sessionmanager.lib.php 92 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 '$today' < s.date_end) OR
  218. (s.nb_days_access_before_beginning > 0 AND DATEDIFF(s.date_start,'".$today."' ".") <= s.nb_days_access_before_beginning) OR
  219. (s.nb_days_access_after_end > 0 AND DATEDIFF('".$today."',s.date_end) <= s.nb_days_access_after_end) OR
  220. (s.date_start = '0000-00-00' AND s.date_end = '0000-00-00' ) OR
  221. (s.date_start <= '$today' AND '0000-00-00' = s.date_end) OR
  222. ('$today' < s.date_end AND '0000-00-00' = s.date_start)
  223. , 1, 0)
  224. as session_active,
  225. s.name,
  226. nbr_courses,
  227. nbr_users,
  228. s.date_start,
  229. s.date_end,
  230. $coach_name,
  231. sc.name as category_name,
  232. s.visibility,
  233. u.user_id,
  234. s.id";
  235. $limit = null;
  236. if (!empty($options['limit'])) {
  237. $limit = " LIMIT ".$options['limit'];
  238. }
  239. $query = "$select FROM $tbl_session s
  240. LEFT JOIN $tbl_session_category sc ON s.session_category_id = sc.id
  241. LEFT JOIN $tbl_user u ON s.id_coach = u.user_id
  242. $where $limit";
  243. global $_configuration;
  244. if ($_configuration['multiple_access_urls']) {
  245. $table_access_url_rel_session= Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  246. $access_url_id = api_get_current_access_url_id();
  247. if ($access_url_id != -1) {
  248. $where.= " AND ar.access_url_id = $access_url_id ";
  249. $query = " $select
  250. FROM $tbl_session s
  251. LEFT JOIN $tbl_session_category sc ON s.session_category_id = sc.id
  252. INNER JOIN $tbl_user u ON s.id_coach = u.user_id
  253. INNER JOIN $table_access_url_rel_session ar ON ar.session_id = s.id
  254. $where $limit";
  255. }
  256. }
  257. $query .= ") AS session_table";
  258. if (!empty($options['where'])) {
  259. $query .= ' WHERE '.$options['where'];
  260. }
  261. if (!empty($options['order'])) {
  262. $query .= " ORDER BY ".$options['order'];
  263. }
  264. //var_dump($query);
  265. $result = Database::query($query);
  266. $formatted_sessions = array();
  267. if (Database::num_rows($result)) {
  268. $sessions = Database::store_result($result);
  269. foreach ($sessions as $session) {
  270. $session['name'] = Display::url($session['name'], "resume_session.php?id_session=".$session['id']);
  271. $session['coach_name'] = Display::url($session['coach_name'], "user_information.php?user_id=".$session['user_id']);
  272. if ($session['date_start'] == '0000-00-00' && $session['date_end'] == '0000-00-00') {
  273. // $session['session_active'] = 1;
  274. }
  275. if ($session['session_active'] == 1) {
  276. $session['session_active'] = Display::return_icon('accept.png', get_lang('Active'), array(), ICON_SIZE_SMALL);
  277. } else {
  278. $session['session_active'] = Display::return_icon('error.png', get_lang('Inactive'), array(), ICON_SIZE_SMALL);
  279. }
  280. if ($session['date_start'] == '0000-00-00') {
  281. $session['date_start'] = '';
  282. }
  283. if ($session['date_end'] == '0000-00-00') {
  284. $session['date_end'] = '';
  285. }
  286. switch ($session['visibility']) {
  287. case SESSION_VISIBLE_READ_ONLY: //1
  288. $session['visibility'] = get_lang('ReadOnly');
  289. break;
  290. case SESSION_VISIBLE: //2
  291. $session['visibility'] = get_lang('Visible');
  292. break;
  293. case SESSION_INVISIBLE: //3
  294. $session['visibility'] = api_ucfirst(get_lang('Invisible'));
  295. break;
  296. }
  297. $formatted_sessions[] = $session;
  298. }
  299. }
  300. return $formatted_sessions;
  301. }
  302. /**
  303. * Creates a new course code based in given code
  304. *
  305. * @param string wanted code
  306. * <code>
  307. * $wanted_code = 'curse' if there are in the DB codes like curse1 curse2 the function will return: course3
  308. * if the course code doest not exist in the DB the same course code will be returned
  309. * </code>
  310. * @return string wanted unused code
  311. */
  312. function generate_nice_next_session_name($session_name) {
  313. $session_name_ok = !self::session_name_exists($session_name);
  314. if (!$session_name_ok) {
  315. $table = Database::get_main_table(TABLE_MAIN_SESSION);
  316. $session_name = Database::escape_string($session_name);
  317. $sql = "SELECT count(*) as count FROM $table WHERE name LIKE '$session_name%'";
  318. $result = Database::query($sql);
  319. if (Database::num_rows($result) > 0 ) {
  320. $row = Database::fetch_array($result);
  321. $count = $row['count'] + 1;
  322. $session_name = $session_name.'_'.$count;
  323. $result = self::session_name_exists($session_name);
  324. if (!$result) {
  325. return $session_name;
  326. }
  327. }
  328. return false;
  329. }
  330. return $session_name;
  331. }
  332. /**
  333. * Edit a session
  334. * @author Carlos Vargas from existing code
  335. * @param integer id
  336. * @param string name
  337. * @param integer year_start
  338. * @param integer month_start
  339. * @param integer day_start
  340. * @param integer year_end
  341. * @param integer month_end
  342. * @param integer day_end
  343. * @param integer nb_days_acess_before
  344. * @param integer nb_days_acess_after
  345. * @param integer nolimit
  346. * @param integer id_coach
  347. * @param integer id_session_category
  348. * @return $id;
  349. * The parameter id is a primary key
  350. **/
  351. public static function edit_session ($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) {
  352. global $_user;
  353. $name=trim(stripslashes($name));
  354. $year_start=intval($year_start);
  355. $month_start=intval($month_start);
  356. $day_start=intval($day_start);
  357. $year_end=intval($year_end);
  358. $month_end=intval($month_end);
  359. $day_end=intval($day_end);
  360. $id_coach= intval($id_coach);
  361. $nb_days_acess_before= intval($nb_days_acess_before);
  362. $nb_days_acess_after = intval($nb_days_acess_after);
  363. $id_session_category = intval($id_session_category);
  364. $id_visibility = intval($id_visibility);
  365. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  366. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  367. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  368. if (empty($nolimit)) {
  369. $date_start = "$year_start-".(($month_start < 10)?"0$month_start":$month_start)."-".(($day_start < 10)?"0$day_start":$day_start);
  370. $date_end = "$year_end-".(($month_end < 10)?"0$month_end":$month_end)."-".(($day_end < 10)?"0$day_end":$day_end);
  371. } else {
  372. $date_start = "0000-00-00";
  373. $date_end = "0000-00-00";
  374. $id_visibility = 1;//force read only
  375. }
  376. if (!empty($no_end_limit)) {
  377. $date_end = "0000-00-00";
  378. }
  379. if (empty($end_limit)) {
  380. $date_end ="0000-00-00";
  381. $id_visibility = 1;//force read only
  382. }
  383. if (empty($start_limit)) {
  384. $date_start ="0000-00-00";
  385. }
  386. if (empty($name)) {
  387. $msg=get_lang('SessionNameIsRequired');
  388. return $msg;
  389. } elseif (empty($id_coach)) {
  390. $msg=get_lang('CoachIsRequired');
  391. return $msg;
  392. } elseif (!empty($start_limit) && empty($nolimit) && (!$month_start || !$day_start || !$year_start || !checkdate($month_start,$day_start,$year_start))) {
  393. $msg=get_lang('InvalidStartDate');
  394. return $msg;
  395. } elseif (!empty($end_limit) && empty($nolimit) && (!$month_end || !$day_end || !$year_end || !checkdate($month_end,$day_end,$year_end))) {
  396. $msg=get_lang('InvalidEndDate');
  397. return $msg;
  398. } elseif (!empty($start_limit) && !empty($end_limit) && empty($nolimit) && $date_start >= $date_end) {
  399. $msg=get_lang('StartDateShouldBeBeforeEndDate');
  400. return $msg;
  401. } else {
  402. $rs = Database::query("SELECT id FROM $tbl_session WHERE name='".Database::escape_string($name)."'");
  403. $exists = false;
  404. while ($row = Database::fetch_array($rs)) {
  405. if($row['id']!=$id)
  406. $exists = true;
  407. }
  408. if ($exists) {
  409. $msg=get_lang('SessionNameAlreadyExists');
  410. return $msg;
  411. } else {
  412. $sql="UPDATE $tbl_session " .
