sessionmanager.lib.php 70 KB

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  1. <?php //$id: $
  2. /* For licensing terms, see /license.txt */
  3. /**
  4. * This is the session library for Chamilo.
  5. * All main sessions functions should be placed here.
  6. * @package chamilo.library
  7. */
  8. /**
  9. * Code
  10. */
  11. /* LIBRARIES */
  12. /**
  13. * This class provides methods for sessions management.
  14. * Include/require it in your code to use its features.
  15. *
  16. * @package chamilo.library
  17. */
  18. class SessionManager {
  19. private function __construct() {
  20. }
  21. /**
  22. * Fetches a session from the database
  23. * @param int Session ID
  24. * @return array Session details (id, id_coach, name, nbr_courses, nbr_users, nbr_classes, date_start, date_end, nb_days_access_before_beginning,nb_days_access_after_end, session_admin_id)
  25. */
  26. public static function fetch($id) {
  27. $t = Database::get_main_table(TABLE_MAIN_SESSION);
  28. if ($id != strval(intval($id))) { return array(); }
  29. $s = "SELECT * FROM $t WHERE id = $id";
  30. $r = Database::query($s);
  31. if (Database::num_rows($r) != 1) { return array(); }
  32. return Database::fetch_array($r,'ASSOC');
  33. }
  34. /**
  35. * Create a session
  36. * @author Carlos Vargas from existing code
  37. * @param string name
  38. * @param integer Start year (yyyy)
  39. * @param integer Start month (mm)
  40. * @param integer Start day (dd)
  41. * @param integer End year (yyyy)
  42. * @param integer End month (mm)
  43. * @param integer End day (dd)
  44. * @param integer Number of days that the coach can access the session before the start date
  45. * @param integer Number of days that the coach can access the session after the end date
  46. * @param integer If 1, means there are no date limits
  47. * @param mixed If integer, this is the session coach id, if string, the coach ID will be looked for from the user table
  48. * @param integer ID of the session category in which this session is registered
  49. * @param integer Visibility after end date (0 = read-only, 1 = invisible, 2 = accessible)
  50. * @param string Start limit = true if the start date has to be considered
  51. * @param string End limit = true if the end date has to be considered
  52. * @todo use an array to replace all this parameters or use the model.lib.php ...
  53. * @return mixed Session ID on success, error message otherwise
  54. **/
  55. public static function create_session($sname,$syear_start,$smonth_start,$sday_start,$syear_end,$smonth_end,$sday_end,$snb_days_acess_before,$snb_days_acess_after, $nolimit,$coach_username, $id_session_category,$id_visibility, $start_limit = true, $end_limit = true, $fix_name = false) {
  56. $name = Database::escape_string(trim($sname));
  57. $year_start = intval($syear_start);
  58. $month_start = intval($smonth_start);
  59. $day_start = intval($sday_start);
  60. $year_end = intval($syear_end);
  61. $month_end = intval($smonth_end);
  62. $day_end = intval($sday_end);
  63. $nb_days_acess_before = intval($snb_days_acess_before);
  64. $nb_days_acess_after = intval($snb_days_acess_after);
  65. $id_session_category = intval($id_session_category);
  66. $id_visibility = intval($id_visibility);
  67. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  68. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  69. if(is_int($coach_username)) {
  70. $id_coach = $coach_username;
  71. } else {
  72. $sql = 'SELECT user_id FROM '.$tbl_user.' WHERE username="'.Database::escape_string($coach_username).'"';
  73. $rs = Database::query($sql);
  74. $id_coach = Database::result($rs,0,'user_id');
  75. }
  76. if (empty($nolimit)) {
  77. $date_start ="$year_start-".(($month_start < 10)?"0$month_start":$month_start)."-".(($day_start < 10)?"0$day_start":$day_start);
  78. $date_end ="$year_end-".(($month_end < 10)?"0$month_end":$month_end)."-".(($day_end < 10)?"0$day_end":$day_end);
  79. } else {
  80. $id_visibility = 1; // by default session visibility is read only
  81. $date_start ="0000-00-00";
  82. $date_end ="0000-00-00";
  83. }
  84. if (empty($end_limit)) {
  85. $date_end ="0000-00-00";
  86. $id_visibility = 1; // by default session visibility is read only
  87. }
  88. if (empty($start_limit)) {
  89. $date_start ="0000-00-00";
  90. }
  91. if (empty($name)) {
  92. $msg=get_lang('SessionNameIsRequired');
  93. return $msg;
  94. } elseif (empty($coach_username)) {
  95. $msg=get_lang('CoachIsRequired');
  96. return $msg;
  97. } elseif (!empty($start_limit) && empty($nolimit) && (!$month_start || !$day_start || !$year_start || !checkdate($month_start,$day_start,$year_start))) {
  98. $msg=get_lang('InvalidStartDate');
  99. return $msg;
  100. } elseif (!empty($end_limit) && empty($nolimit) && (!$month_end || !$day_end || !$year_end || !checkdate($month_end,$day_end,$year_end))) {
  101. $msg=get_lang('InvalidEndDate');
  102. return $msg;
  103. } elseif(!empty($start_limit) && !empty($end_limit) && empty($nolimit) && $date_start >= $date_end) {
  104. $msg=get_lang('StartDateShouldBeBeforeEndDate');
  105. return $msg;
  106. } else {
  107. $ready_to_create = false;
  108. if ($fix_name) {
  109. $name = self::generate_nice_next_session_name($name);
  110. if ($name) {
  111. $ready_to_create = true;
  112. } else {
  113. $msg=get_lang('SessionNameAlreadyExists');
  114. return $msg;
  115. }
  116. } else {
  117. $rs = Database::query("SELECT 1 FROM $tbl_session WHERE name='".$name."'");
  118. if (Database::num_rows($rs)) {
  119. $msg=get_lang('SessionNameAlreadyExists');
  120. return $msg;
  121. }
  122. $ready_to_create = true;
  123. }
  124. if ($ready_to_create) {
  125. $sql_insert = "INSERT INTO $tbl_session(name,date_start,date_end,id_coach,session_admin_id, nb_days_access_before_beginning, nb_days_access_after_end, session_category_id,visibility)
  126. VALUES('".$name."','$date_start','$date_end','$id_coach',".api_get_user_id().",".$nb_days_acess_before.", ".$nb_days_acess_after.", ".$id_session_category.", ".$id_visibility.")";
  127. Database::query($sql_insert);
  128. $session_id = Database::insert_id();
  129. if (!empty($session_id)) {
  130. //Adding to the correct URL
  131. require_once api_get_path(LIBRARY_PATH).'urlmanager.lib.php';
  132. $tbl_user_rel_access_url= Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_USER);
  133. $access_url_id = api_get_current_access_url_id();
  134. UrlManager::add_session_to_url($session_id,$access_url_id);
  135. // add event to system log
  136. $user_id = api_get_user_id();
  137. event_system(LOG_SESSION_CREATE, LOG_SESSION_ID, $session_id, api_get_utc_datetime(), $user_id);
  138. }
  139. return $session_id;
  140. }
  141. }
  142. }
  143. function session_name_exists($session_name) {
  144. $session_name = Database::escape_string($session_name);
  145. $result = Database::fetch_array(Database::query("SELECT COUNT(*) as count FROM ".Database::get_main_table(TABLE_MAIN_SESSION)." WHERE name = '$session_name' "));
  146. return $result['count'] > 0;
  147. }
  148. function get_count_admin() {
  149. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  150. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  151. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  152. $where = '';
  153. $user_id = api_get_user_id();
  154. if (api_is_session_admin()==true) {
  155. $where.=" WHERE s.session_admin_id = $user_id ";
  156. }
  157. $query_rows = "SELECT count(*) as total_rows
  158. FROM $tbl_session s
  159. LEFT JOIN $tbl_session_category sc ON s.session_category_id = sc.id
  160. INNER JOIN $tbl_user u ON s.id_coach = u.user_id
  161. $where ";
  162. global $_configuration;
  163. if ($_configuration['multiple_access_urls']) {
  164. $table_access_url_rel_session= Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  165. $access_url_id = api_get_current_access_url_id();
  166. if ($access_url_id != -1) {
  167. $query_rows = "SELECT count(*) as total_rows
  168. FROM $tbl_session s
  169. LEFT JOIN $tbl_session_category sc ON s.session_category_id = sc.id
  170. INNER JOIN $tbl_user u ON s.id_coach = u.user_id
  171. INNER JOIN $table_access_url_rel_session ar ON ar.session_id = s.id
  172. $where ";
  173. }
  174. }
  175. $result_rows = Database::query($query_rows);
  176. $recorset = Database::fetch_array($result_rows);
  177. $num = $recorset['total_rows'];
  178. return $num;
  179. }
  180. /**
  181. * Gets the admin session list callback of the admin/session_list.php page
  182. * @param array order and limit keys
  183. */
  184. public function get_sessions_admin($options) {
  185. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  186. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  187. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  188. $where = 'WHERE 1=1 ';
  189. $user_id = api_get_user_id();
  190. if (api_is_session_admin()==true) {
  191. $where.=" AND s.session_admin_id = $user_id ";
  192. }
  193. $coach_name = " CONCAT (u.lastname , ' ', u.firstname) as coach_name ";
  194. if (api_is_western_name_order()) {
  195. $coach_name = " CONCAT (u.firstname, ' ', u.lastname) as coach_name ";
  196. }
  197. $today = api_get_utc_datetime();
  198. $today = api_strtotime($today);
  199. $today = date('Y-m-d', $today);
  200. $select = "SELECT * FROM (SELECT
  201. IF (
  202. (s.date_start <= '$today' AND '$today' < s.date_end) OR
  203. (s.date_start = '0000-00-00' AND s.date_end = '0000-00-00' ) OR
  204. (s.date_start <= '$today' AND '0000-00-00' = s.date_end) OR
  205. ('$today' < s.date_end AND '0000-00-00' = s.date_start)
  206. , 1, 0)
  207. as session_active,
  208. s.name, nbr_courses, s.date_start, s.date_end, $coach_name, sc.name as category_name, s.visibility, u.user_id, s.id";
