sessionmanager.lib.php 76 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. global $_configuration;
  177. if ($_configuration['multiple_access_urls']) {
  178. $table_access_url_rel_session= Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  179. $access_url_id = api_get_current_access_url_id();
  180. if ($access_url_id != -1) {
  181. $where.= " AND ar.access_url_id = $access_url_id ";
  182. $query_rows = "SELECT count(*) as total_rows
  183. FROM $tbl_session s
  184. LEFT JOIN $tbl_session_category sc ON s.session_category_id = sc.id
  185. INNER JOIN $tbl_user u ON s.id_coach = u.user_id
  186. INNER JOIN $table_access_url_rel_session ar ON ar.session_id = s.id
  187. $where ";
  188. }
  189. }
  190. $result_rows = Database::query($query_rows);
  191. $recorset = Database::fetch_array($result_rows);
  192. $num = $recorset['total_rows'];
  193. return $num;
  194. }
  195. /**
  196. * Gets the admin session list callback of the admin/session_list.php page
  197. * @param array order and limit keys
  198. */
  199. public static function get_sessions_admin($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 '$today' < s.date_end) OR
  218. (s.date_start = '0000-00-00' AND s.date_end = '0000-00-00' ) OR
  219. (s.date_start <= '$today' AND '0000-00-00' = s.date_end) OR
  220. ('$today' < s.date_end AND '0000-00-00' = s.date_start)
  221. , 1, 0)
  222. as session_active,
  223. s.name,
  224. nbr_courses,
  225. nbr_users,
  226. s.date_start,
  227. s.date_end,
  228. $coach_name,
  229. sc.name as category_name,
  230. s.visibility,
  231. u.user_id,
  232. s.id";
  233. $limit = null;
  234. if (!empty($options['limit'])) {
  235. $limit = " LIMIT ".$options['limit'];
  236. }
  237. $query = "$select FROM $tbl_session s
  238. LEFT JOIN $tbl_session_category sc ON s.session_category_id = sc.id
  239. INNER JOIN $tbl_user u ON s.id_coach = u.user_id
  240. $where $limit";
  241. global $_configuration;
  242. if ($_configuration['multiple_access_urls']) {
  243. $table_access_url_rel_session= Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  244. $access_url_id = api_get_current_access_url_id();
  245. if ($access_url_id != -1) {
  246. $where.= " AND ar.access_url_id = $access_url_id ";
  247. $query = " $select
  248. FROM $tbl_session s
  249. LEFT JOIN $tbl_session_category sc ON s.session_category_id = sc.id
  250. INNER JOIN $tbl_user u ON s.id_coach = u.user_id
  251. INNER JOIN $table_access_url_rel_session ar ON ar.session_id = s.id
  252. $where $limit";
  253. }
  254. }
  255. $query .= ") AS session_table";
  256. if (!empty($options['where'])) {
  257. $query .= ' WHERE '.$options['where'];
  258. }
  259. if (!empty($options['order'])) {
  260. $query .= " ORDER BY ".$options['order'];
  261. }
  262. //var_dump($query);
  263. $result = Database::query($query);
  264. $formatted_sessions = array();
  265. if (Database::num_rows($result)) {
  266. $sessions = Database::store_result($result);
  267. foreach ($sessions as $session) {
  268. $session['name'] = Display::url($session['name'], "resume_session.php?id_session=".$session['id']);
  269. $session['coach_name'] = Display::url($session['coach_name'], "user_information.php?user_id=".$session['user_id']);
  270. if ($session['date_start'] == '0000-00-00' && $session['date_end'] == '0000-00-00') {
  271. // $session['session_active'] = 1;
  272. }
  273. if ($session['session_active'] == 1) {
  274. $session['session_active'] = Display::return_icon('accept.png', get_lang('Active'), array(), ICON_SIZE_SMALL);
  275. } else {
  276. $session['session_active'] = Display::return_icon('error.png', get_lang('Inactive'), array(), ICON_SIZE_SMALL);
  277. }
  278. if ($session['date_start'] == '0000-00-00') {
  279. $session['date_start'] = '';
  280. }
  281. if ($session['date_end'] == '0000-00-00') {
  282. $session['date_end'] = '';
  283. }
  284. switch ($session['visibility']) {
  285. case SESSION_VISIBLE_READ_ONLY: //1
  286. $session['visibility'] = get_lang('ReadOnly');
  287. break;
  288. case SESSION_VISIBLE: //2
  289. $session['visibility'] = get_lang('Visible');
  290. break;
  291. case SESSION_INVISIBLE: //3
  292. $session['visibility'] = api_ucfirst(get_lang('Invisible'));
  293. break;
  294. }
  295. $formatted_sessions[] = $session;
  296. }
  297. }
  298. return $formatted_sessions;
  299. }
  300. /**
  301. * Creates a new course code based in given code
  302. *
  303. * @param string wanted code
  304. * <code>
  305. * $wanted_code = 'curse' if there are in the DB codes like curse1 curse2 the function will return: course3
  306. * if the course code doest not exist in the DB the same course code will be returned
  307. * </code>
  308. * @return string wanted unused code
  309. */
  310. function generate_nice_next_session_name($session_name) {
  311. $session_name_ok = !self::session_name_exists($session_name);
  312. if (!$session_name_ok) {
  313. $table = Database::get_main_table(TABLE_MAIN_SESSION);
  314. $session_name = Database::escape_string($session_name);
  315. $sql = "SELECT count(*) as count FROM $table WHERE name LIKE '$session_name%'";
  316. $result = Database::query($sql);
  317. if (Database::num_rows($result) > 0 ) {
  318. $row = Database::fetch_array($result);
  319. $count = $row['count'] + 1;
  320. $session_name = $session_name.'_'.$count;
  321. $result = self::session_name_exists($session_name);
  322. if (!$result) {
  323. return $session_name;
  324. }
  325. }
  326. return false;
  327. }
  328. return $session_name;
  329. }
  330. /**
  331. * Edit a session
  332. * @author Carlos Vargas from existing code
  333. * @param integer id
  334. * @param string name
  335. * @param integer year_start
  336. * @param integer month_start
  337. * @param integer day_start
  338. * @param integer year_end
  339. * @param integer month_end
  340. * @param integer day_end
  341. * @param integer nb_days_acess_before
  342. * @param integer nb_days_acess_after
  343. * @param integer nolimit
  344. * @param integer id_coach
  345. * @param integer id_session_category
  346. * @return $id;
  347. * The parameter id is a primary key
  348. **/
  349. public static function edit_session ($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) {
  350. global $_user;
  351. $name=trim(stripslashes($name));
  352. $year_start=intval($year_start);
  353. $month_start=intval($month_start);
  354. $day_start=intval($day_start);
  355. $year_end=intval($year_end);
  356. $month_end=intval($month_end);
  357. $day_end=intval($day_end);
  358. $id_coach= intval($id_coach);
  359. $nb_days_acess_before= intval($nb_days_acess_before);
  360. $nb_days_acess_after = intval($nb_days_acess_after);
  361. $id_session_category = intval($id_session_category);
  362. $id_visibility = intval($id_visibility);
  363. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  364. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  365. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  366. if (empty($nolimit)) {
  367. $date_start = "$year_start-".(($month_start < 10)?"0$month_start":$month_start)."-".(($day_start < 10)?"0$day_start":$day_start);
  368. $date_end = "$year_end-".(($month_end < 10)?"0$month_end":$month_end)."-".(($day_end < 10)?"0$day_end":$day_end);
  369. } else {
  370. $date_start = "0000-00-00";
  371. $date_end = "0000-00-00";
  372. $id_visibility = 1;//force read only
  373. }
  374. if (!empty($no_end_limit)) {
  375. $date_end = "0000-00-00";
  376. }
  377. if (empty($end_limit)) {
  378. $date_end ="0000-00-00";
  379. $id_visibility = 1;//force read only
  380. }
  381. if (empty($start_limit)) {
  382. $date_start ="0000-00-00";
  383. }
  384. if (empty($name)) {
  385. $msg=get_lang('SessionNameIsRequired');
  386. return $msg;
  387. } elseif (empty($id_coach)) {
  388. $msg=get_lang('CoachIsRequired');
  389. return $msg;
  390. } elseif (!empty($start_limit) && empty($nolimit) && (!$month_start || !$day_start || !$year_start || !checkdate($month_start,$day_start,$year_start))) {
  391. $msg=get_lang('InvalidStartDate');
  392. return $msg;
  393. } elseif (!empty($end_limit) && empty($nolimit) && (!$month_end || !$day_end || !$year_end || !checkdate($month_end,$day_end,$year_end))) {
  394. $msg=get_lang('InvalidEndDate');
  395. return $msg;
  396. } elseif (!empty($start_limit) && !empty($end_limit) && empty($nolimit) && $date_start >= $date_end) {
  397. $msg=get_lang('StartDateShouldBeBeforeEndDate');
  398. return $msg;
  399. } else {
  400. $rs = Database::query("SELECT id FROM $tbl_session WHERE name='".Database::escape_string($name)."'");
  401. $exists = false;
  402. while ($row = Database::fetch_array($rs)) {
  403. if($row['id']!=$id)
  404. $exists = true;
  405. }
  406. if ($exists) {
  407. $msg=get_lang('SessionNameAlreadyExists');
  408. return $msg;
  409. } else {
  410. $sql="UPDATE $tbl_session " .
