sessionmanager.lib.php 75 KB

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  1. <?php
  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. * This class provides methods for sessions management.
  7. * Include/require it in your code to use its features.
  8. * @package chamilo.library
  9. */
  10. /**
  11. * Code
  12. */
  13. class SessionManager {
  14. private function __construct() {
  15. }
  16. /**
  17. * Fetches a session from the database
  18. * @param int Session ID
  19. * @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)
  20. */
  21. public static function fetch($id) {
  22. $t = Database::get_main_table(TABLE_MAIN_SESSION);
  23. if ($id != strval(intval($id))) { return array(); }
  24. $s = "SELECT * FROM $t WHERE id = $id";
  25. $r = Database::query($s);
  26. if (Database::num_rows($r) != 1) { return array(); }
  27. return Database::fetch_array($r,'ASSOC');
  28. }
  29. /**
  30. * Create a session
  31. * @author Carlos Vargas from existing code
  32. * @param string name
  33. * @param integer Start year (yyyy)
  34. * @param integer Start month (mm)
  35. * @param integer Start day (dd)
  36. * @param integer End year (yyyy)
  37. * @param integer End month (mm)
  38. * @param integer End day (dd)
  39. * @param integer Number of days that the coach can access the session before the start date
  40. * @param integer Number of days that the coach can access the session after the end date
  41. * @param integer If 1, means there are no date limits
  42. * @param mixed If integer, this is the session coach id, if string, the coach ID will be looked for from the user table
  43. * @param integer ID of the session category in which this session is registered
  44. * @param integer Visibility after end date (0 = read-only, 1 = invisible, 2 = accessible)
  45. * @param string Start limit = true if the start date has to be considered
  46. * @param string End limit = true if the end date has to be considered
  47. * @todo use an array to replace all this parameters or use the model.lib.php ...
  48. * @return mixed Session ID on success, error message otherwise
  49. **/
  50. 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) {
  51. global $_configuration;
  52. //Check portal limits
  53. $access_url_id = 1;
  54. if (api_get_multiple_access_url()) {
  55. $access_url_id = api_get_current_access_url_id();
  56. }
  57. if (is_array($_configuration[$access_url_id]) && isset($_configuration[$access_url_id]['hosting_limit_sessions']) && $_configuration[$access_url_id]['hosting_limit_sessions'] > 0) {
  58. $num = self::count_sessions();
  59. if ($num >= $_configuration[$access_url_id]['hosting_limit_sessions']) {
  60. return get_lang('PortalSessionsLimitReached');
  61. }
  62. }
  63. $name = Database::escape_string(trim($sname));
  64. $year_start = intval($syear_start);
  65. $month_start = intval($smonth_start);
  66. $day_start = intval($sday_start);
  67. $year_end = intval($syear_end);
  68. $month_end = intval($smonth_end);
  69. $day_end = intval($sday_end);
  70. $nb_days_acess_before = intval($snb_days_acess_before);
  71. $nb_days_acess_after = intval($snb_days_acess_after);
  72. $id_session_category = intval($id_session_category);
  73. $id_visibility = intval($id_visibility);
  74. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  75. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  76. if (is_int($coach_username)) {
  77. $id_coach = $coach_username;
  78. } else {
  79. $sql = 'SELECT user_id FROM '.$tbl_user.' WHERE username="'.Database::escape_string($coach_username).'"';
  80. $rs = Database::query($sql);
  81. $id_coach = Database::result($rs,0,'user_id');
  82. }
  83. if (empty($nolimit)) {
  84. $date_start ="$year_start-".(($month_start < 10)?"0$month_start":$month_start)."-".(($day_start < 10)?"0$day_start":$day_start);
  85. $date_end ="$year_end-".(($month_end < 10)?"0$month_end":$month_end)."-".(($day_end < 10)?"0$day_end":$day_end);
  86. } else {
  87. $id_visibility = 1; // by default session visibility is read only
  88. $date_start ="0000-00-00";
  89. $date_end ="0000-00-00";
  90. }
  91. if (empty($end_limit)) {
  92. $date_end ="0000-00-00";
  93. $id_visibility = 1; // by default session visibility is read only
  94. }
  95. if (empty($start_limit)) {
  96. $date_start ="0000-00-00";
  97. }
  98. if (empty($name)) {
  99. $msg=get_lang('SessionNameIsRequired');
  100. return $msg;
  101. } elseif (empty($coach_username)) {
  102. $msg=get_lang('CoachIsRequired');
  103. return $msg;
  104. } elseif (!empty($start_limit) && empty($nolimit) && (!$month_start || !$day_start || !$year_start || !checkdate($month_start,$day_start,$year_start))) {
  105. $msg=get_lang('InvalidStartDate');
  106. return $msg;
  107. } elseif (!empty($end_limit) && empty($nolimit) && (!$month_end || !$day_end || !$year_end || !checkdate($month_end,$day_end,$year_end))) {
  108. $msg=get_lang('InvalidEndDate');
  109. return $msg;
  110. } elseif(!empty($start_limit) && !empty($end_limit) && empty($nolimit) && $date_start >= $date_end) {
  111. $msg=get_lang('StartDateShouldBeBeforeEndDate');
  112. return $msg;
  113. } else {
  114. $ready_to_create = false;
  115. if ($fix_name) {
  116. $name = self::generate_nice_next_session_name($name);
  117. if ($name) {
  118. $ready_to_create = true;
  119. } else {
  120. $msg=get_lang('SessionNameAlreadyExists');
  121. return $msg;
  122. }
  123. } else {
  124. $rs = Database::query("SELECT 1 FROM $tbl_session WHERE name='".$name."'");
  125. if (Database::num_rows($rs)) {
  126. $msg=get_lang('SessionNameAlreadyExists');
  127. return $msg;
  128. }
  129. $ready_to_create = true;
  130. }
  131. if ($ready_to_create) {
  132. $sql_insert = "INSERT INTO $tbl_session(name,date_start,date_end,id_coach,session_admin_id, nb_days_access_before_beginning, nb_days_access_after_end, session_category_id,visibility)
  133. VALUES('".$name."','$date_start','$date_end','$id_coach',".api_get_user_id().",".$nb_days_acess_before.", ".$nb_days_acess_after.", ".$id_session_category.", ".$id_visibility.")";
  134. Database::query($sql_insert);
  135. $session_id = Database::insert_id();
  136. if (!empty($session_id)) {
  137. /*
  138. Sends a message to the user_id = 1
  139. $user_info = api_get_user_info(1);
  140. $complete_name = $user_info['firstname'].' '.$user_info['lastname'];
  141. $subject = api_get_setting('siteName').' - '.get_lang('ANewSessionWasCreated');
  142. $message = get_lang('ANewSessionWasCreated')." <br /> ".get_lang('NameOfTheSession').' : '.$name;
  143. api_mail_html($complete_name, $user_info['email'], $subject, $message);
  144. *
  145. */
  146. //Adding to the correct URL
  147. $access_url_id = api_get_current_access_url_id();
  148. UrlManager::add_session_to_url($session_id,$access_url_id);
  149. // add event to system log
  150. $user_id = api_get_user_id();
  151. event_system(LOG_SESSION_CREATE, LOG_SESSION_ID, $session_id, api_get_utc_datetime(), $user_id);
  152. }
  153. return $session_id;
  154. }
  155. }
  156. }
  157. function session_name_exists($session_name) {
  158. $session_name = Database::escape_string($session_name);
  159. $result = Database::fetch_array(Database::query("SELECT COUNT(*) as count FROM ".Database::get_main_table(TABLE_MAIN_SESSION)." WHERE name = '$session_name' "));
  160. return $result['count'] > 0;
  161. }
  162. static function get_count_admin() {
  163. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  164. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  165. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  166. $where = 'WHERE 1=1 ';
  167. $user_id = api_get_user_id();
  168. if (api_is_session_admin() && api_get_setting('allow_session_admins_to_see_all_sessions') == 'false') {
  169. $where.=" WHERE s.session_admin_id = $user_id ";
  170. }
  171. $query_rows = "SELECT count(*) as total_rows
  172. FROM $tbl_session s
  173. LEFT JOIN $tbl_session_category sc ON s.session_category_id = sc.id
  174. INNER JOIN $tbl_user u ON s.id_coach = u.user_id
  175. $where ";
  176. if (api_is_multiple_url_enabled()) {
  177. $table_access_url_rel_session= Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  178. $access_url_id = api_get_current_access_url_id();
  179. if ($access_url_id != -1) {
  180. $where.= " AND ar.access_url_id = $access_url_id ";
  181. $query_rows = "SELECT count(*) as total_rows
  182. FROM $tbl_session s
  183. LEFT JOIN $tbl_session_category sc ON s.session_category_id = sc.id
  184. INNER JOIN $tbl_user u ON s.id_coach = u.user_id
  185. INNER JOIN $table_access_url_rel_session ar ON ar.session_id = s.id
  186. $where ";
  187. }
  188. }
  189. $result_rows = Database::query($query_rows);
  190. $recorset = Database::fetch_array($result_rows);
  191. $num = $recorset['total_rows'];
  192. return $num;
  193. }
  194. /**
  195. * Gets the admin session list callback of the admin/session_list.php page
  196. * @param array $options order and limit keys
  197. * @return array
  198. */
  199. public static function get_sessions_admin($options) {
  200. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  201. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  202. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  203. $where = 'WHERE 1=1 ';
