<?php

if (! defined('BASEPATH')) exit('No direct script access allowed');

class Students extends FHC_Controller
{
	public function __construct()
	{
		// TODO(chris): access!
		parent::__construct();

		// Load Libraries
		$this->load->library('AuthLib');
		$this->load->library('VariableLib', ['uid' => getAuthUID()]);
	}

	/**
	 * Remap calls:
	 * /													=> return []
	 * /inout												=> return []
	 * /inout/incoming										=> getIncoming
	 * /inout/outgoing										=> getOutgoing
	 * /inout/gemeinsamestudien								=> getGemeinsamestudien
	 * /(studiengang_kz)									=> getStudents
	 * /(studiengang_kz)/prestudent							=> getPrestudents
	 * /(studiengang_kz)/prestudent/*						=> getPrestudents
	 * /(studiengang_kz)/(semester)							=> getStudents
	 * /(studiengang_kz)/(semester)/grp/(gruppe_kurzbz)		=> getStudents
	 * /(studiengang_kz)/(semester)/(verband)				=> getStudents
	 * /(studiengang_kz)/(semester)/(verband)/(gruppe)		=> getStudents
	 * /(studiengang_kz)/(org_form)							=> getStudents
	 * /(studiengang_kz)/(org_form)/prestudent				=> getPrestudents
	 * /(studiengang_kz)/(org_form)/prestudent/*			=> getPrestudents
	 * /(studiengang_kz)/(org_form)/(semester)				=> getStudents
	 * /(studiengang_kz)/(org_form)/(semester)/grp/(gruppe_kurzbz)
	 * 														=> getStudents
	 * /(studiengang_kz)/(org_form)/(semester)/(verband)	=> getStudents
	 * /(studiengang_kz)/(org_form)/(semester)/(verband)/(gruppe)
	 * 														=> getStudents
	 * /uid/(student_uid)									=> getStudent
	 * /prestudent/(prestudent_id)                          => getPrestudent
	 *
	 * @param string		$method
	 * @param array			$params				(optional)
	 *
	 * @return void
	 */
	public function _remap($method, $params = [])
	{
		if ($method == '' || $method == 'index')
			return $this->outputJson([]);

		if ($method == 'inout') {
			if (!count($params))
				return $this->outputJson([]);
			switch ($params[0]) {
				case 'incoming':
					return $this->getIncoming();
				case 'outgoing':
					return $this->getOutgoing();
				case 'gemeinsamestudien':
					return $this->getGemeinsamestudien();
				default:
					return show_404();
			}
		}

		$count = count($params);
		if (!$count)
			return $this->getStudents($method);

		if ($method == 'uid' && $count == 1)
			return $this->getStudent($params[0]);

		if ($method == 'prestudent' && $count == 1)
			return $this->getPrestudent($params[0]);

		if (is_numeric($params[0])) {
			$sem = $params[0];
			if ($count == 3 && $params[1] == 'grp') {
				$g = $params[2];
				$ver = null;
				$grp = null;
			} else {
				$g = null;
				$ver = $count > 1 ? $params[1] : null;
				$grp = $count > 2 ? $params[2] : null;
			}
			return $this->getStudents($method, $sem, $ver, $grp, $g);
		} elseif ($params[0] == 'prestudent') {
			if ($count == 1)
				return $this->getPrestudents($method);
			if ($count == 2)
				return $this->getPrestudents($method, $params[1]);
			return $this->getPrestudents($method, $params[1], $params[$count-1]);
		} else {
			$org = $params[0];
			if ($count > 1 && $params[1] == 'prestudent') {
				if ($count == 2)
					return $this->getPrestudents(null, null, $org);
				if ($count == 3)
					return $this->getPrestudents($params[2], null, $org);
				return $this->getPrestudents($params[2], $params[$count-1], $org);
			}
			$sem = $count > 1 ? $params[1] : null;
			if ($count == 4 && $params[2] == 'grp') {
				$g = $params[3];
				$ver = null;
				$grp = null;
			} else {
				$g = null;
				$ver = $count > 2 ? $params[2] : null;
				$grp = $count > 3 ? $params[3] : null;
			}

			return $this->getStudents($method, $sem, $ver, $grp, $g, $org);
		}
		
		show_404();
	}

	/**
	 * @return void
	 */
	protected function getIncoming()
	{
		// TODO(chris): IMPLEMENT!
		$this->outputJson([]);
	}