  209. $query = "$select FROM $tbl_session s
  210. LEFT JOIN $tbl_session_category sc ON s.session_category_id = sc.id
  211. INNER JOIN $tbl_user u ON s.id_coach = u.user_id ".
  212. $where;
  213. if ($_configuration['multiple_access_urls']) {
  214. $table_access_url_rel_session= Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  215. $access_url_id = api_get_current_access_url_id();
  216. if ($access_url_id != -1) {
  217. $where.= " AND ar.access_url_id = $access_url_id ";
  218. $query = "$select
  219. FROM $tbl_session s
  220. LEFT JOIN $tbl_session_category sc ON s.session_category_id = sc.id
  221. INNER JOIN $tbl_user u ON s.id_coach = u.user_id
  222. INNER JOIN $table_access_url_rel_session ar ON ar.session_id = s.id
  223. $where";
  224. }
  225. }
  226. $query .= ") AS session_table";
  227. if (!empty($options['where'])) {
  228. $query .= ' WHERE '.$options['where'];
  229. }
  230. $query .= " ORDER BY ".$options['order']." LIMIT ".$options['limit'];
  231. // echo $query;
  232. $result = Database::query($query);
  233. $formatted_sessions = array();
  234. if (Database::num_rows($result)) {
  235. $sessions = Database::store_result($result);
  236. foreach ($sessions as $session) {
  237. $session['name'] = Display::url($session['name'], "resume_session.php?id_session=".$session['id']);
  238. $session['coach_name'] = Display::url($session['coach_name'], "user_information.php?user_id=".$session['user_id']);
  239. if ($session['date_start'] == '0000-00-00' && $session['date_end'] == '0000-00-00') {
  240. // $session['session_active'] = 1;
  241. }
  242. if ($session['session_active'] == 1) {
  243. $session['session_active'] = Display::return_icon('accept.png', get_lang('Active'), array(), 22);
  244. } else {
  245. $session['session_active'] = Display::return_icon('error.png', get_lang('Inactive'), array(), 22);
  246. }
  247. if ($session['date_start'] == '0000-00-00') {
  248. $session['date_start'] = '';
  249. }
  250. if ($session['date_end'] == '0000-00-00') {
  251. $session['date_end'] = '';
  252. }
  253. switch ($session['visibility']) {
  254. case SESSION_VISIBLE_READ_ONLY: //1
  255. $session['visibility'] = get_lang('ReadOnly');
  256. break;
  257. case SESSION_VISIBLE: //2
  258. $session['visibility'] = get_lang('Visible');
  259. break;
  260. case SESSION_INVISIBLE: //3
  261. $session['visibility'] = api_ucfirst(get_lang('Invisible'));
  262. break;
  263. }
  264. $formatted_sessions[] = $session;
  265. }
  266. }
  267. return $formatted_sessions;
  268. }
  269. /**
  270. * Creates a new course code based in given code
  271. *
  272. * @param string wanted code
  273. * <code>
  274. * $wanted_code = 'curse' if there are in the DB codes like curse1 curse2 the function will return: course3
  275. * if the course code doest not exist in the DB the same course code will be returned
  276. * </code>
  277. * @return string wanted unused code
  278. */
  279. function generate_nice_next_session_name($session_name) {
  280. $session_name_ok = !self::session_name_exists($session_name);
  281. if (!$session_name_ok) {
  282. $table = Database::get_main_table(TABLE_MAIN_SESSION);
  283. $session_name = Database::escape_string($session_name);
  284. $sql = "SELECT count(*) as count FROM $table WHERE name LIKE '$session_name%'";
  285. $result = Database::query($sql);
  286. if (Database::num_rows($result) > 0 ) {
  287. $row = Database::fetch_array($result);
  288. $count = $row['count'] + 1;
  289. $session_name = $session_name.'_'.$count;
  290. $result = self::session_name_exists($session_name);
  291. if (!$result) {
  292. return $session_name;
  293. }
  294. }
  295. return false;
  296. }
  297. return $session_name;
  298. }
  299. /**
  300. * Edit a session
  301. * @author Carlos Vargas from existing code
  302. * @param integer id
  303. * @param string name
  304. * @param integer year_start
  305. * @param integer month_start
  306. * @param integer day_start
  307. * @param integer year_end
  308. * @param integer month_end
  309. * @param integer day_end
  310. * @param integer nb_days_acess_before
  311. * @param integer nb_days_acess_after
  312. * @param integer nolimit
  313. * @param integer id_coach
  314. * @param integer id_session_category
  315. * @return $id;
  316. * The parameter id is a primary key
  317. **/
  318. public static function edit_session ($id,$name,$year_start,$month_start,$day_start,$year_end,$month_end,$day_end,$nb_days_acess_before,$nb_days_acess_after,$nolimit,$id_coach, $id_session_category, $id_visibility, $start_limit = true, $end_limit = true) {
  319. global $_user;
  320. $name=trim(stripslashes($name));
  321. $year_start=intval($year_start);
  322. $month_start=intval($month_start);
  323. $day_start=intval($day_start);
  324. $year_end=intval($year_end);
  325. $month_end=intval($month_end);
  326. $day_end=intval($day_end);
  327. $id_coach= intval($id_coach);
  328. $nb_days_acess_before= intval($nb_days_acess_before);
  329. $nb_days_acess_after = intval($nb_days_acess_after);
  330. $id_session_category = intval($id_session_category);
  331. $id_visibility = intval($id_visibility);
  332. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  333. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  334. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  335. if (empty($nolimit)) {
  336. $date_start = "$year_start-".(($month_start < 10)?"0$month_start":$month_start)."-".(($day_start < 10)?"0$day_start":$day_start);
  337. $date_end = "$year_end-".(($month_end < 10)?"0$month_end":$month_end)."-".(($day_end < 10)?"0$day_end":$day_end);
  338. } else {
  339. $date_start = "0000-00-00";
  340. $date_end = "0000-00-00";
  341. $id_visibility = 1;//force read only
  342. }
  343. if (!empty($no_end_limit)) {
  344. $date_end = "0000-00-00";
  345. }
  346. if (empty($end_limit)) {
  347. $date_end ="0000-00-00";
  348. $id_visibility = 1;//force read only
  349. }
  350. if (empty($start_limit)) {
  351. $date_start ="0000-00-00";
  352. }
  353. if (empty($name)) {
  354. $msg=get_lang('SessionNameIsRequired');
  355. return $msg;
  356. } elseif (empty($id_coach)) {
  357. $msg=get_lang('CoachIsRequired');
  358. return $msg;
  359. } elseif (!empty($start_limit) && empty($nolimit) && (!$month_start || !$day_start || !$year_start || !checkdate($month_start,$day_start,$year_start))) {
  360. $msg=get_lang('InvalidStartDate');
  361. return $msg;
  362. } elseif (!empty($end_limit) && empty($nolimit) && (!$month_end || !$day_end || !$year_end || !checkdate($month_end,$day_end,$year_end))) {
  363. $msg=get_lang('InvalidEndDate');
  364. return $msg;
  365. } elseif (!empty($start_limit) && !empty($end_limit) && empty($nolimit) && $date_start >= $date_end) {
  366. $msg=get_lang('StartDateShouldBeBeforeEndDate');
  367. return $msg;
  368. } else {
  369. $rs = Database::query("SELECT id FROM $tbl_session WHERE name='".Database::escape_string($name)."'");
  370. $exists = false;
  371. while ($row = Database::fetch_array($rs)) {
  372. if($row['id']!=$id)
  373. $exists = true;
  374. }
  375. if ($exists) {
  376. $msg=get_lang('SessionNameAlreadyExists');
  377. return $msg;
  378. } else {
  379. $sql="UPDATE $tbl_session " .
  380. "SET name='".Database::escape_string($name)."',
  381. date_start='".$date_start."',
  382. date_end='".$date_end."',
  383. id_coach='".$id_coach."',
  384. nb_days_access_before_beginning = ".$nb_days_acess_before.",
  385. nb_days_access_after_end = ".$nb_days_acess_after.",
  386. session_category_id = ".$id_session_category." ,
  387. visibility= ".$id_visibility."
  388. WHERE id='$id'";
  389. Database::query($sql);
  390. return $id;
  391. }
  392. }
  393. }
  394. /**
  395. * Delete session
  396. * @author Carlos Vargas from existing code
  397. * @param array id_checked
  398. * @param boolean optional, true if the function is called by a webservice, false otherwise.
