,0 +1,574 @@
+<?php
+
+/**
+ * CalDAV backend
+ */
+class SabreDAVCalDAVBackend extends \Sabre\CalDAV\Backend\AbstractBackend
+{
+	protected $auth;
+
+	protected $CI;
+
+	CONST CALENDAR_NAME = 'LVPlan';
+	CONST CAL_CATEGORY_STUNDENPLAN = 'Stundenplan';
+	CONST CAL_CATEGORY_STUNDENPLAN_EXAM = 'StundenplanExam';
+	CONST CAL_CATEGORY_STUNDENPLAN_REMOTE = 'StundenplanRemote';
+
+	CONST CAL_CATEGORY_STUNDENPLAN_EXAM_ICON = '📝';
+	CONST CAL_CATEGORY_STUNDENPLAN_REMOTE_ICON = '📍';
+	CONST CAL_CATEGORY_RESERVATION_ICON = '📌';
+	/**
+     * Creates the backend
+     *
+     * @param AuthBackend $auth
+     */
+    public function __construct($auth)
+	{
+		$this->auth = $auth;
+
+		$this->CI =& get_instance();
+    }
+
+	/**
+	 * Liefert den eingeloggten User
+	 */
+	function getUser()
+	{
+		return $this->auth->getCurrentUser();
+	}
+
+    /**
+     * Returns a list of calendars for a principal.
+     *
+     * Every project is an array with the following keys:
+     *  * id, a unique id that will be used by other functions to modify the
+     *    calendar. This can be the same as the uri or a database key.
+     *  * uri, which the basename of the uri with which the calendar is
+     *    accessed.
+     *  * principalUri. The owner of the calendar. Almost always the same as
+     *    principalUri passed to this method.
+     *
+     * Furthermore it can contain webdav properties in clark notation. A very
+     * common one is '{DAV:}displayname'.
+     *
+     * @param string $principalUri
+     * @return array
+     */
+    public function getCalendarsForUser($principalUri)
+	{
+		$user = mb_substr($principalUri,11);
+        $calendars = array();
+		$calendar = array(
+			'id' => $user,
+			'uri' => self::CALENDAR_NAME.'-'.$user,
+			'principaluri' => 'principals/'.$user,
+			'{' . \Sabre\CalDAV\Plugin::NS_CALENDARSERVER . '}getctag' => $this->buildCalendarCtag($user),
+			'{' . \Sabre\CalDAV\Plugin::NS_CALDAV . '}supported-calendar-component-set' => new \Sabre\CalDAV\Xml\Property\SupportedCalendarComponentSet(array('VEVENT')),
+			'{DAV:}displayname'                          => self::CALENDAR_NAME,
+			'{urn:ietf:params:xml:ns:caldav}calendar-description' => 'description comes here',
+			'{urn:ietf:params:xml:ns:caldav}calendar-timezone'    => 'Europe/Vienna',
+			'{http://apple.com/ns/ical/}calendar-order'  => '1',
+			'{http://apple.com/ns/ical/}calendar-color'  => '#FF0000',
+			'{http://sabredav.org/ns}read-only' => 1
+        );
+		$calendars[] = $calendar;
+
+        return $calendars;
+    }
+
+    /**
+     * Creates a new calendar for a principal.
+     *
+     * If the creation was a success, an id must be returned that can be used to reference
+     * this calendar in other methods, such as updateCalendar
+     *
+     * @param string $principalUri
+     * @param string $calendarUri
+     * @param array $properties
+     */
+    public function createCalendar($principalUri,$calendarUri, array $properties)
+	{
+		return $calendarUri;
+    }
+
+    /**
+     * Updates properties for a calendar.
+     *
+     * The mutations array uses the propertyName in clark-notation as key,
+     * and the array value for the property value. In the case a property
+     * should be deleted, the property value will be null.
+     *
+     * This method must be atomic. If one property cannot be changed, the
+     * entire operation must fail.
+     *
+     * If the operation was successful, true can be returned.
+     * If the operation failed, false can be returned.
+     *
+     * Deletion of a non-existant property is always succesful.
+     *
+     * Lastly, it is optional to return detailed information about any
+     * failures. In this case an array should be returned with the following
+     * structure:
+     *
+     * array(
+     *   403 => array(
+     *      '{DAV:}displayname' => null,
+     *   ),
+     *   424 => array(
+     *      '{DAV:}owner' => null,
+     *   )
+     * )
+     *
+     * In this example it was forbidden to update {DAV:}displayname.
+     * (403 Forbidden), which in turn also caused {DAV:}owner to fail
+     * (424 Failed Dependency) because the request needs to be atomic.
+     *
+     * @param string $calendarId
+     * @param array $mutations
+     * @return bool|array
+     */
+    public function updateCalendar($calendarId, \Sabre\DAV\PropPatch $propPatch)
+	{
+        $propPatch->setRemainingResultCode(200);
+    }
+
+    /**
+     * Delete a calendar and all it's objects
+     *
+     * @param string $calendarId
+     * @return void
+     */
+    public function deleteCalendar($calendarId)
+	{
+		return null;
+    }
+
+
+	public function getCalendarData($userUID, $objectUri=null)
+	{
+		$this->CI->load->model("ressource/Mitarbeiter_model", "MitarbeiterModel");
+		$this->CI->load->model("person/Benutzer_model", "BenutzerModel");
+
+		$user = $this->CI->BenutzerModel->loadWhere(array("uid" => $userUID));
+		if(!$user)
+			die('User invalid');
+
+		$this->CI->load->library('KalenderLib', ['uid' => $userUID]);
+
+		$isUserEmployeeResult = $this->CI->MitarbeiterModel->isMitarbeiter($userUID);
+		if (isError($isUserEmployeeResult)) {
+			return;
+		}
+		$isUserEmployee = getData($isUserEmployeeResult);
+
+		$startDate = date('Y-m-d', mktime(0,0,0,date('m'),date('d')-14,date('Y')));
+		$endDate = date('Y-m-d', mktime(0,0,0,date('m')+6,date('d'),date('Y')));
+
+		$data = [];
+
+		if ($isUserEmployee) {
+			$data = $this->CI->kalenderlib->getPlanForLecturerByLecturer($startDate, $endDate, $userUID);
+		} else {
+			$data = $this->CI->kalenderlib->getPlanForStudentByStudent($startDate, $endDate, $userUID);
+		}
+
+		if(!is_array($data))
+			$data = array();
+
+		foreach($data as $item)
+		{
+			$item->calendarDataFragment = $this->buildCalendarDataFragment($item);
+		}
+
+		if (is_null($objectUri))
+		{
+			return $data;
+		}
+
+		$normalizedObjectUri = $this->normalizeObjectUri($objectUri);
+		foreach($data as $row)
+		{
+			if(md5($row->eindeutige_kalender_gruppen_id) == $normalizedObjectUri)
+			{
+				return $row;
+			}
+		}
+
+		return null;
+	}
+
+	public function makeCal($event)
+	{
+		return $this->buildICalLine('BEGIN', 'VCALENDAR')
+			.$this->buildICalLine('VERSION', '2.0')
+			.$this->buildICalTextLine('PRODID', 'FH Technikum Wien')
+			.$this->buildICalLine('BEGIN', 'VTIMEZONE')
+			.$this->buildICalLine('TZID', 'Europe/Vienna')
+			.$this->buildICalLine('BEGIN', 'DAYLIGHT')
+			.$this->buildICalLine('TZOFFSETFROM', '+0100')
+			.$this->buildICalLine('RRULE', 'FREQ=YEARLY;BYMONTH=3;BYDAY=-1SU')
+			.$this->buildICalLine('DTSTART', '19810329T020000')
+			.$this->buildICalLine('TZNAME', 'GMT+02:00')
+			.$this->buildICalLine('TZOFFSETTO', '+0200')
+			.$this->buildICalLine('END', 'DAYLIGHT')
+			.$this->buildICalLine('BEGIN', 'STANDARD')
+			.$this->buildICalLine('TZOFFSETFROM', '+0200')
+			.$this->buildICalLine('RRULE', 'FREQ=YEARLY;BYMONTH=10;BYDAY=-1SU')
+			.$this->buildICalLine('DTSTART', '19961027T030000')
+			.$this->buildICalLine('TZNAME', 'GMT+01:00')
+			.$this->buildICalLine('TZOFFSETTO', '+0100')
+			.$this->buildICalLine('END', 'STANDARD')
+			.$this->buildICalLine('END', 'VTIMEZONE')
+			.$event
+			.$this->buildICalLine('END', 'VCALENDAR');
+	}
+
+	protected function buildCalendarDataFragment($item)
+	{
+		$summaryIcon = '';
+		$summary = $item->type == 'reservierung' ? $item->titel : $item->topic;
+
+		$description = "";
+		if ($item->type == 'reservierung') {
+			$description = $item->beschreibung;
+		} else {
+			$description = $item->lehrfach_bez . "\r\n";
+
+			if (isset($item->lektor) && is_array($item->lektor) && count($item->lektor) > 0) {
+				$description .= "Lektor*in: " . join(", ", array_map(function($teacher) { return $teacher["kurzbz"]; }, $item->lektor)) . "\r\n";
+			}
+		}
+
+
+		$category = self::CAL_CATEGORY_STUNDENPLAN;
+		if ($item->type === 'lehreinheit') {
+			if ($item->lehrform === 'EXAM') {
+				$summaryIcon = self::CAL_CATEGORY_STUNDENPLAN_EXAM_ICON;
+				$category = self::CAL_CATEGORY_STUNDENPLAN_EXAM;
+			} else if (!isset($item->ko_ort_kurzbz) || $item->ko_ort_kurzbz === '') {
+				$summaryIcon = self::CAL_CATEGORY_STUNDENPLAN_REMOTE_ICON;
+				$category = self::CAL_CATEGORY_STUNDENPLAN_REMOTE;
+			}
+		} else if ($item->type === 'reservierung' && (!isset($item->ko_ort_kurzbz) || $item->ko_ort_kurzbz === '')) {
+			$summaryIcon = self::CAL_CATEGORY_RESERVATION_ICON;
+			$category = self::CAL_CATEGORY_STUNDENPLAN_REMOTE;
+		}
+		
+		if ($summaryIcon !== '') {
+			$summary = $summaryIcon . ' ' . $summary;
+		}
+
+		$parsedStartDate = $this->formatICalLocalDateTime($item->isostart);
+		$parsedEndDate = $this->formatICalLocalDateTime($item->isoend);
+		$lastModified = $this->formatICalUtcDateTime(isset($item->updateamum) ? $item->updateamum : null);
+		$dtStamp = $lastModified ?: $this->formatICalUtcDateTime($item->isostart);
+
+		if($dtStamp === null)
+			$dtStamp = '19700101T000000Z';
+
+		$fragment = $this->buildICalLine('BEGIN', 'VEVENT')
+			.$this->buildICalTextLine('UID', $item->eindeutige_kalender_gruppen_id)
+			.$this->buildICalLine('SEQUENCE', (int)$item->kalender_id)
+			.$this->buildICalTextLine('SUMMARY', $summary)
+			.$this->buildICalTextLine('DESCRIPTION', $description)
+			.$this->buildICalTextLine('LOCATION', isset($item->ort_kurzbz) ? $item->ort_kurzbz : '')
+			.$this->buildICalTextLine('CATEGORIES', $category)
+			.$this->buildICalLine('DTSTART', $parsedStartDate, array('TZID' => 'Europe/Vienna'))
+			.$this->buildICalLine('DTEND', $parsedEndDate, array('TZID' => 'Europe/Vienna'));
+
+		if($lastModified !== null)
+			$fragment .= $this->buildICalLine('LAST-MODIFIED', $lastModified);
+
+		return $fragment
+			.$this->buildICalLine('DTSTAMP', $dtStamp)
+			.$this->buildICalLine('END', 'VEVENT');
+	}
+
+	protected function buildCalendarCtag($userUID)
+	{
+		$data = $this->getCalendarData($userUID);
+		if(!is_array($data))
+			$data = array();
+
+		$fragments = array();
+		foreach($data as $row)
+		{
+			$lastModified = isset($row->updateamum) ? $this->getLastModifiedTimestamp($row->updateamum) : null;
+			$calendarData = isset($row->calendarDataFragment) ? $this->makeCal($row->calendarDataFragment) : '';
+			$fragments[] = $this->getObjectUri($row).':'.$lastModified.':'.md5($calendarData);
+		}
+
+		sort($fragments, SORT_STRING);
+		return self::CALENDAR_NAME.'-'.$userUID.'-'.md5(implode('|', $fragments));
+	}
+
+	protected function buildICalTextLine($name, $value, array $parameters = array())
+	{
+		return $this->buildICalLine($name, $this->escapeICalText($value), $parameters);
+	}
+
+	protected function buildICalLine($name, $value, array $parameters = array())
+	{
+		$line = strtoupper($name);
+
+		foreach($parameters as $parameterName => $parameterValue)
+		{
+			$parameterValues = is_array($parameterValue) ? $parameterValue : array($parameterValue);
+			$escapedValues = array();
+
+			foreach($parameterValues as $singleParameterValue)
+				$escapedValues[] = $this->escapeICalParameterValue($singleParameterValue);
+
+			$line .= ';'.strtoupper($parameterName).'='.implode(',', $escapedValues);
+		}
+
+		return $this->foldICalLine($line.':'.(string)$value);
+	}
+
+	protected function foldICalLine($line)
+	{
+		$line = (string)$line;
+		$folded = '';
+
+		while(strlen($line) > 75)
+		{
+			$part = mb_strcut($line, 0, 75, 'UTF-8');
+			$folded .= $part."\r\n";
+			$line = ' '.mb_strcut($line, strlen($part), strlen($line) - strlen($part), 'UTF-8');
+		}
+
+		return $folded.$line."\r\n";
+	}
+
+	protected function escapeICalText($value)
+	{
+		$value = (string)$value;
+		$value = str_replace('\\', '\\\\', $value);
+		$value = str_replace(array("\r\n", "\r", "\n"), '\n', $value);
+		return str_replace(array(';', ','), array('\;', '\,'), $value);
+	}
+
+	protected function escapeICalParameterValue($value)
+	{
+		$value = (string)$value;
+		$value = str_replace(array('\\', '"', "\r", "\n"), array('\\\\', '\"', '', ''), $value);
+
+		if(preg_match('/[;:,]/', $value))
+			return '"'.$value.'"';
+
+		return $value;
+	}
+
+	protected function formatICalLocalDateTime($dateTime)
+	{
+		$dateTime = $this->createDateTime($dateTime);
+		if($dateTime === null)
+			return null;
+
+		$dateTime->setTimezone(new DateTimeZone('Europe/Vienna'));
+		return $dateTime->format('Ymd\THis');
+	}
+
+	protected function formatICalUtcDateTime($dateTime)
+	{
+		$dateTime = $this->createDateTime($dateTime);
+		if($dateTime === null)
+			return null;
+
+		$dateTime->setTimezone(new DateTimeZone('UTC'));
+		return $dateTime->format('Ymd\THis\Z');
+	}
+
+	protected function createDateTime($dateTime)
+	{
+		if($dateTime instanceof DateTime)
+			return clone $dateTime;
+
+		if($dateTime === null || $dateTime === '')
+			return null;
+
+		try
+		{
+			if(is_numeric($dateTime))
+				return new DateTime('@'.(int)$dateTime);
+
+			return new DateTime($dateTime);
+		}
+		catch(Exception $e)
+		{
+			return null;
+		}
+	}
+
+	protected function getObjectUri($row)
+	{
+		return md5($row->eindeutige_kalender_gruppen_id).'.ics';
+	}
+
+	protected function normalizeObjectUri($objectUri)
+	{
+		$normalizedObjectUri = (string)$objectUri;
+
+		if(substr($normalizedObjectUri, -4) === '.ics')
+			$normalizedObjectUri = substr($normalizedObjectUri, 0, -4);
+
+		if(mb_strpos($normalizedObjectUri, '@') !== false)
+			$normalizedObjectUri = mb_substr($normalizedObjectUri, mb_strpos($normalizedObjectUri, '@') + 1);
+
+		if($this->hasObjectUriDatePrefix($normalizedObjectUri))
+			return mb_substr($normalizedObjectUri, mb_strpos($normalizedObjectUri, '-') + 1);
+
+		return $normalizedObjectUri;
+	}
+
+	protected function hasObjectUriDatePrefix($objectUri)
+	{
+		$hyphenPosition = mb_strpos($objectUri, '-');
+		if($hyphenPosition !== 15)
+			return false;
+
+		return preg_match('/^\d{8}T\d{6}$/', mb_substr($objectUri, 0, 15)) === 1;
+	}
+
+	protected function buildCalendarObject($row, $calendarId)
+	{
+		$calendarData = $this->makeCal($row->calendarDataFragment);
+
+		return array(
+			"id"=>$row->eindeutige_kalender_gruppen_id,
+			"calendardata"=>$calendarData,
+			"uri"=>$this->getObjectUri($row),
+			"lastmodified"=>$this->getLastModifiedTimestamp($row->updateamum),
+			"etag"=>'"'.md5($calendarData).'"',
+			"calendarid"=>$calendarId,
+			"size"=>strlen($calendarData),
+			"component"=>'vevent'
+		);
+	}
+
+	protected function getLastModifiedTimestamp($lastModified)
+	{
+		if($lastModified === null || $lastModified === '')
+			return null;
+
+		if(is_numeric($lastModified))
+			return (int)$lastModified;
+
+		$timestamp = strtotime($lastModified);
+		if($timestamp === false)
+			return null;
+
+		return $timestamp;
+	}
+
+    /**
+     * Returns all calendar objects within a calendar.
+     *
+     * Every item contains an array with the following keys:
+     *   * id - unique identifier which will be used for subsequent updates
+     *   * calendardata - The iCalendar-compatible calnedar data
+     *   * uri - a unique key which will be used to construct the uri. This can be any arbitrary string.
+     *   * lastmodified - a timestamp of the last modification time
+     *   * etag - An arbitrary string, surrounded by double-quotes. (e.g.:
+     *   '  "abcdef"')
+     *   * calendarid - The calendarid as it was passed to this function.
+     *
+     * Note that the etag is optional, but it's highly encouraged to return for
+     * speed reasons.
+     *
+     * The calendardata is also optional. If it's not returned
+     * 'getCalendarObject' will be called later, which *is* expected to return
+     * calendardata.
+     *
+     * @param string $calendarId
+     * @return array
+     */
+    public function getCalendarObjects($calendarId)
+	{
+		//$user = $this->getUser();
+		$user = $calendarId;
+		$data = $this->getCalendarData($user);
+
+		//error_log("Caldav_Backend.php/getCalendarObjects($calendarId) ");
+		$return  = array();
+
+		if(!is_array($data))
+			return $return;
+
+		foreach($data as $row)
+		{
+			$return[] = $this->buildCalendarObject($row, $calendarId);
+		}
+		return $return;
+    }
+
+    /**
+     * Returns information from a single calendar object, based on it's object
+     * uri.
+     *
+     * The returned array must have the same keys as getCalendarObjects. The
+     * 'calendardata' object is required here though, while it's not required
+     * for getCalendarObjects.
+     *
+     * @param string $calendarId
+     * @param string $objectUri
+     * @return array
+     */
+    public function getCalendarObject($calendarId,$objectUri)
+	{
+		$user = $calendarId;
+		$data = $this->getCalendarData($user,$objectUri);
+
+		if(empty($data))
+		{
+			return null;
+		}
+		elseif(is_object($data))
+		{
+			$ret = $this->buildCalendarObject($data, $calendarId);
+		}
+
+		return isset($ret) ? $ret : null;
+    }
+
+    /**
+     * Creates a new calendar object.
+     *
+     * @param string $calendarId
+     * @param string $objectUri
+     * @param string $calendarData
+     * @return void
+     */
+    public function createCalendarObject($calendarId,$objectUri,$calendarData)
+	{
+		return null;
+    }
+
+    /**
+     * Updates an existing calendarobject, based on it's uri.
+     *
+     * @param string $calendarId
+     * @param string $objectUri
+     * @param string $calendarData
+     * @return void
+     */
+    public function updateCalendarObject($calendarId,$objectUri,$calendarData)
+	{
+		if(is_resource($calendarData))
+			$calendarData = stream_get_contents($calendarData);
+
+		return '"'.md5((string)$calendarData).'"';
+    }
+
+    /**
+     * Deletes an existing calendar object.
+     *
+     * @param string $calendarId
+     * @param string $objectUri
+     * @return void
+     */
+    public function deleteCalendarObject($calendarId,$objectUri)
+	{
+		return null;
+    }
+}