	/**
	 * @return void
	 */
	protected function getOutgoing()
	{
		// TODO(chris): IMPLEMENT!
		$this->outputJson([]);
	}

	/**
	 * @return void
	 */
	protected function getGemeinsamestudien()
	{
		// TODO(chris): IMPLEMENT!
		$this->outputJson([]);
	}

	/**
	 * @param integer		$studiengang_kz
	 * @param string		$studiensemester_kurzbz			(optional)
	 * @param string		$filter							(optional)
	 * @param string		$orgform_kurzbz					(optional)
	 *
	 * @return void
	 */
	protected function getPrestudents($studiengang_kz, $studiensemester_kurzbz = null, $filter = null, $orgform_kurzbz = null)
	{
		// TODO(chris): @see: prestudent.class::loadInteressentenUndBewerber
		// TODO(chris): IMPLEMENT!
		$this->load->model('crm/Prestudent_model', 'PrestudentModel');

		$stdsemEsc = $this->PrestudentModel->escape($studiensemester_kurzbz);
		
		$this->PrestudentModel->addJoin('public.tbl_person p', 'person_id');
		#$this->PrestudentModel->addJoin('public.tbl_prestudentstatus ps', 'ps.status_kurzbz=public.get_rolle_prestudent(tbl_prestudent.prestudent_id, ' . $this->PrestudentModel->escape($studiensemester_kurzbz) . ') AND ps.prestudent_id=tbl_prestudent.prestudent_id');
		$this->PrestudentModel->addJoin('public.tbl_prestudentstatus ps', 'ps.status_kurzbz=public.get_rolle_prestudent(tbl_prestudent.prestudent_id, ' . $stdsemEsc . ') AND ps.prestudent_id=tbl_prestudent.prestudent_id AND ps.studiensemester_kurzbz=public.get_stdsem_prestudent(tbl_prestudent.prestudent_id, ' . $stdsemEsc . ') AND ps.ausbildungssemester=public.get_absem_prestudent(tbl_prestudent.prestudent_id, ' . $stdsemEsc . ')', 'LEFT');
		// TODO(chris): check what functions are returning when no entry exists
		
		$this->PrestudentModel->addSelect('p.person_id');
		$this->PrestudentModel->addSelect('tbl_prestudent.prestudent_id');
		$this->PrestudentModel->addSelect("'' AS uid");
		$this->PrestudentModel->addSelect('titelpre');
		$this->PrestudentModel->addSelect('titelpost');
		$this->PrestudentModel->addSelect('vorname');
		$this->PrestudentModel->addSelect('wahlname');
		$this->PrestudentModel->addSelect('vornamen');
		$this->PrestudentModel->addSelect('geschlecht');
		$this->PrestudentModel->addSelect('nachname');
		$this->PrestudentModel->addSelect('gebdatum');
		$this->PrestudentModel->addSelect('tbl_prestudent.anmerkung');
		$this->PrestudentModel->addSelect('ersatzkennzeichen');
		$this->PrestudentModel->addSelect('svnr');
		$this->PrestudentModel->addSelect("'' AS matrikelnr");
		$this->PrestudentModel->addSelect('p.anmerkung AS anmerkungen');
		$this->PrestudentModel->addSelect("'' AS semester");
		$this->PrestudentModel->addSelect("'' AS verband");
		$this->PrestudentModel->addSelect("'' AS gruppe");
		$this->PrestudentModel->addSelect('tbl_prestudent.studiengang_kz');
		$this->PrestudentModel->addSelect('aufmerksamdurch_kurzbz');
		$this->PrestudentModel->addSelect('mentor');
		$this->PrestudentModel->addSelect('FALSE AS bnaktiv');
		$this->PrestudentModel->addSelect(
			"(SELECT kontakt FROM public.tbl_kontakt WHERE kontakttyp='email' AND person_id=p.person_id AND zustellung LIMIT 1) AS email_privat",
			false
		);
		$this->PrestudentModel->addSelect(
			"(SELECT rt_gesamtpunkte AS punkte FROM public.tbl_prestudent WHERE prestudent_id=s.prestudent_id) AS punkte",
			false
		);
		$this->PrestudentModel->addSelect('tbl_prestudent.dual');
		$this->PrestudentModel->addSelect('tbl_prestudent.reihungstest_id');
		$this->PrestudentModel->addSelect('tbl_prestudent.anmeldungreihungstest');
		$this->PrestudentModel->addSelect('p.matr_nr');
		$this->PrestudentModel->addSelect('tbl_prestudent.gsstudientyp_kurzbz');
		$this->PrestudentModel->addSelect('tbl_prestudent.aufnahmegruppe_kurzbz');
		$this->PrestudentModel->addSelect('tbl_prestudent.priorisierung');
		$this->PrestudentModel->addSelect('p.zugangscode');
		$this->PrestudentModel->addSelect('p.bpk');