  399. * @return void Nothing, or false on error
  400. * The parameters is a array to delete sessions
  401. **/
  402. public static function delete_session ($id_checked,$from_ws = false) {
  403. $tbl_session= Database::get_main_table(TABLE_MAIN_SESSION);
  404. $tbl_session_rel_course= Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  405. $tbl_session_rel_course_rel_user= Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  406. $tbl_session_rel_user= Database::get_main_table(TABLE_MAIN_SESSION_USER);
  407. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  408. $tbl_url_session = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  409. global $_user;
  410. if(is_array($id_checked)) {
  411. $id_checked = Database::escape_string(implode(',',$id_checked));
  412. } else {
  413. $id_checked = intval($id_checked);
  414. }
  415. if (!api_is_platform_admin() && !$from_ws) {
  416. $sql = 'SELECT session_admin_id FROM '.Database :: get_main_table(TABLE_MAIN_SESSION).' WHERE id='.$id_checked;
  417. $rs = Database::query($sql);
  418. if (Database::result($rs,0,0)!=$_user['user_id']) {
  419. api_not_allowed(true);
  420. }
  421. }
  422. Database::query("DELETE FROM $tbl_session WHERE id IN($id_checked)");
  423. Database::query("DELETE FROM $tbl_session_rel_course WHERE id_session IN($id_checked)");
  424. Database::query("DELETE FROM $tbl_session_rel_course_rel_user WHERE id_session IN($id_checked)");
  425. Database::query("DELETE FROM $tbl_session_rel_user WHERE id_session IN($id_checked)");
  426. Database::query("DELETE FROM $tbl_url_session WHERE session_id IN($id_checked)");
  427. // delete extra session fields
  428. $t_sf = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  429. $t_sfv = Database::get_main_table(TABLE_MAIN_SESSION_FIELD_VALUES);
  430. // Delete extra fields from session where field variable is "SECCION"
  431. $sql = "SELECT t_sfv.field_id FROM $t_sfv t_sfv, $t_sf t_sf WHERE t_sfv.session_id = '$id_checked' AND t_sf.field_variable = 'SECCION' ";
  432. $rs_field = Database::query($sql);
  433. $field_id = 0;
  434. if (Database::num_rows($rs_field) == 1) {
  435. $row_field = Database::fetch_row($rs_field);
  436. $field_id = $row_field[0];
  437. $sql_delete_sfv = "DELETE FROM $t_sfv WHERE session_id = '$id_checked' AND field_id = '$field_id'";
  438. $rs_delete_sfv = Database::query($sql_delete_sfv);
  439. }
  440. $sql = "SELECT * FROM $t_sfv WHERE field_id = '$field_id' ";
  441. $rs_field_id = Database::query($sql);
  442. if (Database::num_rows($rs_field_id) == 0) {
  443. $sql_delete_sf = "DELETE FROM $t_sf WHERE id = '$field_id'";
  444. $rs_delete_sf = Database::query($sql_delete_sf);
  445. }
  446. /*
  447. $sql = "SELECT distinct field_id FROM $t_sfv WHERE session_id = '$id_checked'";
  448. $res_field_ids = @Database::query($sql);
  449. if (Database::num_rows($res_field_ids) > 0) {
  450. while($row_field_id = Database::fetch_row($res_field_ids)){
  451. $field_ids[] = $row_field_id[0];
  452. }
  453. }
  454. //delete from table_session_field_value from a given session id
  455. $sql_session_field_value = "DELETE FROM $t_sfv WHERE session_id = '$id_checked'";
  456. @Database::query($sql_session_field_value);
  457. $sql = "SELECT distinct field_id FROM $t_sfv";
  458. $res_field_all_ids = @Database::query($sql);
  459. if (Database::num_rows($res_field_all_ids) > 0) {
  460. while($row_field_all_id = Database::fetch_row($res_field_all_ids)){
  461. $field_all_ids[] = $row_field_all_id[0];
  462. }
  463. }
  464. if (count($field_ids) > 0 && count($field_all_ids) > 0) {
  465. foreach($field_ids as $field_id) {
  466. // check if field id is used into table field value
  467. if (in_array($field_id,$field_all_ids)) {
  468. continue;
  469. } else {
  470. $sql_session_field = "DELETE FROM $t_sf WHERE id = '$field_id'";
  471. Database::query($sql_session_field);
  472. }
  473. }
  474. }
  475. */
  476. // Add event to system log
  477. $user_id = api_get_user_id();
  478. event_system(LOG_SESSION_DELETE, LOG_SESSION_ID, $id_checked, api_get_utc_datetime(), $user_id);
  479. }
  480. /**
  481. * Subscribes users to the given session and optionally (default) unsubscribes previous users
  482. * @author Carlos Vargas from existing code
  483. * @param integer Session ID
  484. * @param array List of user IDs
  485. * @param bool Whether to unsubscribe existing users (true, default) or not (false)
  486. * @return void Nothing, or false on error
  487. **/
  488. public static function suscribe_users_to_session($id_session, $user_list, $session_visibility = SESSION_VISIBLE_READ_ONLY, $empty_users=true, $send_email=false) {
  489. if ($id_session!= strval(intval($id_session))) return false;
  490. foreach($user_list as $intUser){
  491. if ($intUser!= strval(intval($intUser))) return false;
  492. }
  493. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  494. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  495. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  496. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  497. $session_info = api_get_session_info($id_session);
  498. $session_name = $session_info['name'];
  499. //from function parameter
  500. if (empty($session_visibility)) {
  501. $session_visibility = $session_info['visibility']; //loaded from DB
  502. //default status loaded if empty
  503. if (empty($session_visibility))
  504. $session_visibility = SESSION_VISIBLE_READ_ONLY; // by default readonly 1
  505. } else {
  506. if (!in_array($session_visibility, array(SESSION_VISIBLE_READ_ONLY, SESSION_VISIBLE, SESSION_INVISIBLE))) {
  507. $session_visibility = SESSION_VISIBLE_READ_ONLY;
  508. }
  509. }
  510. $sql = "SELECT id_user FROM $tbl_session_rel_course_rel_user WHERE id_session = '$id_session' ";
  511. $result = Database::query($sql);
  512. $existingUsers = array();
  513. while($row = Database::fetch_array($result)) {
  514. $existingUsers[] = $row['id_user'];
  515. }
  516. $sql = "SELECT course_code FROM $tbl_session_rel_course WHERE id_session = '$id_session'";
  517. $result = Database::query($sql);
  518. $course_list = array();
  519. while($row = Database::fetch_array($result)) {
  520. $course_list[]=$row['course_code'];
  521. }
  522. if ($send_email) {
  523. //global $_configuration;
  524. //sending emails only
  525. if (is_array($user_list) && count($user_list)>0) {
  526. foreach($user_list as $enreg_user) {
  527. if (!in_array($enreg_user,$existingUsers )) {
  528. //send email
  529. $emailbody = '';
  530. $emailheaders = '';
  531. $user_info = UserManager::get_user_info_by_id($enreg_user);
  532. $firstname = $user_info['firstname'];
  533. $lastname = $user_info['lastname'];
  534. $email = $user_info['email'];
  535. $emailto = '"'.$firstname.' '.$lastname.'" <'.$email.'>';
  536. $emailsubject = '['.get_setting('siteName').'] '.get_lang('YourReg').' '.get_setting('siteName');
  537. $emailheaders = 'From: '.get_setting('administratorName').' '.get_setting('administratorSurname').' <'.get_setting('emailAdministrator').">\n";
  538. $emailheaders .= 'Reply-To: '.get_setting('emailAdministrator');
  539. $emailbody = get_lang('Dear')." ".stripslashes(api_get_person_name($firstname, $lastname)).",\n\n".sprintf(get_lang('YouAreRegisterToSessionX'), $session_name) ." \n\n" .get_lang('Address') ." ". get_setting('siteName') ." ". get_lang('Is') ." : ". api_get_path(WEB_PATH) ."\n\n". get_lang('Problem'). "\n\n". get_lang('Formula').",\n\n".get_setting('administratorName')." ".get_setting('administratorSurname')."\n". get_lang('Manager'). " ".get_setting('siteName')."\nT. ".get_setting('administratorTelephone')."\n" .get_lang('Email') ." : ".get_setting('emailAdministrator');
  540. @api_send_mail($emailto, $emailsubject, $emailbody, $emailheaders);
  541. }
  542. }
  543. }
  544. }
  545. foreach ($course_list as $enreg_course) {
  546. // for each course in the session
  547. $nbr_users=0;
  548. $enreg_course = Database::escape_string($enreg_course);
  549. // delete existing users
  550. if ($empty_users) {
  551. foreach ($existingUsers as $existing_user) {
  552. if (!in_array($existing_user, $user_list)) {
  553. $sql = "DELETE FROM $tbl_session_rel_course_rel_user WHERE id_session='$id_session' AND course_code='$enreg_course' AND id_user='$existing_user' ";
  554. Database::query($sql);
  555. if (Database::affected_rows()) {
  556. $nbr_users--;
  557. }
  558. }
  559. }
  560. }
  561. // insert new users into session_rel_course_rel_user and ignore if they already exist
  562. foreach ($user_list as $enreg_user) {
  563. if(!in_array($enreg_user, $existingUsers)) {
  564. $enreg_user = Database::escape_string($enreg_user);
  565. $insert_sql = "INSERT IGNORE INTO $tbl_session_rel_course_rel_user(id_session,course_code,id_user,visibility) VALUES('$id_session','$enreg_course','$enreg_user','$session_visibility')";
  566. Database::query($insert_sql);
  567. if(Database::affected_rows()) {
  568. $nbr_users++;
  569. }
  570. }
  571. }
  572. // count users in this session-course relation
  573. $sql = "SELECT COUNT(id_user) as nbUsers FROM $tbl_session_rel_course_rel_user WHERE id_session='$id_session' AND course_code='$enreg_course' AND status<>2";
  574. $rs = Database::query($sql);
  575. list($nbr_users) = Database::fetch_array($rs);
