class.ilCalendarSharedStatus.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2006 ILIAS open source, University of Cologne            |
        |                                                                             |
        | 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
        +-----------------------------------------------------------------------------+
*/

class ilCalendarSharedStatus
{
        const STATUS_ACCEPTED = 1;
        const STATUS_DECLINED = 2;
        const STATUS_DELETED = 3;
        
        protected $db = null;
        
        private $usr_id = 0;
        
        private $calendars = array();
        

        public function __construct($a_usr_id)
        {
                global $ilDB;
                
                $this->usr_id = $a_usr_id;
                $this->db = $ilDB;
                
                $this->read();
        }
        
        public function isAccepted($a_cal_id)
        {
                return isset($this->calendars[$a_cal_id]) and $this->calendars[$a_cal_id] == self::STATUS_ACCEPTED;
        }
        
        public function isDeclined($a_cal_id)
        {
                return isset($this->calendars[$a_cal_id]) and $this->calendars[$a_cal_id] == self::STATUS_DECLINED;
        }

        public function getAcceptedCalendars($a_usr_id)
        {
                global $ilDB;
                
                $query = "SELECT cal_id FROM cal_shared_status ".
                        "WHERE status = ".$ilDB->quote(self::STATUS_ACCEPTED)." ".
                        "AND usr_id = ".$ilDB->quote($a_usr_id)." ";
                $res = $ilDB->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $cal_ids[] = $row->cal_id;
                }
                return $cal_ids ? $cal_ids : array();
        }
        
        public static function hasStatus($a_usr_id,$a_calendar_id)
        {
                global $ilDB;
                
                $query = "SELECT * FROM cal_shared_status ".
                        "WHERE usr_id = ".$ilDB->quote($a_usr_id)." ".
                        "AND cal_id = ".$ilDB->quote($a_calendar_id)." ";
                $res = $ilDB->query($query);
                return $res->numRows() ? true : false;
        }
        
        public static function deleteUser($a_usr_id)
        {
                global $ilUser;
                
                $query = "DELETE FROM cal_shared_status ".
                        "WHERE usr_id = ".$ilDB->quote($a_usr_id)." ";
                $ilDB->query($query);
                return true;
        }
        
        public static function deleteCalendar($a_calendar_id)
        {
                global $ilDB;
                
                $query = "DELETE FROM cal_shared_status ".
                        "WHERE cal_id = ".$ilDB->quote($a_calendar_id)." ";
                $ilDB->query($query);
                return true;
        }
        
        public static function deleteStatus($a_id,$a_calendar_id)
        {
                global $ilDB,$rbacreview;
                
                
                if(ilObject::_lookupType($a_id) == 'usr')
                {
                        $query = "DELETE FROM cal_shared_status ".
                                "WHERE cal_id = ".$ilDB->quote($a_calendar_id)." ".
                                "AND usr_id = ".$ilDB->quote($a_id)." ";
                        $ilDB->query($query);
                        
                }
                elseif(ilObject::_lookupType($a_id) == 'role')
                {
                        $assigned_users = $rbacreview->assignedUsers($a_id);
                        
                        if(!count($assigned_users))
                        {
                                return true;
                        }
                        
                        $query = "DELETE FROM cal_shared_status ".
                                "WHERE cal_id = ".$ilDB->quote($a_calendar_id)." ".
                                "AND usr_id IN (".implode(',',ilUtil::quoteArray($assigned_users)).") ";
                        $ilDB->query($query);
                        
                }               
                
                return true;
        }
        
        
        
        public function accept($a_calendar_id)
        {
                self::deleteStatus($this->usr_id,$a_calendar_id);
                
                $query = "INSERT INTO cal_shared_status ".
                        "SET cal_id = ".$this->db->quote($a_calendar_id).", ".
                        "usr_id = ".$this->db->quote($this->usr_id).", ".
                        "status = ".$this->db->quote(self::STATUS_ACCEPTED)." ";
                $this->db->query($query);
                
                $this->calendars[$a_calendar_id] = self::STATUS_ACCEPTED;
                
                return true;
        }
        
        public function decline($a_calendar_id)
        {
                self::deleteStatus($this->usr_id,$a_calendar_id);
                
                $query = "INSERT INTO cal_shared_status ".
                        "SET cal_id = ".$this->db->quote($a_calendar_id).", ".
                        "usr_id = ".$this->db->quote($this->usr_id).", ".
                        "status = ".$this->db->quote(self::STATUS_DECLINED)." ";
                $this->db->query($query);
                
                $this->calendars[$a_calendar_id] = self::STATUS_DECLINED;

                return true;
        
        }
        
        protected function read()
        {
                $query = "SELECT * FROM cal_shared_status ".
                        "WHERE usr_id = ".$this->db->quote($this->usr_id)." ";
                $res = $this->db->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $this->calendars[$row->cal_id] = $row->status; 
                }
        }
        
}
?>