application/libraries/sabredav/caldav/read_only_calendar/SabreDAVReadOnlyACL.php

@@ -0,0 +1,36 @@
+<?php
+
+class SabreDAVReadOnlyACL
+{
+	public static function getAcl($principalUri, $includeFreeBusy = false)
+	{
+		$acl = array(
+			array(
+				'privilege' => '{DAV:}read',
+				'principal' => $principalUri,
+				'protected' => true,
+			),
+			array(
+				'privilege' => '{DAV:}read',
+				'principal' => $principalUri.'/calendar-proxy-read',
+				'protected' => true,
+			),
+		);
+
+		if($includeFreeBusy)
+		{
+			$acl[] = array(
+				'privilege' => '{'.\Sabre\CalDAV\Plugin::NS_CALDAV.'}read-free-busy',
+				'principal' => '{DAV:}authenticated',
+				'protected' => true,
+			);
+		}
+
+		return $acl;
+	}
+
+	public static function ignoreWrite()
+	{
+		return null;
+	}
+}

application/libraries/sabredav/caldav/read_only_calendar/SabreDAVReadOnlyCalendar.php

@@ -0,0 +1,80 @@
+<?php
+
+class SabreDAVReadOnlyCalendar extends \Sabre\CalDAV\Calendar
+{
+	protected $readOnlyCaldavBackend;
+	protected $readOnlyCalendarInfo;
+
+	public function __construct(\Sabre\CalDAV\Backend\BackendInterface $caldavBackend, $calendarInfo)
+	{
+		parent::__construct($caldavBackend, $calendarInfo);
+		$this->readOnlyCaldavBackend = $caldavBackend;
+		$this->readOnlyCalendarInfo = $calendarInfo;
+	}
+
+	public function getChild($name)
+	{
+		$obj = $this->readOnlyCaldavBackend->getCalendarObject($this->readOnlyCalendarInfo['id'], $name);
+
+		if(!$obj)
+			throw new \Sabre\DAV\Exception\NotFound('Calendar object not found');
+
+		$obj['acl'] = $this->getCalendarObjectAcl();
+
+		return new SabreDAVReadOnlyCalendarObject($this->readOnlyCaldavBackend, $this->readOnlyCalendarInfo, $obj);
+	}
+
+	public function getChildren()
+	{
+		$objs = $this->readOnlyCaldavBackend->getCalendarObjects($this->readOnlyCalendarInfo['id']);
+		$children = array();
+
+		foreach($objs as $obj)
+		{
+			$obj['acl'] = $this->getCalendarObjectAcl();
+			$children[] = new SabreDAVReadOnlyCalendarObject($this->readOnlyCaldavBackend, $this->readOnlyCalendarInfo, $obj);
+		}
+
+		return $children;
+	}
+
+	public function createFile($name, $calendarData = null)
+	{
+		return SabreDAVReadOnlyACL::ignoreWrite();
+	}
+
+	public function createDirectory($name)
+	{
+		return SabreDAVReadOnlyACL::ignoreWrite();
+	}
+
+	public function delete()
+	{
+		return SabreDAVReadOnlyACL::ignoreWrite();
+	}
+
+	public function setName($newName)
+	{
+		return SabreDAVReadOnlyACL::ignoreWrite();
+	}
+
+	public function updateProperties($mutations)
+	{
+		return true;
+	}
+
+	public function propPatch(\Sabre\DAV\PropPatch $propPatch)
+	{
+		$propPatch->setRemainingResultCode(200);
+	}
+
+	public function getACL()
+	{
+		return SabreDAVReadOnlyACL::getAcl($this->getOwner(), true);
+	}
+
+	protected function getCalendarObjectAcl()
+	{
+		return SabreDAVReadOnlyACL::getAcl($this->getOwner());
+	}
+}

application/libraries/sabredav/caldav/read_only_calendar/SabreDAVReadOnlyCalendarHome.php

@@ -0,0 +1,57 @@
+<?php
+
+class SabreDAVReadOnlyCalendarHome extends \Sabre\CalDAV\CalendarHome
+{
+	protected $readOnlyCaldavBackend;
+	protected $readOnlyPrincipalInfo;
+
+	public function __construct(\Sabre\CalDAV\Backend\BackendInterface $caldavBackend, $principalInfo)
+	{
+		parent::__construct($caldavBackend, $principalInfo);
+		$this->readOnlyCaldavBackend = $caldavBackend;
+		$this->readOnlyPrincipalInfo = $principalInfo;
+	}
+
+	public function getChildren()
+	{
+		$calendars = $this->readOnlyCaldavBackend->getCalendarsForUser($this->readOnlyPrincipalInfo['uri']);
+		$objs = array();
+
+		foreach($calendars as $calendar)
+		{
+			$objs[] = new SabreDAVReadOnlyCalendar($this->readOnlyCaldavBackend, $calendar);
+		}
+
+		return $objs;
+	}
+
+	public function createExtendedCollection($name, \Sabre\DAV\MkCol $mkCol)
+	{
+		return SabreDAVReadOnlyACL::ignoreWrite();
+	}
+
+	public function createFile($filename, $data = null)
+	{
+		return SabreDAVReadOnlyACL::ignoreWrite();
+	}
+
+	public function createDirectory($filename)
+	{
+		return SabreDAVReadOnlyACL::ignoreWrite();
+	}
+
+	public function delete()
+	{
+		return SabreDAVReadOnlyACL::ignoreWrite();
+	}
+
+	public function setName($name)
+	{
+		return SabreDAVReadOnlyACL::ignoreWrite();
+	}
+
+	public function getACL()
+	{
+		return SabreDAVReadOnlyACL::getAcl($this->readOnlyPrincipalInfo['uri']);
+	}
+}

application/libraries/sabredav/caldav/read_only_calendar/SabreDAVReadOnlyCalendarObject.php

@@ -0,0 +1,84 @@
+<?php
+
+class SabreDAVReadOnlyCalendarObject extends \Sabre\CalDAV\CalendarObject
+{
+	protected $readOnlyCalendarInfo;
+
+	public function __construct(\Sabre\CalDAV\Backend\BackendInterface $caldavBackend, array $calendarInfo, array $objectData)
+	{
+		parent::__construct($caldavBackend, $calendarInfo, $objectData);
+		$this->readOnlyCalendarInfo = $calendarInfo;
+	}
+
+	public function put($calendarData)
+	{
+		return $this->getCurrentETag();
+	}
+
+	public function getETag()
+	{
+		if($this->isWriteRequest())
+		{
+			$ifMatch = isset($_SERVER['HTTP_IF_MATCH']) ? trim($_SERVER['HTTP_IF_MATCH']) : '';
+			if($ifMatch !== '' && $ifMatch !== '*')
+			{
+				$requestedEtags = explode(',', $ifMatch);
+				foreach($requestedEtags as $requestedEtag)
+				{
+					$requestedEtag = trim($requestedEtag);
+					if($requestedEtag !== '')
+						return $requestedEtag;
+				}
+			}
+		}
+
+		return parent::getETag();
+	}
+
+	public function getLastModified()
+	{
+		if($this->isWriteRequest())
+		{
+			$ifUnmodifiedSince = isset($_SERVER['HTTP_IF_UNMODIFIED_SINCE']) ? trim($_SERVER['HTTP_IF_UNMODIFIED_SINCE']) : '';
+			if($ifUnmodifiedSince !== '')
+			{
+				$timestamp = strtotime($ifUnmodifiedSince);
+				if($timestamp !== false)
+					return max(0, $timestamp - 1);
+			}
+		}
+
+		return parent::getLastModified();
+	}
+
+	public function delete()
+	{
+		return SabreDAVReadOnlyACL::ignoreWrite();
+	}
+
+	public function setName($name)
+	{
+		return SabreDAVReadOnlyACL::ignoreWrite();
+	}
+
+	public function getACL()
+	{
+		return SabreDAVReadOnlyACL::getAcl($this->readOnlyCalendarInfo['principaluri']);
+	}
+
+	protected function isWriteRequest()
+	{
+		if(!isset($_SERVER['REQUEST_METHOD']))
+			return false;
+
+		return in_array(strtoupper($_SERVER['REQUEST_METHOD']), array('PUT', 'DELETE', 'PROPPATCH', 'MOVE', 'COPY', 'PATCH'), true);
+	}
+
+	protected function getCurrentETag()
+	{
+		if(isset($this->objectData['etag']) && $this->objectData['etag'] !== '')
+			return $this->objectData['etag'];
+
+		return parent::getETag();
+	}
+}

application/libraries/sabredav/caldav/read_only_calendar/SabreDAVReadOnlyCalendarRoot.php

@@ -0,0 +1,17 @@
+<?php
+
+class SabreDAVReadOnlyCalendarRoot extends \Sabre\CalDAV\CalendarRoot
+{
+	protected $readOnlyCaldavBackend;
+
+	public function __construct(\Sabre\DAVACL\PrincipalBackend\BackendInterface $principalBackend, \Sabre\CalDAV\Backend\BackendInterface $caldavBackend, $principalPrefix = 'principals')
+	{
+		parent::__construct($principalBackend, $caldavBackend, $principalPrefix);
+		$this->readOnlyCaldavBackend = $caldavBackend;
+	}
+
+	public function getChildForPrincipal(array $principal)
+	{
+		return new SabreDAVReadOnlyCalendarHome($this->readOnlyCaldavBackend, $principal);
+	}
+}

application/models/education/Lehreinheit_model.php

@@ -395,6 +395,77 @@ EOSQL;
 		return $this->execReadOnlyQuery($qry, $params);
 	}
 