		$this->PrestudentModel->addOrder('nachname');
		$this->PrestudentModel->addOrder('vorname');

		$where = [];
		if ($orgform_kurzbz) {
			$where['ps.orgform_kurzbz'] = $orgform_kurzbz;
		}

		switch ($filter) {
			case "interessenten":
				$where['ps.status_kurzbz'] = 'Interessent';
				break;
			case "bewerbungnichtabgeschickt":
				$where['ps.status_kurzbz'] = 'Interessent';
				$where['bewerbung_abgeschicktamum'] = null;
				break;
			case "bewerbungabgeschickt":
				$where['ps.status_kurzbz'] = 'Interessent';
				$where['bewerbung_abgeschicktamum IS NOT'] = null;
				$where['bestaetigtam'] = null;
				break;
			case "statusbestaetigt":
				$where['ps.status_kurzbz'] = 'Interessent';
				$where['bestaetigtam IS NOT'] = null;
				break;
			case "statusbestaetigtrtnichtangemeldet":
				$where['ps.status_kurzbz'] = 'Interessent';
				$where['bestaetigtam IS NOT'] = null;
				$this->PrestudentModel->db->where('NOT EXISTS(SELECT 1 FROM public.tbl_rt_person JOIN public.tbl_reihungstest r ON (rt_id = reihungstest_id) WHERE person_id=p.person_id AND studienplan_id IN (SELECT studienplan_id FROM lehre.tbl_studienplan JOIN lehre.tbl_studienordnung o USING(studienordnung_id) WHERE o.studiengang_kz=tbl_prestudent.studiengang_kz) AND r.studiensemesterkurzbz=' . $stdsemEsc . ')', null, false);
				break;
			case "statusbestaetigtrtangemeldet":
				$where['ps.status_kurzbz'] = 'Interessent';
				$where['bestaetigtam IS NOT'] = null;
				$this->PrestudentModel->db->where('EXISTS(SELECT 1 FROM public.tbl_rt_person JOIN public.tbl_reihungstest r ON (rt_id = reihungstest_id) WHERE person_id=p.person_id AND studienplan_id IN (SELECT studienplan_id FROM lehre.tbl_studienplan JOIN lehre.tbl_studienordnung o USING(studienordnung_id) WHERE o.studiengang_kz=tbl_prestudent.studiengang_kz) AND r.studiensemesterkurzbz=' . $stdsemEsc . ')', null, false);
				break;
			case "zgv":
				$this->load->model('organisation/Studiengang_model', 'StudiengangModel');

				$result = $this->StudiengangModel->load($studiengang_kz);
				if (isError($result)) {
					$this->output->set_status_header(REST_Controller::HTTP_INTERNAL_SERVER_ERROR);
					return $this->outputJson(getError($result));
				} elseif (!hasData($result)) {
					$this->output->set_status_header(REST_Controller::HTTP_BAD_REQUEST);
					// TODO(chris): phrase
					return $this->outputJson("Studiengang does not exist");
				}
				$stg = current(getData($result));