  413. "SET name='".Database::escape_string($name)."',
  414. date_start='".$date_start."',
  415. date_end='".$date_end."',
  416. id_coach='".$id_coach."',
  417. nb_days_access_before_beginning = ".$nb_days_acess_before.",
  418. nb_days_access_after_end = ".$nb_days_acess_after.",
  419. session_category_id = ".$id_session_category." ,
  420. visibility= ".$id_visibility."
  421. WHERE id='$id'";
  422. Database::query($sql);
  423. return $id;
  424. }
  425. }
  426. }
  427. /**
  428. * Delete session
  429. * @author Carlos Vargas from existing code
  430. * @param array id_checked
  431. * @param boolean optional, true if the function is called by a webservice, false otherwise.
  432. * @return void Nothing, or false on error
  433. * The parameters is a array to delete sessions
  434. **/
  435. public static function delete_session($id_checked,$from_ws = false) {
  436. $tbl_session= Database::get_main_table(TABLE_MAIN_SESSION);
  437. $tbl_session_rel_course= Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  438. $tbl_session_rel_course_rel_user= Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  439. $tbl_session_rel_user= Database::get_main_table(TABLE_MAIN_SESSION_USER);
  440. $tbl_url_session = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  441. global $_user;
  442. if(is_array($id_checked)) {
  443. $id_checked = Database::escape_string(implode(',',$id_checked));
  444. } else {
  445. $id_checked = intval($id_checked);
  446. }
  447. if (!api_is_platform_admin() && !$from_ws) {
  448. $sql = 'SELECT session_admin_id FROM '.Database :: get_main_table(TABLE_MAIN_SESSION).' WHERE id='.$id_checked;
  449. $rs = Database::query($sql);
  450. if (Database::result($rs,0,0)!=$_user['user_id']) {
  451. api_not_allowed(true);
  452. }
  453. }
  454. Database::query("DELETE FROM $tbl_session WHERE id IN($id_checked)");
  455. Database::query("DELETE FROM $tbl_session_rel_course WHERE id_session IN($id_checked)");
  456. Database::query("DELETE FROM $tbl_session_rel_course_rel_user WHERE id_session IN($id_checked)");
  457. Database::query("DELETE FROM $tbl_session_rel_user WHERE id_session IN($id_checked)");
  458. Database::query("DELETE FROM $tbl_url_session WHERE session_id IN($id_checked)");
  459. // delete extra session fields
  460. $t_sf = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  461. $t_sfv = Database::get_main_table(TABLE_MAIN_SESSION_FIELD_VALUES);
  462. // Delete extra fields from session where field variable is "SECCION"
  463. $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' ";
  464. $rs_field = Database::query($sql);
  465. $field_id = 0;
  466. if (Database::num_rows($rs_field) == 1) {
  467. $row_field = Database::fetch_row($rs_field);
  468. $field_id = $row_field[0];
  469. $sql_delete_sfv = "DELETE FROM $t_sfv WHERE session_id = '$id_checked' AND field_id = '$field_id'";
  470. $rs_delete_sfv = Database::query($sql_delete_sfv);
  471. }
  472. $sql = "SELECT * FROM $t_sfv WHERE field_id = '$field_id' ";
  473. $rs_field_id = Database::query($sql);
  474. if (Database::num_rows($rs_field_id) == 0) {
  475. $sql_delete_sf = "DELETE FROM $t_sf WHERE id = '$field_id'";
  476. $rs_delete_sf = Database::query($sql_delete_sf);
  477. }
  478. /*
  479. $sql = "SELECT distinct field_id FROM $t_sfv WHERE session_id = '$id_checked'";
  480. $res_field_ids = @Database::query($sql);
  481. if (Database::num_rows($res_field_ids) > 0) {
  482. while($row_field_id = Database::fetch_row($res_field_ids)){
  483. $field_ids[] = $row_field_id[0];
  484. }
  485. }
  486. //delete from table_session_field_value from a given session id
  487. $sql_session_field_value = "DELETE FROM $t_sfv WHERE session_id = '$id_checked'";
  488. @Database::query($sql_session_field_value);
  489. $sql = "SELECT distinct field_id FROM $t_sfv";
  490. $res_field_all_ids = @Database::query($sql);
  491. if (Database::num_rows($res_field_all_ids) > 0) {
  492. while($row_field_all_id = Database::fetch_row($res_field_all_ids)){
  493. $field_all_ids[] = $row_field_all_id[0];
  494. }
  495. }
  496. if (count($field_ids) > 0 && count($field_all_ids) > 0) {
  497. foreach($field_ids as $field_id) {
  498. // check if field id is used into table field value
  499. if (in_array($field_id,$field_all_ids)) {
  500. continue;
  501. } else {
  502. $sql_session_field = "DELETE FROM $t_sf WHERE id = '$field_id'";
  503. Database::query($sql_session_field);
  504. }
  505. }
  506. }
  507. */
  508. // Add event to system log
  509. $user_id = api_get_user_id();
  510. event_system(LOG_SESSION_DELETE, LOG_SESSION_ID, $id_checked, api_get_utc_datetime(), $user_id);
  511. }
  512. /**
  513. * Subscribes users (students) to the given session and optionally (default) unsubscribes previous users
  514. * @author Carlos Vargas from existing code
  515. * @param integer Session ID
  516. * @param array List of user IDs
  517. * @param bool Whether to unsubscribe existing users (true, default) or not (false)
  518. * @return void Nothing, or false on error
  519. **/
  520. public static function suscribe_users_to_session($id_session, $user_list, $session_visibility = SESSION_VISIBLE_READ_ONLY, $empty_users = true, $send_email = false) {
  521. if ($id_session!= strval(intval($id_session))) return false;
  522. foreach($user_list as $intUser){
  523. if ($intUser!= strval(intval($intUser))) return false;
  524. }
  525. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  526. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  527. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  528. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  529. $session_info = api_get_session_info($id_session);
  530. $session_name = $session_info['name'];
  531. //from function parameter
  532. if (empty($session_visibility)) {
  533. $session_visibility = $session_info['visibility']; //loaded from DB
  534. //default status loaded if empty
  535. if (empty($session_visibility))
  536. $session_visibility = SESSION_VISIBLE_READ_ONLY; // by default readonly 1
  537. } else {
  538. if (!in_array($session_visibility, array(SESSION_VISIBLE_READ_ONLY, SESSION_VISIBLE, SESSION_INVISIBLE))) {
  539. $session_visibility = SESSION_VISIBLE_READ_ONLY;
  540. }
  541. }
  542. $sql = "SELECT id_user FROM $tbl_session_rel_course_rel_user WHERE id_session = '$id_session' AND status = 0";
  543. $result = Database::query($sql);
  544. $existingUsers = array();
  545. while ($row = Database::fetch_array($result)) {
  546. $existingUsers[] = $row['id_user'];
  547. }
  548. $sql = "SELECT course_code FROM $tbl_session_rel_course WHERE id_session = '$id_session'";
  549. $result = Database::query($sql);
  550. $course_list = array();
  551. while ($row = Database::fetch_array($result)) {
  552. $course_list[] = $row['course_code'];
  553. }
  554. if ($send_email) {
  555. //sending emails only
  556. if (is_array($user_list) && count($user_list)>0) {
  557. foreach ($user_list as $user_id) {
  558. if (!in_array($user_id, $existingUsers)) {
  559. $subject = '['.get_setting('siteName').'] '.get_lang('YourReg').' '.get_setting('siteName');
  560. $user_info = api_get_user_info($user_id);
  561. $content = get_lang('Dear')." ".stripslashes($user_info['complete_name']).",\n\n".sprintf(get_lang('YouAreRegisterToSessionX'), $session_name) ." \n\n" .get_lang('Address') ." ". get_setting('siteName') ." ". get_lang('Is') ." : ". api_get_path(WEB_PATH) ."\n\n". get_lang('Problem'). "\n\n". get_lang('Formula').",\n\n".get_setting('administratorName')." ".get_setting('administratorSurname')."\n". get_lang('Manager'). " ".get_setting('siteName')."\nT. ".get_setting('administratorTelephone')."\n" .get_lang('Email') ." : ".get_setting('emailAdministrator');
  562. MessageManager::send_message($user_id, $subject, $content, array(), array(), null, null, null, null, null);