+	public function getOffeneStunden($lehreinheit_ids)
+	{
+		if (!is_array($lehreinheit_ids))
+			$lehreinheit_ids = [$lehreinheit_ids];
+
+		if (empty($lehreinheit_ids))
+			return success([]);
+
+		$db = new DB_Model();
+		$placeholders = implode(',', array_fill(0, count($lehreinheit_ids), '?'));
+
+		$qry = "WITH eventdauer AS (
+					SELECT
+						tbl_kalender_lehreinheit.lehreinheit_id,
+						tbl_kalender.von,
+						tbl_kalender.bis,
+						tbl_kalender.kalender_id
+					FROM lehre.tbl_lehreinheit
+							JOIN lehre.tbl_kalender_lehreinheit USING(lehreinheit_id)
+							JOIN lehre.tbl_kalender USING(kalender_id)
+					WHERE tbl_lehreinheit.lehreinheit_id IN ($placeholders)
+					GROUP BY tbl_kalender_lehreinheit.lehreinheit_id, tbl_kalender.von, tbl_kalender.bis, tbl_kalender.kalender_id
+				),
+				raster AS (
+					SELECT
+						eventdauer.lehreinheit_id,
+						eventdauer.kalender_id,
+						eventdauer.von,
+						eventdauer.bis,
+						vonstunde.stunde AS vonstunde_nr,
+						bisstunde.stunde AS bisstunde_nr
+					FROM eventdauer
+						LEFT JOIN lehre.tbl_stunde vonstunde ON eventdauer.von::time = vonstunde.beginn
+						LEFT JOIN lehre.tbl_stunde bisstunde ON eventdauer.bis::time = bisstunde.ende
+				),
+				unterrichtsdauer AS (
+					SELECT
+						raster.lehreinheit_id,
+						raster.kalender_id,
+						sum(EXTRACT(EPOCH FROM (LEAST(stunde.ende, raster.bis::time) - GREATEST(stunde.beginn, raster.von::time))) / 60) AS minuten
+					FROM raster JOIN lehre.tbl_stunde stunde ON stunde.beginn < raster.bis::time AND stunde.ende > raster.von::time
+					WHERE raster.vonstunde_nr IS NULL OR raster.bisstunde_nr IS NULL
+					GROUP BY raster.lehreinheit_id, raster.kalender_id
+				),
+				verplantestunden AS (
+					SELECT raster.lehreinheit_id, raster.kalender_id,
+						CASE
+							WHEN raster.vonstunde_nr IS NOT NULL AND raster.bisstunde_nr IS NOT NULL
+								THEN (raster.bisstunde_nr - raster.vonstunde_nr + 1)
+							ELSE coalesce(unterrichtsdauer.minuten, 0) / 45
+						END AS verplantestunde
+					FROM raster LEFT JOIN unterrichtsdauer ON unterrichtsdauer.lehreinheit_id = raster.lehreinheit_id AND unterrichtsdauer.kalender_id = raster.kalender_id
+				),
+				verplant_gesamt AS (
+					SELECT lehreinheit_id, SUM(verplantestunde) AS verplant
+					FROM verplantestunden
+					GROUP BY lehreinheit_id
+				)
+				SELECT
+					lema.lehreinheit_id,
+					lema.mitarbeiter_uid,
+					lema.planstunden,
+					ROUND(coalesce(verplant_gesamt.verplant, 0), 2) AS verplant,
+					ROUND((lema.planstunden - coalesce(verplant_gesamt.verplant, 0)), 2) AS offenestunden
+				FROM lehre.tbl_lehreinheitmitarbeiter lema
+					LEFT JOIN verplant_gesamt ON verplant_gesamt.lehreinheit_id = lema.lehreinheit_id
+				WHERE lema.lehreinheit_id IN ($placeholders)";
+
+		return $db->execReadOnlyQuery($qry, array_merge($lehreinheit_ids, $lehreinheit_ids));
+	}
+
 	private function getLVTmp($stg_kz = null)
 	{
 		$qry = "SELECT DISTINCT ON(lehrveranstaltung_id) *, 

application/models/organisation/Gruppe_model.php

@@ -11,4 +11,26 @@ class Gruppe_model extends DB_Model
 		$this->dbTable = 'public.tbl_gruppe';
 		$this->pk = 'gruppe_kurzbz';
 	}
+
+	public function search($query_words)
+	{
+		$this->addSelect('gruppe_kurzbz,
+											studiengang_kz,
+											semester,
+											bezeichnung,
+											gid,
+											\'false\' as lehrverband');
+		$this->db->where(array('sichtbar' => true, 'aktiv' => true, 'lehre' => true, 'direktinskription' => false, 'semester IS NOT NULL' => null));
+		$this->db->group_start();
+		foreach ($query_words as $word)
+		{
+			$this->db->group_start();
+			$this->db->where('gruppe_kurzbz ILIKE', "%" . $word . "%");
+			$this->db->or_where('bezeichnung ILIKE', "%" . $word . "%");
+			$this->db->group_end();
+		}
+		$this->db->group_end();
+
+		return $this->load();
+	}
 }

application/models/organisation/Lehrverband_model.php

@@ -41,4 +41,29 @@ class Lehrverband_model extends DB_Model
 
 		return $result;
 	}
+
+	public function search($query_words)
+	{
+		$this->addSelect('CONCAT(UPPER(CONCAT(typ, kurzbz)), \'\', semester, verband, COALESCE(gruppe,\'\')) as gruppe_kurzbz,
+												studiengang_kz,
+												semester,
+												tbl_lehrverband.bezeichnung,
+												gid,
+												\'true\' as lehrverband');
+		$this->addJoin('public.tbl_studiengang', 'studiengang_kz');
+		$this->addOrder('verband');
+		$this->addOrder('gruppe');
+		$this->db->where(array('tbl_lehrverband.aktiv' => true));
+
+		$this->db->group_start();
+		foreach ($query_words as $word)
+		{
+			$this->db->group_start();
+			$this->db->where('CONCAT(CONCAT(typ, kurzbz), \'\', semester, verband, COALESCE(gruppe,\'\')) ILIKE', "%" . $word . "%");
+			$this->db->or_where('tbl_lehrverband.bezeichnung ILIKE', "%" . $word . "%");
+			$this->db->group_end();
+		}
+		$this->db->group_end();
+		return $this->load();
+	}
 }

application/models/ressource/BetriebsmittelKalender_model.php

@@ -0,0 +1,14 @@
+<?php
+class BetriebsmittelKalender_model extends DB_Model
+{
+
+	/**
+	 * Constructor
+	 */
+	public function __construct()
+	{
+		parent::__construct();
+		$this->dbTable = 'lehre.tbl_betriebsmittel_kalender';
+		$this->pk = 'betriebsmittel_kalender_id';
+	}
+}

application/models/ressource/Betriebsmittel_model.php

@@ -31,4 +31,26 @@ class Betriebsmittel_model extends DB_Model
 
 		return $this->execQuery($qry);
 	}
+
+	public function getSchedulableEntriesByDatetimeInterval($from, $to)
+	{
+		$qry = "SELECT
+					*
+				FROM
+					wawi.tbl_betriebsmittel
+				WHERE
+					verplanen=true
+					AND 
+				NOT EXISTS(
+					SELECT 1 FROM lehre.tbl_betriebsmittel_kalender
+					JOIN lehre.tbl_kalender ON tbl_kalender.eindeutige_kalender_gruppen_id = tbl_betriebsmittel_kalender.eindeutige_kalender_gruppen_id
+					WHERE
+						betriebsmittel_id=tbl_betriebsmittel.betriebsmittel_id
+					AND tbl_kalender.von < ?
+					AND tbl_kalender.bis > ?
+				)";
+
+
+		return $this->execQuery($qry, array($to, $from));
+	}
 }

application/models/ressource/Kalender_Event_Rolle_model.php

@@ -0,0 +1,15 @@
+<?php
+class Kalender_Event_Rolle_model extends DB_Model
+{
+
+	/**
+	 * Constructor
+	 */
+	public function __construct()
+	{
+		parent::__construct();
+		$this->dbTable = 'lehre.tbl_kalender_event_rolle';
+		$this->pk = array('rolle_kurzbz');
+		$this->hasSequence = false;
+	}
+}

application/models/ressource/Kalender_Event_Teilnehmer_model.php

@@ -0,0 +1,16 @@
+<?php
+class
+Kalender_Event_Teilnehmer_model extends DB_Model
+{
+
+	/**
+	 * Constructor
+	 */
+	public function __construct()
+	{
+		parent::__construct();
+		$this->dbTable = 'lehre.tbl_kalender_event_teilnehmer';
+		$this->pk = array('kalender_event_teilnehmer_id');
+		$this->hasSequence = false;
+	}
+}

application/models/ressource/Kalender_Event_model.php

@@ -0,0 +1,15 @@
+<?php
+class Kalender_Event_model extends DB_Model
+{
+
+	/**
+	 * Constructor
+	 */
+	public function __construct()
+	{
+		parent::__construct();
+		$this->dbTable = 'lehre.tbl_kalender_event';
+		$this->pk = array('kalender_id');
+		$this->hasSequence = false;
+	}
+}

application/models/ressource/Kalender_Lehreinheit_model.php

@@ -0,0 +1,15 @@
+<?php
+class Kalender_Lehreinheit_model extends DB_Model
+{
+
+	/**
+	 * Constructor
+	 */
+	public function __construct()
+	{
+		parent::__construct();
+		$this->dbTable = 'lehre.tbl_kalender_lehreinheit';
+		$this->pk = array('kalender_id','lehreinheit_id');
+		$this->hasSequence = false;
+	}
+}

application/models/ressource/Kalender_Ort_model.php

@@ -0,0 +1,14 @@
+<?php
+class Kalender_Ort_model extends DB_Model
+{
+
+	/**
+	 * Constructor
+	 */
+	public function __construct()
+	{
+		parent::__construct();
+		$this->dbTable = 'lehre.tbl_kalender_ort';
+		$this->pk = 'kalender_ort_id';
+	}
+}

application/models/ressource/Kalender_model.php

@@ -0,0 +1,27 @@
+<?php
+class Kalender_model extends DB_Model
+{
+
+	/**
+	 * Constructor
+	 */
+	public function __construct()
+	{
+		parent::__construct();
+		$this->dbTable = 'lehre.tbl_kalender';
+		$this->pk = 'kalender_id';
+
+		$this->load->helper('hlp_common');
+	}
+
+	public function generateUniqueGroupId()
+	{
+		while (true) {
+			$uniqueGroupId = generateUUID();
+			$result = $this->loadWhere(['eindeutige_kalender_gruppen_id' => $uniqueGroupId]);
+			if (!hasData($result)) {
+				return $uniqueGroupId;
+			}
+		}
+	}
+}

application/models/ressource/Kalenderstatus_model.php

@@ -0,0 +1,14 @@
+<?php
+class Kalenderstatus_model extends DB_Model
+{
+
+	/**
+	 * Constructor
+	 */
+	public function __construct()
+	{
+		parent::__construct();
+		$this->dbTable = 'lehre.tbl_kalender_status';
+		$this->pk = 'status_kurzbz';
+	}
+}

application/models/ressource/Reservierung_Kalender_model.php

@@ -0,0 +1,14 @@
+<?php
+class Reservierung_Kalender_model extends DB_Model
+{
+
+	/**
+	 * Constructor
+	 */
+	public function __construct()
+	{
+		parent::__construct();
+		$this->dbTable = 'sync.tbl_reservierung_kalender';
+		$this->pk = 'reservierung_kalender_id';
+	}
+}

application/models/ressource/Stundenplandev_Kalender_model.php

@@ -0,0 +1,14 @@
+<?php
+class Stundenplandev_Kalender_model extends DB_Model
+{
+
+	/**
+	 * Constructor
+	 */
+	public function __construct()
+	{
+		parent::__construct();
+		$this->dbTable = 'sync.tbl_stundenplandev_kalender';
+		$this->pk = 'stundenplandev_kalender_id';
+	}
+}

application/views/Tempus.php

@@ -0,0 +1,52 @@
+<?php
+	$includesArray = array(
+		'title' => 'Tempus',
+		'axios027' => true,
+		'bootstrap5' => true,
+		'fontawesome6' => true,
+		'vue3' => true,
+		'primevue3' => true,
+		'tabulator5' => true,
+		'vuedatepicker11' => true,
+		'momentjs2' => true,
+		'tags' => true,
+		'phrases' => array(
+			'global',
+			'ui',
+			'notiz',
+		),
+		'customCSSs' => [
+			'public/css/components/vue-datepicker.css',
+			'public/css/components/primevue.css',
+			'public/css/components/calendar.css',
+			'public/css/Tempus.css',
+			'public/css/Studentenverwaltung.css',
+			'public/css/components/function.css'
+		],
+		'customJSs' => [
+			#'vendor/npm-asset/primevue/tree/tree.min.js',
+			#'vendor/npm-asset/primevue/toast/toast.min.js'
+			'vendor/moment/luxonjs/luxon.min.js'
+		],
+		'customJSModules' => [
+			'public/js/apps/Tempus.js'
+		]
+	);
+
+	$this->load->view('templates/FHC-Header', $includesArray);
+?>
+	<div id="main">
+		<router-view
+			default-semester="<?= $variables['semester_aktuell']; ?>"
+			active-addons="<?= defined('ACTIVE_ADDONS') ? ACTIVE_ADDONS : ''; ?>"
+			tempus-root="<?= site_url('Tempus'); ?>"
+			cis-root="<?= CIS_ROOT; ?>"
+			avatar-url="<?= site_url('Cis/Pub/bild/person/' . getAuthPersonId()); ?>"
+			logout-url="<?= site_url('Cis/Auth/logout'); ?>"
+			:permissions="<?= htmlspecialchars(json_encode($permissions)); ?>"
+			:config="<?=  htmlspecialchars(json_encode($variables)); ?>"
+			>
+		</router-view>
+	</div>
+
+<?php $this->load->view('templates/FHC-Footer', $includesArray); ?>

cis/private/lvplan/index.php

@@ -136,6 +136,36 @@ function jumpKalender(){
 			+'&ver='+document.getElementById('ver_semplan').value+'&grp='+document.getElementById('grp_semplan').value+'&begin='+document.getElementById('studiensemester').value+'&format=html', '_blank');
 	  }
 }
+function jumpKalenderNew(){
+	var stgKz = document.getElementById('stg_kz_semplan').value;
+	var semesterRange = document.getElementById('studiensemester').value;
+
+	if (stgKz == '') {
+		alert("<?php echo $p->t('lvplan/bitteEinenStudiengangAuswaehlen');?>");
+		return;
+	}
+	if (semesterRange == '') {
+		alert("<?php echo $p->t('lvplan/bitteEinStudiensemesterAuswaehlen');?>");
+		return;
+	}
+
+	var rangeMatch = semesterRange.match(/^(\d+)&(?:amp;)?ende=(\d+)$/);
+	if (!rangeMatch) {
+		alert("Fehlerhafter Datumsbereich");
+		return;
+	}
+
+	var url = <?php echo json_encode(APP_ROOT.'index.ci.php/lvplan/html/preview'); ?>
+		+ '?type=verband'
+		+ '&stg_kz=' + encodeURIComponent(stgKz)
+		+ '&sem=' + encodeURIComponent(document.getElementById('sem_semplan').value)
+		+ '&ver=' + encodeURIComponent(document.getElementById('ver_semplan').value)
+		+ '&grp=' + encodeURIComponent(document.getElementById('grp_semplan').value)
+		+ '&begin=' + encodeURIComponent(rangeMatch[1])
+		+ '&ende=' + encodeURIComponent(rangeMatch[2]);
+
+	window.open(url, '_blank');
+}
 function checkSetStudiengang(){
 	if (document.getElementById('stg_kz').value == '') {
 		alert("<?php echo $p->t('lvplan/bitteEinenStudiengangAuswaehlen');?>");
@@ -307,6 +337,7 @@ function LoadGruppe(type)
 	  	echo '<li><a class="Item" href="'.$caldavurl.'">'.$p->t('lvplan/caldavURL').'</a></li>';
 	  	echo '<li><a class="Item" href="'.APP_ROOT.'webdav/lvplan.php/principals/'.$uid.'">'.$p->t('lvplan/caldavURLMac').'</a></li>';
 	  	echo '<li><a class="Item" href="'.APP_ROOT.'webdav/google.php?cal='.encryptData($uid,LVPLAN_CYPHER_KEY).'&'.microtime(true).'">'.$p->t('lvplan/googleURL').'</a></li>';
+	  	echo '<li><a class="Item" href="'.APP_ROOT.'index.ci.php/lvplan/ical/subscription/google?cal='.encryptData($uid,LVPLAN_CYPHER_KEY).'&'.microtime(true).'">NEW '.$p->t('lvplan/googleURL').'</a></li>';
 	  	echo '</ul>';
 	  	echo '	</div>';
 	}
@@ -519,6 +550,7 @@ if(!defined('CIS_LVPLAN_ARCHIVAUSWAHL_ANZEIGEN') || CIS_LVPLAN_ARCHIVAUSWAHL_ANZ
 		echo '</td>
 		<td colspan="3" valign="bottom">
 			<input type="button" name="Abschicken" value="'.$p->t('lvplan/semesterplanLaden').'" onClick="jumpKalender()">
+			&nbsp;<a class="Item" href="#" onClick="jumpKalenderNew(); return false;">HTML-new</a>
 		</td>
 		</tr>
 		</table>

cis/private/lvplan/stpl_kalender.php

@@ -268,7 +268,7 @@ if(!$stdplan->load_data($type,$pers_uid,$ort_kurzbz,$stg_kz,$sem,$ver,$grp,$grup
 }
 