				$where['ps.status_kurzbz'] = 'Interessent';
				
				if ($stg->typ == 'm') {
					$where['zgvmas_code IS NOT'] = null;
					if (defined('ZGV_ERFUELLT_ANZEIGEN') && ZGV_ERFUELLT_ANZEIGEN)
						$where['zgvmas_erfuellt'] = true;
				} elseif ($stg->typ == 'p') {
					$where['zgvdoktor_code IS NOT'] = null;
					if (defined('ZGV_DOKTOR_ANZEIGEN') && ZGV_DOKTOR_ANZEIGEN)
						$where['zgvdoktor_erfuellt'] = true;
				} else {
					$where['zgv_code IS NOT'] = null;
					if (defined('ZGV_ERFUELLT_ANZEIGEN') && ZGV_ERFUELLT_ANZEIGEN)
						$where['zgv_erfuellt'] = true;
				}
				break;
			case "reihungstestangemeldet":
				$where['ps.status_kurzbz'] = 'Interessent';
				$this->PrestudentModel->db->where('EXISTS(SELECT 1 FROM public.tbl_rt_person JOIN public.tbl_reihungstest r ON (rt_id = reihungstest_id) WHERE person_id=p.person_id AND studienplan_id IN (SELECT studienplan_id FROM lehre.tbl_studienplan JOIN lehre.tbl_studienordnung o USING(studienordnung_id) WHERE o.studiengang_kz=tbl_prestudent.studiengang_kz) AND r.studiensemesterkurzbz=' . $stdsemEsc . ')', null, false);
				break;
			case "reihungstestnichtangemeldet":
				$where['ps.status_kurzbz'] = 'Interessent';
				$this->PrestudentModel->db->where('NOT EXISTS(SELECT 1 FROM public.tbl_rt_person JOIN public.tbl_reihungstest r ON (rt_id = reihungstest_id) WHERE person_id=p.person_id AND studienplan_id IN (SELECT studienplan_id FROM lehre.tbl_studienplan JOIN lehre.tbl_studienordnung o USING(studienordnung_id) WHERE o.studiengang_kz=tbl_prestudent.studiengang_kz) AND r.studiensemesterkurzbz=' . $stdsemEsc . ')', null, false);
				break;
			case "bewerber":
				$where['ps.status_kurzbz'] = 'Bewerber';
				break;
			case "aufgenommen":
				$where['ps.status_kurzbz'] = 'Aufgenommener';
				break;
			case "warteliste":
				$where['ps.status_kurzbz'] = 'Wartender';
				break;
			case "absage":
				$where['ps.status_kurzbz'] = 'Abgewiesener';
				break;
			case "absolvent":
				$where['ps.status_kurzbz'] = 'Absolvent';
				break;
			case "diplomand":
				$where['ps.status_kurzbz'] = 'Diplomand';
				break;
			default:
				if (!$studiensemester_kurzbz) {
					// TODO(chris): should work ... needs testing
					// we want all prestudents without status?
					$where['ps.status_kurzbz'] = null;
				} else {
					$this->PrestudentModel->db->where_in('ps.status_kurzbz', [
						'Interessent',
						'Bewerber',
						'Aufgenommener',
						'Wartender',
						'Abgewiesener'
					]);
				}
				break;
		}

		$this->outputJson([]);
	}

	/**
	 * @param integer		$studiengang_kz
	 * @param integer		$semester						(optional)
	 * @param string		$verband						(optional)
	 * @param integer		$gruppe							(optional)
	 * @param string		$gruppe_kurzbz					(optional)
	 * @param string		$orgform_kurzbz					(optional)
	 *
	 * @return void
	 */
	protected function getStudents($studiengang_kz, $semester = null, $verband = null, $gruppe = null, $gruppe_kurzbz = null, $orgform_kurzbz = null)
	{
		$studiensemester_kurzbz = $this->variablelib->getVar('semester_aktuell');
		
		$this->load->model('crm/Prestudent_model', 'PrestudentModel');

		$this->PrestudentModel->addJoin('public.tbl_person p', 'person_id');
		$this->PrestudentModel->addJoin('public.tbl_student s', 'prestudent_id');
		$this->PrestudentModel->addJoin('public.tbl_benutzer b', 's.student_uid=b.uid');
		$this->PrestudentModel->addJoin(
			'public.tbl_studentlehrverband v',
			'v.student_uid=s.student_uid AND v.studiensemester_kurzbz=' . $this->PrestudentModel->escape($studiensemester_kurzbz)
		);