  576. // update the session-course relation to add the users total
  577. $update_sql = "UPDATE $tbl_session_rel_course SET nbr_users=$nbr_users WHERE id_session='$id_session' AND course_code='$enreg_course'";
  578. Database::query($update_sql);
  579. }
  580. // Delete users from the session
  581. if ($empty_users===true) {
  582. Database::query("DELETE FROM $tbl_session_rel_user WHERE id_session = $id_session AND relation_type<>".SESSION_RELATION_TYPE_RRHH."");
  583. }
  584. // Insert missing users into session
  585. $nbr_users = 0;
  586. foreach ($user_list as $enreg_user) {
  587. $enreg_user = Database::escape_string($enreg_user);
  588. $nbr_users++;
  589. $insert_sql = "INSERT IGNORE INTO $tbl_session_rel_user (id_session, id_user) VALUES ('$id_session','$enreg_user')";
  590. Database::query($insert_sql);
  591. }
  592. // update number of users in the session
  593. $nbr_users = count($user_list);
  594. if ($empty_users) {
  595. // update number of users in the session
  596. $update_sql = "UPDATE $tbl_session SET nbr_users= $nbr_users WHERE id='$id_session' ";
  597. Database::query($update_sql);
  598. } else {
  599. echo $update_sql = "UPDATE $tbl_session SET nbr_users= nbr_users + $nbr_users WHERE id='$id_session' ";
  600. Database::query($update_sql);
  601. }
  602. }
  603. /**
  604. * Unsubscribe user from session
  605. *
  606. * @param int Session id
  607. * @param int User id
  608. * @return bool True in case of success, false in case of error
  609. */
  610. public static function unsubscribe_user_from_session($session_id, $user_id) {
  611. $session_id = (int)$session_id;
  612. $user_id = (int)$user_id;
  613. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  614. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  615. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  616. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  617. $delete_sql = "DELETE FROM $tbl_session_rel_user WHERE id_session = '$session_id' AND id_user ='$user_id' AND relation_type<>".SESSION_RELATION_TYPE_RRHH."";
  618. Database::query($delete_sql);
  619. $return = Database::affected_rows();
  620. // Update number of users
  621. $update_sql = "UPDATE $tbl_session SET nbr_users= nbr_users - $return WHERE id='$session_id' ";
  622. Database::query($update_sql);
  623. // Get the list of courses related to this session
  624. $course_list = SessionManager::get_course_list_by_session_id($session_id);
  625. if(!empty($course_list)) {
  626. foreach($course_list as $course) {
  627. $course_code = $course['code'];
  628. // Delete user from course
  629. Database::query("DELETE FROM $tbl_session_rel_course_rel_user WHERE id_session='$session_id' AND course_code='$course_code' AND id_user='$user_id'");
  630. if(Database::affected_rows()) {
  631. // Update number of users in this relation
  632. Database::query("UPDATE $tbl_session_rel_course SET nbr_users=nbr_users - 1 WHERE id_session='$session_id' AND course_code='$course_code'");
  633. }
  634. }
  635. }
  636. return true;
  637. }
  638. /** Subscribes courses to the given session and optionally (default) unsubscribes previous users
  639. * @author Carlos Vargas from existing code
  640. * @param int Session ID
  641. * @param array List of courses IDs
  642. * @param bool Whether to unsubscribe existing users (true, default) or not (false)
  643. * @return void Nothing, or false on error
  644. **/
  645. public static function add_courses_to_session ($id_session, $course_list, $empty_courses=true) {
  646. // security checks
  647. if ($id_session!= strval(intval($id_session))) { return false; }
  648. //foreach($course_list as $intCourse){
  649. // if ($intCourse!= strval(intval($intCourse))) { return false; }
  650. //}
  651. // initialisation
  652. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  653. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  654. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  655. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  656. $tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
  657. // get general coach ID
  658. $id_coach = Database::query("SELECT id_coach FROM $tbl_session WHERE id=$id_session");
  659. $id_coach = Database::fetch_array($id_coach);
  660. $id_coach = $id_coach[0];
  661. // get list of courses subscribed to this session
  662. $rs = Database::query("SELECT course_code FROM $tbl_session_rel_course WHERE id_session=$id_session");
  663. $existingCourses = Database::store_result($rs);
  664. $nbr_courses=count($existingCourses);
  665. // get list of users subscribed to this session
  666. $sql="SELECT id_user
  667. FROM $tbl_session_rel_user
  668. WHERE id_session = $id_session AND relation_type<>".SESSION_RELATION_TYPE_RRHH."";
  669. $result=Database::query($sql);
  670. $user_list=Database::store_result($result);
  671. // remove existing courses from the session
  672. if ($empty_courses===true) {
  673. foreach ($existingCourses as $existingCourse) {
  674. if (!in_array($existingCourse['course_code'], $course_list)){
  675. Database::query("DELETE FROM $tbl_session_rel_course WHERE course_code='".$existingCourse['course_code']."' AND id_session=$id_session");
  676. Database::query("DELETE FROM $tbl_session_rel_course_rel_user WHERE course_code='".$existingCourse['course_code']."' AND id_session=$id_session");
  677. }
  678. }
  679. $nbr_courses=0;
  680. }
  681. // Pass through the courses list we want to add to the session
  682. foreach ($course_list as $enreg_course) {
  683. $enreg_course = Database::escape_string($enreg_course);
  684. $exists = false;
  685. // check if the course we want to add is already subscribed
  686. foreach ($existingCourses as $existingCourse) {
  687. if ($enreg_course == $existingCourse['course_code']) {
  688. $exists=true;
  689. }
  690. }
  691. if (!$exists) {
  692. //if the course isn't subscribed yet
  693. $sql_insert_rel_course= "INSERT INTO $tbl_session_rel_course (id_session,course_code) VALUES ('$id_session','$enreg_course')";
  694. Database::query($sql_insert_rel_course);
  695. //We add the current course in the existing courses array, to avoid adding another time the current course
  696. $existingCourses[]=array('course_code'=>$enreg_course);
  697. $nbr_courses++;
  698. // subscribe all the users from the session to this course inside the session
  699. $nbr_users=0;
  700. foreach ($user_list as $enreg_user) {
  701. $enreg_user_id = Database::escape_string($enreg_user['id_user']);
  702. $sql_insert = "INSERT IGNORE INTO $tbl_session_rel_course_rel_user (id_session,course_code,id_user) VALUES ('$id_session','$enreg_course','$enreg_user_id')";
  703. Database::query($sql_insert);
  704. if (Database::affected_rows()) {
  705. $nbr_users++;
  706. }
  707. }
  708. Database::query("UPDATE $tbl_session_rel_course SET nbr_users=$nbr_users WHERE id_session='$id_session' AND course_code='$enreg_course'");
  709. }
  710. }
  711. Database::query("UPDATE $tbl_session SET nbr_courses=$nbr_courses WHERE id='$id_session'");
  712. }
  713. /**
  714. * Unsubscribe course from a session
  715. *
  716. * @param int Session id
  717. * @param int Course id
  718. * @return bool True in case of success, false otherwise
  719. */
  720. public static function unsubscribe_course_from_session($session_id, $course_id) {
  721. $session_id = (int)$session_id;
  722. $course_id = (int)$course_id;
  723. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  724. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  725. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  726. // Get course code
  727. $course_code = CourseManager::get_course_code_from_course_id($course_id);
  728. if($course_code == 0) {
  729. return false;
  730. }
  731. // Unsubscribe course
  732. Database::query("DELETE FROM $tbl_session_rel_course WHERE course_code='$course_code' AND id_session='$session_id'");
  733. $nb_affected = Database::affected_rows();
  734. Database::query("DELETE FROM $tbl_session_rel_course_rel_user WHERE course_code='$course_code' AND id_session='$session_id'");
  735. if($nb_affected > 0) {
  736. // Update number of courses in the session
  737. Database::query("UPDATE $tbl_session SET nbr_courses= nbr_courses + $nb_affected WHERE id='$session_id' ");
  738. return true;
  739. } else {
  740. return false;
  741. }
  742. }
  743. /**
  744. * Creates a new extra field for a given session
  745. * @param string Field's internal variable name
  746. * @param int Field's type
  747. * @param string Field's language var name
  748. * @return int new extra field id
  749. */
  750. public static function create_session_extra_field ($fieldvarname, $fieldtype, $fieldtitle) {
  751. // database table definition
  752. $t_sf = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  753. $fieldvarname = Database::escape_string($fieldvarname);
  754. $fieldtitle = Database::escape_string($fieldtitle);
  755. $fieldtype = (int)$fieldtype;
  756. $time = time();
  757. $sql_field = "SELECT id FROM $t_sf WHERE field_variable = '$fieldvarname'";
  758. $res_field = Database::query($sql_field);
  759. $r_field = Database::fetch_row($res_field);
  760. if (Database::num_rows($res_field)>0) {
  761. $field_id = $r_field[0];
  762. } else {