  411. "SET name='".Database::escape_string($name)."',
  412. date_start='".$date_start."',
  413. date_end='".$date_end."',
  414. id_coach='".$id_coach."',
  415. nb_days_access_before_beginning = ".$nb_days_acess_before.",
  416. nb_days_access_after_end = ".$nb_days_acess_after.",
  417. session_category_id = ".$id_session_category." ,
  418. visibility= ".$id_visibility."
  419. WHERE id='$id'";
  420. Database::query($sql);
  421. return $id;
  422. }
  423. }
  424. }
  425. /**
  426. * Delete session
  427. * @author Carlos Vargas from existing code
  428. * @param array id_checked
  429. * @param boolean optional, true if the function is called by a webservice, false otherwise.
  430. * @return void Nothing, or false on error
  431. * The parameters is a array to delete sessions
  432. **/
  433. public static function delete_session ($id_checked,$from_ws = false) {
  434. $tbl_session= Database::get_main_table(TABLE_MAIN_SESSION);
  435. $tbl_session_rel_course= Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  436. $tbl_session_rel_course_rel_user= Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  437. $tbl_session_rel_user= Database::get_main_table(TABLE_MAIN_SESSION_USER);
  438. $tbl_url_session = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  439. global $_user;
  440. if(is_array($id_checked)) {
  441. $id_checked = Database::escape_string(implode(',',$id_checked));
  442. } else {
  443. $id_checked = intval($id_checked);
  444. }
  445. if (!api_is_platform_admin() && !$from_ws) {
  446. $sql = 'SELECT session_admin_id FROM '.Database :: get_main_table(TABLE_MAIN_SESSION).' WHERE id='.$id_checked;
  447. $rs = Database::query($sql);
  448. if (Database::result($rs,0,0)!=$_user['user_id']) {
  449. api_not_allowed(true);
  450. }
  451. }
  452. Database::query("DELETE FROM $tbl_session WHERE id IN($id_checked)");
  453. Database::query("DELETE FROM $tbl_session_rel_course WHERE id_session IN($id_checked)");
  454. Database::query("DELETE FROM $tbl_session_rel_course_rel_user WHERE id_session IN($id_checked)");
  455. Database::query("DELETE FROM $tbl_session_rel_user WHERE id_session IN($id_checked)");
  456. Database::query("DELETE FROM $tbl_url_session WHERE session_id IN($id_checked)");
  457. // delete extra session fields
  458. $t_sf = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  459. $t_sfv = Database::get_main_table(TABLE_MAIN_SESSION_FIELD_VALUES);
  460. // Delete extra fields from session where field variable is "SECCION"
  461. $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' ";
  462. $rs_field = Database::query($sql);
  463. $field_id = 0;
  464. if (Database::num_rows($rs_field) == 1) {
  465. $row_field = Database::fetch_row($rs_field);
  466. $field_id = $row_field[0];
  467. $sql_delete_sfv = "DELETE FROM $t_sfv WHERE session_id = '$id_checked' AND field_id = '$field_id'";
  468. $rs_delete_sfv = Database::query($sql_delete_sfv);
  469. }
  470. $sql = "SELECT * FROM $t_sfv WHERE field_id = '$field_id' ";
  471. $rs_field_id = Database::query($sql);
  472. if (Database::num_rows($rs_field_id) == 0) {
  473. $sql_delete_sf = "DELETE FROM $t_sf WHERE id = '$field_id'";
  474. $rs_delete_sf = Database::query($sql_delete_sf);
  475. }
  476. /*
  477. $sql = "SELECT distinct field_id FROM $t_sfv WHERE session_id = '$id_checked'";
  478. $res_field_ids = @Database::query($sql);
  479. if (Database::num_rows($res_field_ids) > 0) {
  480. while($row_field_id = Database::fetch_row($res_field_ids)){
  481. $field_ids[] = $row_field_id[0];
  482. }
  483. }
  484. //delete from table_session_field_value from a given session id
  485. $sql_session_field_value = "DELETE FROM $t_sfv WHERE session_id = '$id_checked'";
  486. @Database::query($sql_session_field_value);
  487. $sql = "SELECT distinct field_id FROM $t_sfv";
  488. $res_field_all_ids = @Database::query($sql);
  489. if (Database::num_rows($res_field_all_ids) > 0) {
  490. while($row_field_all_id = Database::fetch_row($res_field_all_ids)){
  491. $field_all_ids[] = $row_field_all_id[0];
  492. }
  493. }
  494. if (count($field_ids) > 0 && count($field_all_ids) > 0) {
  495. foreach($field_ids as $field_id) {
  496. // check if field id is used into table field value
  497. if (in_array($field_id,$field_all_ids)) {
  498. continue;
  499. } else {
  500. $sql_session_field = "DELETE FROM $t_sf WHERE id = '$field_id'";
  501. Database::query($sql_session_field);
  502. }
  503. }
  504. }
  505. */
  506. // Add event to system log
  507. $user_id = api_get_user_id();
  508. event_system(LOG_SESSION_DELETE, LOG_SESSION_ID, $id_checked, api_get_utc_datetime(), $user_id);
  509. }
  510. /**
  511. * Subscribes users (students) to the given session and optionally (default) unsubscribes previous users
  512. * @author Carlos Vargas from existing code
  513. * @param integer Session ID
  514. * @param array List of user IDs
  515. * @param bool Whether to unsubscribe existing users (true, default) or not (false)
  516. * @return void Nothing, or false on error
  517. **/
  518. public static function suscribe_users_to_session($id_session, $user_list, $session_visibility = SESSION_VISIBLE_READ_ONLY, $empty_users = true, $send_email = false) {
  519. if ($id_session!= strval(intval($id_session))) return false;
  520. foreach($user_list as $intUser){
  521. if ($intUser!= strval(intval($intUser))) return false;
  522. }
  523. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  524. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  525. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  526. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  527. $session_info = api_get_session_info($id_session);
  528. $session_name = $session_info['name'];
  529. //from function parameter
  530. if (empty($session_visibility)) {
  531. $session_visibility = $session_info['visibility']; //loaded from DB
  532. //default status loaded if empty
  533. if (empty($session_visibility))
  534. $session_visibility = SESSION_VISIBLE_READ_ONLY; // by default readonly 1
  535. } else {
  536. if (!in_array($session_visibility, array(SESSION_VISIBLE_READ_ONLY, SESSION_VISIBLE, SESSION_INVISIBLE))) {
  537. $session_visibility = SESSION_VISIBLE_READ_ONLY;
  538. }
  539. }
  540. $sql = "SELECT id_user FROM $tbl_session_rel_course_rel_user WHERE id_session = '$id_session' AND status = 0";
  541. $result = Database::query($sql);
  542. $existingUsers = array();
  543. while ($row = Database::fetch_array($result)) {
  544. $existingUsers[] = $row['id_user'];
  545. }
  546. $sql = "SELECT course_code FROM $tbl_session_rel_course WHERE id_session = '$id_session'";
  547. $result = Database::query($sql);
  548. $course_list = array();
  549. while ($row = Database::fetch_array($result)) {
  550. $course_list[] = $row['course_code'];
  551. }
  552. if ($send_email) {
  553. //global $_configuration;
  554. //sending emails only
  555. if (is_array($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, $content, array(), array(), null, null, null, null, null);
  562. /*$emailheaders = 'From: '.get_setting('administratorName').' '.get_setting('administratorSurname').' <'.get_setting('emailAdministrator').">\n";
  563. $emailheaders .= 'Reply-To: '.get_setting('emailAdministrator');
  564. $emailbody = get_lang('Dear')." ".stripslashes(api_get_person_name($firstname, $lastname)).",\n\n".sprintf(get_lang('YouAreRegisterToSessionX'), $session_name) ." \n\n" .get_lang('Address') ." ". get_setting('siteName') ." ". get_lang('Is') ." : ". api_get_path(WEB_PATH) ."\n\n". get_lang('Problem'). "\n\n". get_lang('Formula').",\n\n".get_setting('administratorName')." ".get_setting('administratorSurname')."\n". get_lang('Manager'). " ".get_setting('siteName')."\nT. ".get_setting('administratorTelephone')."\n" .get_lang('Email') ." : ".get_setting('emailAdministrator');