  204. $user_id = api_get_user_id();
  205. if (api_is_session_admin() && api_get_setting('allow_session_admins_to_manage_all_sessions') == 'false') {
  206. $where.=" AND s.session_admin_id = $user_id ";
  207. }
  208. $coach_name = " CONCAT(u.lastname , ' ', u.firstname) as coach_name ";
  209. if (api_is_western_name_order()) {
  210. $coach_name = " CONCAT(u.firstname, ' ', u.lastname) as coach_name ";
  211. }
  212. $today = api_get_utc_datetime();
  213. $today = api_strtotime($today, 'UTC');
  214. $today = date('Y-m-d', $today);
  215. $select = "SELECT * FROM (SELECT
  216. IF (
  217. (s.date_start <= '$today' AND '$today' < s.date_end) OR
  218. (DATEDIFF(s.date_start,'".$today."' ".") <= s.nb_days_access_before_beginning) OR
  219. (s.date_start = '0000-00-00' AND s.date_end = '0000-00-00' ) OR
  220. (s.date_start <= '$today' AND '0000-00-00' = s.date_end) OR
  221. ('$today' < s.date_end AND '0000-00-00' = s.date_start)
  222. , 1, 0)
  223. as session_active,
  224. s.name,
  225. nbr_courses,
  226. nbr_users,
  227. s.date_start,
  228. s.date_end,
  229. $coach_name,
  230. sc.name as category_name,
  231. s.visibility,
  232. u.user_id,
  233. s.id";
  234. $limit = null;
  235. if (!empty($options['limit'])) {
  236. $limit = " LIMIT ".$options['limit'];
  237. }
  238. $query = "$select FROM $tbl_session s
  239. LEFT JOIN $tbl_session_category sc ON s.session_category_id = sc.id
  240. INNER JOIN $tbl_user u ON s.id_coach = u.user_id
  241. $where $limit";
  242. global $_configuration;
  243. if ($_configuration['multiple_access_urls']) {
  244. $table_access_url_rel_session= Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  245. $access_url_id = api_get_current_access_url_id();
  246. if ($access_url_id != -1) {
  247. $where.= " AND ar.access_url_id = $access_url_id ";
  248. $query = " $select
  249. FROM $tbl_session s
  250. LEFT JOIN $tbl_session_category sc ON s.session_category_id = sc.id
  251. INNER JOIN $tbl_user u ON s.id_coach = u.user_id
  252. INNER JOIN $table_access_url_rel_session ar ON ar.session_id = s.id
  253. $where $limit";
  254. }
  255. }
  256. $query .= ") AS session_table";
  257. if (!empty($options['where'])) {
  258. $query .= ' WHERE '.$options['where'];
  259. }
  260. if (!empty($options['order'])) {
  261. $query .= " ORDER BY ".$options['order'];
  262. }
  263. //var_dump($query);
  264. $result = Database::query($query);
  265. $formatted_sessions = array();
  266. if (Database::num_rows($result)) {
  267. $sessions = Database::store_result($result);
  268. foreach ($sessions as $session) {
  269. $session['name'] = Display::url($session['name'], "resume_session.php?id_session=".$session['id']);
  270. $session['coach_name'] = Display::url($session['coach_name'], "user_information.php?user_id=".$session['user_id']);
  271. if ($session['date_start'] == '0000-00-00' && $session['date_end'] == '0000-00-00') {
  272. // $session['session_active'] = 1;
  273. }
  274. if ($session['session_active'] == 1) {
  275. $session['session_active'] = Display::return_icon('accept.png', get_lang('Active'), array(), ICON_SIZE_SMALL);
  276. } else {
  277. $session['session_active'] = Display::return_icon('error.png', get_lang('Inactive'), array(), ICON_SIZE_SMALL);
  278. }
  279. if ($session['date_start'] == '0000-00-00') {
  280. $session['date_start'] = '';
  281. }
  282. if ($session['date_end'] == '0000-00-00') {
  283. $session['date_end'] = '';
  284. }
  285. switch ($session['visibility']) {
  286. case SESSION_VISIBLE_READ_ONLY: //1
  287. $session['visibility'] = get_lang('ReadOnly');
  288. break;
  289. case SESSION_VISIBLE: //2
  290. $session['visibility'] = get_lang('Visible');
  291. break;
  292. case SESSION_INVISIBLE: //3
  293. $session['visibility'] = api_ucfirst(get_lang('Invisible'));
  294. break;
  295. }
  296. $formatted_sessions[] = $session;
  297. }
  298. }
  299. return $formatted_sessions;
  300. }
  301. /**
  302. * Creates a new course code based in given code
  303. *
  304. * @param string wanted code
  305. * <code>
  306. * $wanted_code = 'curse' if there are in the DB codes like curse1 curse2 the function will return: course3
  307. * if the course code doest not exist in the DB the same course code will be returned
  308. * </code>
  309. * @return string wanted unused code
  310. */
  311. function generate_nice_next_session_name($session_name) {
  312. $session_name_ok = !self::session_name_exists($session_name);
  313. if (!$session_name_ok) {
  314. $table = Database::get_main_table(TABLE_MAIN_SESSION);
  315. $session_name = Database::escape_string($session_name);
  316. $sql = "SELECT count(*) as count FROM $table WHERE name LIKE '$session_name%'";
  317. $result = Database::query($sql);
  318. if (Database::num_rows($result) > 0 ) {
  319. $row = Database::fetch_array($result);
  320. $count = $row['count'] + 1;
  321. $session_name = $session_name.'_'.$count;
  322. $result = self::session_name_exists($session_name);
  323. if (!$result) {
  324. return $session_name;
  325. }
  326. }
  327. return false;
  328. }
  329. return $session_name;
  330. }
  331. /**
  332. * Edit a session
  333. * @author Carlos Vargas from existing code
  334. * @param integer id
  335. * @param string name
  336. * @param integer year_start
  337. * @param integer month_start
  338. * @param integer day_start
  339. * @param integer year_end
  340. * @param integer month_end
  341. * @param integer day_end
  342. * @param integer nb_days_acess_before
  343. * @param integer nb_days_acess_after
  344. * @param integer nolimit
  345. * @param integer id_coach
  346. * @param integer id_session_category
  347. * @return $id;
  348. * The parameter id is a primary key
  349. **/
  350. public static function edit_session ($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) {
  351. global $_user;
  352. $name=trim(stripslashes($name));
  353. $year_start=intval($year_start);
  354. $month_start=intval($month_start);
  355. $day_start=intval($day_start);
  356. $year_end=intval($year_end);
  357. $month_end=intval($month_end);
  358. $day_end=intval($day_end);
  359. $id_coach= intval($id_coach);
  360. $nb_days_acess_before= intval($nb_days_acess_before);
  361. $nb_days_acess_after = intval($nb_days_acess_after);
  362. $id_session_category = intval($id_session_category);
  363. $id_visibility = intval($id_visibility);
  364. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  365. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  366. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  367. if (empty($nolimit)) {
  368. $date_start = "$year_start-".(($month_start < 10)?"0$month_start":$month_start)."-".(($day_start < 10)?"0$day_start":$day_start);
  369. $date_end = "$year_end-".(($month_end < 10)?"0$month_end":$month_end)."-".(($day_end < 10)?"0$day_end":$day_end);
  370. } else {
  371. $date_start = "0000-00-00";
  372. $date_end = "0000-00-00";
  373. $id_visibility = 1;//force read only
  374. }
  375. if (!empty($no_end_limit)) {
  376. $date_end = "0000-00-00";
  377. }
  378. if (empty($end_limit)) {
  379. $date_end ="0000-00-00";
  380. $id_visibility = 1;//force read only
  381. }
  382. if (empty($start_limit)) {
  383. $date_start ="0000-00-00";
  384. }
  385. if (empty($name)) {
  386. $msg=get_lang('SessionNameIsRequired');
  387. return $msg;
  388. } elseif (empty($id_coach)) {
  389. $msg=get_lang('CoachIsRequired');
  390. return $msg;
  391. } elseif (!empty($start_limit) && empty($nolimit) && (!$month_start || !$day_start || !$year_start || !checkdate($month_start,$day_start,$year_start))) {
  392. $msg=get_lang('InvalidStartDate');
  393. return $msg;
  394. } elseif (!empty($end_limit) && empty($nolimit) && (!$month_end || !$day_end || !$year_end || !checkdate($month_end,$day_end,$year_end))) {
  395. $msg=get_lang('InvalidEndDate');
  396. return $msg;
  397. } elseif (!empty($start_limit) && !empty($end_limit) && empty($nolimit) && $date_start >= $date_end) {
  398. $msg=get_lang('StartDateShouldBeBeforeEndDate');
  399. return $msg;
  400. } else {
  401. $rs = Database::query("SELECT id FROM $tbl_session WHERE name='".Database::escape_string($name)."'");
  402. $exists = false;
  403. while ($row = Database::fetch_array($rs)) {
  404. if($row['id']!=$id)
  405. $exists = true;
  406. }
  407. if ($exists) {
  408. $msg=get_lang('SessionNameAlreadyExists');
  409. return $msg;
  410. } else {
  411. $sql="UPDATE $tbl_session " .
  412. "SET name='".Database::escape_string($name)."',
  413. date_start='".$date_start."',
  414. date_end='".$date_end."',
  415. id_coach='".$id_coach."',
  416. nb_days_access_before_beginning = ".$nb_days_acess_before.",
  417. nb_days_access_after_end = ".$nb_days_acess_after.",
  418. session_category_id = ".$id_session_category." ,
  419. visibility= ".$id_visibility."
  420. WHERE id='$id'";
  421. Database::query($sql);
  422. return $id;
  423. }
  424. }
  425. }
  426. /**
  427. * Delete session
  428. * @author Carlos Vargas from existing code
  429. * @param array id_checked
  430. * @param boolean optional, true if the function is called by a webservice, false otherwise.
