chat/classes/class.ilObjChat.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. |
        +-----------------------------------------------------------------------------+
*/

require_once "classes/class.ilObjectGUI.php";
require_once "chat/classes/class.ilChatServerConfig.php";
require_once "chat/classes/class.ilChatServerCommunicator.php";
require_once "chat/classes/class.ilChatUser.php";
require_once "chat/classes/class.ilChatRoom.php";
require_once "chat/classes/class.ilFileDataChat.php";

class ilObjChat extends ilObject
{
        var $server_conf;
        var $server_comm;
        var $chat_room;
        var $chat_user;
        var $chat_recording = null;

        function ilObjChat($a_id = 0,$a_call_by_reference = true)
        {
                $this->type = "chat";
                $this->ilObject($a_id,$a_call_by_reference);

                $this->server_conf =& new ilChatServerConfig();
                $this->server_comm =& new ilChatServerCommunicator($this);
                $this->chat_user =& new ilChatUser();
                $this->chat_room =& new ilChatRoom($this->getId());
        }

        function read()
        {
                // USED ilObjectFactory::getInstance...
                parent::read();

                $this->server_conf =& new ilChatServerConfig();
                $this->server_comm =& new ilChatServerCommunicator($this);
                $this->chat_user =& new ilChatUser();
                $this->chat_room =& new ilChatRoom($this->getId());
        }

        function initDefaultRoles()
        {
                global $rbacadmin;
                
                // create a local role folder
                $rolf_obj =& $this->createRoleFolder();

                // create moderator role and assign role to rolefolder...
                $role_obj = $rolf_obj->createRole("il_chat_moderator_".$this->getRefId(),"Moderator of chat obj_no.".$this->getId());

                // grant permissions: visible,read,write,chat_moderate
                $permissions = ilRbacReview::_getOperationIdsByName(array('visible','read','moderate'));
                $rbacadmin->grantPermission($role_obj->getId(),
                                                                        $permissions,
                                                                        $this->getRefId());

                unset($rolf_obj);

                return array($role_obj->getId());
        }

        function ilClone($a_parent_ref)
        {
                $tmp_obj =& ilObjectFactory::getInstanceByRefId(parent::ilClone($a_parent_ref));
        }


        function delete()
        {
                if(!parent::delete())
                {
                        return false;
                }
                $rooms = $this->chat_room->getAllRoomsOfObject();
                foreach($rooms as $room)
                {
                        $this->chat_room->delete($room["room_id"]);
                }

                // FINALLY DELETE MESSAGES IN PUBLIC ROOM
                $query = "DELETE FROM chat_room_messages ".
                        "WHERE chat_id = '".$this->getRefId()."'";

                $res = $this->ilias->db->query($query);

                // AND ALL USERS
                $query = "DELETE FROM chat_user ".
                        "WHERE chat_id = '".$this->getRefId()."'";

                $res = $this->ilias->db->query($query);

                // AND ALL RECORDINGS
                $query = "SELECT record_id FROM chat_records WHERE 
                                        chat_id = '".$this->getId()."'";
                $res = $this->ilias->db->query($query);
                if (DB::isError($res)) die("ilObjChat::delete(): " . $res->getMessage() . "<br>SQL-Statement: ".$q);
                if (($num = $res->numRows()) > 0)
                {
                        for ($i = 0; $i < $num; $i++)
                        {
                                $data = $res->fetchRow(DB_FETCHMODE_ASSOC);
                                $this->ilias->db->query("DELETE FROM chat_record_data WHERE record_id = '" . $data["record_id"] . "'");
                        }
                        
                }
                $query = "DELETE FROM chat_records WHERE 
                                        chat_id = '".$this->getId()."'";
                $res = $this->ilias->db->query($query);

                return true;
        }

        function sendMessage($a_id)
        {
                include_once "./classes/class.ilMail.php";

                $tmp_mail_obj = new ilMail($_SESSION["AccountId"]);

                // GET USER OBJECT
                $tmp_user = ilObjectFactory::getInstanceByObjId($a_id);

                // GET USERS LANGUAGE
                $tmp_lang =& new ilLanguage($tmp_user->getLanguage());
                $tmp_lang->loadLanguageModule("chat");

                $message = $tmp_mail_obj->sendMail($this->__formatRecipient($tmp_user),"","",$this->__formatSubject($tmp_lang),
                                                                                   $this->__formatBody($tmp_user,$tmp_lang),array(),array("normal"));

                unset($tmp_mail_obj);
                unset($tmp_lang);
                unset($tmp_user);

                return true;
        }

        function getHTMLDirectory()
        {
                $tmp_tpl =& new ilTemplate("tpl.chat_export.html",true,true);
                
                $this->chat_room->setRoomId(0);

                $tmp_tpl->setVariable("CHAT_NAME",$this->getTitle());
                $tmp_tpl->setVariable("CHAT_DATE",strftime("%c",time()));
                $tmp_tpl->setVariable("CONTENT",$this->chat_room->getAllMessages());

                $file_obj =& new ilFileDataChat($this);
                
                // return directory name of index.html
                return $file_obj->addFile('index.html',$tmp_tpl->get());
        }

        // PRIVATE
        function __formatRecipient(&$user)
        {
                if(is_object($user))
                {
                        return $user->getLogin();
                }
                return false;
        }

        function __formatSubject(&$lang)
        {
                return $lang->txt("chat_invitation_subject");
        }

        function __formatBody(&$user,&$lang)
        {
                $room_id = $this->chat_room->getRoomId();

                $body = $lang->txt("chat_invitation_body")." ";
                $body .= $this->ilias->account->getFullname();
                $body .= "\n";
                $body .= $lang->txt("chat_chatroom_body")." ".$this->chat_room->getTitle()."\n\n";
                $body .= "<a class=\"navigation\" href=\"./chat/chat.php?room_id=".$room_id."&ref_id=".$this->getRefId()."\" target=\"_blank\">".
                        $lang->txt("chat_to_chat_body")."</a>";

                return $body;
        }

        // Protected
        function __initChatRecording()
        {
                if(!is_object($this->chat_recording))
                {
                        include_once 'chat/classes/class.ilChatRecording.php';

                        $this->chat_recording = new ilChatRecording($this->getId());

                        return true;
                }
                return false;
        }

        function _getPublicChatRefId()
        {
                static $public_chat_ref_id = 0;

                global $tree;

                if($public_chat_ref_id)
                {
                        return $public_chat_ref_id;
                }
                else
                {
                        foreach($tree->getSubTree($tree->getNodeData(SYSTEM_FOLDER_ID)) as $node)
                        {
                                if($node['type'] == 'chat')
                                {
                                        return $public_chat_ref_id = $node['child'];
                                }
                        }
                }
                return false;
        }

        function _goto($a_target)
        {
                global $ilAccess, $ilErr, $lng;

                if ($ilAccess->checkAccess("read", "", $a_target))
                {
                        ilUtil::redirect("chat.php?ref_id=$a_target");
                }
                else
                {
                        $ilErr->raiseError($lng->txt("msg_no_perm_read"), $ilErr->FATAL);
                }
        }

                        
        // SET/GET
} // END class.ilObjTest
?>