		$this->PrestudentModel->addSelect('p.person_id');
		$this->PrestudentModel->addSelect('s.prestudent_id');
		$this->PrestudentModel->addSelect('b.uid');
		$this->PrestudentModel->addSelect('titelpre');
		$this->PrestudentModel->addSelect('titelpost');
		$this->PrestudentModel->addSelect('vorname');
		$this->PrestudentModel->addSelect('wahlname');
		$this->PrestudentModel->addSelect('vornamen');
		$this->PrestudentModel->addSelect('geschlecht');
		$this->PrestudentModel->addSelect('nachname');
		$this->PrestudentModel->addSelect('gebdatum');
		$this->PrestudentModel->addSelect('tbl_prestudent.anmerkung');
		$this->PrestudentModel->addSelect('ersatzkennzeichen');
		$this->PrestudentModel->addSelect('svnr');
		$this->PrestudentModel->addSelect('s.matrikelnr');
		$this->PrestudentModel->addSelect('p.anmerkung AS anmerkungen');
		$this->PrestudentModel->addSelect('v.semester');
		$this->PrestudentModel->addSelect('v.verband');
		$this->PrestudentModel->addSelect('v.gruppe');
		$this->PrestudentModel->addSelect('tbl_prestudent.studiengang_kz');
		$this->PrestudentModel->addSelect('aufmerksamdurch_kurzbz');
		$this->PrestudentModel->addSelect('mentor');
		$this->PrestudentModel->addSelect('b.aktiv AS bnaktiv');
		$this->PrestudentModel->addSelect(
			"(SELECT kontakt FROM public.tbl_kontakt WHERE kontakttyp='email' AND person_id=p.person_id AND zustellung LIMIT 1) AS email_privat",
			false
		);
		$this->PrestudentModel->addSelect(
			"(SELECT rt_gesamtpunkte AS punkte FROM public.tbl_prestudent WHERE prestudent_id=s.prestudent_id) AS punkte",
			false
		);
		$this->PrestudentModel->addSelect('tbl_prestudent.dual');
		$this->PrestudentModel->addSelect('tbl_prestudent.reihungstest_id');
		$this->PrestudentModel->addSelect('tbl_prestudent.anmeldungreihungstest');
		$this->PrestudentModel->addSelect('p.matr_nr');
		$this->PrestudentModel->addSelect('tbl_prestudent.gsstudientyp_kurzbz');
		$this->PrestudentModel->addSelect('tbl_prestudent.aufnahmegruppe_kurzbz');
		$this->PrestudentModel->addSelect('tbl_prestudent.priorisierung');
		$this->PrestudentModel->addSelect('p.zugangscode');
		$this->PrestudentModel->addSelect('p.bpk');

		$this->PrestudentModel->addOrder('nachname');
		$this->PrestudentModel->addOrder('vorname');


		$where = [];

		if ($gruppe_kurzbz !== null) {
			$this->PrestudentModel->addJoin('public.tbl_benutzergruppe g', 'uid');
			$where['g.gruppe_kurzbz'] = $gruppe_kurzbz;
			$where['g.studiensemester_kurzbz'] = $studiensemester_kurzbz;
		} else {
			$where['v.studiengang_kz'] = $studiengang_kz;

			if ($semester !== null)
				$where['v.semester'] = $semester;

			if ($verband !== null)
				$where['v.verband'] = $verband;

			if ($gruppe !== null)
				$where['v.gruppe'] = $gruppe;
	
			if (!$verband && !$gruppe && $orgform_kurzbz !== null) {
				$this->PrestudentModel->db->where(
					"(
						SELECT orgform_kurzbz 
						FROM public.tbl_prestudentstatus 
						WHERE prestudent_id=tbl_prestudent.prestudent_id 
						AND studiensemester_kurzbz=" . $this->PrestudentModel->escape($studiensemester_kurzbz) . " 
						ORDER BY datum DESC, insertamum DESC, ext_id DESC LIMIT 1
					)",
					$this->PrestudentModel->escape($orgform_kurzbz),
					false
				);
			}