  431. * @return void Nothing, or false on error
  432. * The parameters is a array to delete sessions
  433. **/
  434. public static function delete_session($id_checked,$from_ws = false) {
  435. $tbl_session= Database::get_main_table(TABLE_MAIN_SESSION);
  436. $tbl_session_rel_course= Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  437. $tbl_session_rel_course_rel_user= Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  438. $tbl_session_rel_user= Database::get_main_table(TABLE_MAIN_SESSION_USER);
  439. $tbl_url_session = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  440. global $_user;
  441. if(is_array($id_checked)) {
  442. $id_checked = Database::escape_string(implode(',',$id_checked));
  443. } else {
  444. $id_checked = intval($id_checked);
  445. }
  446. if (!api_is_platform_admin() && !$from_ws) {
  447. $sql = 'SELECT session_admin_id FROM '.Database :: get_main_table(TABLE_MAIN_SESSION).' WHERE id='.$id_checked;
  448. $rs = Database::query($sql);
  449. if (Database::result($rs,0,0)!=$_user['user_id']) {
  450. api_not_allowed(true);
  451. }
  452. }
  453. Database::query("DELETE FROM $tbl_session WHERE id IN($id_checked)");
  454. Database::query("DELETE FROM $tbl_session_rel_course WHERE id_session IN($id_checked)");
  455. Database::query("DELETE FROM $tbl_session_rel_course_rel_user WHERE id_session IN($id_checked)");
  456. Database::query("DELETE FROM $tbl_session_rel_user WHERE id_session IN($id_checked)");
  457. Database::query("DELETE FROM $tbl_url_session WHERE session_id IN($id_checked)");
  458. // delete extra session fields
  459. $t_sf = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  460. $t_sfv = Database::get_main_table(TABLE_MAIN_SESSION_FIELD_VALUES);
  461. // Delete extra fields from session where field variable is "SECCION"
  462. $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' ";
  463. $rs_field = Database::query($sql);
  464. $field_id = 0;
  465. if (Database::num_rows($rs_field) == 1) {
  466. $row_field = Database::fetch_row($rs_field);
  467. $field_id = $row_field[0];
  468. $sql_delete_sfv = "DELETE FROM $t_sfv WHERE session_id = '$id_checked' AND field_id = '$field_id'";
  469. $rs_delete_sfv = Database::query($sql_delete_sfv);
  470. }
  471. $sql = "SELECT * FROM $t_sfv WHERE field_id = '$field_id' ";
  472. $rs_field_id = Database::query($sql);
  473. if (Database::num_rows($rs_field_id) == 0) {
  474. $sql_delete_sf = "DELETE FROM $t_sf WHERE id = '$field_id'";
  475. $rs_delete_sf = Database::query($sql_delete_sf);
  476. }
  477. /*
  478. $sql = "SELECT distinct field_id FROM $t_sfv WHERE session_id = '$id_checked'";
  479. $res_field_ids = @Database::query($sql);
  480. if (Database::num_rows($res_field_ids) > 0) {
  481. while($row_field_id = Database::fetch_row($res_field_ids)){
  482. $field_ids[] = $row_field_id[0];
  483. }
  484. }
  485. //delete from table_session_field_value from a given session id
  486. $sql_session_field_value = "DELETE FROM $t_sfv WHERE session_id = '$id_checked'";
  487. @Database::query($sql_session_field_value);
  488. $sql = "SELECT distinct field_id FROM $t_sfv";
  489. $res_field_all_ids = @Database::query($sql);
  490. if (Database::num_rows($res_field_all_ids) > 0) {
  491. while($row_field_all_id = Database::fetch_row($res_field_all_ids)){
  492. $field_all_ids[] = $row_field_all_id[0];
  493. }
  494. }
  495. if (count($field_ids) > 0 && count($field_all_ids) > 0) {
  496. foreach($field_ids as $field_id) {
  497. // check if field id is used into table field value
  498. if (in_array($field_id,$field_all_ids)) {
  499. continue;
  500. } else {
  501. $sql_session_field = "DELETE FROM $t_sf WHERE id = '$field_id'";
  502. Database::query($sql_session_field);
  503. }
  504. }
  505. }
  506. */
  507. // Add event to system log
  508. $user_id = api_get_user_id();
  509. event_system(LOG_SESSION_DELETE, LOG_SESSION_ID, $id_checked, api_get_utc_datetime(), $user_id);
  510. }
  511. /**
  512. * Subscribes users (students) to the given session and optionally (default) unsubscribes previous users
  513. * @author Carlos Vargas from existing code
  514. * @param integer Session ID
  515. * @param array List of user IDs
  516. * @param bool Whether to unsubscribe existing users (true, default) or not (false)
  517. * @return void Nothing, or false on error
  518. **/
  519. public static function suscribe_users_to_session($id_session, $user_list, $session_visibility = SESSION_VISIBLE_READ_ONLY, $empty_users = true, $send_email = false) {
  520. if ($id_session!= strval(intval($id_session))) return false;
  521. foreach($user_list as $intUser){
  522. if ($intUser!= strval(intval($intUser))) return false;
  523. }
  524. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  525. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  526. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  527. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  528. $session_info = api_get_session_info($id_session);
  529. $session_name = $session_info['name'];
  530. //from function parameter
  531. if (empty($session_visibility)) {
  532. $session_visibility = $session_info['visibility']; //loaded from DB
  533. //default status loaded if empty
  534. if (empty($session_visibility))
  535. $session_visibility = SESSION_VISIBLE_READ_ONLY; // by default readonly 1
  536. } else {
  537. if (!in_array($session_visibility, array(SESSION_VISIBLE_READ_ONLY, SESSION_VISIBLE, SESSION_INVISIBLE))) {
  538. $session_visibility = SESSION_VISIBLE_READ_ONLY;
  539. }
  540. }
  541. $sql = "SELECT id_user FROM $tbl_session_rel_course_rel_user WHERE id_session = '$id_session' AND status = 0";
  542. $result = Database::query($sql);
  543. $existingUsers = array();
  544. while ($row = Database::fetch_array($result)) {
  545. $existingUsers[] = $row['id_user'];
  546. }
  547. $sql = "SELECT course_code FROM $tbl_session_rel_course WHERE id_session = '$id_session'";
  548. $result = Database::query($sql);
  549. $course_list = array();
  550. while ($row = Database::fetch_array($result)) {
  551. $course_list[] = $row['course_code'];
  552. }
  553. if ($send_email) {
  554. //sending emails only
  555. if (is_array($user_list) && count($user_list)>0) {
  556. foreach ($user_list as $user_id) {
  557. if (!in_array($user_id, $existingUsers)) {
  558. $subject = '['.get_setting('siteName').'] '.get_lang('YourReg').' '.get_setting('siteName');
  559. $user_info = api_get_user_info($user_id);
  560. $content = get_lang('Dear')." ".stripslashes($user_info['complete_name']).",\n\n".sprintf(get_lang('YouAreRegisterToSessionX'), $session_name) ." \n\n" .get_lang('Address') ." ". get_setting('siteName') ." ". get_lang('Is') ." : ". api_get_path(WEB_PATH) ."\n\n". get_lang('Problem'). "\n\n". get_lang('Formula').",\n\n".get_setting('administratorName')." ".get_setting('administratorSurname')."\n". get_lang('Manager'). " ".get_setting('siteName')."\nT. ".get_setting('administratorTelephone')."\n" .get_lang('Email') ." : ".get_setting('emailAdministrator');
  561. MessageManager::send_message($user_id, $subject, $content, array(), array(), null, null, null, null, null);
  562. }
  563. }
  564. }
  565. }
  566. foreach ($course_list as $enreg_course) {
  567. // for each course in the session
  568. $nbr_users = 0;
  569. $enreg_course = Database::escape_string($enreg_course);
  570. // delete existing users
  571. if ($empty_users) {
  572. foreach ($existingUsers as $existing_user) {
  573. if (!in_array($existing_user, $user_list)) {
  574. $sql = "DELETE FROM $tbl_session_rel_course_rel_user WHERE id_session='$id_session' AND course_code='$enreg_course' AND id_user='$existing_user' AND status = 0";
  575. Database::query($sql);
  576. if (Database::affected_rows()) {
  577. $nbr_users--;
  578. }
  579. }
  580. }
  581. }
  582. //Replace with this new function
  583. //
  584. // insert new users into session_rel_course_rel_user and ignore if they already exist
  585. foreach ($user_list as $enreg_user) {
  586. if(!in_array($enreg_user, $existingUsers)) {
  587. $enreg_user = Database::escape_string($enreg_user);
  588. $insert_sql = "INSERT IGNORE INTO $tbl_session_rel_course_rel_user(id_session, course_code, id_user, visibility, status) VALUES('$id_session','$enreg_course','$enreg_user','$session_visibility', '0')";
  589. Database::query($insert_sql);
  590. if(Database::affected_rows()) {
  591. $nbr_users++;
  592. }
  593. }
  594. }
  595. // count users in this session-course relation
  596. $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";
  597. $rs = Database::query($sql);
  598. list($nbr_users) = Database::fetch_array($rs);
  599. // update the session-course relation to add the users total
  600. $update_sql = "UPDATE $tbl_session_rel_course SET nbr_users=$nbr_users WHERE id_session='$id_session' AND course_code='$enreg_course'";
  601. Database::query($update_sql);
  602. }
  603. // Delete users from the session
  604. if ($empty_users===true) {
  605. Database::query("DELETE FROM $tbl_session_rel_user WHERE id_session = $id_session AND relation_type<>".SESSION_RELATION_TYPE_RRHH."");
  606. }
  607. // Insert missing users into session
  608. $nbr_users = 0;
  609. foreach ($user_list as $enreg_user) {
  610. $enreg_user = Database::escape_string($enreg_user);
  611. $nbr_users++;
  612. $insert_sql = "INSERT IGNORE INTO $tbl_session_rel_user (id_session, id_user) VALUES ('$id_session','$enreg_user')";
  613. Database::query($insert_sql);