  763. // save new fieldlabel into course_field table
  764. $sql = "SELECT MAX(field_order) FROM $t_sf";
  765. $res = Database::query($sql);
  766. $order = 0;
  767. if (Database::num_rows($res)>0) {
  768. $row = Database::fetch_row($res);
  769. $order = $row[0]+1;
  770. }
  771. $sql = "INSERT INTO $t_sf
  772. SET field_type = '$fieldtype',
  773. field_variable = '$fieldvarname',
  774. field_display_text = '$fieldtitle',
  775. field_order = '$order',
  776. tms = FROM_UNIXTIME($time)";
  777. $result = Database::query($sql);
  778. $field_id=Database::insert_id();
  779. }
  780. return $field_id;
  781. }
  782. /**
  783. * Update an extra field value for a given session
  784. * @param integer Course ID
  785. * @param string Field variable name
  786. * @param string Field value
  787. * @return boolean true if field updated, false otherwise
  788. */
  789. public static function update_session_extra_field_value ($session_id,$fname,$fvalue='') {
  790. $t_sf = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  791. $t_sfv = Database::get_main_table(TABLE_MAIN_SESSION_FIELD_VALUES);
  792. $fname = Database::escape_string($fname);
  793. $session_id = (int)$session_id;
  794. $fvalues = '';
  795. if(is_array($fvalue))
  796. {
  797. foreach($fvalue as $val)
  798. {
  799. $fvalues .= Database::escape_string($val).';';
  800. }
  801. if(!empty($fvalues))
  802. {
  803. $fvalues = substr($fvalues,0,-1);
  804. }
  805. }
  806. else
  807. {
  808. $fvalues = Database::escape_string($fvalue);
  809. }
  810. $sqlsf = "SELECT * FROM $t_sf WHERE field_variable='$fname'";
  811. $ressf = Database::query($sqlsf);
  812. if(Database::num_rows($ressf)==1)
  813. { //ok, the field exists
  814. // Check if enumerated field, if the option is available
  815. $rowsf = Database::fetch_array($ressf);
  816. $tms = time();
  817. $sqlsfv = "SELECT * FROM $t_sfv WHERE session_id = '$session_id' AND field_id = '".$rowsf['id']."' ORDER BY id";
  818. $ressfv = Database::query($sqlsfv);
  819. $n = Database::num_rows($ressfv);
  820. if ($n>1) {
  821. //problem, we already have to values for this field and user combination - keep last one
  822. while($rowsfv = Database::fetch_array($ressfv))
  823. {
  824. if($n > 1)
  825. {
  826. $sqld = "DELETE FROM $t_sfv WHERE id = ".$rowsfv['id'];
  827. $resd = Database::query($sqld);
  828. $n--;
  829. }
  830. $rowsfv = Database::fetch_array($ressfv);
  831. if($rowsfv['field_value'] != $fvalues)
  832. {
  833. $sqlu = "UPDATE $t_sfv SET field_value = '$fvalues', tms = FROM_UNIXTIME($tms) WHERE id = ".$rowsfv['id'];
  834. $resu = Database::query($sqlu);
  835. return($resu?true:false);
  836. }
  837. return true;
  838. }
  839. } else if ($n==1) {
  840. //we need to update the current record
  841. $rowsfv = Database::fetch_array($ressfv);
  842. if($rowsfv['field_value'] != $fvalues)
  843. {
  844. $sqlu = "UPDATE $t_sfv SET field_value = '$fvalues', tms = FROM_UNIXTIME($tms) WHERE id = ".$rowsfv['id'];
  845. //error_log('UM::update_extra_field_value: '.$sqlu);
  846. $resu = Database::query($sqlu);
  847. return($resu?true:false);
  848. }
  849. return true;
  850. } else {
  851. $sqli = "INSERT INTO $t_sfv (session_id,field_id,field_value,tms) " .
  852. "VALUES ('$session_id',".$rowsf['id'].",'$fvalues',FROM_UNIXTIME($tms))";
  853. //error_log('UM::update_extra_field_value: '.$sqli);
  854. $resi = Database::query($sqli);
  855. return($resi?true:false);
  856. }
  857. } else {
  858. return false; //field not found
  859. }
  860. }
  861. /**
  862. * Checks the relationship between a session and a course.
  863. * @param int $session_id
  864. * @param int $course_id
  865. * @return bool Returns TRUE if the session and the course are related, FALSE otherwise.
  866. * */
  867. public static function relation_session_course_exist ($session_id, $course_id) {
  868. $tbl_session_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  869. $return_value = false;
  870. $sql= "SELECT course_code FROM $tbl_session_course WHERE id_session = ".Database::escape_string($session_id)." AND course_code = '".Database::escape_string($course_id)."'";
  871. $result = Database::query($sql);
  872. $num = Database::num_rows($result);
  873. if ($num>0) {
  874. $return_value = true;
  875. }
  876. return $return_value;
  877. }
  878. /**
  879. * Get the session information by name
  880. * @param string session name
  881. * @return mixed false if the session does not exist, array if the session exist
  882. * */
  883. public static function get_session_by_name ($session_name) {
  884. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  885. $sql = 'SELECT id, id_coach, date_start, date_end FROM '.$tbl_session.' WHERE name="'.Database::escape_string($session_name).'"';
  886. $result = Database::query($sql);
  887. $num = Database::num_rows($result);
  888. if ($num>0){
  889. return Database::fetch_array($result);
  890. } else {
  891. return false;
  892. }
  893. }
  894. /**
  895. * Create a session category
  896. * @author Jhon Hinojosa <jhon.hinojosa@dokeos.com>, from existing code
  897. * @param string name
  898. * @param integer year_start
  899. * @param integer month_start
  900. * @param integer day_start
  901. * @param integer year_end
  902. * @param integer month_end
  903. * @param integer day_end
  904. * @return $id_session;
  905. **/
  906. public static function create_category_session($sname,$syear_start,$smonth_start,$sday_start,$syear_end,$smonth_end, $sday_end){
  907. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  908. $name= trim($sname);
  909. $year_start= intval($syear_start);
  910. $month_start=intval($smonth_start);
  911. $day_start=intval($sday_start);
  912. $year_end=intval($syear_end);
  913. $month_end=intval($smonth_end);
  914. $day_end=intval($sday_end);
  915. $date_start = "$year_start-".(($month_start < 10)?"0$month_start":$month_start)."-".(($day_start < 10)?"0$day_start":$day_start);
  916. $date_end = "$year_end-".(($month_end < 10)?"0$month_end":$month_end)."-".(($day_end < 10)?"0$day_end":$day_end);
  917. if (empty($name)) {
  918. $msg=get_lang('SessionCategoryNameIsRequired');
  919. return $msg;
  920. } elseif (!$month_start || !$day_start || !$year_start || !checkdate($month_start,$day_start,$year_start)) {
  921. $msg=get_lang('InvalidStartDate');
  922. return $msg;
  923. } elseif (!$month_end && !$day_end && !$year_end) {
  924. $date_end = "null";
  925. } elseif (!$month_end || !$day_end || !$year_end || !checkdate($month_end,$day_end,$year_end)) {
  926. $msg=get_lang('InvalidEndDate');
  927. return $msg;
  928. } elseif($date_start >= $date_end) {
  929. $msg=get_lang('StartDateShouldBeBeforeEndDate');
  930. return $msg;
  931. }
  932. $access_url_id = api_get_current_access_url_id();
  933. $sql = "INSERT INTO $tbl_session_category (name, date_start, date_end, access_url_id)
  934. VALUES('".Database::escape_string($name)."','$date_start','$date_end', '$access_url_id')";
  935. Database::query($sql);
  936. $id_session = Database::insert_id();
  937. // Add event to system log
  938. $user_id = api_get_user_id();
  939. event_system(LOG_SESSION_CATEGORY_CREATE, LOG_SESSION_CATEGORY_ID, $id_session, api_get_utc_datetime(), $user_id);
  940. return $id_session;
  941. }
  942. /**
  943. * Edit a sessions categories
  944. * @author Jhon Hinojosa <jhon.hinojosa@dokeos.com>,from existing code
  945. * @param integer id
  946. * @param string name
  947. * @param integer year_start
  948. * @param integer month_start
  949. * @param integer day_start
  950. * @param integer year_end
  951. * @param integer month_end
  952. * @param integer day_end
  953. * @return $id;
  954. * The parameter id is a primary key
  955. **/
  956. public static function edit_category_session($id, $sname,$syear_start,$smonth_start,$sday_start,$syear_end,$smonth_end, $sday_end){
  957. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  958. $name= trim($sname);
  959. $year_start= intval($syear_start);
  960. $month_start=intval($smonth_start);
  961. $day_start=intval($sday_start);
  962. $year_end=intval($syear_end);
  963. $month_end=intval($smonth_end);
  964. $day_end=intval($sday_end);
  965. $id=intval($id);
  966. $date_start = "$year_start-".(($month_start < 10)?"0$month_start":$month_start)."-".(($day_start < 10)?"0$day_start":$day_start);
  967. $date_end = "$year_end-".(($month_end < 10)?"0$month_end":$month_end)."-".(($day_end < 10)?"0$day_end":$day_end);
  968. if (empty($name)) {
  969. $msg=get_lang('SessionCategoryNameIsRequired');
  970. return $msg;
  971. } elseif (!$month_start || !$day_start || !$year_start || !checkdate($month_start,$day_start,$year_start)) {
  972. $msg=get_lang('InvalidStartDate');
  973. return $msg;
  974. } elseif (!$month_end && !$day_end && !$year_end) {
  975. $date_end = null;
  976. } elseif (!$month_end || !$day_end || !$year_end || !checkdate($month_end,$day_end,$year_end)) {
  977. $msg=get_lang('InvalidEndDate');
  978. return $msg;
  979. } elseif($date_start >= $date_end) {
  980. $msg=get_lang('StartDateShouldBeBeforeEndDate');
  981. return $msg;
  982. }
  983. if ( $date_end <> null ) {
  984. $sql = "UPDATE $tbl_session_category SET name = '".Database::escape_string($name)."', date_start = '$date_start' ".
