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+<?php
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+/*
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+==============================================================================
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+ Dokeos - elearning and course management software
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+
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+ Copyright (c) 2004-2008 Dokeos SPRL
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+ Copyright (c) 2003 Ghent University (UGent)
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+ Copyright (c) 2001 Universite catholique de Louvain (UCL)
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+ Copyright (c) various contributors
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+
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+ For a full list of contributors, see "credits.txt".
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+ The full license can be read in "license.txt".
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+
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+ This program is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU General Public License
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+ as published by the Free Software Foundation; either version 2
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+ of the License, or (at your option) any later version.
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+
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+ See the GNU General Public License for more details.
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+
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+ Contact address: Dokeos, rue du Corbeau, 108, B-1030 Brussels, Belgium
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+ Mail: info@dokeos.com
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+==============================================================================
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+*/
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+include_once '../inc/lib/course.lib.php';
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+/**
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+ * @author isaac flores paz
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+ * @param integer
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+ * @return void
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+ */
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+function exit_of_chat ($user_id) {
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+ $list_course=array();
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+ $list_course=CourseManager::get_courses_list_by_user_id($user_id);
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+ foreach($list_course as $courses) {
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+ $response=user_connected_in_chat($user_id,$courses['db_name']);
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+ if ($response===true) {
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+ $tbl_chat_connected = Database::get_course_chat_connected_table($courses['db_name']);;
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+ $sql='DELETE FROM '.$tbl_chat_connected.' WHERE user_id='.$user_id;
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+ api_sql_query($sql,__FILE__,__LINE__);
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+ }
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+ }
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+
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+}
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+/**
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+ * @author isaac flores paz
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+ * @param integer the user id
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+ * @param string the database name
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+ * @return boolean
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+ */
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+function user_connected_in_chat ($user_id,$database_name) {
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+ $tbl_chat_connected = Database::get_course_chat_connected_table($database_name);
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+ $sql='SELECT COUNT(*) AS count FROM '.$tbl_chat_connected .' c WHERE user_id='.$user_id;
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+ $result = api_sql_query($sql,__FILE__,__LINE__);
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+ $count = Database::fetch_array($result,'ASSOC');
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+ if (1==$count['count']) {
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+ return true;
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+ } else {
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+ return false;
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+ }
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+}
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+
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+/**
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+ * @param void
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+ * @return void
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+ */
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+function disconnect_user_of_chat () {
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+ $list_info_user_in_chat = array();
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+ $list_info_user_in_chat = users_list_in_chat ();
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+
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+ $cd_date = date('Y-m-d',time());
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+ $cdate_h = date('H',time());
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+ $cdate_m = date('i',time());
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+ $cdate_s = date('s',time());
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+ $cd_count_time_seconds=$cdate_h*3600 + $cdate_m*60 + $cdate_s;
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+
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+ foreach ($list_info_user_in_chat as $list_info_user) {
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+ $date_db_date = date('Y-m-d',strtotime($list_info_user['last_connection']));
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+ $date_db_h = date('H',strtotime($list_info_user['last_connection']));
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+ $date_db_m = date('i',strtotime($list_info_user['last_connection']));
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+ $date_db_s = date('s',strtotime($list_info_user['last_connection']));
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+ $date_count_time_seconds=$date_db_h*3600 + $date_db_m*60 + $date_db_s;
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+ if ($cd_date==$date_db_date) {
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+ if (($cd_count_time_seconds - $date_count_time_seconds)>10) {
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+ $tbl_chat_connected = Database::get_course_chat_connected_table();
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+ $sql='DELETE FROM '.$tbl_chat_connected.' WHERE user_id='.$list_info_user['user_id'];
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+ api_sql_query($sql,__FILE__,__LINE__);
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+ }
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+ }
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+
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+
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+ }
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+}
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+
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+/**
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+ * @param void
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+ * @return array user list in chat
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+ */
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+function users_list_in_chat () {
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+ $list_users_in_chat=array();
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+ $tbl_chat_connected = Database::get_course_chat_connected_table();
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+ $sql='SELECT user_id,last_connection FROM '.$tbl_chat_connected.' ;';
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+ $result=api_sql_query($sql,__FILE__,__LINE__);
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+ while ($row = Database::fetch_array($result,'ASSOC')) {
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+ $list_users_in_chat[]=$row;
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+ }
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+ return $list_users_in_chat;
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+}
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+
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+?>
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