123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321 |
- <?php
- /*
- ==============================================================================
- Dokeos - elearning and course management software
- Copyright (c) 2004-2009 Dokeos SPRL
- Copyright (c) 2003 Ghent University (UGent)
- Copyright (c) 2001 Universite catholique de Louvain (UCL)
- Copyright (c) various contributors
- Copyright (c) Bart Mollet, Hogeschool Gent
- 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: Dokeos, rue du Corbeau, 108, B-1030 Brussels, Belgium, info@dokeos.com
- ==============================================================================
- */
- /**
- ==============================================================================
- * This library provides functions for user management.
- * Include/require it in your code to use its functionality.
- *
- * @package dokeos.library
- ==============================================================================
- */
- require_once('display.lib.php');
- class SessionManager{
-
- /** Create a session
- * @author Carlos Vargas <carlos.vargas@dokeos.com>,
- * @param array name, year_start,month_start, day_start,year_end,month_end,day_end,nb_days_acess_before,nb_days_acess_after
- **/
- function AddSession($name,$year_start,$month_start,$day_start,$year_end,$month_end,$day_end,$nb_days_acess_before,$nb_days_acess_after,$nolimit,$coach_username) {
- $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
- $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
- global $_user;
-
- $sql = 'SELECT user_id FROM '.$tbl_user.' WHERE username="'.Database::escape_string($coach_username).'"';
- $rs = api_sql_query($sql, __FILE__, __LINE__);
- $id_coach = Database::result($rs,0,'user_id');
-
- if (empty($nolimit)){
- $date_start="$year_start-".(($month_start < 10)?"0$month_start":$month_start)."-".(($day_start < 10)?"0$day_start":$day_start);
- $date_end="$year_end-".(($month_end < 10)?"0$month_end":$month_end)."-".(($day_end < 10)?"0$day_end":$day_end);
- } else {
- $date_start="000-00-00";
- $date_end="000-00-00";
- }
- if(empty($name)) {
- Display::display_normal_message(get_lang('SessionNameIsRequired'));
- } elseif (empty($coach_username)) {
- Display::display_normal_message(get_lang('CoachIsRequired'));
- } elseif (empty($nolimit) && (!$month_start || !$day_start || !$year_start || !checkdate($month_start,$day_start,$year_start))) {
- Display::display_normal_message(get_lang('InvalidStartDate'));
- } elseif (empty($nolimit) && (!$month_end || !$day_end || !$year_end || !checkdate($month_end,$day_end,$year_end))) {
- Display::display_normal_message(get_lang('InvalidEndDate'));
- } elseif(empty($nolimit) && $date_start >= $date_end) {
- Display::display_normal_message(get_lang('StartDateShouldBeBeforeEndDate'));
- } else {
- $rs = api_sql_query("SELECT 1 FROM $tbl_session WHERE name='".addslashes($name)."'");
- if(Database::num_rows($rs)) {
- Display::display_normal_message(get_lang('SessionNameSoonExists'));
- } else {
- api_sql_query("INSERT INTO $tbl_session(name,date_start,date_end,id_coach,session_admin_id, nb_days_access_before_beginning, nb_days_access_after_end) VALUES('".addslashes($name)."','$date_start','$date_end','$id_coach',".intval($_user['user_id']).",".$nb_days_acess_before.", ".$nb_days_acess_after.")",__FILE__,__LINE__);
- $id_session=Database::get_last_insert_id();
- return $id_session;
- }
- }
- }
- /** Edit a session
- * @author Carlos Vargas <carlos.vargas@dokeos.com>,
- * @param array name, year_start,month_start, day_start,year_end,month_end,day_end,nb_days_acess_before,nb_days_acess_after,id
- * The parameter id is a primary key
- **/
- function EditSession($name,$year_start,$month_start,$day_start,$year_end,$month_end,$day_end,$nb_days_acess_before,$nb_days_acess_after,$nolimit,$id_coach,$id) {
-
- $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
- $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
- $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
- global $_user;
-
- if (empty($nolimit)) {
- $date_start="$year_start-".(($month_start < 10)?"0$month_start":$month_start)."-".(($day_start < 10)?"0$day_start":$day_start);
- $date_end="$year_end-".(($month_end < 10)?"0$month_end":$month_end)."-".(($day_end < 10)?"0$day_end":$day_end);
- } else {
- $date_start="000-00-00";
- $date_end="000-00-00";
- }
- if(empty($name)){
- Display::display_normal_message(get_lang('SessionNameIsRequired'));
- } elseif(!empty($nolimit) && (!$month_start || !$day_start || !$year_start || !checkdate($month_start,$day_start,$year_start))) {
- Display::display_normal_message(get_lang('InvalidStartDate'));
- } elseif(!empty($nolimit) && (!$month_end || !$day_end || !$year_end || !checkdate($month_end,$day_end,$year_end))) {
- Display::display_normal_message(get_lang('InvalidEndDate'));
- } elseif(!empty($nolimit) && $date_start >= $date_end) {
- Display::display_normal_message(get_lang('StartDateShouldBeBeforeEndDate'));
- } else {
- $rs = api_sql_query("SELECT id FROM $tbl_session WHERE name='".addslashes($name)."'");
- $exists = false;
- while($row = mysql_fetch_array($rs)) {
- if($row['id']!=$id)
- $exists = true;
- }
- if ($exists) {
- Display::display_normal_message(get_lang('SessionNameSoonExists'));
- } else {
- $sql="UPDATE $tbl_session " .