  985. ", date_end = '$date_end' WHERE id= '".$id."' ";
  986. } else {
  987. $sql = "UPDATE $tbl_session_category SET name = '".Database::escape_string($name)."', date_start = '$date_start' ".
  988. ", date_end = NULL WHERE id= '".$id."' ";
  989. }
  990. $result = Database::query($sql);
  991. return ($result? true:false);
  992. }
  993. /**
  994. * Delete sessions categories
  995. * @author Jhon Hinojosa <jhon.hinojosa@dokeos.com>, from existing code
  996. * @param array id_checked
  997. * @param bool include delete session
  998. * @param bool optional, true if the function is called by a webservice, false otherwise.
  999. * @return void Nothing, or false on error
  1000. * The parameters is a array to delete sessions
  1001. **/
  1002. public static function delete_session_category($id_checked, $delete_session = false,$from_ws = false){
  1003. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  1004. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  1005. if (is_array($id_checked)) {
  1006. $id_checked = Database::escape_string(implode(',',$id_checked));
  1007. } else {
  1008. $id_checked = intval($id_checked);
  1009. }
  1010. //Setting session_category_id to 0
  1011. $sql = "UPDATE $tbl_session SET session_category_id = 0 WHERE session_category_id IN (".$id_checked.")";
  1012. $result = Database::query($sql);
  1013. $sql = "SELECT id FROM $tbl_session WHERE session_category_id IN (".$id_checked.")";
  1014. $result = @Database::query($sql);
  1015. while ($rows = Database::fetch_array($result)) {
  1016. $session_id = $rows['id'];
  1017. if ($delete_session) {
  1018. if ($from_ws) {
  1019. SessionManager::delete_session($session_id,true);
  1020. } else {
  1021. SessionManager::delete_session($session_id);
  1022. }
  1023. }
  1024. }
  1025. $sql = "DELETE FROM $tbl_session_category WHERE id IN (".$id_checked.")";
  1026. $rs = @Database::query($sql);
  1027. $result = Database::affected_rows();
  1028. // Add event to system log
  1029. $user_id = api_get_user_id();
  1030. event_system(LOG_SESSION_CATEGORY_DELETE, LOG_SESSION_CATEGORY_ID, $id_checked, api_get_utc_datetime(), $user_id);
  1031. // delete extra session fields where field variable is "PERIODO"
  1032. $t_sf = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  1033. $t_sfv = Database::get_main_table(TABLE_MAIN_SESSION_FIELD_VALUES);
  1034. $sql = "SELECT t_sfv.field_id FROM $t_sfv t_sfv, $t_sf t_sf WHERE t_sfv.session_id = '$id_checked' AND t_sf.field_variable = 'PERIODO' ";
  1035. $rs_field = Database::query($sql);
  1036. $field_id = 0;
  1037. if (Database::num_rows($rs_field) > 0) {
  1038. $row_field = Database::fetch_row($rs_field);
  1039. $field_id = $row_field[0];
  1040. $sql_delete_sfv = "DELETE FROM $t_sfv WHERE session_id = '$id_checked' AND field_id = '$field_id'";
  1041. $rs_delete_sfv = Database::query($sql_delete_sfv);
  1042. }
  1043. $sql = "SELECT * FROM $t_sfv WHERE field_id = '$field_id' ";
  1044. $rs_field_id = Database::query($sql);
  1045. if (Database::num_rows($rs_field_id) == 0) {
  1046. $sql_delete_sf = "DELETE FROM $t_sf WHERE id = '$field_id'";
  1047. $rs_delete_sf = Database::query($sql_delete_sf);
  1048. }
  1049. return true;
  1050. }
  1051. /**
  1052. * Get a list of sessions of which the given conditions match with an = 'cond'
  1053. * @param array $conditions a list of condition (exemple : array('status =' =>STUDENT) or array('s.name LIKE' => "%$needle%")
  1054. * @param array $order_by a list of fields on which sort
  1055. * @return array An array with all sessions of the platform.
  1056. * @todo optional course code parameter, optional sorting parameters...
  1057. */
  1058. public static function get_sessions_list($conditions = array(), $order_by = array()) {
  1059. $session_table = Database::get_main_table(TABLE_MAIN_SESSION);
  1060. $session_category_table = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  1061. $user_table = Database::get_main_table(TABLE_MAIN_USER);
  1062. $table_access_url_rel_session = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  1063. $access_url_id = api_get_current_access_url_id();
  1064. $return_array = array();
  1065. $sql_query = " SELECT s.id, s.name, s.nbr_courses, s.date_start, s.date_end, u.firstname, u.lastname, sc.name as category_name, s.promotion_id
  1066. FROM $session_table s
  1067. INNER JOIN $user_table u ON s.id_coach = u.user_id
  1068. INNER JOIN $table_access_url_rel_session ar ON ar.session_id = s.id
  1069. LEFT JOIN $session_category_table sc ON s.session_category_id = sc.id
  1070. WHERE ar.access_url_id = $access_url_id ";
  1071. if (count($conditions)>0) {
  1072. $sql_query .= ' AND ';
  1073. foreach ($conditions as $field=>$value) {
  1074. $field = Database::escape_string($field);
  1075. $value = Database::escape_string($value);
  1076. $sql_query .= $field." '".$value."'";
  1077. }
  1078. }
  1079. if (count($order_by)>0) {
  1080. $sql_query .= ' ORDER BY '.Database::escape_string(implode(',',$order_by));
  1081. }
  1082. //echo $sql_query;
  1083. $sql_result = Database::query($sql_query);
  1084. if (Database::num_rows($sql_result)>0) {
  1085. while ($result = Database::fetch_array($sql_result)) {
  1086. $return_array[$result['id']] = $result;
  1087. }
  1088. }
  1089. return $return_array;
  1090. }
  1091. /**
  1092. * Get the session category information by id
  1093. * @param string session category ID
  1094. * @return mixed false if the session category does not exist, array if the session category exists
  1095. */
  1096. public static function get_session_category ($id) {
  1097. $id = intval($id);
  1098. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  1099. $sql = 'SELECT id, name, date_start, date_end FROM '.$tbl_session_category.' WHERE id="'.$id.'"';
  1100. $result = Database::query($sql);
  1101. $num = Database::num_rows($result);
  1102. if ($num>0){
  1103. return Database::fetch_array($result);
  1104. } else {
  1105. return false;
  1106. }
  1107. }
  1108. /**
  1109. * Get all session categories (filter by access_url_id)
  1110. * @return mixed false if the session category does not exist, array if the session category exists
  1111. */
  1112. public static function get_all_session_category() {
  1113. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  1114. $id = api_get_current_access_url_id();
  1115. $sql = 'SELECT * FROM '.$tbl_session_category.' WHERE access_url_id ="'.$id.'" ORDER BY name ASC';
  1116. $result = Database::query($sql);
  1117. if (Database::num_rows($result) > 0 ){
  1118. $data = Database::store_result($result,'ASSOC');
  1119. return $data;
  1120. } else {
  1121. return false;
  1122. }
  1123. }
  1124. /**
  1125. * Assign a coach to course in session with status = 2
  1126. * @param int - user id
  1127. * @param int - session id
  1128. * @param string - course code
  1129. * @param bool - optional, if is true the user don't be a coach now, otherwise it'll assign a coach
  1130. * @return bool true if there are affected rows, otherwise false
  1131. */
  1132. public static function set_coach_to_course_session($user_id, $session_id = 0, $course_code = '',$nocoach = false) {
  1133. // Definition of variables
  1134. $user_id = intval($user_id);
  1135. if (!empty($session_id)) {
  1136. $session_id = intval($session_id);
  1137. } else {
  1138. $session_id = api_get_session_id();
  1139. }
  1140. if (!empty($course_code)) {
  1141. $course_code = Database::escape_string($course_code);
  1142. } else {
  1143. $course_code = api_get_course_id();
  1144. }
  1145. // definitios of tables
  1146. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  1147. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  1148. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  1149. // check if user is a teacher
  1150. $sql= "SELECT * FROM $tbl_user WHERE status='1' AND user_id = '$user_id'";
  1151. $rs_check_user = Database::query($sql);
  1152. if (Database::num_rows($rs_check_user) > 0) {
  1153. if ($nocoach) {
  1154. // check if user_id exits int session_rel_user
  1155. $sql = "SELECT id_user FROM $tbl_session_rel_user WHERE id_session = '$session_id' AND id_user = '$user_id'";
  1156. $res = Database::query($sql);
  1157. if (Database::num_rows($res) > 0) {