  563. }
  564. }
  565. }
  566. }
  567. foreach ($course_list as $enreg_course) {
  568. // for each course in the session
  569. $nbr_users = 0;
  570. $enreg_course = Database::escape_string($enreg_course);
  571. // delete existing users
  572. if ($empty_users) {
  573. foreach ($existingUsers as $existing_user) {
  574. if (!in_array($existing_user, $user_list)) {
  575. $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";
  576. Database::query($sql);
  577. if (Database::affected_rows()) {
  578. $nbr_users--;
  579. }
  580. }
  581. }
  582. }
  583. //Replace with this new function
  584. //
  585. // insert new users into session_rel_course_rel_user and ignore if they already exist
  586. foreach ($user_list as $enreg_user) {
  587. if(!in_array($enreg_user, $existingUsers)) {
  588. $enreg_user = Database::escape_string($enreg_user);
  589. $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','$session_visibility', '0')";
  590. Database::query($insert_sql);
  591. if(Database::affected_rows()) {
  592. $nbr_users++;
  593. }
  594. }
  595. }
  596. // count users in this session-course relation
  597. $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";
  598. $rs = Database::query($sql);
  599. list($nbr_users) = Database::fetch_array($rs);
  600. // update the session-course relation to add the users total
  601. $update_sql = "UPDATE $tbl_session_rel_course SET nbr_users=$nbr_users WHERE id_session='$id_session' AND course_code='$enreg_course'";
  602. Database::query($update_sql);
  603. }
  604. // Delete users from the session
  605. if ($empty_users===true) {
  606. Database::query("DELETE FROM $tbl_session_rel_user WHERE id_session = $id_session AND relation_type<>".SESSION_RELATION_TYPE_RRHH."");
  607. }
  608. // Insert missing users into session
  609. $nbr_users = 0;
  610. foreach ($user_list as $enreg_user) {
  611. $enreg_user = Database::escape_string($enreg_user);
  612. $nbr_users++;
  613. $insert_sql = "INSERT IGNORE INTO $tbl_session_rel_user (id_session, id_user) VALUES ('$id_session','$enreg_user')";
  614. Database::query($insert_sql);
  615. }
  616. // update number of users in the session
  617. $nbr_users = count($user_list);
  618. if ($empty_users) {
  619. // update number of users in the session
  620. $update_sql = "UPDATE $tbl_session SET nbr_users= $nbr_users WHERE id='$id_session' ";
  621. Database::query($update_sql);
  622. } else {
  623. $update_sql = "UPDATE $tbl_session SET nbr_users= nbr_users + $nbr_users WHERE id='$id_session' ";
  624. Database::query($update_sql);
  625. }
  626. }
  627. function subscribe_users_to_session_course($user_list, $session_id, $course_code, $session_visibility = SESSION_VISIBLE_READ_ONLY ) {
  628. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  629. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  630. if (empty($user_list) || empty($session_id) || empty($course_code)) {
  631. return false;
  632. }
  633. $session_id = intval($session_id);
  634. $course_code = Database::escape_string($course_code);
  635. $session_visibility = intval($session_visibility);
  636. $nbr_users = 0;
  637. foreach ($user_list as $enreg_user) {
  638. //if (!in_array($enreg_user, $existingUsers)) {
  639. $enreg_user = intval($enreg_user);
  640. $insert_sql = "INSERT IGNORE INTO $tbl_session_rel_course_rel_user(id_session,course_code,id_user,visibility)
  641. VALUES ('$session_id','$course_code','$enreg_user','$session_visibility')";
  642. Database::query($insert_sql);
  643. if (Database::affected_rows()) {
  644. $nbr_users++;
  645. }
  646. //}
  647. }
  648. // count users in this session-course relation
  649. $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";
  650. $rs = Database::query($sql);
  651. list($nbr_users) = Database::fetch_array($rs);
  652. // update the session-course relation to add the users total
  653. $update_sql = "UPDATE $tbl_session_rel_course SET nbr_users=$nbr_users WHERE id_session='$session_id' AND course_code='$course_code'";
  654. Database::query($update_sql);
  655. }
  656. /**
  657. * Unsubscribe user from session
  658. *
  659. * @param int Session id
  660. * @param int User id
  661. * @return bool True in case of success, false in case of error
  662. */
  663. public static function unsubscribe_user_from_session($session_id, $user_id) {
  664. $session_id = (int)$session_id;
  665. $user_id = (int)$user_id;
  666. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  667. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  668. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  669. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  670. $delete_sql = "DELETE FROM $tbl_session_rel_user WHERE id_session = '$session_id' AND id_user ='$user_id' AND relation_type<>".SESSION_RELATION_TYPE_RRHH."";
  671. Database::query($delete_sql);
  672. $return = Database::affected_rows();
  673. // Update number of users
  674. $update_sql = "UPDATE $tbl_session SET nbr_users= nbr_users - $return WHERE id='$session_id' ";
  675. Database::query($update_sql);
  676. // Get the list of courses related to this session
  677. $course_list = SessionManager::get_course_list_by_session_id($session_id);
  678. if(!empty($course_list)) {
  679. foreach($course_list as $course) {
  680. $course_code = $course['code'];
  681. // Delete user from course
  682. 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'");
  683. if(Database::affected_rows()) {
  684. // Update number of users in this relation
  685. Database::query("UPDATE $tbl_session_rel_course SET nbr_users=nbr_users - 1 WHERE id_session='$session_id' AND course_code='$course_code'");
  686. }
  687. }
  688. }
  689. return true;
  690. }
  691. /** Subscribes courses to the given session and optionally (default) unsubscribes previous users
  692. * @author Carlos Vargas from existing code
  693. * @param int Session ID
  694. * @param array List of courses IDs
  695. * @param bool Whether to unsubscribe existing users (true, default) or not (false)
  696. * @return void Nothing, or false on error
  697. **/
  698. public static function add_courses_to_session ($id_session, $course_list, $empty_courses=true) {
  699. // security checks
  700. if ($id_session!= strval(intval($id_session))) { return false; }
  701. //foreach($course_list as $intCourse){
  702. // if ($intCourse!= strval(intval($intCourse))) { return false; }
  703. //}
  704. // initialisation
  705. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  706. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  707. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  708. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  709. $tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
  710. // get general coach ID
  711. $id_coach = Database::query("SELECT id_coach FROM $tbl_session WHERE id=$id_session");
  712. $id_coach = Database::fetch_array($id_coach);
  713. $id_coach = $id_coach[0];
  714. // get list of courses subscribed to this session
  715. $rs = Database::query("SELECT course_code FROM $tbl_session_rel_course WHERE id_session=$id_session");
  716. $existingCourses = Database::store_result($rs);
  717. $nbr_courses=count($existingCourses);
  718. // get list of users subscribed to this session
  719. $sql="SELECT id_user
  720. FROM $tbl_session_rel_user
  721. WHERE id_session = $id_session AND relation_type<>".SESSION_RELATION_TYPE_RRHH."";
  722. $result=Database::query($sql);
  723. $user_list=Database::store_result($result);
  724. // remove existing courses from the session
  725. if ($empty_courses===true) {
  726. foreach ($existingCourses as $existingCourse) {
  727. if (!in_array($existingCourse['course_code'], $course_list)){