  565. @api_send_mail($emailto, $emailsubject, $emailbody, $emailheaders);*/
  566. }
  567. }
  568. }
  569. }
  570. foreach ($course_list as $enreg_course) {
  571. // for each course in the session
  572. $nbr_users = 0;
  573. $enreg_course = Database::escape_string($enreg_course);
  574. // delete existing users
  575. if ($empty_users) {
  576. foreach ($existingUsers as $existing_user) {
  577. if (!in_array($existing_user, $user_list)) {
  578. $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";
  579. Database::query($sql);
  580. if (Database::affected_rows()) {
  581. $nbr_users--;
  582. }
  583. }
  584. }
  585. }
  586. //Replace with this new function
  587. //
  588. // insert new users into session_rel_course_rel_user and ignore if they already exist
  589. foreach ($user_list as $enreg_user) {
  590. if(!in_array($enreg_user, $existingUsers)) {
  591. $enreg_user = Database::escape_string($enreg_user);
  592. $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','$session_visibility', '0')";
  593. Database::query($insert_sql);
  594. if(Database::affected_rows()) {
  595. $nbr_users++;
  596. }
  597. }
  598. }
  599. // count users in this session-course relation
  600. $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";
  601. $rs = Database::query($sql);
  602. list($nbr_users) = Database::fetch_array($rs);
  603. // update the session-course relation to add the users total
  604. $update_sql = "UPDATE $tbl_session_rel_course SET nbr_users=$nbr_users WHERE id_session='$id_session' AND course_code='$enreg_course'";
  605. Database::query($update_sql);
  606. }
  607. // Delete users from the session
  608. if ($empty_users===true) {
  609. Database::query("DELETE FROM $tbl_session_rel_user WHERE id_session = $id_session AND relation_type<>".SESSION_RELATION_TYPE_RRHH."");
  610. }
  611. // Insert missing users into session
  612. $nbr_users = 0;
  613. foreach ($user_list as $enreg_user) {
  614. $enreg_user = Database::escape_string($enreg_user);
  615. $nbr_users++;
  616. $insert_sql = "INSERT IGNORE INTO $tbl_session_rel_user (id_session, id_user) VALUES ('$id_session','$enreg_user')";
  617. Database::query($insert_sql);
  618. }
  619. // update number of users in the session
  620. $nbr_users = count($user_list);
  621. if ($empty_users) {
  622. // update number of users in the session
  623. $update_sql = "UPDATE $tbl_session SET nbr_users= $nbr_users WHERE id='$id_session' ";
  624. Database::query($update_sql);
  625. } else {
  626. $update_sql = "UPDATE $tbl_session SET nbr_users= nbr_users + $nbr_users WHERE id='$id_session' ";
  627. Database::query($update_sql);
  628. }
  629. }
  630. function subscribe_users_to_session_course($user_list, $session_id, $course_code, $session_visibility = SESSION_VISIBLE_READ_ONLY ) {
  631. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  632. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  633. if (empty($user_list) || empty($session_id) || empty($course_code)) {
  634. return false;
  635. }
  636. $session_id = intval($session_id);
  637. $course_code = Database::escape_string($course_code);
  638. $session_visibility = intval($session_visibility);
  639. $nbr_users = 0;
  640. foreach ($user_list as $enreg_user) {
  641. //if (!in_array($enreg_user, $existingUsers)) {
  642. $enreg_user = intval($enreg_user);
  643. $insert_sql = "INSERT IGNORE INTO $tbl_session_rel_course_rel_user(id_session,course_code,id_user,visibility)
  644. VALUES ('$session_id','$course_code','$enreg_user','$session_visibility')";
  645. Database::query($insert_sql);
  646. if (Database::affected_rows()) {
  647. $nbr_users++;
  648. }
  649. //}
  650. }
  651. // count users in this session-course relation
  652. $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";
  653. $rs = Database::query($sql);
  654. list($nbr_users) = Database::fetch_array($rs);
  655. // update the session-course relation to add the users total
  656. $update_sql = "UPDATE $tbl_session_rel_course SET nbr_users=$nbr_users WHERE id_session='$id_session' AND course_code='$enreg_course'";
  657. Database::query($update_sql);
  658. }
  659. /**
  660. * Unsubscribe user from session
  661. *
  662. * @param int Session id
  663. * @param int User id
  664. * @return bool True in case of success, false in case of error
  665. */
  666. public static function unsubscribe_user_from_session($session_id, $user_id) {
  667. $session_id = (int)$session_id;
  668. $user_id = (int)$user_id;
  669. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  670. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  671. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  672. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  673. $delete_sql = "DELETE FROM $tbl_session_rel_user WHERE id_session = '$session_id' AND id_user ='$user_id' AND relation_type<>".SESSION_RELATION_TYPE_RRHH."";
  674. Database::query($delete_sql);
  675. $return = Database::affected_rows();
  676. // Update number of users
  677. $update_sql = "UPDATE $tbl_session SET nbr_users= nbr_users - $return WHERE id='$session_id' ";
  678. Database::query($update_sql);
  679. // Get the list of courses related to this session
  680. $course_list = SessionManager::get_course_list_by_session_id($session_id);
  681. if(!empty($course_list)) {
  682. foreach($course_list as $course) {
  683. $course_code = $course['code'];
  684. // Delete user from course
  685. 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'");
  686. if(Database::affected_rows()) {
  687. // Update number of users in this relation
  688. Database::query("UPDATE $tbl_session_rel_course SET nbr_users=nbr_users - 1 WHERE id_session='$session_id' AND course_code='$course_code'");
  689. }
  690. }
  691. }
  692. return true;
  693. }
  694. /** Subscribes courses to the given session and optionally (default) unsubscribes previous users
  695. * @author Carlos Vargas from existing code
  696. * @param int Session ID
  697. * @param array List of courses IDs
  698. * @param bool Whether to unsubscribe existing users (true, default) or not (false)
  699. * @return void Nothing, or false on error
  700. **/
  701. public static function add_courses_to_session ($id_session, $course_list, $empty_courses=true) {
  702. // security checks
  703. if ($id_session!= strval(intval($id_session))) { return false; }
  704. //foreach($course_list as $intCourse){
  705. // if ($intCourse!= strval(intval($intCourse))) { return false; }
  706. //}
  707. // initialisation
  708. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  709. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  710. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  711. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  712. $tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
  713. // get general coach ID
  714. $id_coach = Database::query("SELECT id_coach FROM $tbl_session WHERE id=$id_session");
  715. $id_coach = Database::fetch_array($id_coach);
  716. $id_coach = $id_coach[0];
  717. // get list of courses subscribed to this session
  718. $rs = Database::query("SELECT course_code FROM $tbl_session_rel_course WHERE id_session=$id_session");
  719. $existingCourses = Database::store_result($rs);
  720. $nbr_courses=count($existingCourses);
  721. // get list of users subscribed to this session
  722. $sql="SELECT id_user
  723. FROM $tbl_session_rel_user
  724. WHERE id_session = $id_session AND relation_type<>".SESSION_RELATION_TYPE_RRHH."";
  725. $result=Database::query($sql);
  726. $user_list=Database::store_result($result);
  727. // remove existing courses from the session
  728. if ($empty_courses===true) {
  729. foreach ($existingCourses as $existingCourse) {
  730. if (!in_array($existingCourse['course_code'], $course_list)){