 //Ueberschriften in HTML
-if($format=='HTML')
+if($format=='html')
 {
 	if($type=='verband' || $type=='einheit')
 	{

composer.json

@@ -443,7 +443,7 @@
 		}
 	],
 	"require": {
-		"php": ">=5.6.40",
+		"php": ">=7.0.0",
 
 		"afarkas/html5shiv": "3.7.*",
 		"alvaro-prieto/colresizable": "1.6",
@@ -506,6 +506,8 @@
 
 		"rmariuzzo/jquery-checkboxes": "1.0.7",
 
+		"sabre/dav": "4.0.3",
+		"sabre/event": "5.0.3",
 		"scottjehl/respond": "1.4.2",
 
 		"tapmodo/jcrop": "2.0.4",

config/cis.config-default.inc.php

@@ -152,9 +152,6 @@ define('TAGE_PRO_WOCHE','7');
 // Kalenderkategorie beim Export des LVPlans
 define('LVPLAN_KATEGORIE', 'StundenplanTW');
 
-// Key zum Verschluesseln des LV-Plan Google Links
-define('LVPLAN_CYPHER_KEY',pack('H*', 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA'));
-
 // Gibt an ob Termine aus dem Vorsemester nach der Semesterhaelfte des Folgesemesters
 // noch im pers. LVPan aufscheinen.
 // true | false

config/global.config-default.inc.php

@@ -185,6 +185,9 @@ define('LVPLAN_ANMERKUNG_ANZEIGEN',true);
 //Gruppieren zeitgleicher Lehreinheiten im LV-Plan
 define('LVPLAN_LEHREINHEITEN_GRUPPIEREN',true);
 
+// Key zum Verschluesseln des LV-Plan Kalender-Links
+define('LVPLAN_CYPHER_KEY', pack('H*', 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA'));
+
 // Ende-Datum des LVPlan Syncs Format: 2014-02-01
 // Wenn leer wird jeweils bis Semesterende gesynct
 define('LVPLAN_SYNC_ENDE','');

include/wochenplan.class.php

@@ -512,6 +512,69 @@ class wochenplan extends basis_db
 		$this->kal_link.='&pers_uid='.$this->pers_uid.'&ort_kurzbz='.$this->ort_kurzbz.'&stg_kz='.$this->stg_kz.'&sem='.$this->sem.'&ver='.$this->ver.'&grp='.$this->grp.'&gruppe_kurzbz='.$this->gruppe_kurzbz.'&lva='.$this->lva;
 		$kal_link_ws=$this->kal_link.'&begin='.$this->studiensemester_now->start.'&ende='.$this->studiensemester_now->ende;
 		$kal_link_ss=$this->kal_link.'&begin='.$this->studiensemester_next->start.'&ende='.$this->studiensemester_next->ende;
+		$kal_link_new_ws = null;
+		$kal_link_new_ss = null;
+		$kal_link_new_downloads = false;
+
+		// Build only the type-specific parameters accepted by the new endpoints.
+		if ($this->type == 'student' || $this->type == 'lektor')
+		{
+			$kal_link_new_downloads = true;
+			$kal_link_new_ws = http_build_query(array(
+				'type' => $this->type,
+				'pers_uid' => $this->pers_uid,
+				'begin' => $this->studiensemester_now->start,
+				'ende' => $this->studiensemester_now->ende
+			), '', '&');
+			$kal_link_new_ss = http_build_query(array(
+				'type' => $this->type,
+				'pers_uid' => $this->pers_uid,
+				'begin' => $this->studiensemester_next->start,
+				'ende' => $this->studiensemester_next->ende
+			), '', '&');
+		}
+		elseif ($this->type == 'ort' && $this->ort_kurzbz != '' && $this->ort_kurzbz != 'all')
+		{
+			$kal_link_new_downloads = true;
+			$kal_link_new_ws = http_build_query(array(
+				'type' => $this->type,
+				'pers_uid' => $this->pers_uid,
+				'ort_kurzbz' => $this->ort_kurzbz,
+				'begin' => $this->studiensemester_now->start,
+				'ende' => $this->studiensemester_now->ende
+			), '', '&');
+			$kal_link_new_ss = http_build_query(array(
+				'type' => $this->type,
+				'pers_uid' => $this->pers_uid,
+				'ort_kurzbz' => $this->ort_kurzbz,
+				'begin' => $this->studiensemester_next->start,
+				'ende' => $this->studiensemester_next->ende
+			), '', '&');
+		}
+		elseif ($this->type == 'verband')
+		{
+			$kal_link_new_downloads = true;
+			$kal_link_new_ws = http_build_query(array(
+				'type' => $this->type,
+				'pers_uid' => $this->pers_uid,
+				'stg_kz' => $this->stg_kz,
+				'sem' => $this->sem,
+				'ver' => $this->ver,
+				'grp' => $this->grp,
+				'begin' => $this->studiensemester_now->start,
+				'ende' => $this->studiensemester_now->ende
+			), '', '&');
+			$kal_link_new_ss = http_build_query(array(
+				'type' => $this->type,
+				'pers_uid' => $this->pers_uid,
+				'stg_kz' => $this->stg_kz,
+				'sem' => $this->sem,
+				'ver' => $this->ver,
+				'grp' => $this->grp,
+				'begin' => $this->studiensemester_next->start,
+				'ende' => $this->studiensemester_next->ende
+			), '', '&');
+		}
 
 		echo 				$this->crlf;
 		echo				$this->studiensemester_now->name.'<br>'.$this->crlf;
@@ -521,6 +584,18 @@ class wochenplan extends basis_db
 		echo '				<A href="'.$kal_link_ws.'&format=csv&target=outlook" title="CSV-Outlook"><IMG src="../../../skin/images/outlook.png" height="30" alt="CSV-Outlook" border="0"></A>'.$this->crlf;
 		echo '				<A href="'.$kal_link_ws.'&format=ical&version=1&target=ical" title="iCal Version 1.0"><IMG src="../../../skin/images/ical1.0.png" height="30" alt="vCal Version 1.0" border="0"></A>'.$this->crlf;
 		echo '				<A href="'.$kal_link_ws.'&format=ical&version=2&target=ical" title="iCal Version 2.0"><IMG src="../../../skin/images/ical2.0.png" height="30" alt="vCal Version 2.0" border="0"></A>'.$this->crlf;
+		if ($kal_link_new_ws !== null)
+		{
+			echo '				<br>'.$this->crlf;
+			echo '				<A href="'.APP_ROOT.'index.ci.php/lvplan/html/preview?'.htmlspecialchars($kal_link_new_ws, ENT_QUOTES, 'UTF-8').'" target="_blank" title="HTML-new">HTML-new</A> '.$this->crlf;
+			if ($kal_link_new_downloads)
+			{
+				echo '				<A href="'.APP_ROOT.'index.ci.php/lvplan/excel/download?'.htmlspecialchars($kal_link_new_ws, ENT_QUOTES, 'UTF-8').'" title="excel-new">excel-new</A> '.$this->crlf;
+				echo '				<A href="'.APP_ROOT.'index.ci.php/lvplan/csv/download?'.htmlspecialchars($kal_link_new_ws, ENT_QUOTES, 'UTF-8').'" title="CSV-new">CSV-new</A> '.$this->crlf;
+				echo '				<A href="'.APP_ROOT.'index.ci.php/lvplan/csv/download?'.htmlspecialchars($kal_link_new_ws, ENT_QUOTES, 'UTF-8').'&amp;target=outlook" title="CSV-Outlook-new">CSV-Outlook-new</A> '.$this->crlf;
+				echo '				<A href="'.APP_ROOT.'index.ci.php/lvplan/ical/download?'.htmlspecialchars($kal_link_new_ws, ENT_QUOTES, 'UTF-8').'&amp;version=2" title="iCal Version 2.0-new">iCal2-new</A>'.$this->crlf;
+			}
+		}
 		echo '				</td><td class="stdplan" style="padding:8px;" align="center">'.$p->t('lvplan/semesterplaene').'</td><td style="padding:3px 15px 0px 15px;" align="center">';
 		echo '				<span style="color:#999">'.$this->studiensemester_next->name.'</span><br>'.$this->crlf;
 		echo '				<A href="'.$kal_link_ss.'&format=html" target="_blank" title="HTML"><IMG src="../../../skin/images/html_light.png" height="30" alt="HTML" border="0"></A>'.$this->crlf;
@@ -529,6 +604,18 @@ class wochenplan extends basis_db
 		echo '				<A href="'.$kal_link_ss.'&format=csv&target=outlook" title="CSV-Outlook"><IMG src="../../../skin/images/outlook_light.png" height="30" alt="CSV-Outlook" border="0"></A>'.$this->crlf;
 		echo '				<A href="'.$kal_link_ss.'&format=ical&version=1&target=ical" title="iCal Version 1.0"><IMG src="../../../skin/images/ical1.0_light.png" height="30" alt="iCal Version 1.0" border="0"></A>'.$this->crlf;
 		echo '				<A href="'.$kal_link_ss.'&format=ical&version=2&target=ical" title="iCal Version 2.0"><IMG src="../../../skin/images/ical2.0_light.png" height="30" alt="iCal Version 2.0" border="0"></A>'.$this->crlf;
+		if ($kal_link_new_ss !== null)
+		{
+			echo '				<br>'.$this->crlf;
+			echo '				<A href="'.APP_ROOT.'index.ci.php/lvplan/html/preview?'.htmlspecialchars($kal_link_new_ss, ENT_QUOTES, 'UTF-8').'" target="_blank" title="HTML-new">HTML-new</A> '.$this->crlf;
+			if ($kal_link_new_downloads)
+			{
+				echo '				<A href="'.APP_ROOT.'index.ci.php/lvplan/excel/download?'.htmlspecialchars($kal_link_new_ss, ENT_QUOTES, 'UTF-8').'" title="excel-new">excel-new</A> '.$this->crlf;
+				echo '				<A href="'.APP_ROOT.'index.ci.php/lvplan/csv/download?'.htmlspecialchars($kal_link_new_ss, ENT_QUOTES, 'UTF-8').'" title="CSV-new">CSV-new</A> '.$this->crlf;
+				echo '				<A href="'.APP_ROOT.'index.ci.php/lvplan/csv/download?'.htmlspecialchars($kal_link_new_ss, ENT_QUOTES, 'UTF-8').'&amp;target=outlook" title="CSV-Outlook-new">CSV-Outlook-new</A> '.$this->crlf;
+				echo '				<A href="'.APP_ROOT.'index.ci.php/lvplan/ical/download?'.htmlspecialchars($kal_link_new_ss, ENT_QUOTES, 'UTF-8').'&amp;version=2" title="iCal Version 2.0-new">iCal2-new</A>'.$this->crlf;
+			}
+		}
 		echo '			</td></tr></table>'.$this->crlf;
 		echo '		</TD>'.$this->crlf;
 
@@ -2656,9 +2743,21 @@ class wochenplan extends basis_db
 						}
 						else
 						{
-							echo $this->crlf.'"'.$lehrfach[$idx].'","'.$lvplan_kategorie.'","'.$this->std_plan[$i][$j][$idx]->ort.'","Stundenplan'.$this->crlf.$this->std_plan[$i][$j][$idx]->lehrfach.$this->crlf;
+							
-							echo (($this->std_plan[$i][$j][$idx]->mitarbeiter_kurzbz === null) ? $this->std_plan[$i][$j][$idx]->lektor : $this->std_plan[$i][$j][$idx]->mitarbeiter_kurzbz).$this->crlf.$lvb.$this->crlf.$this->std_plan[$i][$j][$idx]->ort.(LVPLAN_ANMERKUNG_ANZEIGEN?$this->crlf.$this->std_plan[$i][$j][$idx]->anmerkung:'').'","Stundenplan",';
+							$description = '","Stundenplan'.$this->crlf
-							echo '"'.$start_date.'","'.$start_time.'","'.$end_date.'","'.$end_time.'",,,,,';
+							.$this->std_plan[$i][$j][$idx]->lehrfach.$this->crlf // somehow the title
+							.(($this->std_plan[$i][$j][$idx]->mitarbeiter_kurzbz === null) ? $this->std_plan[$i][$j][$idx]->lektor : $this->std_plan[$i][$j][$idx]->mitarbeiter_kurzbz).$this->crlf
+							.$lvb.$this->crlf
+							.$this->std_plan[$i][$j][$idx]->ort
+							.(LVPLAN_ANMERKUNG_ANZEIGEN?$this->crlf.$this->std_plan[$i][$j][$idx]->anmerkung:'');
+
+							echo $this->crlf.
+							'"'.$lehrfach[$idx].'","' // title
+							.$lvplan_kategorie.'","' // category
+							.$this->std_plan[$i][$j][$idx]->ort
+							.$description
+							.'","Stundenplan",' // keywords
+							.'"'.$start_date.'","'.$start_time.'","'.$end_date.'","'.$end_time.'",,,,,';
 						}
 					}
 				}

public/css/Cis4/CoreCalendarEvents.css

@@ -97,3 +97,15 @@
 	display: none;
 }
 
+.weekPageContainer .calendar-event-collisions
+{
+	display: grid;
+	grid-template-columns: auto 1fr;
+	background: repeating-linear-gradient(
+			135deg,
+			transparent,
+			transparent 16px,
+			rgba(0, 0, 0, 0.3) 16px,
+			rgba(0, 0, 0, 0.3) 32px
+	);
+}

