Chamilo is a learning management system focused on ease of use and accessibility
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chamilo-lms/main/chat/chat_functions.lib.php

138 lines
4.7 KiB

<?php
/*
==============================================================================
Dokeos - elearning and course management software
Copyright (c) 2004-2008 Dokeos SPRL
Copyright (c) 2003 Ghent University (UGent)
Copyright (c) 2001 Universite catholique de Louvain (UCL)
Copyright (c) various contributors
For a full list of contributors, see "credits.txt".
The full license can be read in "license.txt".
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.
See the GNU General Public License for more details.
Contact address: Dokeos, rue du Corbeau, 108, B-1030 Brussels, Belgium
Mail: info@dokeos.com
==============================================================================
*/
/**
* @author isaac flores paz
* @param integer
* @return void
*/
function exit_of_chat ($user_id) {
$list_course=array();
$list_course=CourseManager::get_courses_list_by_user_id($user_id);
$group_id = intval($_SESSION['id_group']);
$session_id = intval($_SESSION['id_session']);
$extra_condition = '';
if (!empty($group_id)) $extra_condition = " AND to_group_id = '$group_id'";
else $extra_condition = api_get_session_condition($session_id);
foreach($list_course as $courses) {
$response=user_connected_in_chat($user_id,$courses['db_name']);
if ($response===true) {
$tbl_chat_connected = Database::get_course_chat_connected_table($courses['db_name']);
$sql='DELETE FROM '.$tbl_chat_connected.' WHERE user_id='.$user_id.$extra_condition;
Database::query($sql,__FILE__,__LINE__);
}
}
}
/**
* @author isaac flores paz
* @param integer the user id
* @param string the database name
* @return boolean
*/
function user_connected_in_chat ($user_id,$database_name) {
$tbl_chat_connected = Database::get_course_chat_connected_table($database_name);
$group_id = intval($_SESSION['id_group']);
$session_id = intval($_SESSION['id_session']);
$extra_condition = '';
if (!empty($group_id)) $extra_condition = " AND to_group_id = '$group_id'";
else $extra_condition = api_get_session_condition($session_id);
$sql='SELECT COUNT(*) AS count FROM '.$tbl_chat_connected .' c WHERE user_id='.$user_id.$extra_condition;
$result = Database::query($sql,__FILE__,__LINE__);
$count = Database::fetch_array($result,'ASSOC');
if (1==$count['count']) {
return true;
} else {
return false;
}
}
/**
* @param void
* @return void
*/
function disconnect_user_of_chat($database_name='') {
$list_info_user_in_chat = array();
if (!empty($database_name)) {
$list_info_user_in_chat = users_list_in_chat($database_name);
} else {
$list_info_user_in_chat = users_list_in_chat();
}
$cd_date = date('Y-m-d',time());
$cdate_h = date('H',time());
$cdate_m = date('i',time());
$cdate_s = date('s',time());
$cd_count_time_seconds=$cdate_h*3600 + $cdate_m*60 + $cdate_s;
if (is_array($list_info_user_in_chat) && count($list_info_user_in_chat) > 0 ) {
foreach ($list_info_user_in_chat as $list_info_user) {
$date_db_date = date('Y-m-d',strtotime($list_info_user['last_connection']));
$date_db_h = date('H',strtotime($list_info_user['last_connection']));
$date_db_m = date('i',strtotime($list_info_user['last_connection']));
$date_db_s = date('s',strtotime($list_info_user['last_connection']));
$date_count_time_seconds=$date_db_h*3600 + $date_db_m*60 + $date_db_s;
if ($cd_date==$date_db_date) {
if (($cd_count_time_seconds - $date_count_time_seconds)>5) {
$tbl_chat_connected = Database::get_course_chat_connected_table();
if (!empty($database_name)) {
$tbl_chat_connected = Database::get_course_chat_connected_table($database_name);
}
$sql='DELETE FROM '.$tbl_chat_connected.' WHERE user_id='.$list_info_user['user_id'];
//return $sql;
Database::query($sql,__FILE__,__LINE__);
}
}
}
}
}
/**
* @param void
* @return array user list in chat
*/
function users_list_in_chat ($database_name = '') {
$list_users_in_chat=array();
$tbl_chat_connected = Database::get_course_chat_connected_table($database_name);
$group_id = intval($_SESSION['id_group']);
$session_id = intval($_SESSION['id_session']);
$extra_condition = '';
if (!empty($group_id)) $extra_condition = " WHERE to_group_id = '$group_id'";
else $extra_condition = api_get_session_condition($session_id,false);
$sql='SELECT user_id,last_connection FROM '.$tbl_chat_connected.$extra_condition;
$result=Database::query($sql,__FILE__,__LINE__);
while ($row = Database::fetch_array($result,'ASSOC')) {
$list_users_in_chat[]=$row;
}
return $list_users_in_chat;
}
?>