  731. Database::query("DELETE FROM $tbl_session_rel_course WHERE course_code='".$existingCourse['course_code']."' AND id_session=$id_session");
  732. Database::query("DELETE FROM $tbl_session_rel_course_rel_user WHERE course_code='".$existingCourse['course_code']."' AND id_session=$id_session");
  733. }
  734. }
  735. $nbr_courses=0;
  736. }
  737. // Pass through the courses list we want to add to the session
  738. foreach ($course_list as $enreg_course) {
  739. $enreg_course = Database::escape_string($enreg_course);
  740. $exists = false;
  741. // check if the course we want to add is already subscribed
  742. foreach ($existingCourses as $existingCourse) {
  743. if ($enreg_course == $existingCourse['course_code']) {
  744. $exists=true;
  745. }
  746. }
  747. if (!$exists) {
  748. //if the course isn't subscribed yet
  749. $sql_insert_rel_course= "INSERT INTO $tbl_session_rel_course (id_session,course_code) VALUES ('$id_session','$enreg_course')";
  750. Database::query($sql_insert_rel_course);
  751. //We add the current course in the existing courses array, to avoid adding another time the current course
  752. $existingCourses[]=array('course_code'=>$enreg_course);
  753. $nbr_courses++;
  754. // subscribe all the users from the session to this course inside the session
  755. $nbr_users=0;
  756. foreach ($user_list as $enreg_user) {
  757. $enreg_user_id = Database::escape_string($enreg_user['id_user']);
  758. $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')";
  759. Database::query($sql_insert);
  760. if (Database::affected_rows()) {
  761. $nbr_users++;
  762. }
  763. }
  764. Database::query("UPDATE $tbl_session_rel_course SET nbr_users=$nbr_users WHERE id_session='$id_session' AND course_code='$enreg_course'");
  765. }
  766. }
  767. Database::query("UPDATE $tbl_session SET nbr_courses=$nbr_courses WHERE id='$id_session'");
  768. }
  769. /**
  770. * Unsubscribe course from a session
  771. *
  772. * @param int Session id
  773. * @param int Course id
  774. * @return bool True in case of success, false otherwise
  775. */
  776. public static function unsubscribe_course_from_session($session_id, $course_id) {
  777. $session_id = (int)$session_id;
  778. $course_id = (int)$course_id;
  779. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  780. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  781. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  782. // Get course code
  783. $course_code = CourseManager::get_course_code_from_course_id($course_id);
  784. if($course_code == 0) {
  785. return false;
  786. }
  787. // Unsubscribe course
  788. Database::query("DELETE FROM $tbl_session_rel_course WHERE course_code='$course_code' AND id_session='$session_id'");
  789. $nb_affected = Database::affected_rows();
  790. Database::query("DELETE FROM $tbl_session_rel_course_rel_user WHERE course_code='$course_code' AND id_session='$session_id'");
  791. if($nb_affected > 0) {
  792. // Update number of courses in the session
  793. Database::query("UPDATE $tbl_session SET nbr_courses= nbr_courses + $nb_affected WHERE id='$session_id' ");
  794. return true;
  795. } else {
  796. return false;
  797. }
  798. }
  799. /**
  800. * Creates a new extra field for a given session
  801. * @param string Field's internal variable name
  802. * @param int Field's type
  803. * @param string Field's language var name
  804. * @return int new extra field id
  805. */
  806. public static function create_session_extra_field ($fieldvarname, $fieldtype, $fieldtitle) {
  807. // database table definition
  808. $t_sf = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  809. $fieldvarname = Database::escape_string($fieldvarname);
  810. $fieldtitle = Database::escape_string($fieldtitle);
  811. $fieldtype = (int)$fieldtype;
  812. $time = time();
  813. $sql_field = "SELECT id FROM $t_sf WHERE field_variable = '$fieldvarname'";
  814. $res_field = Database::query($sql_field);
  815. $r_field = Database::fetch_row($res_field);
  816. if (Database::num_rows($res_field)>0) {
  817. $field_id = $r_field[0];
  818. } else {
  819. // save new fieldlabel into course_field table
  820. $sql = "SELECT MAX(field_order) FROM $t_sf";
  821. $res = Database::query($sql);
  822. $order = 0;
  823. if (Database::num_rows($res)>0) {
  824. $row = Database::fetch_row($res);
  825. $order = $row[0]+1;
  826. }
  827. $sql = "INSERT INTO $t_sf
  828. SET field_type = '$fieldtype',
  829. field_variable = '$fieldvarname',
  830. field_display_text = '$fieldtitle',
  831. field_order = '$order',
  832. tms = FROM_UNIXTIME($time)";
  833. $result = Database::query($sql);
  834. $field_id=Database::insert_id();
  835. }
  836. return $field_id;
  837. }
  838. /**
  839. * Update an extra field value for a given session
  840. * @param integer Course ID
  841. * @param string Field variable name
  842. * @param string Field value
  843. * @return boolean true if field updated, false otherwise
  844. */
  845. public static function update_session_extra_field_value ($session_id,$fname,$fvalue='') {
  846. $t_sf = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  847. $t_sfv = Database::get_main_table(TABLE_MAIN_SESSION_FIELD_VALUES);
  848. $fname = Database::escape_string($fname);
  849. $session_id = (int)$session_id;
  850. $fvalues = '';
  851. if(is_array($fvalue))
  852. {
  853. foreach($fvalue as $val)
  854. {
  855. $fvalues .= Database::escape_string($val).';';
  856. }
  857. if(!empty($fvalues))
  858. {
  859. $fvalues = substr($fvalues,0,-1);
  860. }
  861. }
  862. else
  863. {
  864. $fvalues = Database::escape_string($fvalue);
  865. }
  866. $sqlsf = "SELECT * FROM $t_sf WHERE field_variable='$fname'";
  867. $ressf = Database::query($sqlsf);
  868. if(Database::num_rows($ressf)==1)
  869. { //ok, the field exists
  870. // Check if enumerated field, if the option is available
  871. $rowsf = Database::fetch_array($ressf);
  872. $tms = time();
  873. $sqlsfv = "SELECT * FROM $t_sfv WHERE session_id = '$session_id' AND field_id = '".$rowsf['id']."' ORDER BY id";
  874. $ressfv = Database::query($sqlsfv);
  875. $n = Database::num_rows($ressfv);
  876. if ($n>1) {
  877. //problem, we already have to values for this field and user combination - keep last one
  878. while($rowsfv = Database::fetch_array($ressfv))
  879. {
  880. if($n > 1)
  881. {
  882. $sqld = "DELETE FROM $t_sfv WHERE id = ".$rowsfv['id'];
  883. $resd = Database::query($sqld);
  884. $n--;
  885. }
  886. $rowsfv = Database::fetch_array($ressfv);
  887. if($rowsfv['field_value'] != $fvalues)
  888. {
  889. $sqlu = "UPDATE $t_sfv SET field_value = '$fvalues', tms = FROM_UNIXTIME($tms) WHERE id = ".$rowsfv['id'];
  890. $resu = Database::query($sqlu);
  891. return($resu?true:false);
  892. }
  893. return true;
  894. }
  895. } else if ($n==1) {
  896. //we need to update the current record
  897. $rowsfv = Database::fetch_array($ressfv);
  898. if($rowsfv['field_value'] != $fvalues)
  899. {
  900. $sqlu = "UPDATE $t_sfv SET field_value = '$fvalues', tms = FROM_UNIXTIME($tms) WHERE id = ".$rowsfv['id'];
  901. //error_log('UM::update_extra_field_value: '.$sqlu);
  902. $resu = Database::query($sqlu);
  903. return($resu?true:false);
  904. }
  905. return true;
  906. } else {
  907. $sqli = "INSERT INTO $t_sfv (session_id,field_id,field_value,tms) " .
  908. "VALUES ('$session_id',".$rowsf['id'].",'$fvalues',FROM_UNIXTIME($tms))";
  909. //error_log('UM::update_extra_field_value: '.$sqli);
  910. $resi = Database::query($sqli);
  911. return($resi?true:false);
  912. }
  913. } else {
  914. return false; //field not found
  915. }
  916. }
  917. /**
  918. * Checks the relationship between a session and a course.
  919. * @param int $session_id
  920. * @param int $course_id
  921. * @return bool Returns TRUE if the session and the course are related, FALSE otherwise.