  614. }
  615. // update number of users in the session
  616. $nbr_users = count($user_list);
  617. if ($empty_users) {
  618. // update number of users in the session
  619. $update_sql = "UPDATE $tbl_session SET nbr_users= $nbr_users WHERE id='$id_session' ";
  620. Database::query($update_sql);
  621. } else {
  622. $update_sql = "UPDATE $tbl_session SET nbr_users= nbr_users + $nbr_users WHERE id='$id_session' ";
  623. Database::query($update_sql);
  624. }
  625. }
  626. function subscribe_users_to_session_course($user_list, $session_id, $course_code, $session_visibility = SESSION_VISIBLE_READ_ONLY ) {
  627. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  628. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  629. if (empty($user_list) || empty($session_id) || empty($course_code)) {
  630. return false;
  631. }
  632. $session_id = intval($session_id);
  633. $course_code = Database::escape_string($course_code);
  634. $session_visibility = intval($session_visibility);
  635. $nbr_users = 0;
  636. foreach ($user_list as $enreg_user) {
  637. //if (!in_array($enreg_user, $existingUsers)) {
  638. $enreg_user = intval($enreg_user);
  639. $insert_sql = "INSERT IGNORE INTO $tbl_session_rel_course_rel_user(id_session,course_code,id_user,visibility)
  640. VALUES ('$session_id','$course_code','$enreg_user','$session_visibility')";
  641. Database::query($insert_sql);
  642. if (Database::affected_rows()) {
  643. $nbr_users++;
  644. }
  645. //}
  646. }
  647. // count users in this session-course relation
  648. $sql = "SELECT COUNT(id_user) as nbUsers FROM $tbl_session_rel_course_rel_user WHERE id_session='$session_id' AND course_code='$course_code' AND status<>2";
  649. $rs = Database::query($sql);
  650. list($nbr_users) = Database::fetch_array($rs);
  651. // update the session-course relation to add the users total
  652. $update_sql = "UPDATE $tbl_session_rel_course SET nbr_users=$nbr_users WHERE id_session='$session_id' AND course_code='$course_code'";
  653. Database::query($update_sql);
  654. }
  655. /**
  656. * Unsubscribe user from session
  657. *
  658. * @param int Session id
  659. * @param int User id
  660. * @return bool True in case of success, false in case of error
  661. */
  662. public static function unsubscribe_user_from_session($session_id, $user_id) {
  663. $session_id = (int)$session_id;
  664. $user_id = (int)$user_id;
  665. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  666. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  667. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  668. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  669. $delete_sql = "DELETE FROM $tbl_session_rel_user WHERE id_session = '$session_id' AND id_user ='$user_id' AND relation_type<>".SESSION_RELATION_TYPE_RRHH."";
  670. Database::query($delete_sql);
  671. $return = Database::affected_rows();
  672. // Update number of users
  673. $update_sql = "UPDATE $tbl_session SET nbr_users= nbr_users - $return WHERE id='$session_id' ";
  674. Database::query($update_sql);
  675. // Get the list of courses related to this session
  676. $course_list = SessionManager::get_course_list_by_session_id($session_id);
  677. if(!empty($course_list)) {
  678. foreach($course_list as $course) {
  679. $course_code = $course['code'];
  680. // Delete user from course
  681. 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'");
  682. if(Database::affected_rows()) {
  683. // Update number of users in this relation
  684. Database::query("UPDATE $tbl_session_rel_course SET nbr_users=nbr_users - 1 WHERE id_session='$session_id' AND course_code='$course_code'");
  685. }
  686. }
  687. }
  688. return true;
  689. }
  690. /** Subscribes courses to the given session and optionally (default) unsubscribes previous users
  691. * @author Carlos Vargas from existing code
  692. * @param int Session ID
  693. * @param array List of courses IDs
  694. * @param bool Whether to unsubscribe existing users (true, default) or not (false)
  695. * @return void Nothing, or false on error
  696. **/
  697. public static function add_courses_to_session ($id_session, $course_list, $empty_courses=true) {
  698. // security checks
  699. if ($id_session!= strval(intval($id_session))) { return false; }
  700. //foreach($course_list as $intCourse){
  701. // if ($intCourse!= strval(intval($intCourse))) { return false; }
  702. //}
  703. // initialisation
  704. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  705. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  706. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  707. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  708. $tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
  709. // get general coach ID
  710. $id_coach = Database::query("SELECT id_coach FROM $tbl_session WHERE id=$id_session");
  711. $id_coach = Database::fetch_array($id_coach);
  712. $id_coach = $id_coach[0];
  713. // get list of courses subscribed to this session
  714. $rs = Database::query("SELECT course_code FROM $tbl_session_rel_course WHERE id_session=$id_session");
  715. $existingCourses = Database::store_result($rs);
  716. $nbr_courses=count($existingCourses);
  717. // get list of users subscribed to this session
  718. $sql="SELECT id_user
  719. FROM $tbl_session_rel_user
  720. WHERE id_session = $id_session AND relation_type<>".SESSION_RELATION_TYPE_RRHH."";
  721. $result=Database::query($sql);
  722. $user_list=Database::store_result($result);
  723. // remove existing courses from the session
  724. if ($empty_courses===true) {
  725. foreach ($existingCourses as $existingCourse) {
  726. if (!in_array($existingCourse['course_code'], $course_list)){
  727. Database::query("DELETE FROM $tbl_session_rel_course WHERE course_code='".$existingCourse['course_code']."' AND id_session=$id_session");
  728. Database::query("DELETE FROM $tbl_session_rel_course_rel_user WHERE course_code='".$existingCourse['course_code']."' AND id_session=$id_session");
  729. }
  730. }
  731. $nbr_courses=0;
  732. }
  733. // Pass through the courses list we want to add to the session
  734. foreach ($course_list as $enreg_course) {
  735. $enreg_course = Database::escape_string($enreg_course);
  736. $exists = false;
  737. // check if the course we want to add is already subscribed
  738. foreach ($existingCourses as $existingCourse) {
  739. if ($enreg_course == $existingCourse['course_code']) {
  740. $exists=true;
  741. }
  742. }
  743. if (!$exists) {
  744. //if the course isn't subscribed yet
  745. $sql_insert_rel_course= "INSERT INTO $tbl_session_rel_course (id_session,course_code) VALUES ('$id_session','$enreg_course')";
  746. Database::query($sql_insert_rel_course);
  747. //We add the current course in the existing courses array, to avoid adding another time the current course
  748. $existingCourses[]=array('course_code'=>$enreg_course);
  749. $nbr_courses++;
  750. // subscribe all the users from the session to this course inside the session
  751. $nbr_users=0;
  752. foreach ($user_list as $enreg_user) {
  753. $enreg_user_id = Database::escape_string($enreg_user['id_user']);
  754. $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')";
  755. Database::query($sql_insert);
  756. if (Database::affected_rows()) {
  757. $nbr_users++;
  758. }
  759. }
  760. Database::query("UPDATE $tbl_session_rel_course SET nbr_users=$nbr_users WHERE id_session='$id_session' AND course_code='$enreg_course'");
  761. }
  762. }
  763. Database::query("UPDATE $tbl_session SET nbr_courses=$nbr_courses WHERE id='$id_session'");
  764. }
  765. /**
  766. * Unsubscribe course from a session
  767. *
  768. * @param int Session id
  769. * @param int Course id
  770. * @return bool True in case of success, false otherwise
  771. */
  772. public static function unsubscribe_course_from_session($session_id, $course_id) {
  773. $session_id = (int)$session_id;
  774. $course_id = (int)$course_id;
  775. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  776. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  777. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  778. // Get course code
  779. $course_code = CourseManager::get_course_code_from_course_id($course_id);
  780. if($course_code == 0) {
  781. return false;
  782. }
  783. // Unsubscribe course
  784. Database::query("DELETE FROM $tbl_session_rel_course WHERE course_code='$course_code' AND id_session='$session_id'");
  785. $nb_affected = Database::affected_rows();
  786. Database::query("DELETE FROM $tbl_session_rel_course_rel_user WHERE course_code='$course_code' AND id_session='$session_id'");
  787. if($nb_affected > 0) {
  788. // Update number of courses in the session
  789. Database::query("UPDATE $tbl_session SET nbr_courses= nbr_courses + $nb_affected WHERE id='$session_id' ");
  790. return true;
  791. } else {
  792. return false;
  793. }
  794. }
  795. /**
  796. * Creates a new extra field for a given session
  797. * @param string Field's internal variable name
  798. * @param int Field's type
  799. * @param string Field's language var name
  800. * @return int new extra field id
  801. */
  802. public static function create_session_extra_field ($fieldvarname, $fieldtype, $fieldtitle) {
  803. // database table definition
  804. $t_sf = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  805. $fieldvarname = Database::escape_string($fieldvarname);
  806. $fieldtitle = Database::escape_string($fieldtitle);