- "SET name='".addslashes($name)."',
- date_start='".$date_start."',
- date_end='".$date_end."',
- id_coach='".$id_coach."',
- nb_days_access_before_beginning = ".$nb_days_acess_before.",
- nb_days_access_after_end = ".$nb_days_acess_after."
- WHERE id='$id'";
- api_sql_query($sql,__FILE__,__LINE__);
- $sqlu = "UPDATE $tbl_session_rel_course " .
- " SET id_coach='$id_coach'" .
- " WHERE id_session='$id'";
- api_sql_query($sqlu,__FILE__,__LINE__);
- return $id;
- }
- }
- }
- /** Delete session
- * @author Carlos Vargas <carlos.vargas@dokeos.com>,
- * @param array idChecked
- * The parameters is a array to delete sessions
- **/
-
- function DeleteSession($idChecked) {
- $tbl_session=Database::get_main_table(TABLE_MAIN_SESSION);
- $tbl_session_rel_course=Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
- $tbl_session_rel_course_rel_user=Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
- $tbl_session_rel_user=Database::get_main_table(TABLE_MAIN_SESSION_USER);
- $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
- global $_user;
- if(is_array($idChecked)) {
- $idChecked=Database::escape_string(implode(',',$idChecked));
- } else {
- $idChecked=intval($idChecked);
- }
-
- if (!api_is_platform_admin()) {
- $sql = 'SELECT session_admin_id FROM '.Database :: get_main_table(TABLE_MAIN_SESSION).' WHERE id='.$idChecked;
- $rs = api_sql_query($sql,__FILE__,__LINE__);
- if (Database::result($rs,0,0)!=$_user['user_id']) {
- api_not_allowed(true);
- }
- }
-
- api_sql_query("DELETE FROM $tbl_session WHERE id IN($idChecked)",__FILE__,__LINE__);
- api_sql_query("DELETE FROM $tbl_session_rel_course WHERE id_session IN($idChecked)",__FILE__,__LINE__);
- api_sql_query("DELETE FROM $tbl_session_rel_course_rel_user WHERE id_session IN($idChecked)",__FILE__,__LINE__);
- api_sql_query("DELETE FROM $tbl_session_rel_user WHERE id_session IN($idChecked)",__FILE__,__LINE__);
- }
-
- /**Subscribes users to the given session and optionally (default) unsubscribes previous users
- * @author Carlos Vargas <carlos.vargas@dokeos.com>,
- * @param int Session ID
- * @param array List of user IDs
- * @param bool Whether to unsubscribe existing users (true, default) or not (false)
- * @return void Nothing, or false on error
- */
- function suscribe_users_to_session($id_session,$UserList,$empty_users=true){
-
- if ($id_session!= strval(intval($id_session))) return false;
- foreach($UserList as $intUser){
- if ($intUser!= strval(intval($intUser))) return false;
- }
- $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
- $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
- $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
- $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
-
- $sql = "SELECT id_user FROM $tbl_session_rel_user WHERE id_session='$id_session'";
- $result = api_sql_query($sql,__FILE__,__LINE__);
- $existingUsers = array();
- while($row = Database::fetch_array($result)){
- $existingUsers[] = $row['id_user'];
- }
- $sql = "SELECT course_code FROM $tbl_session_rel_course WHERE id_session='$id_session'";
- $result=api_sql_query($sql,__FILE__,__LINE__);
- $CourseList=array();
-
- while($row=Database::fetch_array($result)) {
- $CourseList[]=$row['course_code'];
- }
-
- foreach ($CourseList as $enreg_course) {
- // for each course in the session
- $nbr_users=0;
- $enreg_course = Database::escape_string($enreg_course);
- // delete existing users
- if ($empty_users!==false) {
- foreach ($existingUsers as $existing_user) {
- if(!in_array($existing_user, $UserList)) {
- $sql = "DELETE FROM $tbl_session_rel_course_rel_user WHERE id_session='$id_session' AND course_code='$enreg_course' AND id_user='$existing_user'";
- api_sql_query($sql,__FILE__,__LINE__);
-
- if(Database::affected_rows()) {
- $nbr_users--;
- }
- }
- }
- }
- // insert new users into session_rel_course_rel_user and ignore if they already exist
- foreach ($UserList as $enreg_user) {
- if(!in_array($enreg_user, $existingUsers)) {
- $enreg_user = Database::escape_string($enreg_user);
- $insert_sql = "INSERT IGNORE INTO $tbl_session_rel_course_rel_user(id_session,course_code,id_user) VALUES('$id_session','$enreg_course','$enreg_user')";
- api_sql_query($insert_sql,__FILE__,__LINE__);
- if(Database::affected_rows()) {
- $nbr_users++;
- }
- }
- }
- // count users in this session-course relation