  1158. // The user don't be a coach now
  1159. $sql = "UPDATE $tbl_session_rel_course_rel_user SET status = 0 WHERE id_session = '$session_id' AND course_code = '$course_code' AND id_user = '$user_id' ";
  1160. $rs_update = Database::query($sql);
  1161. if (Database::affected_rows() > 0) return true;
  1162. else return false;
  1163. } else {
  1164. // The user don't be a coach now
  1165. $sql = "DELETE FROM $tbl_session_rel_course_rel_user WHERE id_session = '$session_id' AND course_code = '$course_code' AND id_user = '$user_id' ";
  1166. $rs_delete = Database::query($sql);
  1167. if (Database::affected_rows() > 0) return true;
  1168. else return false;
  1169. }
  1170. } else {
  1171. // Assign user like a coach to course
  1172. // First check if the user is registered in the course
  1173. $sql = "SELECT id_user FROM $tbl_session_rel_course_rel_user WHERE id_session = '$session_id' AND course_code = '$course_code' AND id_user = '$user_id'";
  1174. $rs_check = Database::query($sql);
  1175. //Then update or insert
  1176. if (Database::num_rows($rs_check) > 0) {
  1177. $sql = "UPDATE $tbl_session_rel_course_rel_user SET status = 2 WHERE id_session = '$session_id' AND course_code = '$course_code' AND id_user = '$user_id' ";
  1178. $rs_update = Database::query($sql);
  1179. if (Database::affected_rows() > 0) return true;
  1180. else return false;
  1181. } else {
  1182. $sql = " INSERT INTO $tbl_session_rel_course_rel_user(id_session, course_code, id_user, status) VALUES('$session_id', '$course_code', '$user_id', 2)";
  1183. $rs_insert = Database::query($sql);
  1184. if (Database::affected_rows() > 0) return true;
  1185. else return false;
  1186. }
  1187. }
  1188. } else {
  1189. return false;
  1190. }
  1191. }
  1192. /**
  1193. * Subscribes sessions to human resource manager (Dashboard feature)
  1194. * @param int Human Resource Manager id
  1195. * @param array Sessions id
  1196. * @param int Relation type
  1197. **/
  1198. public static function suscribe_sessions_to_hr_manager($hr_manager_id,$sessions_list) {
  1199. global $_configuration;
  1200. // Database Table Definitions
  1201. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  1202. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  1203. $tbl_session_rel_course_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  1204. $tbl_session_rel_access_url = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  1205. $hr_manager_id = intval($hr_manager_id);
  1206. $affected_rows = 0;
  1207. //Deleting assigned sessions to hrm_id
  1208. if ($_configuration['multiple_access_urls']) {
  1209. $sql = "SELECT id_session FROM $tbl_session_rel_user s INNER JOIN $tbl_session_rel_access_url a ON (a.session_id = s.id_session) WHERE id_user = $hr_manager_id AND relation_type=".SESSION_RELATION_TYPE_RRHH." AND access_url_id = ".api_get_current_access_url_id()."";
  1210. } else {
  1211. $sql = "SELECT id_session FROM $tbl_session_rel_user s WHERE id_user = $hr_manager_id AND relation_type=".SESSION_RELATION_TYPE_RRHH."";
  1212. }
  1213. $result = Database::query($sql);
  1214. if (Database::num_rows($result) > 0) {
  1215. while ($row = Database::fetch_array($result)) {
  1216. $sql = "DELETE FROM $tbl_session_rel_user WHERE id_session = {$row['id_session']} AND id_user = $hr_manager_id AND relation_type=".SESSION_RELATION_TYPE_RRHH." ";
  1217. Database::query($sql);
  1218. }
  1219. }
  1220. /*
  1221. //Deleting assigned courses in sessions to hrm_id
  1222. $sql = "SELECT * FROM $tbl_session_rel_course_user WHERE id_user = $hr_manager_id ";
  1223. $result = Database::query($sql);
  1224. if (Database::num_rows($result) > 0) {
  1225. $sql = "DELETE FROM $tbl_session_rel_course_user WHERE id_user = $hr_manager_id ";
  1226. Database::query($sql);
  1227. }
  1228. */
  1229. // inserting new sessions list
  1230. if (is_array($sessions_list)) {
  1231. foreach ($sessions_list as $session_id) {
  1232. $session_id = intval($session_id);
  1233. $insert_sql = "INSERT IGNORE INTO $tbl_session_rel_user(id_session, id_user, relation_type) VALUES($session_id, $hr_manager_id, '".SESSION_RELATION_TYPE_RRHH."')";
  1234. Database::query($insert_sql);
  1235. $affected_rows = Database::affected_rows();
  1236. }
  1237. }
  1238. return $affected_rows;
  1239. }
  1240. /**
  1241. * Get sessions followed by human resources manager
  1242. * @param int Human resources manager or Session admin id
  1243. * @return array sessions
  1244. */
  1245. public static function get_sessions_followed_by_drh($hr_manager_id) {
  1246. global $_configuration;
  1247. // Database Table Definitions
  1248. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  1249. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  1250. $tbl_session_rel_access_url = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  1251. $hr_manager_id = intval($hr_manager_id);
  1252. $assigned_sessions_to_hrm = array();
  1253. if ($_configuration['multiple_access_urls']) {
  1254. $sql = "SELECT * FROM $tbl_session s INNER JOIN $tbl_session_rel_user sru ON (sru.id_session = s.id) LEFT JOIN $tbl_session_rel_access_url a ON (s.id = a.session_id)
  1255. WHERE sru.id_user = '$hr_manager_id' AND sru.relation_type = '".SESSION_RELATION_TYPE_RRHH."' AND access_url_id = ".api_get_current_access_url_id()."";
  1256. } else {
  1257. $sql = "SELECT * FROM $tbl_session s
  1258. INNER JOIN $tbl_session_rel_user sru ON sru.id_session = s.id AND sru.id_user = '$hr_manager_id' AND sru.relation_type = '".SESSION_RELATION_TYPE_RRHH."' ";
  1259. }
  1260. $rs_assigned_sessions = Database::query($sql);
  1261. if (Database::num_rows($rs_assigned_sessions) > 0) {
  1262. while ($row_assigned_sessions = Database::fetch_array($rs_assigned_sessions)) {
  1263. $assigned_sessions_to_hrm[$row_assigned_sessions['id']] = $row_assigned_sessions;
  1264. }
  1265. }
  1266. return $assigned_sessions_to_hrm;
  1267. }
  1268. /**
  1269. * Gets the list of courses by session filtered by access_url
  1270. * @param int session id
  1271. * @return array list of courses
  1272. */
  1273. public static function get_course_list_by_session_id ($session_id) {
  1274. $tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
  1275. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  1276. // select the courses
  1277. $sql = "SELECT * FROM $tbl_course c INNER JOIN $tbl_session_rel_course src ON c.code = src.course_code
  1278. WHERE src.id_session = '$session_id' ORDER BY title;";
  1279. $result = Database::query($sql);
  1280. $num_rows = Database::num_rows($result);
  1281. $courses = array();
  1282. if ($num_rows > 0) {
  1283. while ($row = Database::fetch_array($result,'ASSOC')) {
  1284. $courses[$row['id']] = $row;
  1285. }
  1286. }
  1287. return $courses;
  1288. }
  1289. /**
  1290. * Get the session id based on the original id and field name in the extra fields. Returns 0 if session was not found
  1291. *
  1292. * @param string Original session id
  1293. * @param string Original field name
  1294. * @return int Session id
  1295. */
  1296. public static function get_session_id_from_original_id($original_session_id_value, $original_session_id_name) {
  1297. $t_sfv = Database::get_main_table(TABLE_MAIN_SESSION_FIELD_VALUES);
  1298. $table_field = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  1299. $sql_session = "SELECT session_id FROM $table_field sf INNER JOIN $t_sfv sfv ON sfv.field_id=sf.id WHERE field_variable='$original_session_id_name' AND field_value='$original_session_id_value'";
  1300. $res_session = Database::query($sql_session);
  1301. $row = Database::fetch_object($res_session);
  1302. if ($row) {
  1303. return $row->session_id;
  1304. } else {
  1305. return 0;
  1306. }
  1307. }
  1308. /**
  1309. * Get users by session
  1310. * @param int sesssion id
  1311. * @param int filter by status
  1312. * @return array a list with an user list
  1313. */
  1314. public static function get_users_by_session($id, $with_status = false) {
  1315. if (empty($id)) {
  1316. return array();
  1317. }
  1318. $id = intval($id);
  1319. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  1320. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  1321. $sql = 'SELECT '.$tbl_user.'.user_id, lastname, firstname, username