  807. $fieldtype = (int)$fieldtype;
  808. $time = time();
  809. $sql_field = "SELECT id FROM $t_sf WHERE field_variable = '$fieldvarname'";
  810. $res_field = Database::query($sql_field);
  811. $r_field = Database::fetch_row($res_field);
  812. if (Database::num_rows($res_field)>0) {
  813. $field_id = $r_field[0];
  814. } else {
  815. // save new fieldlabel into course_field table
  816. $sql = "SELECT MAX(field_order) FROM $t_sf";
  817. $res = Database::query($sql);
  818. $order = 0;
  819. if (Database::num_rows($res)>0) {
  820. $row = Database::fetch_row($res);
  821. $order = $row[0]+1;
  822. }
  823. $sql = "INSERT INTO $t_sf
  824. SET field_type = '$fieldtype',
  825. field_variable = '$fieldvarname',
  826. field_display_text = '$fieldtitle',
  827. field_order = '$order',
  828. tms = FROM_UNIXTIME($time)";
  829. $result = Database::query($sql);
  830. $field_id=Database::insert_id();
  831. }
  832. return $field_id;
  833. }
  834. /**
  835. * Update an extra field value for a given session
  836. * @param integer Course ID
  837. * @param string Field variable name
  838. * @param string Field value
  839. * @return boolean true if field updated, false otherwise
  840. */
  841. public static function update_session_extra_field_value ($session_id,$fname,$fvalue='') {
  842. $t_sf = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  843. $t_sfv = Database::get_main_table(TABLE_MAIN_SESSION_FIELD_VALUES);
  844. $fname = Database::escape_string($fname);
  845. $session_id = (int)$session_id;
  846. $fvalues = '';
  847. if(is_array($fvalue)) {
  848. foreach($fvalue as $val) {
  849. $fvalues .= Database::escape_string($val).';';
  850. }
  851. if(!empty($fvalues)) {
  852. $fvalues = substr($fvalues,0,-1);
  853. }
  854. }
  855. else
  856. {
  857. $fvalues = Database::escape_string($fvalue);
  858. }
  859. $sqlsf = "SELECT * FROM $t_sf WHERE field_variable='$fname'";
  860. $ressf = Database::query($sqlsf);
  861. if(Database::num_rows($ressf)==1)
  862. { //ok, the field exists
  863. // Check if enumerated field, if the option is available
  864. $rowsf = Database::fetch_array($ressf);
  865. $tms = time();
  866. $sqlsfv = "SELECT * FROM $t_sfv WHERE session_id = '$session_id' AND field_id = '".$rowsf['id']."' ORDER BY id";
  867. $ressfv = Database::query($sqlsfv);
  868. $n = Database::num_rows($ressfv);
  869. if ($n>1) {
  870. //problem, we already have to values for this field and user combination - keep last one
  871. while($rowsfv = Database::fetch_array($ressfv))
  872. {
  873. if($n > 1)
  874. {
  875. $sqld = "DELETE FROM $t_sfv WHERE id = ".$rowsfv['id'];
  876. $resd = Database::query($sqld);
  877. $n--;
  878. }
  879. $rowsfv = Database::fetch_array($ressfv);
  880. if($rowsfv['field_value'] != $fvalues)
  881. {
  882. $sqlu = "UPDATE $t_sfv SET field_value = '$fvalues', tms = FROM_UNIXTIME($tms) WHERE id = ".$rowsfv['id'];
  883. $resu = Database::query($sqlu);
  884. return($resu?true:false);
  885. }
  886. return true;
  887. }
  888. } else if ($n==1) {
  889. //we need to update the current record
  890. $rowsfv = Database::fetch_array($ressfv);
  891. if($rowsfv['field_value'] != $fvalues)
  892. {
  893. $sqlu = "UPDATE $t_sfv SET field_value = '$fvalues', tms = FROM_UNIXTIME($tms) WHERE id = ".$rowsfv['id'];
  894. //error_log('UM::update_extra_field_value: '.$sqlu);
  895. $resu = Database::query($sqlu);
  896. return($resu?true:false);
  897. }
  898. return true;
  899. } else {
  900. $sqli = "INSERT INTO $t_sfv (session_id,field_id,field_value,tms) " .
  901. "VALUES ('$session_id',".$rowsf['id'].",'$fvalues',FROM_UNIXTIME($tms))";
  902. //error_log('UM::update_extra_field_value: '.$sqli);
  903. $resi = Database::query($sqli);
  904. return($resi?true:false);
  905. }
  906. } else {
  907. return false; //field not found
  908. }
  909. }
  910. /**
  911. * Checks the relationship between a session and a course.
  912. * @param int $session_id
  913. * @param int $course_id
  914. * @return bool Returns TRUE if the session and the course are related, FALSE otherwise.
  915. * */
  916. public static function relation_session_course_exist ($session_id, $course_id) {
  917. $tbl_session_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  918. $return_value = false;
  919. $sql= "SELECT course_code FROM $tbl_session_course WHERE id_session = ".Database::escape_string($session_id)." AND course_code = '".Database::escape_string($course_id)."'";
  920. $result = Database::query($sql);
  921. $num = Database::num_rows($result);
  922. if ($num>0) {
  923. $return_value = true;
  924. }
  925. return $return_value;
  926. }
  927. /**
  928. * Get the session information by name
  929. * @param string session name
  930. * @return mixed false if the session does not exist, array if the session exist
  931. * */
  932. public static function get_session_by_name ($session_name) {
  933. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  934. $sql = 'SELECT id, id_coach, date_start, date_end FROM '.$tbl_session.' WHERE name="'.Database::escape_string($session_name).'"';
  935. $result = Database::query($sql);
  936. $num = Database::num_rows($result);
  937. if ($num>0){
  938. return Database::fetch_array($result);
  939. } else {
  940. return false;
  941. }
  942. }
  943. /**
  944. * Create a session category
  945. * @author Jhon Hinojosa <jhon.hinojosa@dokeos.com>, from existing code
  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 $id_session;
  954. **/
  955. public static function create_category_session($sname,$syear_start,$smonth_start,$sday_start,$syear_end,$smonth_end, $sday_end){
  956. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  957. $name= trim($sname);
  958. $year_start= intval($syear_start);
  959. $month_start=intval($smonth_start);
  960. $day_start=intval($sday_start);
  961. $year_end=intval($syear_end);
  962. $month_end=intval($smonth_end);
  963. $day_end=intval($sday_end);
  964. $date_start = "$year_start-".(($month_start < 10)?"0$month_start":$month_start)."-".(($day_start < 10)?"0$day_start":$day_start);
  965. $date_end = "$year_end-".(($month_end < 10)?"0$month_end":$month_end)."-".(($day_end < 10)?"0$day_end":$day_end);
  966. if (empty($name)) {
  967. $msg=get_lang('SessionCategoryNameIsRequired');
  968. return $msg;
  969. } elseif (!$month_start || !$day_start || !$year_start || !checkdate($month_start,$day_start,$year_start)) {
  970. $msg=get_lang('InvalidStartDate');
  971. return $msg;
  972. } elseif (!$month_end && !$day_end && !$year_end) {
  973. $date_end = "null";
  974. } elseif (!$month_end || !$day_end || !$year_end || !checkdate($month_end,$day_end,$year_end)) {
  975. $msg=get_lang('InvalidEndDate');
  976. return $msg;
  977. } elseif($date_start >= $date_end) {
  978. $msg=get_lang('StartDateShouldBeBeforeEndDate');
  979. return $msg;
  980. }
  981. $access_url_id = api_get_current_access_url_id();
  982. $sql = "INSERT INTO $tbl_session_category (name, date_start, date_end, access_url_id)
  983. VALUES('".Database::escape_string($name)."','$date_start','$date_end', '$access_url_id')";
  984. Database::query($sql);
  985. $id_session = Database::insert_id();
  986. // Add event to system log
  987. $user_id = api_get_user_id();
  988. event_system(LOG_SESSION_CATEGORY_CREATE, LOG_SESSION_CATEGORY_ID, $id_session, api_get_utc_datetime(), $user_id);
  989. return $id_session;
  990. }
  991. /**
  992. * Edit a sessions categories
  993. * @author Jhon Hinojosa <jhon.hinojosa@dokeos.com>,from existing code
  994. * @param integer id
  995. * @param string name
  996. * @param integer year_start
  997. * @param integer month_start
  998. * @param integer day_start
  999. * @param integer year_end
  1000. * @param integer month_end
  1001. * @param integer day_end
  1002. * @return $id;
  1003. * The parameter id is a primary key
  1004. **/
  1005. public static function edit_category_session($id, $sname,$syear_start,$smonth_start,$sday_start,$syear_end,$smonth_end, $sday_end){
  1006. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  1007. $name= trim($sname);
  1008. $year_start= intval($syear_start);
  1009. $month_start=intval($smonth_start);
  1010. $day_start=intval($sday_start);
  1011. $year_end=intval($syear_end);
  1012. $month_end=intval($smonth_end);
  1013. $day_end=intval($sday_end);
  1014. $id=intval($id);
  1015. $date_start = "$year_start-".(($month_start < 10)?"0$month_start":$month_start)."-".(($day_start < 10)?"0$day_start":$day_start);
  1016. $date_end = "$year_end-".(($month_end < 10)?"0$month_end":$month_end)."-".(($day_end < 10)?"0$day_end":$day_end);
  1017. if (empty($name)) {
  1018. $msg=get_lang('SessionCategoryNameIsRequired');
  1019. return $msg;
  1020. } elseif (!$month_start || !$day_start || !$year_start || !checkdate($month_start,$day_start,$year_start)) {
  1021. $msg=get_lang('InvalidStartDate');
  1022. return $msg;
  1023. } elseif (!$month_end && !$day_end && !$year_end) {
  1024. $date_end = null;
  1025. } elseif (!$month_end || !$day_end || !$year_end || !checkdate($month_end,$day_end,$year_end)) {
  1026. $msg=get_lang('InvalidEndDate');
  1027. return $msg;
  1028. } elseif($date_start >= $date_end) {
  1029. $msg=get_lang('StartDateShouldBeBeforeEndDate');
  1030. return $msg;
  1031. }
  1032. if ( $date_end <> null ) {
  1033. $sql = "UPDATE $tbl_session_category SET name = '".Database::escape_string($name)."', date_start = '$date_start' ".