		}

		$result = $this->PrestudentModel->loadWhere($where);
		
		if (isError($result)) {
			$this->output->set_status_header(REST_Controller::HTTP_INTERNAL_SERVER_ERROR);
			$this->outputJson(getError($result));
		} else {
			$this->outputJson(getData($result) ?: []);
		}
	}

	/**
	 * @param string		$prestudent_id
	 *
	 * @return void
	 */
	protected function getPrestudent($prestudent_id)
	{
		$studiensemester_kurzbz = $this->variablelib->getVar('semester_aktuell');

		$this->load->model('crm/Prestudent_model', 'PrestudentModel');

		$this->PrestudentModel->addJoin('public.tbl_person p', 'person_id');
		$this->PrestudentModel->addJoin('public.tbl_student s', 'prestudent_id', 'LEFT');
		$this->PrestudentModel->addJoin('public.tbl_benutzer b', 's.student_uid=b.uid', 'LEFT');
		$this->PrestudentModel->addJoin(
			'public.tbl_studentlehrverband v',
			'v.student_uid=s.student_uid AND v.studiensemester_kurzbz=' . $this->PrestudentModel->escape($studiensemester_kurzbz),
			'LEFT'
		);

		$this->PrestudentModel->addSelect('p.person_id');
		$this->PrestudentModel->addSelect('tbl_prestudent.prestudent_id');
		$this->PrestudentModel->addSelect('b.uid');
		$this->PrestudentModel->addSelect('titelpre');
		$this->PrestudentModel->addSelect('titelpost');
		$this->PrestudentModel->addSelect('vorname');
		$this->PrestudentModel->addSelect('wahlname');
		$this->PrestudentModel->addSelect('vornamen');
		$this->PrestudentModel->addSelect('geschlecht');
		$this->PrestudentModel->addSelect('nachname');
		$this->PrestudentModel->addSelect('gebdatum');
		$this->PrestudentModel->addSelect('tbl_prestudent.anmerkung');
		$this->PrestudentModel->addSelect('ersatzkennzeichen');
		$this->PrestudentModel->addSelect('svnr');
		$this->PrestudentModel->addSelect('s.matrikelnr');
		$this->PrestudentModel->addSelect('p.anmerkung AS anmerkungen');
		$this->PrestudentModel->addSelect('v.semester');
		$this->PrestudentModel->addSelect('v.verband');
		$this->PrestudentModel->addSelect('v.gruppe');
		$this->PrestudentModel->addSelect('tbl_prestudent.studiengang_kz');
		$this->PrestudentModel->addSelect('aufmerksamdurch_kurzbz');
		$this->PrestudentModel->addSelect('mentor');
		$this->PrestudentModel->addSelect('b.aktiv AS bnaktiv');
		$this->PrestudentModel->addSelect(
			"(SELECT kontakt FROM public.tbl_kontakt WHERE kontakttyp='email' AND person_id=p.person_id AND zustellung LIMIT 1) AS email_privat",
			false
		);
		$this->PrestudentModel->addSelect(
			"(SELECT rt_gesamtpunkte AS punkte FROM public.tbl_prestudent WHERE prestudent_id=s.prestudent_id) AS punkte",
			false
		);
		$this->PrestudentModel->addSelect('tbl_prestudent.dual');
		$this->PrestudentModel->addSelect('tbl_prestudent.reihungstest_id');
		$this->PrestudentModel->addSelect('tbl_prestudent.anmeldungreihungstest');
		$this->PrestudentModel->addSelect('p.matr_nr');
		$this->PrestudentModel->addSelect('tbl_prestudent.gsstudientyp_kurzbz');
		$this->PrestudentModel->addSelect('tbl_prestudent.aufnahmegruppe_kurzbz');
		$this->PrestudentModel->addSelect('tbl_prestudent.priorisierung');
		$this->PrestudentModel->addSelect('p.zugangscode');
		$this->PrestudentModel->addSelect('p.bpk');