  922. * */
  923. public static function relation_session_course_exist ($session_id, $course_id) {
  924. $tbl_session_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  925. $return_value = false;
  926. $sql= "SELECT course_code FROM $tbl_session_course WHERE id_session = ".Database::escape_string($session_id)." AND course_code = '".Database::escape_string($course_id)."'";
  927. $result = Database::query($sql);
  928. $num = Database::num_rows($result);
  929. if ($num>0) {
  930. $return_value = true;
  931. }
  932. return $return_value;
  933. }
  934. /**
  935. * Get the session information by name
  936. * @param string session name
  937. * @return mixed false if the session does not exist, array if the session exist
  938. * */
  939. public static function get_session_by_name ($session_name) {
  940. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  941. $sql = 'SELECT id, id_coach, date_start, date_end FROM '.$tbl_session.' WHERE name="'.Database::escape_string($session_name).'"';
  942. $result = Database::query($sql);
  943. $num = Database::num_rows($result);
  944. if ($num>0){
  945. return Database::fetch_array($result);
  946. } else {
  947. return false;
  948. }
  949. }
  950. /**
  951. * Create a session category
  952. * @author Jhon Hinojosa <jhon.hinojosa@dokeos.com>, from existing code
  953. * @param string name
  954. * @param integer year_start
  955. * @param integer month_start
  956. * @param integer day_start
  957. * @param integer year_end
  958. * @param integer month_end
  959. * @param integer day_end
  960. * @return $id_session;
  961. **/
  962. public static function create_category_session($sname,$syear_start,$smonth_start,$sday_start,$syear_end,$smonth_end, $sday_end){
  963. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  964. $name= trim($sname);
  965. $year_start= intval($syear_start);
  966. $month_start=intval($smonth_start);
  967. $day_start=intval($sday_start);
  968. $year_end=intval($syear_end);
  969. $month_end=intval($smonth_end);
  970. $day_end=intval($sday_end);
  971. $date_start = "$year_start-".(($month_start < 10)?"0$month_start":$month_start)."-".(($day_start < 10)?"0$day_start":$day_start);
  972. $date_end = "$year_end-".(($month_end < 10)?"0$month_end":$month_end)."-".(($day_end < 10)?"0$day_end":$day_end);
  973. if (empty($name)) {
  974. $msg=get_lang('SessionCategoryNameIsRequired');
  975. return $msg;
  976. } elseif (!$month_start || !$day_start || !$year_start || !checkdate($month_start,$day_start,$year_start)) {
  977. $msg=get_lang('InvalidStartDate');
  978. return $msg;
  979. } elseif (!$month_end && !$day_end && !$year_end) {
  980. $date_end = "null";
  981. } elseif (!$month_end || !$day_end || !$year_end || !checkdate($month_end,$day_end,$year_end)) {
  982. $msg=get_lang('InvalidEndDate');
  983. return $msg;
  984. } elseif($date_start >= $date_end) {
  985. $msg=get_lang('StartDateShouldBeBeforeEndDate');
  986. return $msg;
  987. }
  988. $access_url_id = api_get_current_access_url_id();
  989. $sql = "INSERT INTO $tbl_session_category (name, date_start, date_end, access_url_id)
  990. VALUES('".Database::escape_string($name)."','$date_start','$date_end', '$access_url_id')";
  991. Database::query($sql);
  992. $id_session = Database::insert_id();
  993. // Add event to system log
  994. $user_id = api_get_user_id();
  995. event_system(LOG_SESSION_CATEGORY_CREATE, LOG_SESSION_CATEGORY_ID, $id_session, api_get_utc_datetime(), $user_id);
  996. return $id_session;
  997. }
  998. /**
  999. * Edit a sessions categories
  1000. * @author Jhon Hinojosa <jhon.hinojosa@dokeos.com>,from existing code
  1001. * @param integer id
  1002. * @param string name
  1003. * @param integer year_start
  1004. * @param integer month_start
  1005. * @param integer day_start
  1006. * @param integer year_end
  1007. * @param integer month_end
  1008. * @param integer day_end
  1009. * @return $id;
  1010. * The parameter id is a primary key
  1011. **/
  1012. public static function edit_category_session($id, $sname,$syear_start,$smonth_start,$sday_start,$syear_end,$smonth_end, $sday_end){
  1013. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  1014. $name= trim($sname);
  1015. $year_start= intval($syear_start);
  1016. $month_start=intval($smonth_start);
  1017. $day_start=intval($sday_start);
  1018. $year_end=intval($syear_end);
  1019. $month_end=intval($smonth_end);
  1020. $day_end=intval($sday_end);
  1021. $id=intval($id);
  1022. $date_start = "$year_start-".(($month_start < 10)?"0$month_start":$month_start)."-".(($day_start < 10)?"0$day_start":$day_start);
  1023. $date_end = "$year_end-".(($month_end < 10)?"0$month_end":$month_end)."-".(($day_end < 10)?"0$day_end":$day_end);
  1024. if (empty($name)) {
  1025. $msg=get_lang('SessionCategoryNameIsRequired');
  1026. return $msg;
  1027. } elseif (!$month_start || !$day_start || !$year_start || !checkdate($month_start,$day_start,$year_start)) {
  1028. $msg=get_lang('InvalidStartDate');
  1029. return $msg;
  1030. } elseif (!$month_end && !$day_end && !$year_end) {
  1031. $date_end = null;
  1032. } elseif (!$month_end || !$day_end || !$year_end || !checkdate($month_end,$day_end,$year_end)) {
  1033. $msg=get_lang('InvalidEndDate');
  1034. return $msg;
  1035. } elseif($date_start >= $date_end) {
  1036. $msg=get_lang('StartDateShouldBeBeforeEndDate');
  1037. return $msg;
  1038. }
  1039. if ( $date_end <> null ) {
  1040. $sql = "UPDATE $tbl_session_category SET name = '".Database::escape_string($name)."', date_start = '$date_start' ".
  1041. ", date_end = '$date_end' WHERE id= '".$id."' ";
  1042. } else {
  1043. $sql = "UPDATE $tbl_session_category SET name = '".Database::escape_string($name)."', date_start = '$date_start' ".
  1044. ", date_end = NULL WHERE id= '".$id."' ";
  1045. }
  1046. $result = Database::query($sql);
  1047. return ($result? true:false);
  1048. }
  1049. /**
  1050. * Delete sessions categories
  1051. * @author Jhon Hinojosa <jhon.hinojosa@dokeos.com>, from existing code
  1052. * @param array id_checked
  1053. * @param bool include delete session
  1054. * @param bool optional, true if the function is called by a webservice, false otherwise.
  1055. * @return void Nothing, or false on error
  1056. * The parameters is a array to delete sessions
  1057. **/
  1058. public static function delete_session_category($id_checked, $delete_session = false,$from_ws = false){
  1059. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  1060. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  1061. if (is_array($id_checked)) {
  1062. $id_checked = Database::escape_string(implode(',',$id_checked));
  1063. } else {
  1064. $id_checked = intval($id_checked);
  1065. }
  1066. //Setting session_category_id to 0
  1067. $sql = "UPDATE $tbl_session SET session_category_id = 0 WHERE session_category_id IN (".$id_checked.")";
  1068. Database::query($sql);
  1069. $sql = "SELECT id FROM $tbl_session WHERE session_category_id IN (".$id_checked.")";
  1070. $result = @Database::query($sql);
  1071. while ($rows = Database::fetch_array($result)) {
  1072. $session_id = $rows['id'];
  1073. if ($delete_session) {
  1074. if ($from_ws) {
  1075. SessionManager::delete_session($session_id,true);
  1076. } else {
  1077. SessionManager::delete_session($session_id);
  1078. }
  1079. }
  1080. }
  1081. $sql = "DELETE FROM $tbl_session_category WHERE id IN (".$id_checked.")";
  1082. $rs = @Database::query($sql);
  1083. $result = Database::affected_rows();
  1084. // Add event to system log
  1085. $user_id = api_get_user_id();
  1086. event_system(LOG_SESSION_CATEGORY_DELETE, LOG_SESSION_CATEGORY_ID, $id_checked, api_get_utc_datetime(), $user_id);
  1087. // delete extra session fields where field variable is "PERIODO"
  1088. $t_sf = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  1089. $t_sfv = Database::get_main_table(TABLE_MAIN_SESSION_FIELD_VALUES);
  1090. $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' ";
  1091. $rs_field = Database::query($sql);
  1092. $field_id = 0;
  1093. if (Database::num_rows($rs_field) > 0) {
  1094. $row_field = Database::fetch_row($rs_field);
  1095. $field_id = $row_field[0];
  1096. $sql_delete_sfv = "DELETE FROM $t_sfv WHERE session_id = '$id_checked' AND field_id = '$field_id'";
  1097. $rs_delete_sfv = Database::query($sql_delete_sfv);
  1098. }
  1099. $sql = "SELECT * FROM $t_sfv WHERE field_id = '$field_id' ";
  1100. $rs_field_id = Database::query($sql);
  1101. if (Database::num_rows($rs_field_id) == 0) {
  1102. $sql_delete_sf = "DELETE FROM $t_sf WHERE id = '$field_id'";
  1103. $rs_delete_sf = Database::query($sql_delete_sf);
  1104. }
  1105. return true;
  1106. }
  1107. /**
  1108. * Get a list of sessions of which the given conditions match with an = 'cond'
  1109. * @param array $conditions a list of condition (exemple : array('status =' =>STUDENT) or array('s.name LIKE' => "%$needle%")
  1110. * @param array $order_by a list of fields on which sort
  1111. * @return array An array with all sessions of the platform.