  1034. ", date_end = '$date_end' WHERE id= '".$id."' ";
  1035. } else {
  1036. $sql = "UPDATE $tbl_session_category SET name = '".Database::escape_string($name)."', date_start = '$date_start' ".
  1037. ", date_end = NULL WHERE id= '".$id."' ";
  1038. }
  1039. $result = Database::query($sql);
  1040. return ($result? true:false);
  1041. }
  1042. /**
  1043. * Delete sessions categories
  1044. * @author Jhon Hinojosa <jhon.hinojosa@dokeos.com>, from existing code
  1045. * @param array id_checked
  1046. * @param bool include delete session
  1047. * @param bool optional, true if the function is called by a webservice, false otherwise.
  1048. * @return void Nothing, or false on error
  1049. * The parameters is a array to delete sessions
  1050. **/
  1051. public static function delete_session_category($id_checked, $delete_session = false,$from_ws = false){
  1052. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  1053. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  1054. if (is_array($id_checked)) {
  1055. $id_checked = Database::escape_string(implode(',',$id_checked));
  1056. } else {
  1057. $id_checked = intval($id_checked);
  1058. }
  1059. //Setting session_category_id to 0
  1060. $sql = "UPDATE $tbl_session SET session_category_id = 0 WHERE session_category_id IN (".$id_checked.")";
  1061. Database::query($sql);
  1062. $sql = "SELECT id FROM $tbl_session WHERE session_category_id IN (".$id_checked.")";
  1063. $result = @Database::query($sql);
  1064. while ($rows = Database::fetch_array($result)) {
  1065. $session_id = $rows['id'];
  1066. if ($delete_session) {
  1067. if ($from_ws) {
  1068. SessionManager::delete_session($session_id,true);
  1069. } else {
  1070. SessionManager::delete_session($session_id);
  1071. }
  1072. }
  1073. }
  1074. $sql = "DELETE FROM $tbl_session_category WHERE id IN (".$id_checked.")";
  1075. $rs = @Database::query($sql);
  1076. $result = Database::affected_rows();
  1077. // Add event to system log
  1078. $user_id = api_get_user_id();
  1079. event_system(LOG_SESSION_CATEGORY_DELETE, LOG_SESSION_CATEGORY_ID, $id_checked, api_get_utc_datetime(), $user_id);
  1080. // delete extra session fields where field variable is "PERIODO"
  1081. $t_sf = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  1082. $t_sfv = Database::get_main_table(TABLE_MAIN_SESSION_FIELD_VALUES);
  1083. $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' ";
  1084. $rs_field = Database::query($sql);
  1085. $field_id = 0;
  1086. if (Database::num_rows($rs_field) > 0) {
  1087. $row_field = Database::fetch_row($rs_field);
  1088. $field_id = $row_field[0];
  1089. $sql_delete_sfv = "DELETE FROM $t_sfv WHERE session_id = '$id_checked' AND field_id = '$field_id'";
  1090. $rs_delete_sfv = Database::query($sql_delete_sfv);
  1091. }
  1092. $sql = "SELECT * FROM $t_sfv WHERE field_id = '$field_id' ";
  1093. $rs_field_id = Database::query($sql);
  1094. if (Database::num_rows($rs_field_id) == 0) {
  1095. $sql_delete_sf = "DELETE FROM $t_sf WHERE id = '$field_id'";
  1096. $rs_delete_sf = Database::query($sql_delete_sf);
  1097. }
  1098. return true;
  1099. }
  1100. /**
  1101. * Get a list of sessions of which the given conditions match with an = 'cond'
  1102. * @param array $conditions a list of condition (exemple : array('status =' =>STUDENT) or array('s.name LIKE' => "%$needle%")
  1103. * @param array $order_by a list of fields on which sort
  1104. * @return array An array with all sessions of the platform.
  1105. * @todo optional course code parameter, optional sorting parameters...
  1106. */
  1107. public static function get_sessions_list($conditions = array(), $order_by = array()) {
  1108. $session_table = Database::get_main_table(TABLE_MAIN_SESSION);
  1109. $session_category_table = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  1110. $user_table = Database::get_main_table(TABLE_MAIN_USER);
  1111. $table_access_url_rel_session = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  1112. $access_url_id = api_get_current_access_url_id();
  1113. $return_array = array();
  1114. $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
  1115. FROM $session_table s
  1116. INNER JOIN $user_table u ON s.id_coach = u.user_id
  1117. INNER JOIN $table_access_url_rel_session ar ON ar.session_id = s.id
  1118. LEFT JOIN $session_category_table sc ON s.session_category_id = sc.id
  1119. WHERE ar.access_url_id = $access_url_id ";
  1120. if (count($conditions)>0) {
  1121. $sql_query .= ' AND ';
  1122. foreach ($conditions as $field=>$value) {
  1123. $field = Database::escape_string($field);
  1124. $value = Database::escape_string($value);
  1125. $sql_query .= $field." '".$value."'";
  1126. }
  1127. }
  1128. if (count($order_by)>0) {
  1129. $sql_query .= ' ORDER BY '.Database::escape_string(implode(',',$order_by));
  1130. }
  1131. //echo $sql_query;
  1132. $sql_result = Database::query($sql_query);
  1133. if (Database::num_rows($sql_result)>0) {
  1134. while ($result = Database::fetch_array($sql_result)) {
  1135. $return_array[$result['id']] = $result;
  1136. }
  1137. }
  1138. return $return_array;
  1139. }
  1140. /**
  1141. * Get the session category information by id
  1142. * @param string session category ID
  1143. * @return mixed false if the session category does not exist, array if the session category exists
  1144. */
  1145. public static function get_session_category ($id) {
  1146. $id = intval($id);
  1147. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  1148. $sql = "SELECT id, name, date_start, date_end FROM $tbl_session_category WHERE id= $id";
  1149. $result = Database::query($sql);
  1150. $num = Database::num_rows($result);
  1151. if ($num>0){
  1152. return Database::fetch_array($result);
  1153. } else {
  1154. return false;
  1155. }
  1156. }
  1157. /**
  1158. * Get all session categories (filter by access_url_id)
  1159. * @return mixed false if the session category does not exist, array if the session category exists
  1160. */
  1161. public static function get_all_session_category() {
  1162. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  1163. $id = api_get_current_access_url_id();
  1164. $sql = 'SELECT * FROM '.$tbl_session_category.' WHERE access_url_id ="'.$id.'" ORDER BY name ASC';
  1165. $result = Database::query($sql);
  1166. if (Database::num_rows($result) > 0 ){
  1167. $data = Database::store_result($result,'ASSOC');
  1168. return $data;
  1169. } else {
  1170. return false;
  1171. }
  1172. }
  1173. /**
  1174. * Assign a coach to course in session with status = 2
  1175. * @param int - user id
  1176. * @param int - session id
  1177. * @param string - course code
  1178. * @param bool - optional, if is true the user don't be a coach now, otherwise it'll assign a coach
  1179. * @return bool true if there are affected rows, otherwise false
  1180. */
  1181. public static function set_coach_to_course_session($user_id, $session_id = 0, $course_code = '',$nocoach = false) {
  1182. // Definition of variables
  1183. $user_id = intval($user_id);
  1184. if (!empty($session_id)) {
  1185. $session_id = intval($session_id);
  1186. } else {
  1187. $session_id = api_get_session_id();
  1188. }
  1189. if (!empty($course_code)) {
  1190. $course_code = Database::escape_string($course_code);
  1191. } else {
  1192. $course_code = api_get_course_id();
  1193. }
  1194. // definitios of tables
  1195. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  1196. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  1197. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  1198. // check if user is a teacher
  1199. $sql= "SELECT * FROM $tbl_user WHERE status='1' AND user_id = '$user_id'";
  1200. $rs_check_user = Database::query($sql);
  1201. if (Database::num_rows($rs_check_user) > 0) {
  1202. if ($nocoach) {
  1203. // check if user_id exits int session_rel_user
  1204. $sql = "SELECT id_user FROM $tbl_session_rel_user WHERE id_session = '$session_id' AND id_user = '$user_id'";
  1205. $res = Database::query($sql);
  1206. if (Database::num_rows($res) > 0) {
  1207. // The user don't be a coach now
  1208. $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' ";
  1209. $rs_update = Database::query($sql);
  1210. if (Database::affected_rows() > 0) return true;
  1211. else return false;
  1212. } else {
  1213. // The user don't be a coach now
  1214. $sql = "DELETE FROM $tbl_session_rel_course_rel_user WHERE id_session = '$session_id' AND course_code = '$course_code' AND id_user = '$user_id' ";
  1215. $rs_delete = Database::query($sql);
  1216. if (Database::affected_rows() > 0) return true;
  1217. else return false;
  1218. }
  1219. } else {
  1220. // Assign user like a coach to course
  1221. // First check if the user is registered in the course
  1222. $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'";
  1223. $rs_check = Database::query($sql);
  1224. //Then update or insert
  1225. if (Database::num_rows($rs_check) > 0) {
  1226. $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' ";
  1227. $rs_update = Database::query($sql);
  1228. if (Database::affected_rows() > 0) return true;
  1229. else return false;
  1230. } else {
  1231. $sql = "INSERT INTO $tbl_session_rel_course_rel_user(id_session, course_code, id_user, status) VALUES('$session_id', '$course_code', '$user_id', 2)";
  1232. Database::query($sql);
  1233. if (Database::affected_rows() > 0) return true;
  1234. else return false;
  1235. }
  1236. }
  1237. } else {
  1238. return false;
  1239. }
  1240. }
  1241. /**
  1242. * Subscribes sessions to human resource manager (Dashboard feature)
  1243. * @param int Human Resource Manager id
  1244. * @param array Sessions id
  1245. * @param int Relation type
  1246. **/
  1247. public static function suscribe_sessions_to_hr_manager($hr_manager_id,$sessions_list) {
  1248. global $_configuration;
  1249. // Database Table Definitions
  1250. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  1251. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  1252. $tbl_session_rel_course_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  1253. $tbl_session_rel_access_url = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  1254. $hr_manager_id = intval($hr_manager_id);
