class.ilCalendarRegistration.php

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<?php
/* Copyright (c) 1998-2010 ILIAS open source, Extended GPL, see docs/LICENSE */

class ilCalendarRegistration
{
    private $appointment_id = 0;
    
    private $registered = array();
    
    public function __construct($a_appointment_id)
    {
        $this->appointment_id = $a_appointment_id;
        
        $this->read();
    }
    
    public static function deleteByUser($a_usr_id)
    {
        global $DIC;

        $ilDB = $DIC['ilDB'];

        $query = "DELETE FROM cal_registrations " .
            "WHERE usr_id = " . $ilDB->quote($a_usr_id, 'integer');
        $ilDB->manipulate($query);
    }
    
    public static function deleteByAppointment($a_cal_id)
    {
        global $DIC;

        $ilDB = $DIC['ilDB'];

        $query = "DELETE FROM cal_registrations " .
            "WHERE cal_id = " . $ilDB->quote($a_cal_id, 'integer');
        $ilDB->manipulate($query);
    }
    
    public function getAppointmentId()
    {
        return $this->appointment_id;
    }
    
    public function getRegisteredUsers(\ilDateTime $start, \ilDateTime $end)
    {
        $users = [];
        foreach ($this->registered as $reg_data) {
            if (
                $reg_data['dstart'] == $start->get(IL_CAL_UNIX) &&
                $reg_data['dend'] == $end->get(IL_CAL_UNIX)
            ) {
                $users[] = $reg_data['usr_id'];
            }
        }
        return $users;
    }
    
    public function isRegistered($a_usr_id, ilDateTime $start, ilDateTime $end)
    {
        foreach ($this->registered as $reg_data) {
            if ($reg_data['usr_id'] == $a_usr_id) {
                if ($reg_data['dstart'] == $start->get(IL_CAL_UNIX) and $reg_data['dend'] == $end->get(IL_CAL_UNIX)) {
                    return true;
                }
            }
        }
    }
    
    public function register($a_usr_id, ilDateTime $start, ilDateTime $end)
    {
        global $DIC;

        $ilDB = $DIC['ilDB'];
        
        $this->unregister($a_usr_id, $start, $end);
        
        $query = "INSERT INTO cal_registrations (cal_id,usr_id,dstart,dend) " .
            "VALUES ( " .
            $ilDB->quote($this->getAppointmentId(), 'integer') . ", " .
            $ilDB->quote($a_usr_id, 'integer') . ", " .
            $ilDB->quote($start->get(IL_CAL_UNIX), 'integer') . ", " .
            $ilDB->quote($end->get(IL_CAL_UNIX), 'integer') .
            ")";
        $ilDB->manipulate($query);
        
        $this->registered[] = $a_usr_id;
        return true;
    }
    
    public function unregister($a_usr_id, ilDateTime $start, ilDateTime $end)
    {
        global $DIC;

        $ilDB = $DIC['ilDB'];
        
        $query = "DELETE FROM cal_registrations " .
            "WHERE cal_id = " . $ilDB->quote($this->getAppointmentId(), 'integer') . ' ' .
            "AND usr_id = " . $ilDB->quote($a_usr_id, 'integer') . ' ' .
            "AND dstart = " . $ilDB->quote($start->get(IL_CAL_UNIX), 'integer') . ' ' .
            "AND dend = " . $ilDB->quote($end->get(IL_CAL_UNIX), 'integer');
        $res = $ilDB->manipulate($query);
    }
    
    
    protected function read()
    {
        global $DIC;

        $ilDB = $DIC['ilDB'];

        if (!$this->getAppointmentId()) {
            return false;
        }
        
        $query = "SELECT * FROM cal_registrations WHERE cal_id = " . $ilDB->quote($this->getAppointmentId(), 'integer');
        $res = $ilDB->query($query);
        while ($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT)) {
            $this->registered[] = array(
                'usr_id' => $row->usr_id,
                'dstart' => $row->dstart,
                'dend' => $row->dend
            );
        }
    }
}