  1112. * @todo optional course code parameter, optional sorting parameters...
  1113. */
  1114. public static function get_sessions_list($conditions = array(), $order_by = array()) {
  1115. $session_table = Database::get_main_table(TABLE_MAIN_SESSION);
  1116. $session_category_table = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  1117. $user_table = Database::get_main_table(TABLE_MAIN_USER);
  1118. $table_access_url_rel_session = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  1119. $access_url_id = api_get_current_access_url_id();
  1120. $return_array = array();
  1121. $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
  1122. FROM $session_table s
  1123. INNER JOIN $user_table u ON s.id_coach = u.user_id
  1124. INNER JOIN $table_access_url_rel_session ar ON ar.session_id = s.id
  1125. LEFT JOIN $session_category_table sc ON s.session_category_id = sc.id
  1126. WHERE ar.access_url_id = $access_url_id ";
  1127. if (count($conditions)>0) {
  1128. $sql_query .= ' AND ';
  1129. foreach ($conditions as $field=>$value) {
  1130. $field = Database::escape_string($field);
  1131. $value = Database::escape_string($value);
  1132. $sql_query .= $field." '".$value."'";
  1133. }
  1134. }
  1135. if (count($order_by)>0) {
  1136. $sql_query .= ' ORDER BY '.Database::escape_string(implode(',',$order_by));
  1137. }
  1138. //echo $sql_query;
  1139. $sql_result = Database::query($sql_query);
  1140. if (Database::num_rows($sql_result)>0) {
  1141. while ($result = Database::fetch_array($sql_result)) {
  1142. $return_array[$result['id']] = $result;
  1143. }
  1144. }
  1145. return $return_array;
  1146. }
  1147. /**
  1148. * Get the session category information by id
  1149. * @param string session category ID
  1150. * @return mixed false if the session category does not exist, array if the session category exists
  1151. */
  1152. public static function get_session_category ($id) {
  1153. $id = intval($id);
  1154. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  1155. $sql = "SELECT id, name, date_start, date_end FROM $tbl_session_category WHERE id= $id";
  1156. $result = Database::query($sql);
  1157. $num = Database::num_rows($result);
  1158. if ($num>0){
  1159. return Database::fetch_array($result);
  1160. } else {
  1161. return false;
  1162. }
  1163. }
  1164. /**
  1165. * Get all session categories (filter by access_url_id)
  1166. * @return mixed false if the session category does not exist, array if the session category exists
  1167. */
  1168. public static function get_all_session_category() {
  1169. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  1170. $id = api_get_current_access_url_id();
  1171. $sql = 'SELECT * FROM '.$tbl_session_category.' WHERE access_url_id ="'.$id.'" ORDER BY name ASC';
  1172. $result = Database::query($sql);
  1173. if (Database::num_rows($result) > 0 ){
  1174. $data = Database::store_result($result,'ASSOC');
  1175. return $data;
  1176. } else {
  1177. return false;
  1178. }
  1179. }
  1180. /**
  1181. * Assign a coach to course in session with status = 2
  1182. * @param int - user id
  1183. * @param int - session id
  1184. * @param string - course code
  1185. * @param bool - optional, if is true the user don't be a coach now, otherwise it'll assign a coach
  1186. * @return bool true if there are affected rows, otherwise false
  1187. */
  1188. public static function set_coach_to_course_session($user_id, $session_id = 0, $course_code = '',$nocoach = false) {
  1189. // Definition of variables
  1190. $user_id = intval($user_id);
  1191. if (!empty($session_id)) {
  1192. $session_id = intval($session_id);
  1193. } else {
  1194. $session_id = api_get_session_id();
  1195. }
  1196. if (!empty($course_code)) {
  1197. $course_code = Database::escape_string($course_code);
  1198. } else {
  1199. $course_code = api_get_course_id();
  1200. }
  1201. // definitios of tables
  1202. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  1203. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  1204. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  1205. // check if user is a teacher
  1206. $sql= "SELECT * FROM $tbl_user WHERE status='1' AND user_id = '$user_id'";
  1207. $rs_check_user = Database::query($sql);
  1208. if (Database::num_rows($rs_check_user) > 0) {
  1209. if ($nocoach) {
  1210. // check if user_id exits int session_rel_user
  1211. $sql = "SELECT id_user FROM $tbl_session_rel_user WHERE id_session = '$session_id' AND id_user = '$user_id'";
  1212. $res = Database::query($sql);
  1213. if (Database::num_rows($res) > 0) {
  1214. // The user don't be a coach now
  1215. $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' ";
  1216. $rs_update = Database::query($sql);
  1217. if (Database::affected_rows() > 0) return true;
  1218. else return false;
  1219. } else {
  1220. // The user don't be a coach now
  1221. $sql = "DELETE FROM $tbl_session_rel_course_rel_user WHERE id_session = '$session_id' AND course_code = '$course_code' AND id_user = '$user_id' ";
  1222. $rs_delete = Database::query($sql);
  1223. if (Database::affected_rows() > 0) return true;
  1224. else return false;
  1225. }
  1226. } else {
  1227. // Assign user like a coach to course
  1228. // First check if the user is registered in the course
  1229. $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'";
  1230. $rs_check = Database::query($sql);
  1231. //Then update or insert
  1232. if (Database::num_rows($rs_check) > 0) {
  1233. $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' ";
  1234. $rs_update = Database::query($sql);
  1235. if (Database::affected_rows() > 0) return true;
  1236. else return false;
  1237. } else {
  1238. $sql = " INSERT INTO $tbl_session_rel_course_rel_user(id_session, course_code, id_user, status) VALUES('$session_id', '$course_code', '$user_id', 2)";
  1239. $rs_insert = Database::query($sql);
  1240. if (Database::affected_rows() > 0) return true;
  1241. else return false;
  1242. }
  1243. }
  1244. } else {
  1245. return false;
  1246. }
  1247. }
  1248. /**
  1249. * Subscribes sessions to human resource manager (Dashboard feature)
  1250. * @param int Human Resource Manager id
  1251. * @param array Sessions id
  1252. * @param int Relation type
  1253. **/
  1254. public static function suscribe_sessions_to_hr_manager($hr_manager_id,$sessions_list) {
  1255. global $_configuration;
  1256. // Database Table Definitions
  1257. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  1258. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  1259. $tbl_session_rel_course_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  1260. $tbl_session_rel_access_url = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  1261. $hr_manager_id = intval($hr_manager_id);
  1262. $affected_rows = 0;
  1263. //Deleting assigned sessions to hrm_id
  1264. if ($_configuration['multiple_access_urls']) {
  1265. $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()."";
  1266. } else {
  1267. $sql = "SELECT id_session FROM $tbl_session_rel_user s WHERE id_user = $hr_manager_id AND relation_type=".SESSION_RELATION_TYPE_RRHH."";
  1268. }
  1269. $result = Database::query($sql);
  1270. if (Database::num_rows($result) > 0) {
  1271. while ($row = Database::fetch_array($result)) {
  1272. $sql = "DELETE FROM $tbl_session_rel_user WHERE id_session = {$row['id_session']} AND id_user = $hr_manager_id AND relation_type=".SESSION_RELATION_TYPE_RRHH." ";
  1273. Database::query($sql);
  1274. }
  1275. }
  1276. /*
  1277. //Deleting assigned courses in sessions to hrm_id
  1278. $sql = "SELECT * FROM $tbl_session_rel_course_user WHERE id_user = $hr_manager_id ";
  1279. $result = Database::query($sql);
  1280. if (Database::num_rows($result) > 0) {
  1281. $sql = "DELETE FROM $tbl_session_rel_course_user WHERE id_user = $hr_manager_id ";
  1282. Database::query($sql);
  1283. }
  1284. */
  1285. // inserting new sessions list
  1286. if (is_array($sessions_list)) {
  1287. foreach ($sessions_list as $session_id) {
  1288. $session_id = intval($session_id);
  1289. $insert_sql = "INSERT IGNORE INTO $tbl_session_rel_user(id_session, id_user, relation_type) VALUES($session_id, $hr_manager_id, '".SESSION_RELATION_TYPE_RRHH."')";
  1290. Database::query($insert_sql);
  1291. $affected_rows = Database::affected_rows();
  1292. }
  1293. }
  1294. return $affected_rows;
  1295. }
  1296. /**
  1297. * Get sessions followed by human resources manager
