class.ilChatBlockedUsers.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2001 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 ilChatBlockedUsers
{
        var $id;
        var $db;

        var $blocked = array();

        public function __construct($a_id)
        {
                global $ilDB;

                $this->db =& $ilDB;
                $this->id = $a_id;

                $this->read();
        }

        public function getBlockedUsers()
        {
                return $this->blocked ? $this->blocked : array();
        }

        public function isBlocked($a_usr_id)
        {
                return in_array($a_usr_id, $this->blocked) ? true : false;
        }
        
        public function block($a_usr_id)
        {
                global $ilDB;
                
                if(in_array((int) $a_usr_id,$this->blocked) or !((int) $a_usr_id))
                {
                        return false;
                }

                $statement = $this->db->manipulateF(
                        'INSERT INTO chat_blocked (chat_id, usr_id) VALUES (%s, %s)',
                        array('integer', 'integer'),
                        array($this->id, $a_usr_id));
                
                $this->read();

                return true;
        }

        public function unblock($a_usr_id)
        {
                global $ilDB;
                
                if(!in_array((int) $a_usr_id,$this->blocked))
                {
                        return false;
                }

                $statement = $this->db->manipulateF('
                        DELETE FROM chat_blocked 
                        WHERE chat_id = %s
                        AND     usr_id = %s',
                        array('integer', 'integer'),
                        array($this->id, $a_usr_id));
                
                $this->read();

                return true;
        }
                
        static function _isBlocked($a_chat_id, $a_usr_id)
        {
                global $ilDB;

                $res = $ilDB->queryf('
                        SELECT * FROM chat_blocked 
                        WHERE chat_id = %s
                        AND     usr_id = %s',
                        array('integer', 'integer'),
                        array($a_chat_id, $a_usr_id));
                        
                // was array($this->id, $a_usr_id));
                
                return $res->numRows() ? true : false;
        }

        static function _deleteUser($a_usr_id)
        {
                global $ilDB;

                $statement = $ilDB->manipulateF('
                        DELETE FROM chat_blocked WHERE usr_id = %s',
                        array('integer'),
                        array((int) $a_usr_id));
                
                return true;
        }
        
        static function _deleteChat($a_chat_id)
        {
                global $ilDB;

                $statement = $ilDB->manipulateF('
                        DELETE FROM chat_blocked WHERE chat_id = %s',
                        array('integer'),
                        array((int) $a_chat_id));
                
                return true;
        }               

        private function read()
        {
                global $ilDB;
                
                $this->blocked = array();

                $res = $this->db->queryf('
                        SELECT * FROM chat_blocked WHERE chat_id = %s',
                        array('integer'),
                        array($this->id));
                        
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $this->blocked[] = $row->usr_id;
                }
                return true;
        }
        
        
} // END class.ilBlockedUsers
?>