public/css/Tempus.css

@@ -0,0 +1,285 @@
+@import './Fhc.css';
+@import './components/searchbar/searchbar.css';
+@import './components/verticalsplit.css';
+@import './components/FilterComponent.css';
+@import './components/Tabs.css';
+@import './components/Notiz.css';
+
+html {
+  font-size: .875em;
+  height: 100%;
+}
+
+body {
+	/*display: flex;*/
+	 height: 100%;
+}
+.heightfull {
+		 height: 95%;
+}
+.navbar-dark .navbar-brand:focus {
+	box-shadow: 0 0 0 .25rem rgba(13,110,253,.25);
+	z-index: 3;
+}
+#main {
+	height: 100%;
+}
+.tempus {
+	height: 100%;
+}
+.searchbar {
+	margin-right: 0!important;
+}
+.searchbar > .input-group {
+	margin-right: 0!important;
+}
+.searchbar > .input-group > * {
+	border-radius: 0!important;
+}
+
+#sidebarMenu {
+	width: 0%;
+}
+
+.tabulator-row.disabled.tabulator-row-odd .tabulator-cell {
+	color: var(--gray-400);
+}
+.tabulator-row.disabled.tabulator-row-even .tabulator-cell {
+	color: var(--gray-500);
+}
+
+/* Dropdown Toolbar Interessent, submenu */
+.dropend .dropdown-toggle.d-flex::after {
+	height: 0;
+}
+
+@media (min-width: 768px) {
+	#sidebarMenu {
+		visibility: visible!important;
+		transform: none;
+		position: inherit;
+		z-index: 1;
+	}
+}
+
+.toast.toast-success {
+	color: #0f5132;
+	background-color: #d1e7dd!important;
+	border-color: #badbcc!important;
+}
+.toast.toast-danger {
+	color: #842029;
+	background-color: #f8d7da!important;
+	border-color: #f5c2c7!important;
+}
+
+.has-filter .fa-filter {
+	color: var(--bs-success);
+}
+
+
+
+
+#parkingslot {
+	border: 1px dashed;
+	min-height: 5vh;
+	max-height: 15vh;
+	color: #AAAAAA;
+	text-align: center;
+	font-size: large;
+	margin-top: 1.25rem;
+	overflow-y: auto;
+	display: flex;
+	align-items: center;
+	justify-content: center;
+	flex-wrap: wrap;
+}
+
+.course-picker {
+	border: 1px dashed #AAAAAA;
+	display: flex;
+	flex-direction: column;
+	flex: 1 1 0;
+	min-height: 0;
+}
+
+.course-picker-row {
+	padding: 0.5rem;
+	margin-bottom: 0.5rem;
+	border: 1px solid var(--bs-border-color);
+	background-color: var(--event-bg);
+}
+
+.parkingevent {
+	border: 1px dashed !important;
+	border-color: #AAAAAA;
+	padding: 0.5rem;
+	margin-bottom: 0.5rem;
+	margin-left: 0.5rem;
+	margin-right: 0.5rem;
+}
+
+:root{
+	--fhc-calendar-pane-height: calc(100vh - 120px);
+}
+
+.eckerltest {
+		box-shadow: 3px 3px 3px #ccc;
+}
+
+.verband-selection {
+	border: 1px dashed #AAAAAA;
+	margin-bottom: 0.5rem;
+	max-height: 450px;
+	overflow-y: auto;
+	display: flex;
+	flex-direction: column;
+}
+
+.lecture-selection {
+	border: 1px dashed #AAAAAA;
+	margin-bottom: 0.5rem;
+	max-height: 20vh;
+	overflow-y: auto;
+	display: flex;
+	flex-direction: column;
+}
+
+.room-selection {
+	border: 1px dashed #AAAAAA;
+	margin-bottom: 0.5rem;
+	padding: 0.5rem 0 0.5rem 0.5rem;
+}
+
+.btn-link.text-danger {
+	text-decoration: none;
+	font-weight: 600;
+}
+
+.btn-link.text-danger:hover {
+	color: #dc3545;
+	transform: scale(1.1);
+}
+
+
+
+.bg-lecturer-wish {
+	opacity: .15;
+}
+.bg-lecturer-block {
+	background: rgba(255, 0, 0, 0.15);
+}
+
+
+.wish-w--2 {
+	background-color: #FF2200;
+}
+.wish-w--1 {
+	background-color: #FF9922;
+}
+.wish-w-1 {
+	background-color: #CCFFCC;
+}
+.wish-w-2 {
+	background-color: #48FA66;
+}
+
+
+.fhc-calendar-base-grid-line-event {
+  position: relative !important;
+}
+
+.updated-event {
+  position: relative !important;
+  z-index: 10;
+  animation: modernFocus 1s ease-out;
+  border-radius: 0.25rem;
+}
+
+.updated-event-long {
+  position: relative !important;
+  z-index: 10;
+  animation: modernFocus 1.8s ease-out;
+  border-radius: 0.25rem;
+}
+
+@keyframes modernFocus {
+  0% {
+    background-color: #cfd4d8;
+    box-shadow:
+      0 0 0 0 rgba(120, 120, 120, 0.8),
+      0 0 0 0 rgba(255, 255, 255, 0.6);
+  }
+
+  30% {
+    background-color: #eef1f3;
+    box-shadow:
+      0 0 0 8px rgba(120, 120, 120, 0.25),
+      0 0 30px 8px rgba(255, 255, 255, 0.7);
+  }
+
+  60% {
+    background-color: #f7f8f9;
+    box-shadow:
+      0 0 0 14px rgba(120, 120, 120, 0.15),
+      0 0 45px 12px rgba(255, 255, 255, 0.5);
+  }
+
+  100% {
+    background-color: inherit;
+    box-shadow:
+      0 0 0 24px rgba(120, 120, 120, 0),
+      0 0 60px 20px rgba(255, 255, 255, 0);
+  }
+}
+
+.deemphasized-event {
+  animation: deEmphasize 1s ease-out;
+}
+
+.deemphasized-event-long {
+  animation: deEmphasize 1.8s ease-out;
+}
+
+@keyframes deEmphasize {
+  0% {
+    opacity: 1;
+    filter: saturate(1) brightness(1);
+  }
+
+  30% {
+    opacity: 0.55;
+    filter: saturate(0.4) brightness(0.4);
+  }
+
+  100% {
+    opacity: 1;
+    filter: saturate(1) brightness(1);
+  }
+}
+
+.spinner-overlay {
+  position: absolute;
+  inset: 0;              /* top:0 right:0 bottom:0 left:0 */
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  z-index: 9999;
+  background: rgba(255, 255, 255, 1);
+  opacity: 0.4;
+}
+
+.spinner {
+  width: 40px;
+  height: 40px;
+  border: 4px solid #ddd;
+  border-top: 4px solid #007bff;
+  border-radius: 50%;
+  animation: spin 0.8s linear infinite;
+}
+
+@keyframes spin {
+  to {
+    transform: rotate(360deg);
+  }
+}

public/css/components/calendar/events.css

@@ -2,6 +2,10 @@
 	cursor: pointer;
 	font-size: var(--fhc-calendar-fontsize-event, .875rem);
 }
+.event--parked {
+	opacity: 0.45 !important;
+}
+
 .fhc-calendar-mode-day .fhc-calendar-base-grid-line,
 .fhc-calendar-mode-week .fhc-calendar-base-grid-line {
 	padding: 0 var(--fhc-calendar-gap-events, var(--fhc-calendar-gap, 1px));
@@ -69,3 +73,39 @@
 .fhc-calendar-base .event > *:hover {
 	filter: brightness(120%);
 }
+
+.fhc-resize-bar {
+	display: flex;
+	align-items: center;
+	justify-content: center;
+	height: 15px;
+	flex: 0 0 12px;
+	cursor: ns-resize;
+	position: relative;
+	visibility: hidden;
+	pointer-events: none;
+	background-color: transparent !important;
+	border: none !important;
+	width: fit-content;
+	margin-left: auto;
+	margin-right: auto;
+}
+
+.fhc-resize-bar--top {
+	margin-bottom: -16px;
+}
+.fhc-resize-bar--bottom {
+	margin-top: -16px;
+}
+
+.fhc-calendar-base-grid-line-event:hover > .fhc-resize-bar {
+	visibility: visible;
+	pointer-events: auto;
+}
+.fhc-calendar-base-grid-line-event.event:hover {
+	z-index: 50;
+}
+.fhc-resize-bar {
+	z-index: 2;
+}
+

public/css/tags.css

@@ -17,6 +17,13 @@
 	transform: scale(1.15);
 }
 
+/* add prop that disasbles hover and cursor*/
+.tag.disabled:hover
+{
+	transform: none;
+	cursor: default;
+}
+
 .tag_rot {
 	background-color: #ff0000ff;
 }

public/js/api/factory/operationalResourceToCalender.js

@@ -0,0 +1,38 @@
+/**
+ * Copyright (C) 2025 fhcomplete.org
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+export default {
+  getSchedulableResourcesByCalendar(calendarID) {
+    return {
+      method: "get",
+      url: "/api/frontend/v1/tempus/OperationalResourceToCalenderAPI/getSchedulableResourcesByCalendar/" + calendarID,
+    };
+  },
+  getAssignedResourcesByCalender(calenderID) {
+    return {
+      method: "get",
+      url: "/api/frontend/v1/tempus/OperationalResourceToCalenderAPI/getAssignedResourcesByCalender/" + calenderID,
+    };
+  },
+  storeResourcesToCalendarRelationship(calenderID, assignedResources) {
+    return {
+      method: "post",
+      url: "/api/frontend/v1/tempus/OperationalResourceToCalenderAPI/storeResourcesToCalendarRelationship",
+      params: { kalender_id: calenderID, assignedResources: assignedResources },
+    };
+  }
+};

public/js/api/factory/renderers.js

@@ -9,4 +9,12 @@ export default {
 			}
 		};
 	},
+	loadTempusRenderers() {
+		return {
+			method: 'get',
+			url: '/api/frontend/v1/RendererLoader/GetTempusRenderers',
+			params: {
+			}
+		};
+	},
 }

public/js/api/factory/tempus/config.js

@@ -0,0 +1,44 @@
+/**
+ * Copyright (C) 2025 fhcomplete.org
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+export default {
+	get() {
+		return {
+			method: 'get',
+			url: 'api/frontend/v1/tempus/config/get'
+		};
+	},
+	getHeader() {
+		return {
+			method: 'get',
+			url: 'api/frontend/v1/tempus/config/getHeader'
+		};
+	},
+	set(params) {
+		return {
+			method: 'post',
+			url: 'api/frontend/v1/tempus/config/set',
+			params
+		};
+	},
+	updateCollision () {
+		return {
+			method: 'post',
+			url: 'api/frontend/v1/tempus/config/updateCollision'
+		};
+	}
+};

public/js/api/factory/tempus/coursepicker.js

@@ -0,0 +1,17 @@
+export default {
+	search(query) {
+		return {
+			method: 'get',
+			url: 'api/frontend/v1/tempus/coursepicker/search',
+			params: { query }
+		};
+	},
+	getByStg(studiengaenge, studiensemester_kurzbz) {
+		return {
+			method: 'post',
+			url: 'api/frontend/v1/tempus/coursepicker/getByStg',
+			params: { studiengaenge, studiensemester_kurzbz }
+		};
+	},
+
+};

public/js/api/factory/tempus/info.js

@@ -0,0 +1,8 @@
+export default {
+	getStudiengaenge() {
+		return {
+			method: 'get',
+			url: '/api/frontend/v1/tempus/Info/getStudiengaenge',
+		};
+	},
+};

public/js/api/factory/tempus/kalender.js

@@ -0,0 +1,136 @@
+
+export default {
+	getPlan(filter, start_date, end_date)
+	{
+		return {
+			method: 'post',
+			url: '/api/frontend/v1/tempus/Kalender/getPlan',
+			params: { ...filter, start_date, end_date }
+		};
+	},
+	getPlanLecturer(start_date, end_date)
+	{
+		return {
+			method: 'get',
+			url: '/api/frontend/v1/tempus/Kalender/getPlanLecturer',
+			params: { start_date, end_date }
+		};
+	},
+	getPlanStudent(start_date, end_date)
+	{
+		return {
+			method: 'get',
+			url: '/api/frontend/v1/tempus/Kalender/getPlanStudent',
+			params: { start_date, end_date }
+		};
+	},
+
+	syncToLecturer(kalender_id)
+	{
+		return {
+			method: 'post',
+			url: '/api/frontend/v1/tempus/Kalender/syncToLecturer',
+			params: { kalender_id }
+		};
+	},
+	syncToStudent(kalender_id)
+	{
+		return {
+			method: 'post',
+			url: '/api/frontend/v1/tempus/Kalender/syncToStudent',
+			params: { kalender_id }
+		};
+	},
+	sync()
+	{
+		return {
+			method: 'post',
+			url: '/api/frontend/v1/tempus/Kalender/sync',
+		};
+	},
+	getLektorZeitsperren(emp, start_date, end_date) {
+		return {
+			method: 'get',
+			url: '/api/frontend/v1/tempus/Kalender/getZeitsperren',
+			params: { emp, start_date, end_date }
+		};
+	},
+	getLektorZeitwuensche(emp, start_date, end_date) {
+		return {
+			method: 'get',
+			url: '/api/frontend/v1/tempus/Kalender/getZeitwuensche',
+			params: { emp, start_date, end_date }
+		};
+	},
+	getStunden() {
+		return {
+			method: 'get',
+			url: '/api/frontend/v1/tempus/Kalender/getStunden',
+		};
+	},
+	getCalendarHours() {
+		return {
+			method: 'get',
+			url: '/api/frontend/v1/tempus/Kalender/getCalendarHours',
+		};
+	},
+	updateKalenderEvent(kalender_id, updatedInfos) {
+		return {
+			method: 'post',
+			url: '/api/frontend/v1/tempus/Kalender/updateKalenderEvent',
+			params: { kalender_id, updatedInfos}
+		};
+	},
+	addKalenderEvent(lehreinheit_id, ort_kurzbz, start_date, end_date) {
+		return {
+			method: 'post',
+			url: '/api/frontend/v1/tempus/Kalender/addKalenderEvent',
+			params: { lehreinheit_id, ort_kurzbz, start_date, end_date}
+		};
+	},
+	calculateMultiWeekPlan(lehreinheit_id, ort_kurzbz, start_date, end_date) {
+		return {
+			method: 'post',
+			url: '/api/frontend/v1/tempus/Kalender/calculateMultiWeekPlan',
+			params: { lehreinheit_id, ort_kurzbz, start_date, end_date }
+		};
+	},
+	confirmMultiWeekPlan(plan, lehreinheit_id ) {
+		return {
+			method: 'post',
+			url: '/api/frontend/v1/tempus/Kalender/confirmMultiWeekPlan',
+			params: { plan, lehreinheit_id }
+		};
+	},
+
+	addToKalenderEvent(target_kalender_id, lehreinheit_id ) {
+		return {
+			method: 'post',
+			url: '/api/frontend/v1/tempus/Kalender/addToKalenderEvent',
+			params: { target_kalender_id, lehreinheit_id }
+		};
+	},
+	getRaumvorschlag(kalender_id) {
+		return {
+			method: 'post',
+			url: '/api/frontend/v1/tempus/Kalender/getRaumvorschlag',
+			params: { kalender_id }
+		};
+	},
+
+	getHistory(kalender_id) {
+		return {
+			method: 'get',
+			url: '/api/frontend/v1/tempus/Kalender/getHistory',
+			params: { kalender_id }
+		};
+	},
+	deleteEntry(kalender_id) {
+		return {
+			method: 'post',
+			url: '/api/frontend/v1/tempus/Kalender/deleteEntry',
+			params: { kalender_id }
+		};
+	},
+
+};