  1298. * @param int Human resources manager or Session admin id
  1299. * @return array sessions
  1300. */
  1301. public static function get_sessions_followed_by_drh($hr_manager_id) {
  1302. global $_configuration;
  1303. // Database Table Definitions
  1304. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  1305. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  1306. $tbl_session_rel_access_url = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  1307. $hr_manager_id = intval($hr_manager_id);
  1308. $assigned_sessions_to_hrm = array();
  1309. if (api_is_multiple_url_enabled()) {
  1310. $sql = "SELECT * FROM $tbl_session s INNER JOIN $tbl_session_rel_user sru ON (sru.id_session = s.id) LEFT JOIN $tbl_session_rel_access_url a ON (s.id = a.session_id)
  1311. WHERE sru.id_user = '$hr_manager_id' AND sru.relation_type = '".SESSION_RELATION_TYPE_RRHH."' AND access_url_id = ".api_get_current_access_url_id()."";
  1312. } else {
  1313. $sql = "SELECT * FROM $tbl_session s
  1314. 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."' ";
  1315. }
  1316. $rs_assigned_sessions = Database::query($sql);
  1317. if (Database::num_rows($rs_assigned_sessions) > 0) {
  1318. while ($row_assigned_sessions = Database::fetch_array($rs_assigned_sessions)) {
  1319. $assigned_sessions_to_hrm[$row_assigned_sessions['id']] = $row_assigned_sessions;
  1320. }
  1321. }
  1322. return $assigned_sessions_to_hrm;
  1323. }
  1324. /**
  1325. * Gets the list of courses by session filtered by access_url
  1326. * @param int session id
  1327. * @return array list of courses
  1328. */
  1329. public static function get_course_list_by_session_id ($session_id) {
  1330. $tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
  1331. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  1332. // select the courses
  1333. $sql = "SELECT * FROM $tbl_course c INNER JOIN $tbl_session_rel_course src ON c.code = src.course_code
  1334. WHERE src.id_session = '$session_id' ORDER BY title;";
  1335. $result = Database::query($sql);
  1336. $num_rows = Database::num_rows($result);
  1337. $courses = array();
  1338. if ($num_rows > 0) {
  1339. while ($row = Database::fetch_array($result,'ASSOC')) {
  1340. $courses[$row['id']] = $row;
  1341. }
  1342. }
  1343. return $courses;
  1344. }
  1345. /**
  1346. * Get the session id based on the original id and field name in the extra fields. Returns 0 if session was not found
  1347. *
  1348. * @param string Original session id
  1349. * @param string Original field name
  1350. * @return int Session id
  1351. */
  1352. public static function get_session_id_from_original_id($original_session_id_value, $original_session_id_name) {
  1353. $t_sfv = Database::get_main_table(TABLE_MAIN_SESSION_FIELD_VALUES);
  1354. $table_field = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  1355. $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'";
  1356. $res_session = Database::query($sql_session);
  1357. $row = Database::fetch_object($res_session);
  1358. if ($row) {
  1359. return $row->session_id;
  1360. } else {
  1361. return 0;
  1362. }
  1363. }
  1364. /**
  1365. * Get users by session
  1366. * @param int session id
  1367. * @param int filter by status
  1368. * @return array a list with an user list
  1369. */
  1370. public static function get_users_by_session($id, $with_status = null) {
  1371. if (empty($id)) {
  1372. return array();
  1373. }
  1374. $id = intval($id);
  1375. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  1376. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  1377. $sql = "SELECT $tbl_user.user_id, lastname, firstname, username
  1378. FROM $tbl_user INNER JOIN $tbl_session_rel_user
  1379. ON $tbl_user.user_id = $tbl_session_rel_user.id_user
  1380. AND $tbl_session_rel_user.id_session = $id";
  1381. if (isset($with_status) && $with_status != '') {
  1382. $with_status = intval($with_status);
  1383. $sql .= " WHERE relation_type = $with_status ";
  1384. }
  1385. $result = Database::query($sql);
  1386. while ($row = Database::fetch_array($result,'ASSOC')) {
  1387. $return_array[] = $row;
  1388. }
  1389. return $return_array;
  1390. }
  1391. /**
  1392. * The general coach (field: session.id_coach)
  1393. * @param int user id
  1394. */
  1395. public static function get_sessions_by_general_coach($user_id) {
  1396. $session_table = Database::get_main_table(TABLE_MAIN_SESSION);
  1397. $user_id = intval($user_id);
  1398. // session where we are general coach
  1399. $sql = "SELECT DISTINCT *
  1400. FROM $session_table
  1401. WHERE id_coach = $user_id";
  1402. if (api_is_multiple_url_enabled()) {
  1403. $tbl_session_rel_access_url= Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  1404. $access_url_id = api_get_current_access_url_id();
  1405. if ($access_url_id != -1) {
  1406. $sql = 'SELECT DISTINCT session.*
  1407. FROM '.$session_table.' session INNER JOIN '.$tbl_session_rel_access_url.' session_rel_url
  1408. ON (session.id = session_rel_url.session_id)
  1409. WHERE id_coach = '.$user_id.' AND access_url_id = '.$access_url_id;
  1410. }
  1411. }
  1412. $sql .= ' ORDER by name';
  1413. $result = Database::query($sql);
  1414. return Database::store_result($result, 'ASSOC');
  1415. }
  1416. public static function get_sessions_by_coach($user_id) {
  1417. $session_table = Database::get_main_table(TABLE_MAIN_SESSION);
  1418. return Database::select('*', $session_table, array('where'=>array('id_coach = ?'=>$user_id)));
  1419. }
  1420. public static function get_user_status_in_course_session($user_id, $course_code, $session_id) {
  1421. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  1422. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  1423. $sql = "SELECT session_rcru.status
  1424. FROM $tbl_session_rel_course_rel_user session_rcru, $tbl_user user
  1425. WHERE session_rcru.id_user = user.user_id AND
  1426. session_rcru.id_session = '".intval($session_id)."' AND
  1427. session_rcru.course_code ='".Database::escape_string($course_code)."' AND
  1428. user.user_id = ".intval($user_id);
  1429. $result = Database::query($sql);
  1430. $status = false;
  1431. if (Database::num_rows($result)) {
  1432. $status = Database::fetch_row($result);
  1433. $status = $status['0'];
  1434. }
  1435. return $status;
  1436. }
  1437. /**
  1438. * Gets user status within a session
  1439. * @param $user_id
  1440. * @param $course_code
  1441. * @param $session_id
  1442. * @return unknown_type
  1443. */
  1444. public static function get_user_status_in_session($user_id, $course_code, $session_id) {
  1445. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  1446. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  1447. $sql = "SELECT session_rcru.status
  1448. FROM $tbl_session_rel_course_rel_user session_rcru, $tbl_user user
  1449. WHERE session_rcru.id_user = user.user_id AND
  1450. session_rcru.id_session = '".intval($session_id)."' AND
  1451. session_rcru.course_code ='".Database::escape_string($course_code)."' AND
  1452. user.user_id = ".intval($user_id);
  1453. $result = Database::query($sql);
  1454. $status = false;
  1455. if (Database::num_rows($result)) {
  1456. $status = Database::fetch_row($result);
  1457. $status = $status['0'];
  1458. }
  1459. return $status;
  1460. }
  1461. function get_all_sessions_by_promotion($id) {
  1462. $t = Database::get_main_table(TABLE_MAIN_SESSION);
  1463. return Database::select('*', $t, array('where'=>array('promotion_id = ?'=>$id)));
  1464. }
  1465. function suscribe_sessions_to_promotion($promotion_id, $list) {
  1466. $t = Database::get_main_table(TABLE_MAIN_SESSION);
  1467. $params = array();
  1468. $params['promotion_id'] = 0;
  1469. Database::update($t, $params, array('promotion_id = ?'=>$promotion_id));
  1470. $params['promotion_id'] = $promotion_id;
  1471. if (!empty($list)) {
  1472. foreach ($list as $session_id) {
  1473. $session_id= intval($session_id);
  1474. Database::update($t, $params, array('id = ?'=>$session_id));
  1475. }
  1476. }
  1477. }
  1478. /**
  1479. * Updates a session status
  1480. * @param int session id
  1481. * @param int status
  1482. */
  1483. public function set_session_status($session_id, $status) {
  1484. $t = Database::get_main_table(TABLE_MAIN_SESSION);
  1485. $params['visibility'] = $status;
  1486. Database::update($t, $params, array('id = ?'=>$session_id));
  1487. }
  1488. /**
  1489. * Copies a session with the same data to a new session.
