<?php

/*
 * Copyright 2014 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 2 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301, USA.
 * 
 *
 * Authors: Stefan Puraner	<puraner@technikum-wien.at>
 */

require_once(dirname(__FILE__) . '/basis_db.class.php');

class pruefungstermin extends basis_db{
    public $new;
    public $result = array();
    
    public $pruefungstermin_id;     //bigint
    public $pruefung_id;            //bigint
    public $von;                    //timestamp without timezone
    public $bis;                    //timestamp without timezone
    public $teilnehmer_max;         //smallint
    public $teilnehmer_min;         //smallint
    
    /**
     * Konstruktor
     * @param pruefungsfenster_id ID des zu ladenden Pruefungfensters
     */
    public function __construct($pruefungstermin_id = null) {
        parent::__construct();

        if ($pruefungstermin_id != null)
            $this->load($pruefungstermin_id);
    }

    public function __set($name, $value) {
        switch ($name) {
            case 'pruefungstermin_id':
                if (!is_numeric($value))
                    throw new Exception('Attribute pruefungstermin_id must be numeric!"');
                $this->$name = $value;
                break;
            default:
                $this->$name = $value;
        }
    }

    public function __get($name) {
        return $this->$name;
    }
    
    /**
     * Lädt einen Prüfungstermin
     * @param Integer Prüfungstermin ID
     */
    public function load($pruefungstermin_id)
    {
        if(!is_numeric($pruefungstermin_id))
        {
            $this->errormsg = "Pruefungstermin ID muss eine gültige Zahl sein";
            return false;
        }
        
        $qry = 'SELECT * FROM campus.tbl_pruefungstermin WHERE pruefungstermin_id='.$this->db_add_param($pruefungstermin_id).';';
        
        if($this->db_query($qry))
        {
            if($row = $this->db_fetch_object())
            {
                $this->pruefungstermin_id = $row->pruefungstermin_id;
                $this->pruefung_id = $row->pruefung_id;
                $this->von = $row->von;
                $this->bis = $row->bis;
                $this->teilnehmer_max = $row->teilnehmer_max;
                $this->teilnehmer_min = $row->teilnehmer_min;
            }
            return true;
        }
        else
        {
            $this->errormsg = 'Termin konnte nicht geladen werden.';
            return false;
        }
        
    }
    
    /**
     * Lädt alle Prüfungstypen aus der Datenbank
     * @return Array/Boolean Ein Array mit den Daten, wenn ok; ansonsten false
     */
    public function getAllPruefungstypen()
    {
        $qry = 'SELECT * FROM lehre.tbl_pruefungstyp;';
        
        if($this->db_query($qry))
        {
            $result = array();
            while($row = $this->db_fetch_object())
            {
                $obj = new stdClass();
                $obj->pruefungstyp_kurzbz = $row->pruefungstyp_kurzbz;
                $obj->beschreibung = $row->beschreibung;
                $obj->abschluss = $row->abschluss;
                array_push($result, $obj);
            }
        }
        else
        {
            $this->errormsg = "Prüfungstypen konnten nicht geladen werden.";
            return false;
        }
        return $result;
        
    }
    
    public function getNumberOfParticipants()
    {
        $qry = 'SELECT * FROM campus.tbl_pruefungsanmeldung WHERE pruefungstermin_id='.$this->db_add_param($this->pruefungstermin_id).';';
        
        if($this->db_query($qry))
        {
            return $this->db_num_rows();
        }
        else
        {
            $this->errormsg = 'Teilnehmeranzahl konnte nicht geladen werden.';
            return false;
        }
        return false;
    }
}