  728. Database::query("DELETE FROM $tbl_session_rel_course WHERE course_code='".$existingCourse['course_code']."' AND id_session=$id_session");
  729. Database::query("DELETE FROM $tbl_session_rel_course_rel_user WHERE course_code='".$existingCourse['course_code']."' AND id_session=$id_session");
  730. }
  731. }
  732. $nbr_courses=0;
  733. }
  734. // Pass through the courses list we want to add to the session
  735. foreach ($course_list as $enreg_course) {
  736. $enreg_course = Database::escape_string($enreg_course);
  737. $exists = false;
  738. // check if the course we want to add is already subscribed
  739. foreach ($existingCourses as $existingCourse) {
  740. if ($enreg_course == $existingCourse['course_code']) {
  741. $exists=true;
  742. }
  743. }
  744. if (!$exists) {
  745. //if the course isn't subscribed yet
  746. $sql_insert_rel_course= "INSERT INTO $tbl_session_rel_course (id_session,course_code) VALUES ('$id_session','$enreg_course')";
  747. Database::query($sql_insert_rel_course);
  748. //We add the current course in the existing courses array, to avoid adding another time the current course
  749. $existingCourses[]=array('course_code'=>$enreg_course);
  750. $nbr_courses++;
  751. // subscribe all the users from the session to this course inside the session
  752. $nbr_users=0;
  753. foreach ($user_list as $enreg_user) {
  754. $enreg_user_id = Database::escape_string($enreg_user['id_user']);
  755. $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')";
  756. Database::query($sql_insert);
  757. if (Database::affected_rows()) {
  758. $nbr_users++;
  759. }
  760. }
  761. Database::query("UPDATE $tbl_session_rel_course SET nbr_users=$nbr_users WHERE id_session='$id_session' AND course_code='$enreg_course'");
  762. }
  763. }
  764. Database::query("UPDATE $tbl_session SET nbr_courses=$nbr_courses WHERE id='$id_session'");
  765. }
  766. /**
  767. * Unsubscribe course from a session
  768. *
  769. * @param int Session id
  770. * @param int Course id
  771. * @return bool True in case of success, false otherwise
  772. */
  773. public static function unsubscribe_course_from_session($session_id, $course_id) {
  774. $session_id = (int)$session_id;
  775. $course_id = (int)$course_id;
  776. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  777. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  778. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  779. // Get course code
  780. $course_code = CourseManager::get_course_code_from_course_id($course_id);
  781. if($course_code == 0) {
  782. return false;
  783. }
  784. // Unsubscribe course
  785. Database::query("DELETE FROM $tbl_session_rel_course WHERE course_code='$course_code' AND id_session='$session_id'");
  786. $nb_affected = Database::affected_rows();
  787. Database::query("DELETE FROM $tbl_session_rel_course_rel_user WHERE course_code='$course_code' AND id_session='$session_id'");
  788. if($nb_affected > 0) {
  789. // Update number of courses in the session
  790. Database::query("UPDATE $tbl_session SET nbr_courses= nbr_courses + $nb_affected WHERE id='$session_id' ");
  791. return true;
  792. } else {
  793. return false;
  794. }
  795. }
  796. /**
  797. * Creates a new extra field for a given session
  798. * @param string Field's internal variable name
  799. * @param int Field's type
  800. * @param string Field's language var name
  801. * @return int new extra field id
  802. */
  803. public static function create_session_extra_field ($fieldvarname, $fieldtype, $fieldtitle) {
  804. // database table definition
  805. $t_sf = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  806. $fieldvarname = Database::escape_string($fieldvarname);
  807. $fieldtitle = Database::escape_string($fieldtitle);
  808. $fieldtype = (int)$fieldtype;
  809. $time = time();
  810. $sql_field = "SELECT id FROM $t_sf WHERE field_variable = '$fieldvarname'";
  811. $res_field = Database::query($sql_field);
  812. $r_field = Database::fetch_row($res_field);
  813. if (Database::num_rows($res_field)>0) {
  814. $field_id = $r_field[0];
  815. } else {
  816. // save new fieldlabel into course_field table
  817. $sql = "SELECT MAX(field_order) FROM $t_sf";
  818. $res = Database::query($sql);
  819. $order = 0;
  820. if (Database::num_rows($res)>0) {
  821. $row = Database::fetch_row($res);
  822. $order = $row[0]+1;
  823. }
  824. $sql = "INSERT INTO $t_sf
  825. SET field_type = '$fieldtype',
  826. field_variable = '$fieldvarname',
  827. field_display_text = '$fieldtitle',
  828. field_order = '$order',
  829. tms = FROM_UNIXTIME($time)";
  830. $result = Database::query($sql);
  831. $field_id=Database::insert_id();
  832. }
  833. return $field_id;
  834. }
  835. /**
  836. * Update an extra field value for a given session
  837. * @param integer Course ID
  838. * @param string Field variable name
  839. * @param string Field value
  840. * @return boolean true if field updated, false otherwise
  841. */
  842. public static function update_session_extra_field_value ($session_id,$fname,$fvalue='') {
  843. $t_sf = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  844. $t_sfv = Database::get_main_table(TABLE_MAIN_SESSION_FIELD_VALUES);
  845. $fname = Database::escape_string($fname);
  846. $session_id = (int)$session_id;
  847. $fvalues = '';
  848. if(is_array($fvalue)) {
  849. foreach($fvalue as $val) {
  850. $fvalues .= Database::escape_string($val).';';
  851. }
  852. if(!empty($fvalues)) {
  853. $fvalues = substr($fvalues,0,-1);
  854. }
  855. }
  856. else
  857. {
  858. $fvalues = Database::escape_string($fvalue);
  859. }
  860. $sqlsf = "SELECT * FROM $t_sf WHERE field_variable='$fname'";
  861. $ressf = Database::query($sqlsf);
  862. if(Database::num_rows($ressf)==1)
  863. { //ok, the field exists
  864. // Check if enumerated field, if the option is available
  865. $rowsf = Database::fetch_array($ressf);
  866. $tms = time();
  867. $sqlsfv = "SELECT * FROM $t_sfv WHERE session_id = '$session_id' AND field_id = '".$rowsf['id']."' ORDER BY id";
  868. $ressfv = Database::query($sqlsfv);
  869. $n = Database::num_rows($ressfv);
  870. if ($n>1) {
  871. //problem, we already have to values for this field and user combination - keep last one
  872. while($rowsfv = Database::fetch_array($ressfv))
  873. {
  874. if($n > 1)
  875. {
  876. $sqld = "DELETE FROM $t_sfv WHERE id = ".$rowsfv['id'];
  877. $resd = Database::query($sqld);
  878. $n--;
  879. }
  880. $rowsfv = Database::fetch_array($ressfv);
  881. if($rowsfv['field_value'] != $fvalues)
  882. {
  883. $sqlu = "UPDATE $t_sfv SET field_value = '$fvalues', tms = FROM_UNIXTIME($tms) WHERE id = ".$rowsfv['id'];
  884. $resu = Database::query($sqlu);
  885. return($resu?true:false);
  886. }
  887. return true;
  888. }
  889. } else if ($n==1) {
  890. //we need to update the current record
  891. $rowsfv = Database::fetch_array($ressfv);
  892. if($rowsfv['field_value'] != $fvalues)
  893. {
  894. $sqlu = "UPDATE $t_sfv SET field_value = '$fvalues', tms = FROM_UNIXTIME($tms) WHERE id = ".$rowsfv['id'];
  895. //error_log('UM::update_extra_field_value: '.$sqlu);
  896. $resu = Database::query($sqlu);
  897. return($resu?true:false);
  898. }
  899. return true;
  900. } else {
  901. $sqli = "INSERT INTO $t_sfv (session_id,field_id,field_value,tms) " .
  902. "VALUES ('$session_id',".$rowsf['id'].",'$fvalues',FROM_UNIXTIME($tms))";
  903. //error_log('UM::update_extra_field_value: '.$sqli);
  904. $resi = Database::query($sqli);
  905. return($resi?true:false);
  906. }
  907. } else {
  908. return false; //field not found
  909. }
  910. }
  911. /**
  912. * Checks the relationship between a session and a course.
  913. * @param int $session_id
  914. * @param int $course_id
  915. * @return bool Returns TRUE if the session and the course are related, FALSE otherwise.