  1490. * The new copy is not assigned to the same promotion. @see suscribe_sessions_to_promotions() for that
  1491. * @param int Session ID
  1492. * @param bool Whether to copy the relationship with courses
  1493. * @param bool Whether to copy the relationship with users
  1494. * @param bool New courses will be created
  1495. * @return int The new session ID on success, 0 otherwise
  1496. * @todo make sure the extra session fields are copied too
  1497. */
  1498. /**
  1499. * @param $id
  1500. * @param $copy_courses
  1501. * @param $copy_users
  1502. * @param $create_new_courses
  1503. * @param $set_exercises_lp_invisible
  1504. * @return unknown_type
  1505. */
  1506. public function copy_session($id, $copy_courses = true, $copy_users = true, $create_new_courses = false, $set_exercises_lp_invisible = false) {
  1507. $id = intval($id);
  1508. $s = self::fetch($id);
  1509. $s['year_start'] = substr($s['date_start'],0,4);
  1510. $s['month_start'] = substr($s['date_start'],5,2);
  1511. $s['day_start'] = substr($s['date_start'],8,2);
  1512. $s['year_end'] = substr($s['date_end'],0,4);
  1513. $s['month_end'] = substr($s['date_end'],5,2);
  1514. $s['day_end'] = substr($s['date_end'],8,2);
  1515. $consider_start = true;
  1516. if ($s['year_start'].'-'.$s['month_start'].'-'.$s['day_start'] == '0000-00-00') {
  1517. $consider_start = false;
  1518. }
  1519. $consider_end = true;
  1520. if ($s['year_end'].'-'.$s['month_end'].'-'.$s['day_end'] == '0000-00-00') {
  1521. $consider_end = false;
  1522. }
  1523. $sid = self::create_session($s['name'].' '.get_lang('Copy'),
  1524. $s['year_start'], $s['month_start'], $s['day_start'],
  1525. $s['year_end'],$s['month_end'],$s['day_end'],
  1526. $s['nb_days_acess_before_beginning'],$s['nb_days_acess_after_end'],
  1527. false,(int)$s['id_coach'], $s['session_category_id'],
  1528. (int)$s['visibility'],$consider_start, $consider_end, true);
  1529. if (!is_numeric($sid) || empty($sid)) {
  1530. return false;
  1531. }
  1532. if ($copy_courses) {
  1533. // Register courses from the original session to the new session
  1534. $courses = self::get_course_list_by_session_id($id);
  1535. $short_courses = $new_short_courses = array();
  1536. if (is_array($courses) && count($courses)>0) {
  1537. foreach ($courses as $course) {
  1538. $short_courses[] = $course;
  1539. }
  1540. }
  1541. $courses = null;
  1542. //We will copy the current courses of the session to new courses
  1543. if (!empty($short_courses)) {
  1544. if ($create_new_courses) {
  1545. //Just in case
  1546. if (function_exists('ini_set')) {
  1547. ini_set('memory_limit','256M');
  1548. ini_set('max_execution_time',0);
  1549. }
  1550. $params = array();
  1551. $params['skip_lp_dates'] = true;
  1552. foreach ($short_courses as $course_data) {
  1553. $course_info = CourseManager::copy_course_simple($course_data['title'].' '.get_lang('Copy'), $course_data['course_code'], $id, $sid, $params);
  1554. if ($course_info) {
  1555. //By default new elements are invisible
  1556. if ($set_exercises_lp_invisible) {
  1557. require_once api_get_path(SYS_CODE_PATH).'newscorm/learnpathList.class.php';
  1558. $list = new LearnpathList('', $course_info['code'], $sid);
  1559. $flat_list = $list->get_flat_list();
  1560. if (!empty($flat_list)) {
  1561. foreach($flat_list as $lp_id => $data) {
  1562. api_item_property_update($course_info, TOOL_LEARNPATH, $lp_id, 'invisible', api_get_user_id(), 0 ,0, 0, 0, $sid);
  1563. api_item_property_update($course_info, TOOL_LEARNPATH, $lp_id, 'invisible', api_get_user_id(), 0 ,0, 0, 0);
  1564. }
  1565. }
  1566. $quiz_table = Database::get_course_table(TABLE_QUIZ_TEST);
  1567. $course_id = $course_info['real_id'];
  1568. //@todo check this query
  1569. $sql = "UPDATE $quiz_table SET active = 0 WHERE c_id = $course_id ";
  1570. $result=Database::query($sql);
  1571. }
  1572. $new_short_courses[] = $course_info['code'];
  1573. }
  1574. }
  1575. } else {
  1576. foreach($short_courses as $course_data) {
  1577. $new_short_courses[] = $course_data['code'];
  1578. }
  1579. }
  1580. $short_courses = $new_short_courses;
  1581. $res = self::add_courses_to_session($sid, $short_courses, true);
  1582. $short_courses = null;
  1583. }
  1584. }
  1585. if ($copy_users) {
  1586. // Register users from the original session to the new session
  1587. $users = self::get_users_by_session($id);
  1588. $short_users = array();
  1589. if (is_array($users) && count($users)>0) {
  1590. foreach ($users as $user) {
  1591. $short_users[] = $user['user_id'];
  1592. }
  1593. }
  1594. $users = null;
  1595. //Subscribing in read only mode
  1596. $res = self::suscribe_users_to_session($sid, $short_users, SESSION_VISIBLE_READ_ONLY, true, false);
  1597. $short_users = null;
  1598. }
  1599. return $sid;
  1600. }
  1601. function user_is_general_coach($user_id, $session_id) {
  1602. $session_id = intval($session_id);
  1603. $user_id = intval($user_id);
  1604. $session_table = Database::get_main_table(TABLE_MAIN_SESSION);
  1605. $sql = "SELECT DISTINCT id
  1606. FROM $session_table
  1607. WHERE session.id_coach = '".$user_id."' AND id = '$session_id'";
  1608. $result = Database::query($sql);
  1609. if ($result && Database::num_rows($result)) {
  1610. return true;
  1611. }
  1612. return false;
  1613. }
  1614. /**
  1615. * Get the number of sessions
  1616. * @param int ID of the URL we want to filter on (optional)
  1617. * @return int Number of sessions
  1618. */
  1619. public function count_sessions($access_url_id=null) {
  1620. $session_table = Database::get_main_table(TABLE_MAIN_SESSION);
  1621. $access_url_rel_session_table = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  1622. $sql = "SELECT count(id) FROM $session_table s";
  1623. if (!empty($access_url_id) && $access_url_id == intval($access_url_id)) {
  1624. $sql .= ", $access_url_rel_session_table u ".
  1625. " WHERE s.id = u.session_id AND u.access_url_id = $access_url_id";
  1626. }
  1627. $res = Database::query($sql);
  1628. $row = Database::fetch_row($res);
  1629. return $row[0];
  1630. }
  1631. static function protect_session_edit($id) {
  1632. api_protect_admin_script(true);
  1633. $session_info = self::fetch($id);
  1634. if (!api_is_platform_admin() && api_get_setting('allow_session_admins_to_manage_all_sessions') != 'true') {
  1635. if ($session_info['session_admin_id'] != api_get_user_id()) {
  1636. api_not_allowed(true);
  1637. }
  1638. }
  1639. }
  1640. static function get_session_by_course($course_code) {
  1641. $table_session_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  1642. $table_session = Database::get_main_table(TABLE_MAIN_SESSION);
  1643. $course_code = Database::escape_string($course_code);
  1644. $sql = "SELECT name, s.id FROM $table_session_course sc INNER JOIN $table_session s ON (sc.id_session = s.id)
  1645. WHERE sc.course_code = '$course_code' ";
  1646. $result = Database::query($sql);
  1647. return Database::store_result($result);
  1648. }
  1649. static function get_sessions_by_user($user_id) {
  1650. $session_categories = UserManager::get_sessions_by_category($user_id);
  1651. $session_array = array();
  1652. if (!empty($session_categories)) {
  1653. foreach ($session_categories as $category) {
  1654. if (isset($category['sessions'])) {
  1655. foreach ($category['sessions'] as $session) {
  1656. $session_array[] = $session;
  1657. }
  1658. }
  1659. }
  1660. }
  1661. return $session_array;
  1662. }
  1663. }