  1322. FROM '.$tbl_user.'
  1323. INNER JOIN '.$tbl_session_rel_user.'
  1324. ON '.$tbl_user.'.user_id = '.$tbl_session_rel_user.'.id_user
  1325. AND '.$tbl_session_rel_user.'.id_session = '.$id;
  1326. if ($with_status !== false) {
  1327. $with_status = intval($with_status);
  1328. $sql .= " WHERE relation_type = $with_status ";
  1329. }
  1330. $result = Database::query($sql);
  1331. while ($row = Database::fetch_array($result,'ASSOC')) {
  1332. $return_array[] = $row;
  1333. }
  1334. return $return_array;
  1335. }
  1336. public static function get_sessions_by_coach($user_id) {
  1337. $session_table = Database::get_main_table(TABLE_MAIN_SESSION);
  1338. return Database::select('*', $session_table, array('where'=>array('id_coach = ?'=>$user_id)));
  1339. }
  1340. /*
  1341. public static function get_coaches_by_session($session_id, $course_code) {
  1342. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  1343. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  1344. $sql = "SELECT user.user_id
  1345. FROM $tbl_session_rel_course_rel_user session_rcru, $tbl_user user
  1346. WHERE session_rcru.id_user = user.user_id AND
  1347. session_rcru.id_session = '".intval($session_id)."' AND
  1348. session_rcru.course_code ='".Database::escape_string($course_code)."' AND
  1349. session_rcru.status = 2 ";
  1350. $result = Database::query($sql);
  1351. while ($row = Database::fetch_array($result,'ASSOC')) {
  1352. $return_array[] = $row;
  1353. }
  1354. return $return_array;
  1355. }*/
  1356. /**
  1357. * Gets user status within a session
  1358. * @param $user_id
  1359. * @param $course_code
  1360. * @param $session_id
  1361. * @return unknown_type
  1362. */
  1363. public function get_user_status_in_session($user_id, $course_code, $session_id) {
  1364. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  1365. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  1366. $sql = "SELECT session_rcru.status
  1367. FROM $tbl_session_rel_course_rel_user session_rcru, $tbl_user user
  1368. WHERE session_rcru.id_user = user.user_id AND
  1369. session_rcru.id_session = '".intval($session_id)."' AND
  1370. session_rcru.course_code ='".Database::escape_string($course_code)."' AND
  1371. user.user_id = ".intval($user_id);
  1372. $result = Database::query($sql);
  1373. $status = false;
  1374. if (Database::num_rows($result)) {
  1375. $status = Database::fetch_row($result);
  1376. $status = $status['0'];
  1377. }
  1378. return $status;
  1379. }
  1380. public static function get_session_by_user($coach_id, $user_id) {
  1381. }
  1382. function get_all_sessions_by_promotion($id) {
  1383. $t = Database::get_main_table(TABLE_MAIN_SESSION);
  1384. return Database::select('*', $t, array('where'=>array('promotion_id = ?'=>$id)));
  1385. }
  1386. function suscribe_sessions_to_promotion($promotion_id, $list) {
  1387. $t = Database::get_main_table(TABLE_MAIN_SESSION);
  1388. $params['promotion_id'] = 0;
  1389. Database::update($t, $params, array('promotion_id = ?'=>$promotion_id));
  1390. $params['promotion_id'] = $promotion_id;
  1391. if (!empty($list)) {
  1392. foreach ($list as $session_id) {
  1393. $session_id= intval($session_id);
  1394. Database::update($t, $params, array('id = ?'=>$session_id));
  1395. }
  1396. }
  1397. }
  1398. /**
  1399. * Updates a session status
  1400. * @param int session id
  1401. * @param int status
  1402. */
  1403. public function set_session_status($session_id, $status) {
  1404. $t = Database::get_main_table(TABLE_MAIN_SESSION);
  1405. $params['visibility'] = $status;
  1406. Database::update($t, $params, array('id = ?'=>$session_id));
  1407. }
  1408. /**
  1409. * Copies a session with the same data to a new session.
  1410. * The new copy is not assigned to the same promotion. @see suscribe_sessions_to_promotions() for that
  1411. * @param int Session ID
  1412. * @param bool Whether to copy the relationship with courses
  1413. * @param bool Whether to copy the relationship with users
  1414. * @param bool New courses will be created
  1415. * @return int The new session ID on success, 0 otherwise
  1416. * @todo make sure the extra session fields are copied too
  1417. */
  1418. /**
  1419. * @param $id
  1420. * @param $copy_courses
  1421. * @param $copy_users
  1422. * @param $create_new_courses
  1423. * @param $set_exercises_lp_invisible
  1424. * @return unknown_type
  1425. */
  1426. public function copy_session($id, $copy_courses = true, $copy_users = true, $create_new_courses = false, $set_exercises_lp_invisible = false) {
  1427. $id = intval($id);
  1428. $s = self::fetch($id);
  1429. $s['year_start'] = substr($s['date_start'],0,4);
  1430. $s['month_start'] = substr($s['date_start'],5,2);
  1431. $s['day_start'] = substr($s['date_start'],8,2);
  1432. $s['year_end'] = substr($s['date_end'],0,4);
  1433. $s['month_end'] = substr($s['date_end'],5,2);
  1434. $s['day_end'] = substr($s['date_end'],8,2);
  1435. $consider_start = true;
  1436. if ($s['year_start'].'-'.$s['month_start'].'-'.$s['day_start'] == '0000-00-00') {
  1437. $consider_start = false;
  1438. }
  1439. $consider_end = true;
  1440. if ($s['year_end'].'-'.$s['month_end'].'-'.$s['day_end'] == '0000-00-00') {
  1441. $consider_end = false;
  1442. }
  1443. $sid = self::create_session($s['name'].' '.get_lang('Copy'),
  1444. $s['year_start'], $s['month_start'], $s['day_start'],
  1445. $s['year_end'],$s['month_end'],$s['day_end'],
  1446. $s['nb_days_acess_before_beginning'],$s['nb_days_acess_after_end'],
  1447. false,(int)$s['id_coach'], $s['session_category_id'],
  1448. (int)$s['visibility'],$consider_start, $consider_end, true);
  1449. if (!is_numeric($sid) || empty($sid)) {
  1450. return false;
  1451. }
  1452. if ($copy_courses) {
  1453. // Register courses from the original session to the new session
  1454. $courses = self::get_course_list_by_session_id($id);
  1455. $short_courses = $new_short_courses = array();
  1456. if (is_array($courses) && count($courses)>0) {
  1457. foreach ($courses as $course) {
  1458. $short_courses[] = $course;
  1459. }
  1460. }
  1461. $courses = null;
  1462. //We will copy the current courses of the session to new courses
  1463. if (!empty($short_courses)) {
  1464. if ($create_new_courses) {
  1465. //Just in case
  1466. if (function_exists('ini_set')) {
  1467. ini_set('memory_limit','256M');
  1468. ini_set('max_execution_time',0);
  1469. }
  1470. $params = array();
  1471. $params['skip_lp_dates'] = true;
  1472. foreach ($short_courses as $course_data) {
  1473. $course_info = CourseManager::copy_course_simple($course_data['title'].' '.get_lang('Copy'), $course_data['course_code'], $id, $sid, $params);
  1474. if ($course_info) {
  1475. //By default new elements are invisible
  1476. if ($set_exercises_lp_invisible) {
  1477. require_once api_get_path(SYS_CODE_PATH).'newscorm/learnpathList.class.php';
  1478. $list = new LearnpathList('', $course_info['code'], $sid);
  1479. $flat_list = $list->get_flat_list();
  1480. if (!empty($flat_list)) {
  1481. foreach($flat_list as $lp_id => $data) {
  1482. api_item_property_update($course_info, TOOL_LEARNPATH, $lp_id, 'invisible', api_get_user_id(), 0 ,0, 0, 0, $sid);
  1483. api_item_property_update($course_info, TOOL_LEARNPATH, $lp_id, 'invisible', api_get_user_id(), 0 ,0, 0, 0);
  1484. }
  1485. }
  1486. $quiz_table = Database::get_course_table(TABLE_QUIZ_TEST);
  1487. $course_id = $course_info['real_id'];
  1488. //@todo check this query
  1489. $sql = "UPDATE $quiz_table SET active = 0 WHERE c_id = $course_id ";
  1490. $result=Database::query($sql);
  1491. }
  1492. $new_short_courses[] = $course_info['code'];
  1493. }
  1494. }
  1495. } else {
  1496. foreach($short_courses as $course_data) {
  1497. $new_short_courses[] = $course_data['code'];
  1498. }
  1499. }
  1500. $short_courses = $new_short_courses;
  1501. $res = self::add_courses_to_session($sid, $short_courses, true);
  1502. $short_courses = null;
  1503. }
  1504. }
  1505. if ($copy_users) {
  1506. // Register users from the original session to the new session
  1507. $users = self::get_users_by_session($id);
  1508. $short_users = array();
  1509. if (is_array($users) && count($users)>0) {
  1510. foreach ($users as $user) {
  1511. $short_users[] = $user['user_id'];
  1512. }
  1513. }
  1514. $users = null;
  1515. //Subscribing in read only mode
  1516. $res = self::suscribe_users_to_session($sid, $short_users, SESSION_VISIBLE_READ_ONLY, true, false);
  1517. $short_users = null;
  1518. }
  1519. return $sid;
  1520. }
  1521. function user_is_general_coach($user_id, $session_id) {
  1522. $session_id = intval($session_id);
  1523. $user_id = intval($user_id);
  1524. $session_table = Database::get_main_table(TABLE_MAIN_SESSION);
  1525. $sql = "SELECT DISTINCT id
  1526. FROM $session_table
  1527. WHERE session.id_coach = '".$user_id."' AND id = '$session_id'";
  1528. $result = Database::query($sql);
  1529. if ($result && Database::num_rows($result)) {
  1530. return true;
  1531. }
  1532. return false;
  1533. }
  1534. }