public/js/api/factory/tempus/reservierung.js

@@ -0,0 +1,59 @@
+/**
+ * Copyright (C) 2025 fhcomplete.org
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+export default {
+	getInformation() {
+		return {
+			method: 'get',
+			url: '/api/frontend/v1/tempus/Reservierung/getInformation',
+		};
+	},
+	searchTeilnehmer(query)
+	{
+		return {
+			method: 'get',
+			url: `/api/frontend/v1/tempus/Reservierung/getLektor?query=${encodeURIComponent(query)}`
+		};
+	},
+	searchGroup(query)
+	{
+		return {
+			method: 'get',
+			url: `/api/frontend/v1/tempus/Reservierung/searchGroup?query=${encodeURIComponent(query)}`
+		};
+	},
+	getGruppen(query) {
+		return {
+			method: 'get',
+			url: `/api/frontend/v1/tempus/Reservierung/getGruppen?query=${encodeURIComponent(query)}`
+		};
+	},
+	getRollen() {
+		return {
+			method: 'get',
+			url: '/api/frontend/v1/tempus/Reservierung/getRollen',
+		};
+	},
+	addReservierung(titel, beschreibung, ort_kurzbz, start_date, end_date, teilnehmer, specialFinalGroups, specialGroups, groups) {
+		return {
+			method: 'post',
+			url: '/api/frontend/v1/tempus/Reservierung/addReservierung',
+			params: { titel, beschreibung, ort_kurzbz, start_date, end_date, teilnehmer, specialFinalGroups, specialGroups, groups}
+		};
+	},
+
+};

public/js/api/factory/tempus/studiengangtree.js

@@ -0,0 +1,43 @@
+/**
+ * Copyright (C) 2025 fhcomplete.org
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+export default {
+	get(path) {
+		let url = 'api/frontend/v1/lv/StgTree';
+		if (path)
+			url += '/' + path;
+		return {
+			method: 'get',
+			url
+		};
+	},
+	favorites: {
+		get() {
+			return {
+				method: 'get',
+				url: 'api/frontend/v1/tempus/favorites'
+			};
+		},
+		set(favorites) {
+			return {
+				method: 'post',
+				url: 'api/frontend/v1/tempus/favorites/set',
+				params: { favorites }
+			};
+		}
+	}
+};

public/js/api/factory/tempus/tag.js

@@ -0,0 +1,59 @@
+export default {
+
+	getTag(data)
+	{
+		return {
+			method: 'get',
+			url: '/api/frontend/v1/tempus/Tags/getTag',
+			params: data
+		};
+	},
+
+	getTags(data)
+	{
+		return {
+			method: 'get',
+			url: '/api/frontend/v1/tempus/Tags/getTags'
+		};
+	},
+	getTagsByCalendar(calenderGroupId)
+	{
+		return {
+			method: 'get',
+			url: '/api/frontend/v1/tempus/Tags/getTagsByCalendar/' + calenderGroupId,
+		};
+	},
+	addTag(data)
+	{
+		return {
+			method: 'post',
+			url: '/api/frontend/v1/tempus/Tags/addTag',
+			params: data
+		};
+	},
+	updateTag(data)
+	{
+		return {
+			method: 'post',
+			url: '/api/frontend/v1/tempus/Tags/updateTag',
+			params: data
+		};
+	},
+	doneTag(data)
+	{
+		return {
+			method: 'post',
+			url: '/api/frontend/v1/tempus/Tags/doneTag',
+			params: data
+		};
+	},
+
+	deleteTag(data)
+	{
+		return {
+			method: 'post',
+			url: '/api/frontend/v1/tempus/Tags/deleteTag',
+			params: data
+		};
+	},
+};

public/js/apps/Tempus.js

@@ -0,0 +1,46 @@
+/**
+ * Copyright (C) 2024 fhcomplete.org
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import FhcTempus from "../components/Tempus/Tempus.js";
+
+import Phrasen from "../plugins/Phrasen.js";
+import {capitalize} from "../helpers/StringHelpers.js";
+
+
+const ciPath = FHC_JS_DATA_STORAGE_OBJECT.app_root.replace(/(https:|)(^|\/\/)(.*?\/)/g, '') + FHC_JS_DATA_STORAGE_OBJECT.ci_router;
+
+const router = VueRouter.createRouter({
+	history: VueRouter.createWebHistory(),
+	routes: [
+		{ path: `/${ciPath}/Tempus`, component: FhcTempus },
+	]
+});
+
+const app = Vue.createApp();
+
+app.config.globalProperties.$capitalize = capitalize;
+app
+	.use(router)
+	.use(primevue.config.default, {
+		zIndex: {
+			overlay: 1100,
+			tooltip: 99999
+		}
+	})
+	.use(Phrasen)
+	.directive('tooltip', primevue.tooltip)
+	.mount('#main');

public/js/components/AppConfig.js

@@ -79,26 +79,30 @@ export default {
 					this.$fhcAlert.alertSuccess(this.$p.t('ui/settings_saved'));
 				})
 				.catch(this.$fhcAlert.handleSystemErrors);
+		},
+		reload()
+		{
+			this.$api
+				.call(this.endpoints.get())
+				.then(res => {
+					Object.keys(res.data).forEach(key => {
+						const binding = { ...res.data[key] };
+						delete binding.value;
+						delete binding.options;
+						const options = res.data[key].options;
+						this.tempValues[key] = res.data[key].value;
+						this.setup[key] = {
+							binding,
+							options
+						};
+					});
+					this.$emit('update:modelValue', { ...this.tempValues });
+				})
+				.catch(this.$fhcAlert.handleSystemErrors);
 		}
 	},
 	created() {
-		this.$api
+		this.reload();
-			.call(this.endpoints.get())
-			.then(res => {
-				Object.keys(res.data).forEach(key => {
-					const binding = { ...res.data[key] };
-					delete binding.value;
-					delete binding.options;
-					const options = res.data[key].options;
-					this.tempValues[key] = res.data[key].value;
-					this.setup[key] = {
-						binding,
-						options
-					};
-				});
-				this.$emit('update:modelValue', { ...this.tempValues });
-			})
-			.catch(this.$fhcAlert.handleSystemErrors);
 	},
 	template: /* html */`
 	<fhc-form class="stv-config" ref="form" @submit.prevent="update">

public/js/components/Calendar/Base.js

@@ -1,26 +1,35 @@
-import BaseDraganddrop from './Base/DragAndDrop.js';
 import BaseHeader from './Base/Header.js';
 import BaseSlider from './Base/Slider.js';
 import BsModal from '../Bootstrap/Modal.js';
 
 import CalClick from '../../directives/Calendar/Click.js';
+import DragClick from '../../directives/dragClick.js';
+import Draggable from '../../directives/draggable.js';
+import Drop from '../../directives/drop.js';
 
 export default {
 	name: "CalendarBase",
 	components: {
-		BaseDraganddrop,
 		BaseHeader,
 		BaseSlider,
 		BsModal
 	},
 	directives: {
-		CalClick
+		CalClick,
+		DragClick,
+		Draggable,
+		Drop
 	},
 	provide() {
 		return {
+			events: Vue.computed(() => this.convertedEvents),
+			backgrounds: Vue.computed(() => this.convertedBackgrounds),
+			dropAllowed: Vue.computed(() => !!this.onDrop),
+			onDrop: Vue.computed(() => this.onDrop || null),
 			locale: Vue.computed(() => this.locale),
 			timezone: Vue.computed(() => this.timezone),
 			timeGrid: Vue.computed(() => this.timeGrid),
+			hoursPlan: Vue.computed(() => this.hoursPlan),
 			draggableEvents: Vue.computed(() => {
 				if (!this.draggableEvents)
 					return () => false;
@@ -43,8 +52,20 @@ export default {
 
 				return () => true;
 			}),
+			resizableEvents: Vue.computed(() => {
+				if (!this.resizableEvents)
+					return () => false;
+
+				if (Array.isArray(this.resizableEvents))
+					return event => this.resizableEvents.includes(event.type);
+				if (this.resizableEvents instanceof Function)
+					return this.resizableEvents;
+
+				return () => true;
+			}),
 			hasDragoverFunc: Vue.computed(() => this.onDragover),
-			mode: Vue.computed(() => this.mode)
+			mode: Vue.computed(() => this.mode),
+			onResize: Vue.computed(() => this.onResize || null),
 		};
 	},
 	props: {
@@ -93,11 +114,18 @@ export default {
 			type: Boolean,
 			default: undefined
 		},
+		btnTableList: {
+			type: Boolean,
+			default: undefined
+		},
 		timeGrid: Array,
+		hoursPlan: Object,
 		draggableEvents: [Boolean, Array, Function],
 		dropableEvents: [Boolean, Array, Function],
+		resizableEvents: [Boolean, Array, Function],
 		onDragover: Function,
-		onDrop: Function
+		onDrop: Function,
+		onResize: Function
 	},
 	emits: [
 		"click:next",
@@ -136,7 +164,7 @@ export default {
 						res.start = luxon.DateTime.fromMillis(res.start, { zone: this.timezone, locale: this.locale });
 					else if (res.start instanceof Date)
 						res.start = luxon.DateTime.fromJSDate(res.start, { zone: this.timezone, locale: this.locale });
-					else if (typeof res.start === 
+					else if (typeof res.start ===
 						'string' || res.start instanceof String)
 						res.start = luxon.DateTime.fromISO(res.start, { zone: this.timezone, locale: this.locale });
 				}
@@ -145,7 +173,7 @@ export default {
 						res.end = luxon.DateTime.fromMillis(res.end, { zone: this.timezone, locale: this.locale });
 					else if (res.end instanceof Date)
 						res.end = luxon.DateTime.fromJSDate(res.end, { zone: this.timezone, locale: this.locale });
-					else if (typeof res.end === 
+					else if (typeof res.end ===
 						'string' || res.end instanceof String)
 						res.end = luxon.DateTime.fromISO(res.end, { zone: this.timezone, locale: this.locale });
 				}
@@ -171,7 +199,10 @@ export default {
 			// choose default mode
 			let mode = this.mode;
 			if (mode)
-				mode = mode.toLowerCase();
+			{
+				const lower = mode.toLowerCase();
+				mode = Object.keys(this.modes).find(key => key.toLowerCase() === lower) || null;
+			}
 			if (!mode || !this.modes[mode])
 				mode = Object.keys(this.modes).find(Boolean); // start with first entry as active mode
 			return mode || '';
@@ -188,7 +219,7 @@ export default {
 	},
 	watch: {
 		sDate(n, o) {
-			if (this.sDate.isValid && !this.sDate.hasSame(this.internalDate, 'day'))
+			if (this.sDate.isValid && (!this.internalDate || !this.sDate.hasSame(this.internalDate, 'day')))
 				this.internalDate = this.sDate;
 		},
 		sMode() {
@@ -240,9 +271,7 @@ export default {
 				break;
 			}
 		},
-		onDropItem(evt, start, end) {
+
-			this.$emit('drop', evt, start, end);
-		},
 		showEventModal(eventObj) {
 			this.modalEvent = eventObj;
 			this.$refs.modal.show();
@@ -263,11 +292,7 @@ export default {
 	},
 	template: /* html */`
 	<div class="fhc-calendar-base h-100">
-		<base-draganddrop
+		<div class="card h-100"
-			class="card h-100"
-			:events="convertedEvents"
-			:backgrounds="convertedBackgrounds"
-			@drop="onDropItem"
 			v-cal-click:container
 			@cal-click-default.capture="handleClickDefaults"
 		>
@@ -282,6 +307,7 @@ export default {
 				:btn-week="!!modes['week'] && (btnWeek || (showBtns && btnWeek !== false))"
 				:btn-month="!!modes['month'] && (btnMonth || (showBtns && btnMonth !== false))"
 				:btn-list="!!modes['list'] && (btnList || (showBtns && btnList !== false))"
+				:btn-table-list="!!modes['tableList'] && (btnTableList || (showBtns && btnTableList !== false))"
 				:mode-options="modeOptions ? modeOptions[cMode] : undefined"
 			>
 				<slot name="actions" />
@@ -293,11 +319,12 @@ export default {
 				@update:range="$emit('update:range', $event)"
 				@request-modal-open="showEventModal"
 				@request-modal-close="hideEventModal"
+				@drop="$emit('drop', $event)"
 				v-bind="modeOptions ? modeOptions[cMode] : null || {}"
 			>
 				<template v-slot="slot"><slot v-bind="slot" /></template>
 			</component>
-		</base-draganddrop>
+		</div>
 		<bs-modal ref="modal" dialog-class="modal-lg" body-class="" @hidden-bs-modal="onModalHidden">
 			<template #title>
 				<slot v-if="modalEvent" v-bind="{mode: 'eventheader', event: modalEvent.event}" />
@@ -308,4 +335,4 @@ export default {
 		</bs-modal>
 	</div>
 	`
-}
+}

public/js/components/Calendar/Base/Grid.js

@@ -1,7 +1,8 @@
 import GridLine from './Grid/Line.js';
 import GridLineEvent from './Grid/Line/Event.js';
 
-import CalDnd from '../../../directives/Calendar/DragAndDrop.js';
+import drop from '../../../directives/drop.js';
+import { useResizeHandler } from '../../../helpers/Tempus/ResizeHandler.js';
 
 export default {
 	name: "CalendarGrid",
@@ -10,12 +11,18 @@ export default {
 		GridLineEvent
 	},
 	directives: {
-		CalDnd
+		drop
 	},
 	inject: {
 		originalEvents: "events",
 		originalBackgrounds: "backgrounds",
-		dropAllowed: "dropAllowed"
+		dropAllowed: "dropAllowed",
+		onDrop: "onDrop",
+		onResize: "onResize",
+		timeGrid: {
+			from: "timeGrid",
+			default: () => []
+		}
 	},
 	provide() {
 		return {
@@ -57,10 +64,10 @@ export default {
 	},
 	data() {
 		return {
-			dragging: false,
 			resizeObserver: null,
 			mutationObserver: null,
-			userScroll: true
+			userScroll: true,
+			isDragging: false
 		};
 	},
 	computed: {
@@ -252,17 +259,27 @@ export default {
 				pageLeft += this.getPageLeft(el.offsetParent);
 			return pageLeft;
 		},
-		getTimestampFromMouse(evt, dayTimestamp) {
+		getTimestampFromMouse(evt, dayTimestamp)
+		{
 			let mouse, mouseFrac;
-			if (this.flipAxis) {
+
-				mouse = evt.pageX - this.getPageLeft(this.$refs.body) + this.$refs.main.scrollLeft;
+			const grabOffsetY = parseFloat(evt.dataTransfer.getData('fhc-grab-offset-y')) || 0;
+			const grabOffsetX = parseFloat(evt.dataTransfer.getData('fhc-grab-offset-x')) || 0;
+
+			if (this.flipAxis)
+			{
+				mouse = evt.pageX - this.getPageLeft(this.$refs.body) + this.$refs.scroller.scrollLeft - grabOffsetX;
 				mouseFrac = mouse / this.$refs.body.offsetWidth;
-			} else {
+			}
-				mouse = evt.pageY - this.getPageTop(this.$refs.body) + this.$refs.main.scrollTop;
+			else
+			{
+				mouse = evt.pageY - this.getPageTop(this.$refs.body) + this.$refs.scroller.scrollTop - grabOffsetY;
 				mouseFrac = mouse / this.$refs.body.offsetHeight;
 			}
 
-			return dayTimestamp + this.start + Math.floor((this.end - this.start) * mouseFrac);
+			let rawTimestamp = dayTimestamp + this.start + Math.floor((this.end - this.start) * mouseFrac);
+			let fiveMinutes = 5 * 60 * 1000;
+			return Math.round(rawTimestamp / fiveMinutes) * fiveMinutes;
 		},
 