  916. * */
  917. public static function relation_session_course_exist ($session_id, $course_id) {
  918. $tbl_session_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  919. $return_value = false;
  920. $sql= "SELECT course_code FROM $tbl_session_course WHERE id_session = ".Database::escape_string($session_id)." AND course_code = '".Database::escape_string($course_id)."'";
  921. $result = Database::query($sql);
  922. $num = Database::num_rows($result);
  923. if ($num>0) {
  924. $return_value = true;
  925. }
  926. return $return_value;
  927. }
  928. /**
  929. * Get the session information by name
  930. * @param string session name
  931. * @return mixed false if the session does not exist, array if the session exist
  932. * */
  933. public static function get_session_by_name ($session_name) {
  934. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  935. $sql = 'SELECT id, id_coach, date_start, date_end FROM '.$tbl_session.' WHERE name="'.Database::escape_string($session_name).'"';
  936. $result = Database::query($sql);
  937. $num = Database::num_rows($result);
  938. if ($num>0){
  939. return Database::fetch_array($result);
  940. } else {
  941. return false;
  942. }
  943. }
  944. /**
  945. * Create a session category
  946. * @author Jhon Hinojosa <jhon.hinojosa@dokeos.com>, from existing code
  947. * @param string name
  948. * @param integer year_start
  949. * @param integer month_start
  950. * @param integer day_start
  951. * @param integer year_end
  952. * @param integer month_end
  953. * @param integer day_end
  954. * @return $id_session;
  955. **/
  956. public static function create_category_session($sname,$syear_start,$smonth_start,$sday_start,$syear_end,$smonth_end, $sday_end){
  957. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  958. $name= trim($sname);
  959. $year_start= intval($syear_start);
  960. $month_start=intval($smonth_start);
  961. $day_start=intval($sday_start);
  962. $year_end=intval($syear_end);
  963. $month_end=intval($smonth_end);
  964. $day_end=intval($sday_end);
  965. $date_start = "$year_start-".(($month_start < 10)?"0$month_start":$month_start)."-".(($day_start < 10)?"0$day_start":$day_start);
  966. $date_end = "$year_end-".(($month_end < 10)?"0$month_end":$month_end)."-".(($day_end < 10)?"0$day_end":$day_end);
  967. if (empty($name)) {
  968. $msg=get_lang('SessionCategoryNameIsRequired');
  969. return $msg;
  970. } elseif (!$month_start || !$day_start || !$year_start || !checkdate($month_start,$day_start,$year_start)) {
  971. $msg=get_lang('InvalidStartDate');
  972. return $msg;
  973. } elseif (!$month_end && !$day_end && !$year_end) {
  974. $date_end = "null";
  975. } elseif (!$month_end || !$day_end || !$year_end || !checkdate($month_end,$day_end,$year_end)) {
  976. $msg=get_lang('InvalidEndDate');
  977. return $msg;
  978. } elseif($date_start >= $date_end) {
  979. $msg=get_lang('StartDateShouldBeBeforeEndDate');
  980. return $msg;
  981. }
  982. $access_url_id = api_get_current_access_url_id();
  983. $sql = "INSERT INTO $tbl_session_category (name, date_start, date_end, access_url_id)
  984. VALUES('".Database::escape_string($name)."','$date_start','$date_end', '$access_url_id')";
  985. Database::query($sql);
  986. $id_session = Database::insert_id();
  987. // Add event to system log
  988. $user_id = api_get_user_id();
  989. event_system(LOG_SESSION_CATEGORY_CREATE, LOG_SESSION_CATEGORY_ID, $id_session, api_get_utc_datetime(), $user_id);
  990. return $id_session;
  991. }
  992. /**
  993. * Edit a sessions categories
  994. * @author Jhon Hinojosa <jhon.hinojosa@dokeos.com>,from existing code
  995. * @param integer id
  996. * @param string name
  997. * @param integer year_start
  998. * @param integer month_start
  999. * @param integer day_start
  1000. * @param integer year_end
  1001. * @param integer month_end
  1002. * @param integer day_end
  1003. * @return $id;
  1004. * The parameter id is a primary key
  1005. **/
  1006. public static function edit_category_session($id, $sname,$syear_start,$smonth_start,$sday_start,$syear_end,$smonth_end, $sday_end){
  1007. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  1008. $name= trim($sname);
  1009. $year_start= intval($syear_start);
  1010. $month_start=intval($smonth_start);
  1011. $day_start=intval($sday_start);
  1012. $year_end=intval($syear_end);
  1013. $month_end=intval($smonth_end);
  1014. $day_end=intval($sday_end);
  1015. $id=intval($id);
  1016. $date_start = "$year_start-".(($month_start < 10)?"0$month_start":$month_start)."-".(($day_start < 10)?"0$day_start":$day_start);
  1017. $date_end = "$year_end-".(($month_end < 10)?"0$month_end":$month_end)."-".(($day_end < 10)?"0$day_end":$day_end);
  1018. if (empty($name)) {
  1019. $msg=get_lang('SessionCategoryNameIsRequired');
  1020. return $msg;
  1021. } elseif (!$month_start || !$day_start || !$year_start || !checkdate($month_start,$day_start,$year_start)) {
  1022. $msg=get_lang('InvalidStartDate');
  1023. return $msg;
  1024. } elseif (!$month_end && !$day_end && !$year_end) {
  1025. $date_end = null;
  1026. } elseif (!$month_end || !$day_end || !$year_end || !checkdate($month_end,$day_end,$year_end)) {
  1027. $msg=get_lang('InvalidEndDate');
  1028. return $msg;
  1029. } elseif($date_start >= $date_end) {
  1030. $msg=get_lang('StartDateShouldBeBeforeEndDate');
  1031. return $msg;
  1032. }
  1033. if ( $date_end <> null ) {
  1034. $sql = "UPDATE $tbl_session_category SET name = '".Database::escape_string($name)."', date_start = '$date_start' ".
  1035. ", date_end = '$date_end' WHERE id= '".$id."' ";
  1036. } else {
  1037. $sql = "UPDATE $tbl_session_category SET name = '".Database::escape_string($name)."', date_start = '$date_start' ".
  1038. ", date_end = NULL WHERE id= '".$id."' ";
  1039. }
  1040. $result = Database::query($sql);
  1041. return ($result? true:false);
  1042. }
  1043. /**
  1044. * Delete sessions categories
  1045. * @author Jhon Hinojosa <jhon.hinojosa@dokeos.com>, from existing code
  1046. * @param array id_checked
  1047. * @param bool include delete session
  1048. * @param bool optional, true if the function is called by a webservice, false otherwise.
  1049. * @return void Nothing, or false on error
  1050. * The parameters is a array to delete sessions
  1051. **/
  1052. public static function delete_session_category($id_checked, $delete_session = false,$from_ws = false){
  1053. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  1054. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  1055. if (is_array($id_checked)) {
  1056. $id_checked = Database::escape_string(implode(',',$id_checked));
  1057. } else {
  1058. $id_checked = intval($id_checked);
  1059. }
  1060. //Setting session_category_id to 0
  1061. $sql = "UPDATE $tbl_session SET session_category_id = 0 WHERE session_category_id IN (".$id_checked.")";
  1062. Database::query($sql);
  1063. $sql = "SELECT id FROM $tbl_session WHERE session_category_id IN (".$id_checked.")";
  1064. $result = @Database::query($sql);
  1065. while ($rows = Database::fetch_array($result)) {
  1066. $session_id = $rows['id'];
  1067. if ($delete_session) {
  1068. if ($from_ws) {
  1069. SessionManager::delete_session($session_id,true);
  1070. } else {
  1071. SessionManager::delete_session($session_id);
  1072. }
  1073. }
  1074. }
  1075. $sql = "DELETE FROM $tbl_session_category WHERE id IN (".$id_checked.")";
  1076. $rs = @Database::query($sql);
  1077. $result = Database::affected_rows();
  1078. // Add event to system log
  1079. $user_id = api_get_user_id();
  1080. event_system(LOG_SESSION_CATEGORY_DELETE, LOG_SESSION_CATEGORY_ID, $id_checked, api_get_utc_datetime(), $user_id);
  1081. // delete extra session fields where field variable is "PERIODO"
  1082. $t_sf = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  1083. $t_sfv = Database::get_main_table(TABLE_MAIN_SESSION_FIELD_VALUES);
  1084. $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' ";
  1085. $rs_field = Database::query($sql);
  1086. $field_id = 0;
  1087. if (Database::num_rows($rs_field) > 0) {
  1088. $row_field = Database::fetch_row($rs_field);
  1089. $field_id = $row_field[0];
  1090. $sql_delete_sfv = "DELETE FROM $t_sfv WHERE session_id = '$id_checked' AND field_id = '$field_id'";
  1091. $rs_delete_sfv = Database::query($sql_delete_sfv);
  1092. }
  1093. $sql = "SELECT * FROM $t_sfv WHERE field_id = '$field_id' ";
  1094. $rs_field_id = Database::query($sql);
  1095. if (Database::num_rows($rs_field_id) == 0) {
  1096. $sql_delete_sf = "DELETE FROM $t_sf WHERE id = '$field_id'";
  1097. $rs_delete_sf = Database::query($sql_delete_sf);
  1098. }
  1099. return true;
  1100. }
  1101. /**
  1102. * Get a list of sessions of which the given conditions match with an = 'cond'
  1103. * @param array $conditions a list of condition (exemple : array('status =' =>STUDENT) or array('s.name LIKE' => "%$needle%")
  1104. * @param array $order_by a list of fields on which sort
  1105. * @return array An array with all sessions of the platform.
  1106. * @todo optional course code parameter, optional sorting parameters...