  1255. $affected_rows = 0;
  1256. //Deleting assigned sessions to hrm_id
  1257. if ($_configuration['multiple_access_urls']) {
  1258. $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()."";
  1259. } else {
  1260. $sql = "SELECT id_session FROM $tbl_session_rel_user s WHERE id_user = $hr_manager_id AND relation_type=".SESSION_RELATION_TYPE_RRHH."";
  1261. }
  1262. $result = Database::query($sql);
  1263. if (Database::num_rows($result) > 0) {
  1264. while ($row = Database::fetch_array($result)) {
  1265. $sql = "DELETE FROM $tbl_session_rel_user WHERE id_session = {$row['id_session']} AND id_user = $hr_manager_id AND relation_type=".SESSION_RELATION_TYPE_RRHH." ";
  1266. Database::query($sql);
  1267. }
  1268. }
  1269. /*
  1270. //Deleting assigned courses in sessions to hrm_id
  1271. $sql = "SELECT * FROM $tbl_session_rel_course_user WHERE id_user = $hr_manager_id ";
  1272. $result = Database::query($sql);
  1273. if (Database::num_rows($result) > 0) {
  1274. $sql = "DELETE FROM $tbl_session_rel_course_user WHERE id_user = $hr_manager_id ";
  1275. Database::query($sql);
  1276. }
  1277. */
  1278. // inserting new sessions list
  1279. if (is_array($sessions_list)) {
  1280. foreach ($sessions_list as $session_id) {
  1281. $session_id = intval($session_id);
  1282. $insert_sql = "INSERT IGNORE INTO $tbl_session_rel_user(id_session, id_user, relation_type) VALUES($session_id, $hr_manager_id, '".SESSION_RELATION_TYPE_RRHH."')";
  1283. Database::query($insert_sql);
  1284. $affected_rows = Database::affected_rows();
  1285. }
  1286. }
  1287. return $affected_rows;
  1288. }
  1289. /**
  1290. * Get sessions followed by human resources manager
  1291. * @param int Human resources manager or Session admin id
  1292. * @return array sessions
  1293. */
  1294. public static function get_sessions_followed_by_drh($hr_manager_id) {
  1295. global $_configuration;
  1296. // Database Table Definitions
  1297. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  1298. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  1299. $tbl_session_rel_access_url = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  1300. $hr_manager_id = intval($hr_manager_id);
  1301. $assigned_sessions_to_hrm = array();
  1302. if (api_is_multiple_url_enabled()) {
  1303. $sql = "SELECT * FROM $tbl_session s INNER JOIN $tbl_session_rel_user sru ON (sru.id_session = s.id) LEFT JOIN $tbl_session_rel_access_url a ON (s.id = a.session_id)
  1304. WHERE sru.id_user = '$hr_manager_id' AND sru.relation_type = '".SESSION_RELATION_TYPE_RRHH."' AND access_url_id = ".api_get_current_access_url_id()."";
  1305. } else {
  1306. $sql = "SELECT * FROM $tbl_session s
  1307. 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."' ";
  1308. }
  1309. $rs_assigned_sessions = Database::query($sql);
  1310. if (Database::num_rows($rs_assigned_sessions) > 0) {
  1311. while ($row_assigned_sessions = Database::fetch_array($rs_assigned_sessions)) {
  1312. $assigned_sessions_to_hrm[$row_assigned_sessions['id']] = $row_assigned_sessions;
  1313. }
  1314. }
  1315. return $assigned_sessions_to_hrm;
  1316. }
  1317. /**
  1318. * Gets the list of courses by session filtered by access_url
  1319. * @param int session id
  1320. * @return array list of courses
  1321. */
  1322. public static function get_course_list_by_session_id ($session_id) {
  1323. $tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
  1324. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  1325. // select the courses
  1326. $sql = "SELECT * FROM $tbl_course c INNER JOIN $tbl_session_rel_course src ON c.code = src.course_code
  1327. WHERE src.id_session = '$session_id' ORDER BY title;";
  1328. $result = Database::query($sql);
  1329. $num_rows = Database::num_rows($result);
  1330. $courses = array();
  1331. if ($num_rows > 0) {
  1332. while ($row = Database::fetch_array($result,'ASSOC')) {
  1333. $courses[$row['id']] = $row;
  1334. }
  1335. }
  1336. return $courses;
  1337. }
  1338. /**
  1339. * Get the session id based on the original id and field name in the extra fields. Returns 0 if session was not found
  1340. *
  1341. * @param string Original session id
  1342. * @param string Original field name
  1343. * @return int Session id
  1344. */
  1345. public static function get_session_id_from_original_id($original_session_id_value, $original_session_id_name) {
  1346. $t_sfv = Database::get_main_table(TABLE_MAIN_SESSION_FIELD_VALUES);
  1347. $table_field = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  1348. $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'";
  1349. $res_session = Database::query($sql_session);
  1350. $row = Database::fetch_object($res_session);
  1351. if ($row) {
  1352. return $row->session_id;
  1353. } else {
  1354. return 0;
  1355. }
  1356. }
  1357. /**
  1358. * Get users by session
  1359. * @param int session id
  1360. * @param int filter by status
  1361. * @return array a list with an user list
  1362. */
  1363. public static function get_users_by_session($id, $with_status = null) {
  1364. if (empty($id)) {
  1365. return array();
  1366. }
  1367. $id = intval($id);
  1368. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  1369. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  1370. $sql = "SELECT $tbl_user.user_id, lastname, firstname, username
  1371. FROM $tbl_user INNER JOIN $tbl_session_rel_user
  1372. ON $tbl_user.user_id = $tbl_session_rel_user.id_user
  1373. AND $tbl_session_rel_user.id_session = $id";
  1374. if (isset($with_status) && $with_status != '') {
  1375. $with_status = intval($with_status);
  1376. $sql .= " WHERE relation_type = $with_status ";
  1377. }
  1378. $result = Database::query($sql);
  1379. while ($row = Database::fetch_array($result,'ASSOC')) {
  1380. $return_array[] = $row;
  1381. }
  1382. return $return_array;
  1383. }
  1384. /**
  1385. * The general coach (field: session.id_coach)
  1386. * @param int user id
  1387. */
  1388. public static function get_sessions_by_general_coach($user_id) {
  1389. $session_table = Database::get_main_table(TABLE_MAIN_SESSION);
  1390. $user_id = intval($user_id);
  1391. // session where we are general coach
  1392. $sql = "SELECT DISTINCT *
  1393. FROM $session_table
  1394. WHERE id_coach = $user_id";
  1395. if (api_is_multiple_url_enabled()) {
  1396. $tbl_session_rel_access_url= Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  1397. $access_url_id = api_get_current_access_url_id();
  1398. if ($access_url_id != -1) {
  1399. $sql = 'SELECT DISTINCT session.*
  1400. FROM '.$session_table.' session INNER JOIN '.$tbl_session_rel_access_url.' session_rel_url
  1401. ON (session.id = session_rel_url.session_id)
  1402. WHERE id_coach = '.$user_id.' AND access_url_id = '.$access_url_id;
  1403. }
  1404. }
  1405. $sql .= ' ORDER by name';
  1406. $result = Database::query($sql);
  1407. return Database::store_result($result, 'ASSOC');
  1408. }
  1409. public static function get_sessions_by_coach($user_id) {
  1410. $session_table = Database::get_main_table(TABLE_MAIN_SESSION);
  1411. return Database::select('*', $session_table, array('where'=>array('id_coach = ?'=>$user_id)));
  1412. }
  1413. public static function get_user_status_in_course_session($user_id, $course_code, $session_id) {
  1414. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  1415. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  1416. $sql = "SELECT session_rcru.status
  1417. FROM $tbl_session_rel_course_rel_user session_rcru, $tbl_user user
  1418. WHERE session_rcru.id_user = user.user_id AND
  1419. session_rcru.id_session = '".intval($session_id)."' AND
  1420. session_rcru.course_code ='".Database::escape_string($course_code)."' AND
  1421. user.user_id = ".intval($user_id);
  1422. $result = Database::query($sql);
  1423. $status = false;
  1424. if (Database::num_rows($result)) {
  1425. $status = Database::fetch_row($result);
  1426. $status = $status['0'];
  1427. }
  1428. return $status;
  1429. }
  1430. /**
  1431. * Gets user status within a session
  1432. * @param $user_id
  1433. * @param $course_code
  1434. * @param $session_id
  1435. * @return unknown_type
  1436. */
  1437. public static function get_user_status_in_session($user_id, $course_code, $session_id) {
  1438. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  1439. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  1440. $sql = "SELECT session_rcru.status
  1441. FROM $tbl_session_rel_course_rel_user session_rcru, $tbl_user user
  1442. WHERE session_rcru.id_user = user.user_id AND
  1443. session_rcru.id_session = '".intval($session_id)."' AND
  1444. session_rcru.course_code ='".Database::escape_string($course_code)."' AND
  1445. user.user_id = ".intval($user_id);
  1446. $result = Database::query($sql);
  1447. $status = false;
  1448. if (Database::num_rows($result)) {
  1449. $status = Database::fetch_row($result);
  1450. $status = $status['0'];
  1451. }
  1452. return $status;
  1453. }
  1454. static function get_all_sessions_by_promotion($id) {
  1455. $t = Database::get_main_table(TABLE_MAIN_SESSION);
  1456. return Database::select('*', $t, array('where'=>array('promotion_id = ?'=>$id)));
  1457. }
  1458. static function suscribe_sessions_to_promotion($promotion_id, $list) {
  1459. $t = Database::get_main_table(TABLE_MAIN_SESSION);
  1460. $params = array();
  1461. $params['promotion_id'] = 0;
  1462. Database::update($t, $params, array('promotion_id = ?'=>$promotion_id));
  1463. $params['promotion_id'] = $promotion_id;
  1464. if (!empty($list)) {
  1465. foreach ($list as $session_id) {
  1466. $session_id= intval($session_id);
  1467. Database::update($t, $params, array('id = ?'=>$session_id));
  1468. }
  1469. }
  1470. }
  1471. /**
  1472. * Updates a session status
  1473. * @param int session id
  1474. * @param int status
  1475. */
  1476. public static function set_session_status($session_id, $status) {
  1477. $t = Database::get_main_table(TABLE_MAIN_SESSION);
  1478. $params['visibility'] = $status;
  1479. Database::update($t, $params, array('id = ?'=>$session_id));
  1480. }
  1481. /**
  1482. * Copies a session with the same data to a new session.
