Modules/Chat/classes/class.ilChatBlockedUsers.php

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<?php
/*
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        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2001 ILIAS open source, University of Cologne            |
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        | 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.                      |
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        | 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.                                |
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        | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
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*/

class ilChatBlockedUsers
{
        var $id;
        var $db;

        var $blocked = array();

        function ilChatBlockedUsers($a_id)
        {
                global $ilDB;

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

                $this->__read();
        }

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

        function isBlocked($a_usr_id)
        {
                return in_array($a_usr_id,$this->blocked) ? true : false;
        }
        function block($a_usr_id)
        {
                global $ilDB;
                
                if(in_array((int) $a_usr_id,$this->blocked) or !((int) $a_usr_id))
                {
                        return false;
                }
                $query = "INSERT INTO chat_blocked ".
                        "SET chat_id = ".$ilDB->quote($this->id).", ".
                        "usr_id = ".$ilDB->quote((int) $a_usr_id)."";

                $this->db->query($query);
                $this->__read();

                return true;
        }

        function unblock($a_usr_id)
        {
                global $ilDB;
                
                if(!in_array((int) $a_usr_id,$this->blocked))
                {
                        return false;
                }
                $query = "DELETE FROM chat_blocked ".
                        "WHERE chat_id = ".$ilDB->quote($this->id)." ".
                        "AND usr_id = ".$ilDB->quote((int) $a_usr_id). "";

                $this->db->query($query);
                $this->__read();

                return true;
        }
                

                
        // Static
        function _isBlocked($a_chat_id,$a_usr_id)
        {
                global $ilDB;

                $query = "SELECT * FROM chat_blocked ".
                        "WHERE chat_id = ".$ilDB->quote($a_chat_id)." ".
                        "AND usr_id = ".$ilDB->quote($a_usr_id )."";

                $res = $ilDB->query($query);

                return $res->numRows() ? true : false;
        }


        function _deleteUser($a_usr_id)
        {
                global $ilDB;

                $query = "DELETE FROM chat_blocked ".
                        "WHERE usr_id = ".$ilDB->quote((int) $a_usr_id)."";

                $ilDB->query($query);

                return true;
        }
        function _deleteChat($a_chat_id)
        {
                global $ilDB;

                $query = "DELETE FROM chat_blocked ".
                        "WHERE chat_id = ".$ilDB->quote((int) $a_chat_id)."";

                $ilDB->query($query);

                return true;
        }               


        // Private
        function __read()
        {
                global $ilDB;
                
                $this->blocked = array();

                $query = "SELECT * FROM chat_blocked ".
                        "WHERE chat_id = ".$ilDB->quote($this->id)."";

                $res = $this->db->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $this->blocked[] = $row->usr_id;
                }
                return true;
        }

} // END class.ilBlockedUsers
?>