		$result = $this->PrestudentModel->loadWhere([
			'tbl_prestudent.prestudent_id' => $prestudent_id
		]);

		if (isError($result)) {
			$this->output->set_status_header(REST_Controller::HTTP_INTERNAL_SERVER_ERROR);
			$this->outputJson(getError($result));
		} else {
			$this->outputJson(getData($result) ?: []);
		}
	}

	/**
	 * @param string		$student_uid
	 *
	 * @return void
	 */
	protected function getStudent($student_uid)
	{
		$studiensemester_kurzbz = $this->variablelib->getVar('semester_aktuell');

		$this->load->model('crm/Prestudent_model', 'PrestudentModel');

		$this->PrestudentModel->addJoin('public.tbl_person p', 'person_id');
		$this->PrestudentModel->addJoin('public.tbl_student s', 'prestudent_id');
		$this->PrestudentModel->addJoin('public.tbl_benutzer b', 's.student_uid=b.uid');
		$this->PrestudentModel->addJoin(
			'public.tbl_studentlehrverband v',
			'v.student_uid=s.student_uid AND v.studiensemester_kurzbz=' . $this->PrestudentModel->escape($studiensemester_kurzbz),
			'LEFT'
		);

		$this->PrestudentModel->addSelect('p.person_id');
		$this->PrestudentModel->addSelect('s.prestudent_id');
		$this->PrestudentModel->addSelect('b.uid');
		$this->PrestudentModel->addSelect('titelpre');
		$this->PrestudentModel->addSelect('titelpost');
		$this->PrestudentModel->addSelect('vorname');
		$this->PrestudentModel->addSelect('wahlname');
		$this->PrestudentModel->addSelect('vornamen');
		$this->PrestudentModel->addSelect('geschlecht');
		$this->PrestudentModel->addSelect('nachname');
		$this->PrestudentModel->addSelect('gebdatum');
		$this->PrestudentModel->addSelect('tbl_prestudent.anmerkung');
		$this->PrestudentModel->addSelect('ersatzkennzeichen');
		$this->PrestudentModel->addSelect('svnr');
		$this->PrestudentModel->addSelect('s.matrikelnr');
		$this->PrestudentModel->addSelect('p.anmerkung AS anmerkungen');
		$this->PrestudentModel->addSelect('v.semester');
		$this->PrestudentModel->addSelect('v.verband');
		$this->PrestudentModel->addSelect('v.gruppe');
		$this->PrestudentModel->addSelect('tbl_prestudent.studiengang_kz');
		$this->PrestudentModel->addSelect('aufmerksamdurch_kurzbz');
		$this->PrestudentModel->addSelect('mentor');
		$this->PrestudentModel->addSelect('b.aktiv AS bnaktiv');
		$this->PrestudentModel->addSelect(
			"(SELECT kontakt FROM public.tbl_kontakt WHERE kontakttyp='email' AND person_id=p.person_id AND zustellung LIMIT 1) AS email_privat",
			false
		);
		$this->PrestudentModel->addSelect(
			"(SELECT rt_gesamtpunkte AS punkte FROM public.tbl_prestudent WHERE prestudent_id=s.prestudent_id) AS punkte",
			false
		);
		$this->PrestudentModel->addSelect('tbl_prestudent.dual');
		$this->PrestudentModel->addSelect('tbl_prestudent.reihungstest_id');
		$this->PrestudentModel->addSelect('tbl_prestudent.anmeldungreihungstest');
		$this->PrestudentModel->addSelect('p.matr_nr');
		$this->PrestudentModel->addSelect('tbl_prestudent.gsstudientyp_kurzbz');
		$this->PrestudentModel->addSelect('tbl_prestudent.aufnahmegruppe_kurzbz');
		$this->PrestudentModel->addSelect('tbl_prestudent.priorisierung');
		$this->PrestudentModel->addSelect('p.zugangscode');
		$this->PrestudentModel->addSelect('p.bpk');

		$result = $this->PrestudentModel->loadWhere([
			's.student_uid' => $student_uid
		]);
		
		if (isError($result)) {
			$this->output->set_status_header(REST_Controller::HTTP_INTERNAL_SERVER_ERROR);
			$this->outputJson(getError($result));
		} else {
			$this->outputJson(getData($result) ?: []);
		}
	}
}