  1483. * The new copy is not assigned to the same promotion. @see suscribe_sessions_to_promotions() for that
  1484. * @param int Session ID
  1485. * @param bool Whether to copy the relationship with courses
  1486. * @param bool Whether to copy the relationship with users
  1487. * @param bool New courses will be created
  1488. * @return int The new session ID on success, 0 otherwise
  1489. * @todo make sure the extra session fields are copied too
  1490. */
  1491. /**
  1492. * @param $id
  1493. * @param $copy_courses
  1494. * @param $copy_users
  1495. * @param $create_new_courses
  1496. * @param $set_exercises_lp_invisible
  1497. * @return int
  1498. */
  1499. public function copy_session($id, $copy_courses = true, $copy_users = true, $create_new_courses = false, $set_exercises_lp_invisible = false) {
  1500. $id = intval($id);
  1501. $s = self::fetch($id);
  1502. $s['year_start'] = substr($s['date_start'],0,4);
  1503. $s['month_start'] = substr($s['date_start'],5,2);
  1504. $s['day_start'] = substr($s['date_start'],8,2);
  1505. $s['year_end'] = substr($s['date_end'],0,4);
  1506. $s['month_end'] = substr($s['date_end'],5,2);
  1507. $s['day_end'] = substr($s['date_end'],8,2);
  1508. $consider_start = true;
  1509. if ($s['year_start'].'-'.$s['month_start'].'-'.$s['day_start'] == '0000-00-00') {
  1510. $consider_start = false;
  1511. }
  1512. $consider_end = true;
  1513. if ($s['year_end'].'-'.$s['month_end'].'-'.$s['day_end'] == '0000-00-00') {
  1514. $consider_end = false;
  1515. }
  1516. $sid = self::create_session($s['name'].' '.get_lang('Copy'),
  1517. $s['year_start'], $s['month_start'], $s['day_start'],
  1518. $s['year_end'],$s['month_end'],$s['day_end'],
  1519. $s['nb_days_acess_before_beginning'],$s['nb_days_acess_after_end'],
  1520. false,(int)$s['id_coach'], $s['session_category_id'],
  1521. (int)$s['visibility'],$consider_start, $consider_end, true);
  1522. if (!is_numeric($sid) || empty($sid)) {
  1523. return false;
  1524. }
  1525. if ($copy_courses) {
  1526. // Register courses from the original session to the new session
  1527. $courses = self::get_course_list_by_session_id($id);
  1528. $short_courses = $new_short_courses = array();
  1529. if (is_array($courses) && count($courses)>0) {
  1530. foreach ($courses as $course) {
  1531. $short_courses[] = $course;
  1532. }
  1533. }
  1534. $courses = null;
  1535. //We will copy the current courses of the session to new courses
  1536. if (!empty($short_courses)) {
  1537. if ($create_new_courses) {
  1538. //Just in case
  1539. if (function_exists('ini_set')) {
  1540. api_set_memory_limit('256M');
  1541. ini_set('max_execution_time',0);
  1542. }
  1543. $params = array();
  1544. $params['skip_lp_dates'] = true;
  1545. foreach ($short_courses as $course_data) {
  1546. $course_info = CourseManager::copy_course_simple($course_data['title'].' '.get_lang('Copy'), $course_data['course_code'], $id, $sid, $params);
  1547. if ($course_info) {
  1548. //By default new elements are invisible
  1549. if ($set_exercises_lp_invisible) {
  1550. require_once api_get_path(SYS_CODE_PATH).'newscorm/learnpathList.class.php';
  1551. $list = new LearnpathList('', $course_info['code'], $sid);
  1552. $flat_list = $list->get_flat_list();
  1553. if (!empty($flat_list)) {
  1554. foreach($flat_list as $lp_id => $data) {
  1555. api_item_property_update($course_info, TOOL_LEARNPATH, $lp_id, 'invisible', api_get_user_id(), 0 ,0, 0, 0, $sid);
  1556. api_item_property_update($course_info, TOOL_LEARNPATH, $lp_id, 'invisible', api_get_user_id(), 0 ,0, 0, 0);
  1557. }
  1558. }
  1559. $quiz_table = Database::get_course_table(TABLE_QUIZ_TEST);
  1560. $course_id = $course_info['real_id'];
  1561. //@todo check this query
  1562. $sql = "UPDATE $quiz_table SET active = 0 WHERE c_id = $course_id ";
  1563. $result=Database::query($sql);
  1564. }
  1565. $new_short_courses[] = $course_info['code'];
  1566. }
  1567. }
  1568. } else {
  1569. foreach($short_courses as $course_data) {
  1570. $new_short_courses[] = $course_data['code'];
  1571. }
  1572. }
  1573. $short_courses = $new_short_courses;
  1574. $res = self::add_courses_to_session($sid, $short_courses, true);
  1575. $short_courses = null;
  1576. }
  1577. }
  1578. if ($copy_users) {
  1579. // Register users from the original session to the new session
  1580. $users = self::get_users_by_session($id);
  1581. $short_users = array();
  1582. if (is_array($users) && count($users)>0) {
  1583. foreach ($users as $user) {
  1584. $short_users[] = $user['user_id'];
  1585. }
  1586. }
  1587. $users = null;
  1588. //Subscribing in read only mode
  1589. $res = self::suscribe_users_to_session($sid, $short_users, SESSION_VISIBLE_READ_ONLY, true, false);
  1590. $short_users = null;
  1591. }
  1592. return $sid;
  1593. }
  1594. static function user_is_general_coach($user_id, $session_id) {
  1595. $session_id = intval($session_id);
  1596. $user_id = intval($user_id);
  1597. $session_table = Database::get_main_table(TABLE_MAIN_SESSION);
  1598. $sql = "SELECT DISTINCT id
  1599. FROM $session_table
  1600. WHERE session.id_coach = '".$user_id."' AND id = '$session_id'";
  1601. $result = Database::query($sql);
  1602. if ($result && Database::num_rows($result)) {
  1603. return true;
  1604. }
  1605. return false;
  1606. }
  1607. /**
  1608. * Get the number of sessions
  1609. * @param int ID of the URL we want to filter on (optional)
  1610. * @return int Number of sessions
  1611. */
  1612. public static function count_sessions($access_url_id=null) {
  1613. $session_table = Database::get_main_table(TABLE_MAIN_SESSION);
  1614. $access_url_rel_session_table = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  1615. $sql = "SELECT count(id) FROM $session_table s";
  1616. if (!empty($access_url_id) && $access_url_id == intval($access_url_id)) {
  1617. $sql .= ", $access_url_rel_session_table u ".
  1618. " WHERE s.id = u.session_id AND u.access_url_id = $access_url_id";
  1619. }
  1620. $res = Database::query($sql);
  1621. $row = Database::fetch_row($res);
  1622. return $row[0];
  1623. }
  1624. static function protect_session_edit($id) {
  1625. api_protect_admin_script(true);
  1626. $session_info = self::fetch($id);
  1627. if (!api_is_platform_admin() && api_get_setting('allow_session_admins_to_manage_all_sessions') != 'true') {
  1628. if ($session_info['session_admin_id'] != api_get_user_id()) {
  1629. api_not_allowed(true);
  1630. }
  1631. }
  1632. }
  1633. static function get_session_by_course($course_code) {
  1634. $table_session_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  1635. $table_session = Database::get_main_table(TABLE_MAIN_SESSION);
  1636. $course_code = Database::escape_string($course_code);
  1637. $sql = "SELECT name, s.id FROM $table_session_course sc INNER JOIN $table_session s ON (sc.id_session = s.id)
  1638. WHERE sc.course_code = '$course_code' ";
  1639. $result = Database::query($sql);
  1640. return Database::store_result($result);
  1641. }
  1642. static function get_sessions_by_user($user_id) {
  1643. $session_categories = UserManager::get_sessions_by_category($user_id);
  1644. $session_array = array();
  1645. if (!empty($session_categories)) {
  1646. foreach ($session_categories as $category) {
  1647. if (isset($category['sessions'])) {
  1648. foreach ($category['sessions'] as $session) {
  1649. $session_array[] = $session;
  1650. }
  1651. }
  1652. }
  1653. }
  1654. return $session_array;
  1655. }
  1656. }