 		/* SCROLLING */
@@ -308,7 +325,153 @@ export default {
 			} else {
 				this.$refs.scroller.scrollTo(0, 0);
 			}
-		}
+		},
+		calculateNettoDuration(start, end) {
+			const startDay = start.startOf('day');
+			const blocks = this.axisPartsWithBreaks.filter(p => p.index !== undefined);
+
+			let nettoDuration = luxon.Duration.fromMillis(0);
+
+			for (const block of blocks)
+			{
+				const blockStart = startDay.plus(block.start);
+				const blockEnd = startDay.plus(block.end);
+
+				const overlapStart = blockStart > start ? blockStart : start;
+				const overlapEnd = blockEnd < end ? blockEnd : end;
+
+				if (overlapStart < overlapEnd) {
+					nettoDuration = nettoDuration.plus(overlapEnd.diff(overlapStart));
+				}
+			}
+
+			return nettoDuration;
+		},
+
+		calculateDropEnd(dropStart, durationMs) {
+			const duration = luxon.Duration.fromMillis(durationMs);
+			const blocks = this.axisPartsWithBreaks.filter(p => p.index !== undefined);
+			let accumulated = luxon.Duration.fromMillis(0);
+
+			for (const block of blocks)
+			{
+				const blockStart = dropStart.startOf('day').plus(block.start);
+				const blockEnd = dropStart.startOf('day').plus(block.end);
+
+				if (blockEnd <= dropStart) continue;
+
+				const relevantStart = blockStart > dropStart ? blockStart : dropStart;
+				const relevantDuration = blockEnd.diff(relevantStart);
+
+				accumulated = accumulated.plus(relevantDuration);
+
+				if (accumulated >= duration)
+				{
+					const overflow = accumulated.minus(duration);
+					return blockEnd.minus(overflow);
+				}
+			}
+
+			const lastBlock = blocks[blocks.length - 1];
+			return dropStart.startOf('day').plus(lastBlock.end);
+		},
+
+		onDropSnap(evt, items, date, part) {
+			let obj = items;
+			if (!obj?.orig) return;
+
+			const dayStr = evt?.currentTarget?.dataset?.day;
+			const dropDay = dayStr ? luxon.DateTime.fromISO(dayStr) : date;
+
+			const rawTimestamp = this.getTimestampFromMouse(evt, dropDay.toMillis());
+			const grabTime = luxon.DateTime.fromMillis(rawTimestamp);
+
+			const blocks = this.axisPartsWithBreaks.filter(p => p.index !== undefined);
+			const grabOffset = grabTime.diff(dropDay);
+
+			const snappedPart = blocks.find(b => grabOffset >= b.start && grabOffset < b.end) || part;
+			const dropStart = dropDay.plus(snappedPart.start);
+
+			let nettoDuration = this._getNettoDurationForDrop(obj);
+			let dropEnd = this.calculateDropEnd(dropStart, nettoDuration);
+
+			this.onDrop?.({
+				item: [obj],
+				start: dropStart.toISO(),
+				end: dropEnd.toISO(),
+				ctrlKey: !!(evt?.ctrlKey || evt?.metaKey)
+			});
+		},
+
+		_getNettoDurationForDrop(obj) {
+			if (obj.orig?.isostart && obj.orig?.isoend)
+			{
+				const s = luxon.DateTime.fromISO(obj.orig.isostart);
+				const e = luxon.DateTime.fromISO(obj.orig.isoend);
+				if (s.isValid && e.isValid)
+					return this.calculateNettoDuration(s, e);
+			}
+
+			if (obj.stundenblockung)
+			{
+				let blocks = this.axisPartsWithBreaks.filter(p => p.index !== undefined);
+				let firstBlock = blocks[0];
+				let blockMinutes = luxon.Duration.fromISO(firstBlock.end).minus(luxon.Duration.fromISO(firstBlock.start)).as('minutes');
+				if (!Number.isFinite(blockMinutes) || blockMinutes <= 0) blockMinutes = 45;
+				return luxon.Duration.fromObject({ minutes: obj.stundenblockung * blockMinutes });
+			}
+
+			return luxon.Duration.fromObject({ minutes: 45 });
+		},
+		onDropFree(evt, items, date)
+		{
+			let obj = items;
+			if (!obj?.orig)
+				return;
+
+			const timestamp = this.getTimestampFromMouse(evt, date);
+			const dropStart = luxon.DateTime.fromMillis(timestamp);
+
+			let nettoDuration = this._getNettoDurationForDrop(obj);
+			let dropEnd = this.calculateDropEnd(dropStart, nettoDuration);
+
+			this.onDrop?.({
+				item: [obj],
+				start: dropStart.toISO(),
+				end: dropEnd.toISO(),
+				ctrlKey: !!(evt?.ctrlKey || evt?.metaKey)
+			});
+		},
+		handleResizeStart({ edge, evt, el, event })
+		{
+			const gridEl = this.$refs.body;
+
+			if (!gridEl)
+				return;
+
+			this.resizeHandler.startResize(edge, evt, {
+				el,
+				gridEl,
+				event,
+				timeGrid: this.timeGrid,
+				onEnd: ({ event, newStart, newEnd }) => {
+					const orig = event?.orig;
+					if (!orig || !newStart || !newEnd)
+						return;
+
+					this.onResize?.({
+						item: [{ type: 'kalender', id: orig.kalender_id, orig }],
+						start: newStart,
+						end: newEnd
+					});
+				}
+			});
+		},
+	},
+	setup()
+	{
+		const resizeHandler = useResizeHandler();
+		return { resizeHandler };
 	},
 	beforeUnmount() {
 		this.disableAutoScroll();
@@ -318,6 +481,7 @@ export default {
 		class="fhc-calendar-base-grid"
 		style="display:grid;width:100%;height:100%;overflow:auto"
 		:style="'grid-template-' + axisRow + 's:auto' + (allDayEvents ? ' auto ' : ' ') + '1fr;grid-template-' + axisCol + 's:auto ' + styleGridCols"
+		data-cy="calendar-base-grid"
 	>
 		<div
 			class="grid-header"
@@ -382,11 +546,11 @@ export default {
 					ref="body"
 					class="grid-body"
 					style="display:grid;grid-template-rows:subgrid;grid-template-columns:subgrid"
+					@dragenter="isDragging = true"
+					@dragleave.self="isDragging = false"
+					@dragend="isDragging = false"
+					@drop="isDragging = false"
 					:style="'grid-' + axisCol + ':2/-1;grid-' + axisRow + ':1/-1'"
-					v-cal-dnd:dropcage
-					@calendar-dragenter="dragging = true"
-					@calendar-dragleave="dragging = false"
-					@dragover="dropAllowed ? $event.preventDefault() : null"
 				>
 					<template
 						v-for="(date, index) in axisMain"
@@ -398,12 +562,16 @@ export default {
 							class="part-body"
 							style="position:relative"
 							:style="'grid-' + axisCol + ':' + (1+index) + ';grid-' + axisRow + ':ps_' + i + '/pe_' + i"
+							:data-drop-index="index * axisPartsSave.length + i + 1"
+							data-cy="calendar-grid-part"
 						>
 							<slot name="part-body" v-bind="{ index, part }" />
 							<div
-								v-if="snapToGrid && dragging"
+								v-if="snapToGrid"
-								style="position:absolute;inset:0;z-index:1"
+								style="position:absolute;inset:0"
-								v-cal-dnd:dropzone.once="{date: date.plus(part.start || part), ends: ends.slice(ends.findIndex(end => end > date))}"
+								:style="{ zIndex: isDragging ? 10 : 1 }"
+								:data-day="date.toFormat('yyyy-MM-dd')"
+								v-drop:move.lehreinheit.kalender.reservierung="(evt, item) => onDropSnap(evt, item, date, part)"
 							></div>
 						</div>
 						<grid-line
@@ -413,6 +581,7 @@ export default {
 							:events="eventsNormal[index]"
 							:backgrounds="backgrounds[index]"
 							style="position:relative"
+							@resize-start="handleResizeStart"
 							:style="'grid-' + axisRow + ':1/-1;grid-' + axisCol + ':' + (1+index)"
 						>
 							<template #event="slot">
@@ -420,9 +589,10 @@ export default {
 							</template>
 							<template #dropzone>
 								<div
-									v-if="!snapToGrid && dragging"
+									v-if="!snapToGrid"
-									style="position:absolute;inset:0;z-index:1"
+									style="position:absolute;inset:0"
-									v-cal-dnd:dropzone="evt => getTimestampFromMouse(evt, date)"
+									:style="{ zIndex: isDragging ? 10 : 1 }"
+									v-drop:move.lehreinheit.kalender.reservierung="(evt, item) => onDropFree(evt, item, date)"
 								></div>
 							</template>
 						</grid-line>
@@ -432,4 +602,4 @@ export default {
 		</div>
 	</div>
 	`
-}
+}

public/js/components/Calendar/Base/Grid/Line.js

@@ -12,7 +12,17 @@ export default {
 		LineEvent,
 		LineBackground,
 	},
-	inject: ["axisRow", "shouldCompactEvents", "compactibleEventTypes"],
+	inject: {
+		axisRow: "axisRow",
+		shouldCompactEvents: {
+			from: "shouldCompactEvents",
+			default: undefined,
+		},
+		compactibleEventTypes: {
+			from: "compactibleEventTypes",
+			default: undefined,
+		},
+	},
 	props: {
 		date: {
 			type: luxon.DateTime,
@@ -123,6 +133,7 @@ export default {
 	template: /* html */ `
 	<div
 		class="fhc-calendar-base-grid-line"
+		:data-day="date.toISODate()"
 		style="position:relative;display:grid;grid-auto-flow:dense"
 		:style="'grid-template-' + axisRow + 's:subgrid'"
 	>
@@ -137,6 +148,7 @@ export default {
 				v-if="!event.display || event.display === 'default'"
 				:style="'grid-' + axisRow + ': ' + event.rows.join('/')"
 				:event="event"
+				@resize-start="$emit('resize-start', $event)"
 			>
 				<template v-slot="slot">
 					<slot name="event" v-bind="slot" />

public/js/components/Calendar/Base/Grid/Line/Event.js

@@ -1,15 +1,41 @@
-import CalDnd from '../../../../../directives/Calendar/DragAndDrop.js';
+import draggable from '../../../../../directives/draggable.js';
+import drop from '../../../../../directives/drop.js';
 import CalClick from '../../../../../directives/Calendar/Click.js';
 
 export default {
 	name: "GridLineEvent",
 	directives: {
-		CalDnd,
+		draggable,
+		drop,
 		CalClick
 	},
+	emits: [
+		'resize-start'
+	],
+	data() {
+		return {
+			contextMenu: {
+				show: false,
+				x: 0,
+				y: 0
+			}
+		};
+	},
 	inject: {
 		draggableEvents: "draggableEvents",
-		mode: "mode"
+		resizableEvents: {
+			from: "resizableEvents",
+			default: () => () => false
+		},
+		mode: "mode",
+		contextMenuActions: {
+			from: "contextMenuActions",
+			default: () => ({})
+		},
+		onDrop: {
+			from: "onDrop",
+			default: () => null
+		}
 	},
 	props: {
 		event: {
@@ -27,6 +53,9 @@ export default {
 		draggable() {
 			return !this.isHeaderOrFooter && this.draggableEvents(this.event.orig, this.mode);
 		},
+		resizable() {
+			return !this.isHeaderOrFooter && this.resizableEvents(this.event.orig, this.mode);
+		},
 		classes() {
 			const classes = [];
 			if (this.isHeaderOrFooter) {
@@ -37,21 +66,135 @@ export default {
 				if (this.event.endsHere)
 					classes.push('event-end');
 			}
-			return classes
+
+			classes.push(`calender_id-${this.event.orig.kalender_id}`);
+			return classes;
+		},
+		dragKalenderCollection() {
+			const orig = this.event.orig;
+			return {
+				type: 'kalender',
+				id: orig?.kalender_id ?? null,
+				orig,
+			};
+		},
+		activeContextActions() {
+			if (this.isHeaderOrFooter) return [];
+			const type = this.event.orig?.type ?? 'lehreinheit';
+			return this.contextMenuActions[type] ?? this.contextMenuActions['default'] ?? [];
 		}
 	},
-	template: /* html */`
+	methods: {
+		onResizeStart(edge, evt) {
+			this.$emit('resize-start', {
+				edge,
+				evt,
+				el: this.$refs.eventEl,
+				event: this.event
+			});
+		},
+		onRightClick(evt) {
+			this.contextMenu.show = true;
+			this.contextMenu.x = evt.clientX;
+			this.contextMenu.y = evt.clientY;
+		},
+		onContextAction(action) {
+			this.contextMenu.show = false;
+			action(this.event.orig);
+		},
+		closeContextMenu() {
+			this.contextMenu.show = false;
+		},
+		onDragStart(evt) {
+			const rect = this.$refs.eventEl.getBoundingClientRect();
+			evt.dataTransfer.setData('fhc-grab-offset-y', evt.clientY - rect.top);
+			evt.dataTransfer.setData('fhc-grab-offset-x', evt.clientX - rect.left);
+		},
+		onDropOnCard(evt, items) {
+			if (this.isHeaderOrFooter || !this.onDrop)
+				return;
+
+			const list = Array.isArray(items) ? items : [items];
+			const obj = list[0];
+			if (!obj)
+				return;
+
+			if ((evt.ctrlKey || evt.metaKey) && obj.type === 'lehreinheit')
+			{
+				return this.onDrop({
+					item: [obj],
+					ctrlKey: true,
+					targetKalenderId: this.event.orig?.kalender_id ?? null
+				});
+			}
+
+			return this.onDrop({
+				item: [obj],
+				start: this.event.start.toISO(),
+				end: this.event.end.toISO(),
+				ctrlKey: false,
+				targetKalenderId: null
+			});
+		},
+	},
+	template:`
 	<div
 		class="fhc-calendar-base-grid-line-event event"
 		:class="classes"
-		style="z-index: 1"
+		style="z-index: 11"
 		:draggable="draggable"
-		v-cal-dnd:draggable="event"
+		:data-id="'event-' + event.orig.kalender_id"
+		:data-group-id="'event-group-' + event.orig.eindeutige_kalender_gruppen_id"
+		ref="eventEl"
+		@dragstart="onDragStart"
+		v-draggable:move.noimage="draggable ? dragKalenderCollection : {}"
+		v-drop:move.lehreinheit.kalender.reservierung="onDropOnCard"
 		v-cal-click:event="isHeaderOrFooter ? event : event.orig"
+		@contextmenu.prevent="onRightClick"
+		data-cy="calendar-event"
 	>
+		<div
+			v-if="resizable"
+			class="fhc-resize-bar fhc-resize-bar--top"
+			@pointerdown.prevent.stop="onResizeStart('start', $event)"
+			@click.stop
+		>
+			<i class="fa-solid fa-grip-lines text-muted"></i>
+		</div>
 		<slot :event="isHeaderOrFooter ? event : event.orig">
 			{{ event.orig }}
 		</slot>
+		<div
+			v-if="resizable"
+			class="fhc-resize-bar fhc-resize-bar--bottom"
+			@pointerdown.prevent.stop="onResizeStart('end', $event)"
+			@click.stop
+		>
+			<i class="fa-solid fa-grip-lines text-muted"></i>
+		</div>
+
+	
+		<teleport to="body">
+			<div
+				v-if="contextMenu.show"
+				style="position:fixed; inset:0; z-index:9998"
+				@click="closeContextMenu"
+				@contextmenu.prevent="closeContextMenu"
+			/>
+			<ul
+				v-if="contextMenu.show"
+				class="dropdown-menu show"
+				:style="{ position: 'fixed', top: contextMenu.y + 'px', left: contextMenu.x + 'px', zIndex: 9999 }"
+				data-cy="eventContextMenu"
+			>
+				<li v-for="action in activeContextActions" :key="action.label">
+					<button class="dropdown-item" type="button" @click.stop="onContextAction(action.action)">
+						<i v-if="action.icon" :class="action.icon + ' me-2'"></i>
+						{{ action.label }}
+					</button>
+				</li>
+			</ul>
+		</teleport>
 	</div>
 	`
 }