  1107. */
  1108. public static function get_sessions_list($conditions = array(), $order_by = array()) {
  1109. $session_table = Database::get_main_table(TABLE_MAIN_SESSION);
  1110. $session_category_table = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  1111. $user_table = Database::get_main_table(TABLE_MAIN_USER);
  1112. $table_access_url_rel_session = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  1113. $access_url_id = api_get_current_access_url_id();
  1114. $return_array = array();
  1115. $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
  1116. FROM $session_table s
  1117. INNER JOIN $user_table u ON s.id_coach = u.user_id
  1118. INNER JOIN $table_access_url_rel_session ar ON ar.session_id = s.id
  1119. LEFT JOIN $session_category_table sc ON s.session_category_id = sc.id
  1120. WHERE ar.access_url_id = $access_url_id ";
  1121. if (count($conditions)>0) {
  1122. $sql_query .= ' AND ';
  1123. foreach ($conditions as $field=>$value) {
  1124. $field = Database::escape_string($field);
  1125. $value = Database::escape_string($value);
  1126. $sql_query .= $field." '".$value."'";
  1127. }
  1128. }
  1129. if (count($order_by)>0) {
  1130. $sql_query .= ' ORDER BY '.Database::escape_string(implode(',',$order_by));
  1131. }
  1132. //echo $sql_query;
  1133. $sql_result = Database::query($sql_query);
  1134. if (Database::num_rows($sql_result)>0) {
  1135. while ($result = Database::fetch_array($sql_result)) {
  1136. $return_array[$result['id']] = $result;
  1137. }
  1138. }
  1139. return $return_array;
  1140. }
  1141. /**
  1142. * Get the session category information by id
  1143. * @param string session category ID
  1144. * @return mixed false if the session category does not exist, array if the session category exists
  1145. */
  1146. public static function get_session_category ($id) {
  1147. $id = intval($id);
  1148. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  1149. $sql = "SELECT id, name, date_start, date_end FROM $tbl_session_category WHERE id= $id";
  1150. $result = Database::query($sql);
  1151. $num = Database::num_rows($result);
  1152. if ($num>0){
  1153. return Database::fetch_array($result);
  1154. } else {
  1155. return false;
  1156. }
  1157. }
  1158. /**
  1159. * Get all session categories (filter by access_url_id)
  1160. * @return mixed false if the session category does not exist, array if the session category exists
  1161. */
  1162. public static function get_all_session_category() {
  1163. $tbl_session_category = Database::get_main_table(TABLE_MAIN_SESSION_CATEGORY);
  1164. $id = api_get_current_access_url_id();
  1165. $sql = 'SELECT * FROM '.$tbl_session_category.' WHERE access_url_id ="'.$id.'" ORDER BY name ASC';
  1166. $result = Database::query($sql);
  1167. if (Database::num_rows($result) > 0 ){
  1168. $data = Database::store_result($result,'ASSOC');
  1169. return $data;
  1170. } else {
  1171. return false;
  1172. }
  1173. }
  1174. /**
  1175. * Assign a coach to course in session with status = 2
  1176. * @param int - user id
  1177. * @param int - session id
  1178. * @param string - course code
  1179. * @param bool - optional, if is true the user don't be a coach now, otherwise it'll assign a coach
  1180. * @return bool true if there are affected rows, otherwise false
  1181. */
  1182. public static function set_coach_to_course_session($user_id, $session_id = 0, $course_code = '',$nocoach = false) {
  1183. // Definition of variables
  1184. $user_id = intval($user_id);
  1185. if (!empty($session_id)) {
  1186. $session_id = intval($session_id);
  1187. } else {
  1188. $session_id = api_get_session_id();
  1189. }
  1190. if (!empty($course_code)) {
  1191. $course_code = Database::escape_string($course_code);
  1192. } else {
  1193. $course_code = api_get_course_id();
  1194. }
  1195. // definitios of tables
  1196. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  1197. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  1198. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  1199. // check if user is a teacher
  1200. $sql= "SELECT * FROM $tbl_user WHERE status='1' AND user_id = '$user_id'";
  1201. $rs_check_user = Database::query($sql);
  1202. if (Database::num_rows($rs_check_user) > 0) {
  1203. if ($nocoach) {
  1204. // check if user_id exits int session_rel_user
  1205. $sql = "SELECT id_user FROM $tbl_session_rel_user WHERE id_session = '$session_id' AND id_user = '$user_id'";
  1206. $res = Database::query($sql);
  1207. if (Database::num_rows($res) > 0) {
  1208. // The user don't be a coach now
  1209. $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' ";
  1210. $rs_update = Database::query($sql);
  1211. if (Database::affected_rows() > 0) return true;
  1212. else return false;
  1213. } else {
  1214. // The user don't be a coach now
  1215. $sql = "DELETE FROM $tbl_session_rel_course_rel_user WHERE id_session = '$session_id' AND course_code = '$course_code' AND id_user = '$user_id' ";
  1216. $rs_delete = Database::query($sql);
  1217. if (Database::affected_rows() > 0) return true;
  1218. else return false;
  1219. }
  1220. } else {
  1221. // Assign user like a coach to course
  1222. // First check if the user is registered in the course
  1223. $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'";
  1224. $rs_check = Database::query($sql);
  1225. //Then update or insert
  1226. if (Database::num_rows($rs_check) > 0) {
  1227. $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' ";
  1228. $rs_update = Database::query($sql);
  1229. if (Database::affected_rows() > 0) return true;
  1230. else return false;
  1231. } else {
  1232. $sql = "INSERT INTO $tbl_session_rel_course_rel_user(id_session, course_code, id_user, status) VALUES('$session_id', '$course_code', '$user_id', 2)";
  1233. Database::query($sql);
  1234. if (Database::affected_rows() > 0) return true;
  1235. else return false;
  1236. }
  1237. }
  1238. } else {
  1239. return false;
  1240. }
  1241. }
  1242. /**
  1243. * Subscribes sessions to human resource manager (Dashboard feature)
  1244. * @param int Human Resource Manager id
  1245. * @param array Sessions id
  1246. * @param int Relation type
  1247. **/
  1248. public static function suscribe_sessions_to_hr_manager($hr_manager_id,$sessions_list) {
  1249. global $_configuration;
  1250. // Database Table Definitions
  1251. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  1252. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  1253. $tbl_session_rel_course_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  1254. $tbl_session_rel_access_url = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  1255. $hr_manager_id = intval($hr_manager_id);
  1256. $affected_rows = 0;
  1257. //Deleting assigned sessions to hrm_id
  1258. if ($_configuration['multiple_access_urls']) {
  1259. $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()."";
  1260. } else {
  1261. $sql = "SELECT id_session FROM $tbl_session_rel_user s WHERE id_user = $hr_manager_id AND relation_type=".SESSION_RELATION_TYPE_RRHH."";
  1262. }
  1263. $result = Database::query($sql);
  1264. if (Database::num_rows($result) > 0) {
  1265. while ($row = Database::fetch_array($result)) {
  1266. $sql = "DELETE FROM $tbl_session_rel_user WHERE id_session = {$row['id_session']} AND id_user = $hr_manager_id AND relation_type=".SESSION_RELATION_TYPE_RRHH." ";
  1267. Database::query($sql);
  1268. }
  1269. }
  1270. /*
  1271. //Deleting assigned courses in sessions to hrm_id
  1272. $sql = "SELECT * FROM $tbl_session_rel_course_user WHERE id_user = $hr_manager_id ";
  1273. $result = Database::query($sql);
  1274. if (Database::num_rows($result) > 0) {
  1275. $sql = "DELETE FROM $tbl_session_rel_course_user WHERE id_user = $hr_manager_id ";
  1276. Database::query($sql);
  1277. }
  1278. */
  1279. // inserting new sessions list
  1280. if (is_array($sessions_list)) {
  1281. foreach ($sessions_list as $session_id) {
  1282. $session_id = intval($session_id);
  1283. $insert_sql = "INSERT IGNORE INTO $tbl_session_rel_user(id_session, id_user, relation_type) VALUES($session_id, $hr_manager_id, '".SESSION_RELATION_TYPE_RRHH."')";
  1284. Database::query($insert_sql);
  1285. $affected_rows = Database::affected_rows();
  1286. }
  1287. }
  1288. return $affected_rows;
  1289. }
  1290. /**
  1291. * Get sessions followed by human resources manager
  1292. * @param int Human resources manager or Session admin id
  1293. * @return array sessions