- $sql = "SELECT COUNT(id_user) as nbUsers FROM $tbl_session_rel_course_rel_user WHERE id_session='$id_session' AND course_code='$enreg_course'";
- $rs = api_sql_query($sql, __FILE__, __LINE__);
- list($nbr_users) = Database::fetch_array($rs);
- // update the session-course relation to add the users total
- $update_sql = "UPDATE $tbl_session_rel_course SET nbr_users=$nbr_users WHERE id_session='$id_session' AND course_code='$enreg_course'";
- api_sql_query($update_sql,__FILE__,__LINE__);
- }
- // delete users from the session
- if ($empty_users!==false){
- api_sql_query("DELETE FROM $tbl_session_rel_user WHERE id_session = $id_session",__FILE__,__LINE__);
- }
- // insert missing users into session
- $nbr_users = 0;
- foreach ($UserList as $enreg_user) {
- $enreg_user = Database::escape_string($enreg_user);
- $nbr_users++;
- $insert_sql = "INSERT IGNORE INTO $tbl_session_rel_user(id_session, id_user) VALUES('$id_session','$enreg_user')";
- api_sql_query($insert_sql,__FILE__,__LINE__);
- }
- // update number of users in the session
- $nbr_users = count($UserList);
- $update_sql = "UPDATE $tbl_session SET nbr_users= $nbr_users WHERE id='$id_session' ";
- api_sql_query($update_sql,__FILE__,__LINE__);
- }
- /**Subscribes courses to the given session and optionally (default) unsubscribes previous users
- * @author Carlos Vargas <carlos.vargas@dokeos.com>,
- * @param int Session ID
- * @param array List of courses IDs
- * @param bool Whether to unsubscribe existing users (true, default) or not (false)
- * @return void Nothing, or false on error
- */
- function add_courses_to_session($id_session, $CourseList, $empty_courses=true){
-
- if ($id_session!= strval(intval($id_session))) return false;
- foreach($CourseList as $intCourse){
- if ($intCourse!= strval(intval($intCourse))) return false;
- }
- $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
- $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
- $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
- $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
- $tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
-
- $id_coach = api_sql_query("SELECT id_coach FROM $tbl_session WHERE id=$id_session");
- $id_coach = Database::fetch_array($id_coach);
- $id_coach = $id_coach[0];
-
- $rs = api_sql_query("SELECT course_code FROM $tbl_session_rel_course WHERE id_session=$id_session");
- $existingCourses = api_store_result($rs);
-
- $sql="SELECT id_user
- FROM $tbl_session_rel_user
- WHERE id_session = $id_session";
- $result=api_sql_query($sql,__FILE__,__LINE__);
- $UserList=api_store_result($result);
-
-
- foreach($CourseList as $enreg_course) {
- $enreg_course = Database::escape_string($enreg_course);
- $exists = false;
- foreach($existingCourses as $existingCourse) {
- if($enreg_course == $existingCourse['course_code']) {
- $exists=true;
- }
- }
- if(!$exists) {
- $sql_insert_rel_course= "INSERT INTO $tbl_session_rel_course(id_session,course_code, id_coach) VALUES('$id_session','$enreg_course','$id_coach')";
- api_sql_query($sql_insert_rel_course ,__FILE__,__LINE__);
- //We add in the existing courses table the current course, to not try to add another time the current course
- $existingCourses[]=array('course_code'=>$enreg_course);
- $nbr_users=0;
- foreach ($UserList as $enreg_user) {
- $enreg_user = Database::escape_string($enreg_user['id_user']);
- $sql_insert = "INSERT IGNORE INTO $tbl_session_rel_course_rel_user(id_session,course_code,id_user) VALUES('$id_session','$enreg_course','$enreg_user')";
- api_sql_query($sql_insert,__FILE__,__LINE__);
- if(Database::affected_rows()) {
- $nbr_users++;
- }
- }
- api_sql_query("UPDATE $tbl_session_rel_course SET nbr_users=$nbr_users WHERE id_session='$id_session' AND course_code='$enreg_course'",__FILE__,__LINE__);
- }
-
- }
- if ($empty_courses!==false) {
- foreach($existingCourses as $existingCourse) {
- if(!in_array($existingCourse['course_code'], $CourseList)){
- api_sql_query("DELETE FROM $tbl_session_rel_course WHERE course_code='".$existingCourse['course_code']."' AND id_session=$id_session");
- api_sql_query("DELETE FROM $tbl_session_rel_course_rel_user WHERE course_code='".$existingCourse['course_code']."' AND id_session=$id_session");
-
- }
- }
- }
- $nbr_courses=count($CourseList);
- api_sql_query("UPDATE $tbl_session SET nbr_courses=$nbr_courses WHERE id='$id_session'",__FILE__,__LINE__);
- }
- }
- ?>
|