public/js/components/Calendar/Base/Grid/Line/EventCard.js

@@ -0,0 +1,36 @@
+import draggable from '../../../../../directives/draggable.js';
+
+export default {
+	name: 'EventCard',
+	directives: {
+		draggable,
+	},
+	props: {
+		event: { type: Object, required: true },
+		parked: Boolean
+	},
+	computed: {
+		dragKalenderCollection() {
+			return this.event
+		},
+		topicString() {
+			return Array.isArray(this.event.orig.topic) ? this.event.orig.topic.join(', ') : this.event.orig.topic;
+		},
+	},
+	template: `
+	<div
+		class="fhc-calendar-base-grid-line-event event"
+		v-draggable:move.noimage="dragKalenderCollection"
+		style="border:1px"
+		data-cy="calendar-event"
+	>
+		<div class="title">
+			{{ topicString || event.orig.titel || event.orig.lehrfach }}
+		</div>
+		<div>
+			{{ event.orig.datum }} {{ event.orig.beginn }}–{{ event.orig.ende }}
+			<span v-if="event.ort_kurzbz">· {{ event.orig.ort_kurzbz }}</span>
+		</div>
+	</div>
+`
+};

public/js/components/Calendar/Base/Header.js

@@ -24,7 +24,8 @@ export default {
 		btnMonth: Boolean,
 		btnWeek: Boolean,
 		btnDay: Boolean,
-		btnList: Boolean
+		btnList: Boolean,
+		btnTableList: Boolean
 	},
 	emits: [
 		"next",
@@ -89,6 +90,16 @@ export default {
 					>
 						<i class="fa fa-table-list"></i>
 					</button>
+					
+					<button
+						v-if="btnTableList"
+						type="button"
+						class="btn btn-outline-secondary"
+						:class="{active: mode === 'tableList'}"
+						@click="clickMode($event, 'tableList')"
+					>
+						<i class="fa fa-table-list"></i>
+					</button>
 				</div>
 			</div>
 		</div>

public/js/components/Calendar/Base/Header/Datepicker.js

@@ -39,6 +39,7 @@ export default {
 			case "list":
 				return [this.convertedDate.startOf('day').ts, this.convertedDate.startOf('day').plus({ days: this.listLength }).ts - 1];
 			case "week":
+			case "tableList":
 				return [this.convertedDate.startOf('week', { useLocaleWeeks: true }).ts, this.convertedDate.endOf('week', { useLocaleWeeks: true }).ts];
 			case "day":
 				return this.convertedDate;
@@ -51,6 +52,7 @@ export default {
 			case "month":
 				return this.date.toLocaleString({ month: 'long', year: 'numeric' });
 			case "week":
+			case "tableList":
 				var year = this.date.localWeekYear;
 				var week = this.date.toFormat('nn');
 				return this.$p.t('calendar/year_kw', { year, week });
@@ -76,6 +78,7 @@ export default {
 				break;
 			case "list":
 			case "week":
+			case "tableList":
 				date = luxon.DateTime.fromJSDate(value[0]).setZone(this.timezone, { keepLocalTime: true }).setLocale(this.locale);
 				break;
 			case "day":
@@ -96,7 +99,7 @@ export default {
 		@update:model-value="update"
 		:format="() => title"
 		:month-picker="mode == 'month'"
-		:week-picker="mode == 'week'"
+		:week-picker="mode == 'week' || mode == 'tableList'"
 		:range="mode == 'list' ? { autoRange: listLength - 1 } : false"
 		:text-input="mode == 'day'"
 		:week-start="weekStart"

public/js/components/Calendar/LvPlan.js

@@ -182,17 +182,17 @@ export default {
 			>
 				<component
 					v-if="mode == 'event'"
-					:is="renderers[event.type]?.modalContent"
+					:is="renderers?.[event.type]?.modalContent"
 					:event="event"
 				></component>
 				<component
 					v-else-if="mode == 'eventheader'"
-					:is="renderers[event.type]?.modalTitle"
+					:is="renderers?.[event.type]?.modalTitle"
 					:event="event"
 				></component>
 				<component
 					v-else
-					:is="renderers[event.type]?.calendarEvent"
+					:is="renderers?.[event.type]?.calendarEvent"
 					:event="event"
 					:timeSlotDisplayBehavior="
 						$props.mode.toLowerCase() === 'list' ? 'always' : 'default'

public/js/components/Calendar/Mode/List/View.js

@@ -1,7 +1,8 @@
 import LabelDay from '../../Base/Label/Day.js';
 import LabelDow from '../../Base/Label/Dow.js';
 
-import CalDnd from '../../../../directives/Calendar/DragAndDrop.js';
+import draggable from '../../../../directives/draggable.js';
+
 import CalClick from '../../../../directives/Calendar/Click.js';
 
 // TODO(chris): drag and drop
@@ -13,7 +14,7 @@ export default {
 		LabelDow
 	},
 	directives: {
-		CalDnd,
+		draggable,
 		CalClick
 	},
 	inject: {
@@ -86,7 +87,7 @@ export default {
 					v-else
 					class="event"
 					:draggable="draggable(event)"
-					v-cal-dnd:draggable="event"
+					v-draggable="event.orig"
 					v-cal-click:event="event.orig"
 				>
 					<slot :event="event.orig" mode="list" />

public/js/components/Calendar/Mode/Month/View.js

@@ -36,7 +36,9 @@ export default {
 					}
 				}
 				return events;
-			})
+			}),
+			draggableEvents: () => false,
+			resizableEvents: () => false
 		};
 	},
 	inject: {

public/js/components/Calendar/Mode/Table.js

@@ -0,0 +1,109 @@
+import BaseSlider from '../Base/Slider.js';
+import TableView from './Table/View.js';
+
+export default {
+	name: "ModeTable",
+	components: {
+		BaseSlider,
+		TableView
+	},
+	props: {
+		currentDate: {
+			type: luxon.DateTime,
+			required: true
+		}
+	},
+	emits: [
+		"update:currentDate",
+		"update:range",
+		"click",
+		"requestModalOpen"
+	],
+	data() {
+		return {
+			focusDate: this.currentDate,
+			rangeOffset: 0
+		};
+	},
+	computed: {
+		range() {
+			let first = this.focusDate.startOf('week', { useLocaleWeeks: true });
+			let last = this.focusDate.endOf('week', { useLocaleWeeks: true });
+
+			if (this.rangeOffset != 0) {
+				if (this.rangeOffset < 0) {
+					first = first.plus({ weeks: this.rangeOffset });
+				} else {
+					last = last.plus({ weeks: this.rangeOffset });
+				}
+			}
+
+			return luxon.Interval.fromDateTimes(first, last);
+		}
+	},
+	watch: {
+		currentDate() {
+			if (this.currentDate.locale != this.focusDate.locale) {
+				this.focusDate = this.currentDate;
+				this.$emit('update:range', this.range);
+			} else {
+				this.rangeOffset = this.currentDate.startOf('week', { useLocaleWeeks: true }).diff(this.focusDate.startOf('week', { useLocaleWeeks: true }), 'weeks').weeks;
+				if (this.rangeOffset) {
+					this.$emit('update:range', this.range);
+					this.$refs.slider.slidePages(this.rangeOffset).then(this.updatePage);
+				}
+			}
+		}
+	},
+	methods: {
+		prevPage() {
+			this.rangeOffset = this.$refs.slider.target - 1;
+			this.$emit('update:range', this.range);
+			this.$refs.slider.prevPage().then(this.updatePage);
+		},
+		nextPage() {
+			this.rangeOffset = this.$refs.slider.target + 1;
+			this.$emit('update:range', this.range);
+			this.$refs.slider.nextPage().then(this.updatePage);
+		},
+		updatePage(weeks) {
+			const newFocusDate = this.focusDate.plus({ weeks });
+			this.focusDate = newFocusDate;
+			this.rangeOffset = 0;
+			this.$emit('update:currentDate', this.focusDate);
+			this.$emit('update:range', this.range);
+		},
+		viewAttrs(weeks) {
+			const day = this.focusDate.plus({ weeks });
+			return { ...this.$attrs, day };
+		},
+		handleClickDefaults(evt) {
+
+			switch (evt.detail.source) {
+				case 'day':
+					// default: Set current-date
+					this.$emit('update:currentDate', evt.detail.value);
+					break;
+				case 'event':
+					// default: Request Modal
+					this.$emit('requestModalOpen', { event: evt.detail.value });
+					break;
+			}
+		}
+	},
+	mounted() {
+		this.$emit('update:range', this.range);
+	},
+	template: `
+	<div
+		class="fhc-calendar-mode-week flex-grow-1 position-relative"
+		@cal-click-default.capture="handleClickDefaults"
+	>
+		<base-slider ref="slider" v-slot="slot">
+			<table-view ref="view" v-bind="viewAttrs(slot.offset)">
+				<template v-slot="slot"><slot v-bind="slot" mode="week" /></template>
+			</table-view>
+		</base-slider>
+	</div>
+	`
+}

public/js/components/Calendar/Mode/Table/View.js

@@ -0,0 +1,162 @@
+import {CoreFilterCmpt} from "../../../../components/filter/Filter.js";
+import BsModal from '../../../Bootstrap/Modal.js';
+import FormInput from "../../../Form/Input.js";
+import ApiDetails from "../../../../api/lehrveranstaltung/details.js";
+
+
+export default {
+	name: "TableView",
+	inject: {
+		events: "events",
+		timezone: "timezone",
+		tableActions: "tableActions",
+	},
+	components: {
+		CoreFilterCmpt,
+		BsModal,
+		FormInput
+	},
+	props: {
+		day: {
+			type: luxon.DateTime,
+			required: true
+		}
+	},
+	data()
+	{
+		return {
+			raumtyp_array: []
+		}
+	},
+	computed: {
+		start() {
+			return this.day.startOf('week', { useLocaleWeeks: true });
+		},
+		preparedEvents() {
+			const end = this.start.plus({ days: 7 });
+			return this.events
+				.filter(e => e.start < end && e.end > this.start)
+				.sort((a, b) => a.start.ts - b.start.ts)
+				.map(event => ({
+					...event.orig,
+					row_index: event.id,
+				}));
+		},
+		tabulatorOptions() {
+			return {
+				index: "row_index",
+				layout: 'fitDataStretch',
+				placeholder: "Keine Daten verfügbar",
+				persistenceID: "2026_03_09_table_view_v1",
+				data: this.preparedEvents,
+				columns: [
+					{
+						formatter: 'rowSelection',
+						titleFormatter: 'rowSelection',
+						titleFormatterParams: {
+							rowRange: "active"
+						},
+						headerSort: false,
+						width: 40
+					},
+					{title: 'Datum', field: 'datum', headerFilter: "input", formatter: (cell) => {
+							let val = cell.getValue();
+							if (!val)
+								return '&nbsp;';
+							return luxon.DateTime.fromISO(val).toFormat('dd.MM.yyyy')
+						}
+					},
+					{title: 'Von', field: 'beginn', headerFilter: "input"},
+					{title: 'Bis', field: 'ende', headerFilter: "input"},
+					{title: 'Lehrfach', field: 'lehrfach', headerFilter: "input"},
+					{title: 'Bezeichnung', field: 'lehrfach_bez', headerFilter: "input"},
+					{title: 'Lehrform', field: 'lehrform', headerFilter: "input"},
+					{title: 'Raum', field: 'ort_kurzbz', headerFilter: "input"},
+					{
+						title: 'Lektor',
+						field: 'lektor',
+						headerFilter: "input",
+						mutator: (value) => {
+							if (!value)
+								return '';
+							return value.map(l => l.kurzbz).join(', ') ?? '–'
+						}
+					},
+					{title: 'OE', field: 'organisationseinheit', headerFilter: "input"},
+					{title: 'Status', field: 'status_kurzbz', headerFilter: "input"},
+				]
+			}
+		}
+	},
+	methods:
+	{
+		openModal() {
+			this.$refs.raumModal.show();
+		},
+		async deleteSelected() {
+			let selected = this.$refs.tableViewTable?.tabulator?.getSelectedData() ?? [];
+
+			if (!selected.length) return;
+
+			let isConfirmed = await this.$fhcAlert.confirmDelete();
+
+			if (!isConfirmed) return;
+
+			await this.tableActions?.deleteEntries(selected)
+
+			this.$refs.tableViewTable.tabulator.deselectRow();
+		}
+	},
+	watch: {
+		preparedEvents(newData) {
+			this.$refs.tableViewTable?.tabulator?.setData(newData);
+		}
+	},
+/*	mounted() {
+
+		this.$api.call(ApiDetails.getRaumtyp())
+			.then(result => {
+				this.raumtyp_array = result.data;
+			})
+			.catch(this.$fhcAlert.handleSystemError);
+
+	},*/
+	template: /* html */`
+	<div class="fhc-calendar-mode-table-view h-100 overflow-auto">
+		<core-filter-cmpt
+			ref="tableViewTable"
+			:tabulator-options="tabulatorOptions"
+			:table-only="true"
+			:side-menu="false"
+			:download="true"
+		>
+			<template #actions>
+				<button @click="deleteSelected" class="btn btn-outline-danger btn-sm">Löschen</button>
+				<button class="btn btn-outline-secondary btn-sm">Verschieben</button>
+				<button @click="openModal" class="btn btn-outline-secondary btn-sm">Raum wechsel</button>
+			</template>
+		</core-filter-cmpt>
+		
+		<!--<bs-modal ref="raumModal" class="bootstrap-prompt" dialogClass="modal-lg">
+			<template #title>Raum verschiebung</template>
+				<form-input
+					:label="$p.t('lehre', 'raumtyp')"
+					type="select"
+					container-class="col-3"
+					name="raumtyp"
+				>
+				<option
+					v-for="raumtyp in raumtyp_array"
+					:value="raumtyp.raumtyp_kurzbz"
+					:key="raumtyp.raumtyp_kurzbz"
+				>
+					{{ raumtyp.raumtyp_kurzbz }} {{ raumtyp.beschreibung }}
+				</option>
+			</form-input>
+			<template #footer>
+				<button type="button" class="btn btn-primary">{{ $p.t('ui', 'speichern') }}</button>
+			</template>
+		</bs-modal>-->
+	</div>
+	`
+}

public/js/components/Calendar/Mode/Week/View.js

@@ -13,7 +13,8 @@ export default {
 	},
 	inject: {
 		timeGrid: "timeGrid",
-		timezone: "timezone"
+		timezone: "timezone",
+		hoursPlan: { from: "hoursPlan", default: null },
 	},
 	props: {
 		day: {
@@ -39,8 +40,9 @@ export default {
 					};
 				});
 			} else {
-				// create 07:00-23:00
+				const start = this.hoursPlan?.start ?? 7;
-				return Array.from({ length: 17 }, (e, i) => luxon.Duration.fromObject({ hours: i + 7 }));
+				const end = this.hoursPlan?.end ?? 23;
+				return Array.from({ length: end - start + 1 }, (e, i) => luxon.Duration.fromObject({ hours: i + start }));
 			}
 		}
 	},