  1294. */
  1295. public static function get_sessions_followed_by_drh($hr_manager_id) {
  1296. global $_configuration;
  1297. // Database Table Definitions
  1298. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  1299. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  1300. $tbl_session_rel_access_url = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  1301. $hr_manager_id = intval($hr_manager_id);
  1302. $assigned_sessions_to_hrm = array();
  1303. if (api_is_multiple_url_enabled()) {
  1304. $sql = "SELECT * FROM $tbl_session s INNER JOIN $tbl_session_rel_user sru ON (sru.id_session = s.id) LEFT JOIN $tbl_session_rel_access_url a ON (s.id = a.session_id)
  1305. WHERE sru.id_user = '$hr_manager_id' AND sru.relation_type = '".SESSION_RELATION_TYPE_RRHH."' AND access_url_id = ".api_get_current_access_url_id()."";
  1306. } else {
  1307. $sql = "SELECT * FROM $tbl_session s
  1308. 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."' ";
  1309. }
  1310. $rs_assigned_sessions = Database::query($sql);
  1311. if (Database::num_rows($rs_assigned_sessions) > 0) {
  1312. while ($row_assigned_sessions = Database::fetch_array($rs_assigned_sessions)) {
  1313. $assigned_sessions_to_hrm[$row_assigned_sessions['id']] = $row_assigned_sessions;
  1314. }
  1315. }
  1316. return $assigned_sessions_to_hrm;
  1317. }
  1318. /**
  1319. * Gets the list of courses by session filtered by access_url
  1320. * @param int session id
  1321. * @return array list of courses
  1322. */
  1323. public static function get_course_list_by_session_id ($session_id) {
  1324. $tbl_course = Database::get_main_table(TABLE_MAIN_COURSE);
  1325. $tbl_session_rel_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  1326. // select the courses
  1327. $sql = "SELECT * FROM $tbl_course c INNER JOIN $tbl_session_rel_course src ON c.code = src.course_code
  1328. WHERE src.id_session = '$session_id' ORDER BY title;";
  1329. $result = Database::query($sql);
  1330. $num_rows = Database::num_rows($result);
  1331. $courses = array();
  1332. if ($num_rows > 0) {
  1333. while ($row = Database::fetch_array($result,'ASSOC')) {
  1334. $courses[$row['id']] = $row;
  1335. }
  1336. }
  1337. return $courses;
  1338. }
  1339. /**
  1340. * Get the session id based on the original id and field name in the extra fields. Returns 0 if session was not found
  1341. *
  1342. * @param string Original session id
  1343. * @param string Original field name
  1344. * @return int Session id
  1345. */
  1346. public static function get_session_id_from_original_id($original_session_id_value, $original_session_id_name) {
  1347. $t_sfv = Database::get_main_table(TABLE_MAIN_SESSION_FIELD_VALUES);
  1348. $table_field = Database::get_main_table(TABLE_MAIN_SESSION_FIELD);
  1349. $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'";
  1350. $res_session = Database::query($sql_session);
  1351. $row = Database::fetch_object($res_session);
  1352. if ($row) {
  1353. return $row->session_id;
  1354. } else {
  1355. return 0;
  1356. }
  1357. }
  1358. /**
  1359. * Get users by session
  1360. * @param int session id
  1361. * @param int filter by status
  1362. * @return array a list with an user list
  1363. */
  1364. public static function get_users_by_session($id, $with_status = null) {
  1365. if (empty($id)) {
  1366. return array();
  1367. }
  1368. $id = intval($id);
  1369. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  1370. $tbl_session_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  1371. $sql = "SELECT $tbl_user.user_id, lastname, firstname, username
  1372. FROM $tbl_user INNER JOIN $tbl_session_rel_user
  1373. ON $tbl_user.user_id = $tbl_session_rel_user.id_user
  1374. AND $tbl_session_rel_user.id_session = $id";
  1375. if (isset($with_status) && $with_status != '') {
  1376. $with_status = intval($with_status);
  1377. $sql .= " WHERE relation_type = $with_status ";
  1378. }
  1379. $result = Database::query($sql);
  1380. while ($row = Database::fetch_array($result,'ASSOC')) {
  1381. $return_array[] = $row;
  1382. }
  1383. return $return_array;
  1384. }
  1385. /**
  1386. * The general coach (field: session.id_coach)
  1387. * @param int user id
  1388. */
  1389. public static function get_sessions_by_general_coach($user_id) {
  1390. $session_table = Database::get_main_table(TABLE_MAIN_SESSION);
  1391. $user_id = intval($user_id);
  1392. // session where we are general coach
  1393. $sql = "SELECT DISTINCT *
  1394. FROM $session_table
  1395. WHERE id_coach = $user_id";
  1396. if (api_is_multiple_url_enabled()) {
  1397. $tbl_session_rel_access_url= Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  1398. $access_url_id = api_get_current_access_url_id();
  1399. if ($access_url_id != -1) {
  1400. $sql = 'SELECT DISTINCT session.*
  1401. FROM '.$session_table.' session INNER JOIN '.$tbl_session_rel_access_url.' session_rel_url
  1402. ON (session.id = session_rel_url.session_id)
  1403. WHERE id_coach = '.$user_id.' AND access_url_id = '.$access_url_id;
  1404. }
  1405. }
  1406. $sql .= ' ORDER by name';
  1407. $result = Database::query($sql);
  1408. return Database::store_result($result, 'ASSOC');
  1409. }
  1410. public static function get_sessions_by_coach($user_id) {
  1411. $session_table = Database::get_main_table(TABLE_MAIN_SESSION);
  1412. return Database::select('*', $session_table, array('where'=>array('id_coach = ?'=>$user_id)));
  1413. }
  1414. public static function get_user_status_in_course_session($user_id, $course_code, $session_id) {
  1415. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  1416. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  1417. $sql = "SELECT session_rcru.status
  1418. FROM $tbl_session_rel_course_rel_user session_rcru, $tbl_user user
  1419. WHERE session_rcru.id_user = user.user_id AND
  1420. session_rcru.id_session = '".intval($session_id)."' AND
  1421. session_rcru.course_code ='".Database::escape_string($course_code)."' AND
  1422. user.user_id = ".intval($user_id);
  1423. $result = Database::query($sql);
  1424. $status = false;
  1425. if (Database::num_rows($result)) {
  1426. $status = Database::fetch_row($result);
  1427. $status = $status['0'];
  1428. }
  1429. return $status;
  1430. }
  1431. /**
  1432. * Gets user status within a session
  1433. * @param $user_id
  1434. * @param $course_code
  1435. * @param $session_id
  1436. * @return unknown_type
  1437. */
  1438. public static function get_user_status_in_session($user_id, $course_code, $session_id) {
  1439. $tbl_session_rel_course_rel_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  1440. $tbl_user = Database::get_main_table(TABLE_MAIN_USER);
  1441. $sql = "SELECT session_rcru.status
  1442. FROM $tbl_session_rel_course_rel_user session_rcru, $tbl_user user
  1443. WHERE session_rcru.id_user = user.user_id AND
  1444. session_rcru.id_session = '".intval($session_id)."' AND
  1445. session_rcru.course_code ='".Database::escape_string($course_code)."' AND
  1446. user.user_id = ".intval($user_id);
  1447. $result = Database::query($sql);
  1448. $status = false;
  1449. if (Database::num_rows($result)) {
  1450. $status = Database::fetch_row($result);
  1451. $status = $status['0'];
  1452. }
  1453. return $status;
  1454. }
  1455. static function get_all_sessions_by_promotion($id) {
  1456. $t = Database::get_main_table(TABLE_MAIN_SESSION);
  1457. return Database::select('*', $t, array('where'=>array('promotion_id = ?'=>$id)));
  1458. }
  1459. static function suscribe_sessions_to_promotion($promotion_id, $list) {
  1460. $t = Database::get_main_table(TABLE_MAIN_SESSION);
  1461. $params = array();
  1462. $params['promotion_id'] = 0;
  1463. Database::update($t, $params, array('promotion_id = ?'=>$promotion_id));
  1464. $params['promotion_id'] = $promotion_id;
  1465. if (!empty($list)) {
  1466. foreach ($list as $session_id) {
  1467. $session_id= intval($session_id);
  1468. Database::update($t, $params, array('id = ?'=>$session_id));
  1469. }
  1470. }
  1471. }
  1472. /**
  1473. * Updates a session status
  1474. * @param int session id
  1475. * @param int status
  1476. */
  1477. public static function set_session_status($session_id, $status) {
  1478. $t = Database::get_main_table(TABLE_MAIN_SESSION);
  1479. $params['visibility'] = $status;
  1480. Database::update($t, $params, array('id = ?'=>$session_id));
  1481. }
  1482. /**
  1483. * Copies a session with the same data to a new session.
  1484. * The new copy is not assigned to the same promotion. @see suscribe_sessions_to_promotions() for that
  1485. * @param int Session ID
  1486. * @param bool Whether to copy the relationship with courses
  1487. * @param bool Whether to copy the relationship with users
  1488. * @param bool New courses will be created
  1489. * @return int The new session ID on success, 0 otherwise
  1490. * @todo make sure the extra session fields are copied too
  1491. */
  1492. /**
  1493. * @param $id
  1494. * @param $copy_courses
  1495. * @param $copy_users
  1496. * @param $create_new_courses
  1497. * @param $set_exercises_lp_invisible
  1498. * @return int
  1499. */
  1500. public function copy_session($id, $copy_courses = true, $copy_users = true, $create_new_courses = false, $set_exercises_lp_invisible = false) {
  1501. $id = intval($id);
  1502. $s = self::fetch($id);
  1503. $s['year_start'] = substr($s['date_start'],0,4);
  1504. $s['month_start'] = substr($s['date_start'],5,2);
  1505. $s['day_start'] = substr($s['date_start'],8,2);
  1506. $s['year_end'] = substr($s['date_end'],0,4);
  1507. $s['month_end'] = substr($s['date_end'],5,2);
  1508. $s['day_end'] = substr($s['date_end'],8,2);
  1509. $consider_start = true;
  1510. if ($s['year_start'].'-'.$s['month_start'].'-'.$s['day_start'] == '0000-00-00') {
  1511. $consider_start = false;
  1512. }
  1513. $consider_end = true;
  1514. if ($s['year_end'].'-'.$s['month_end'].'-'.$s['day_end'] == '0000-00-00') {
  1515. $consider_end = false;
  1516. }
  1517. $sid = self::create_session($s['name'].' '.get_lang('Copy'),
  1518. $s['year_start'], $s['month_start'], $s['day_start'],
  1519. $s['year_end'],$s['month_end'],$s['day_end'],
  1520. $s['nb_days_acess_before_beginning'],$s['nb_days_acess_after_end'],
  1521. false,(int)$s['id_coach'], $s['session_category_id'],
  1522. (int)$s['visibility'],$consider_start, $consider_end, true);
  1523. if (!is_numeric($sid) || empty($sid)) {
  1524. return false;
  1525. }
  1526. if ($copy_courses) {
  1527. // Register courses from the original session to the new session
  1528. $courses = self::get_course_list_by_session_id($id);
  1529. $short_courses = $new_short_courses = array();
  1530. if (is_array($courses) && count($courses)>0) {
  1531. foreach ($courses as $course) {
  1532. $short_courses[] = $course;
  1533. }
  1534. }
  1535. $courses = null;
  1536. //We will copy the current courses of the session to new courses
  1537. if (!empty($short_courses)) {
  1538. if ($create_new_courses) {
  1539. //Just in case
  1540. if (function_exists('ini_set')) {
  1541. api_set_memory_limit('256M');
  1542. ini_set('max_execution_time',0);
  1543. }
  1544. $params = array();
  1545. $params['skip_lp_dates'] = true;
  1546. foreach ($short_courses as $course_data) {
  1547. $course_info = CourseManager::copy_course_simple($course_data['title'].' '.get_lang('Copy'), $course_data['course_code'], $id, $sid, $params);
  1548. if ($course_info) {
  1549. //By default new elements are invisible
  1550. if ($set_exercises_lp_invisible) {
  1551. require_once api_get_path(SYS_CODE_PATH).'newscorm/learnpathList.class.php';
  1552. $list = new LearnpathList('', $course_info['code'], $sid);
  1553. $flat_list = $list->get_flat_list();
  1554. if (!empty($flat_list)) {
  1555. foreach($flat_list as $lp_id => $data) {
  1556. api_item_property_update($course_info, TOOL_LEARNPATH, $lp_id, 'invisible', api_get_user_id(), 0 ,0, 0, 0, $sid);
  1557. api_item_property_update($course_info, TOOL_LEARNPATH, $lp_id, 'invisible', api_get_user_id(), 0 ,0, 0, 0);
  1558. }
  1559. }
  1560. $quiz_table = Database::get_course_table(TABLE_QUIZ_TEST);
  1561. $course_id = $course_info['real_id'];
  1562. //@todo check this query
  1563. $sql = "UPDATE $quiz_table SET active = 0 WHERE c_id = $course_id ";
  1564. $result=Database::query($sql);
  1565. }
  1566. $new_short_courses[] = $course_info['code'];
  1567. }
  1568. }
  1569. } else {
  1570. foreach($short_courses as $course_data) {
  1571. $new_short_courses[] = $course_data['code'];
  1572. }
  1573. }
  1574. $short_courses = $new_short_courses;
  1575. $res = self::add_courses_to_session($sid, $short_courses, true);
  1576. $short_courses = null;
  1577. }
  1578. }
  1579. if ($copy_users) {
  1580. // Register users from the original session to the new session
  1581. $users = self::get_users_by_session($id);
  1582. $short_users = array();
  1583. if (is_array($users) && count($users)>0) {
  1584. foreach ($users as $user) {
  1585. $short_users[] = $user['user_id'];
  1586. }
  1587. }
  1588. $users = null;
  1589. //Subscribing in read only mode
  1590. $res = self::suscribe_users_to_session($sid, $short_users, SESSION_VISIBLE_READ_ONLY, true, false);
  1591. $short_users = null;
  1592. }
  1593. return $sid;
  1594. }
  1595. static function user_is_general_coach($user_id, $session_id) {
  1596. $session_id = intval($session_id);
  1597. $user_id = intval($user_id);
  1598. $session_table = Database::get_main_table(TABLE_MAIN_SESSION);
  1599. $sql = "SELECT DISTINCT id
  1600. FROM $session_table
  1601. WHERE session.id_coach = '".$user_id."' AND id = '$session_id'";
  1602. $result = Database::query($sql);
  1603. if ($result && Database::num_rows($result)) {
  1604. return true;
  1605. }
  1606. return false;
  1607. }
  1608. /**
  1609. * Get the number of sessions
  1610. * @param int ID of the URL we want to filter on (optional)
  1611. * @return int Number of sessions
  1612. */
  1613. public static function count_sessions($access_url_id=null) {
  1614. $session_table = Database::get_main_table(TABLE_MAIN_SESSION);
  1615. $access_url_rel_session_table = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_SESSION);
  1616. $sql = "SELECT count(id) FROM $session_table s";
  1617. if (!empty($access_url_id) && $access_url_id == intval($access_url_id)) {
  1618. $sql .= ", $access_url_rel_session_table u ".
  1619. " WHERE s.id = u.session_id AND u.access_url_id = $access_url_id";
  1620. }
  1621. $res = Database::query($sql);
  1622. $row = Database::fetch_row($res);
  1623. return $row[0];
  1624. }
  1625. static function protect_session_edit($id) {
  1626. api_protect_admin_script(true);
  1627. $session_info = self::fetch($id);
  1628. if (!api_is_platform_admin() && api_get_setting('allow_session_admins_to_manage_all_sessions') != 'true') {
  1629. if ($session_info['session_admin_id'] != api_get_user_id()) {
  1630. api_not_allowed(true);
  1631. }
  1632. }
  1633. }
  1634. static function get_session_by_course($course_code) {
  1635. $table_session_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  1636. $table_session = Database::get_main_table(TABLE_MAIN_SESSION);
  1637. $course_code = Database::escape_string($course_code);
  1638. $sql = "SELECT name, s.id FROM $table_session_course sc INNER JOIN $table_session s ON (sc.id_session = s.id)
  1639. WHERE sc.course_code = '$course_code' ";
  1640. $result = Database::query($sql);
  1641. return Database::store_result($result);
  1642. }
  1643. static function get_sessions_by_user($user_id) {
  1644. $session_categories = UserManager::get_sessions_by_category($user_id);
  1645. $session_array = array();
  1646. if (!empty($session_categories)) {
  1647. foreach ($session_categories as $category) {
  1648. if (isset($category['sessions'])) {
  1649. foreach ($category['sessions'] as $session) {
  1650. $session_array[] = $session;
  1651. }
  1652. }
  1653. }
  1654. }
  1655. return $session_array;
  1656. }
  1657. /**
  1658. * @param string $file
  1659. * @param bool $updatesession options:
  1660. * true: if the session exists it will be updated
  1661. * false: if session exists a new session will be created adding a counter session1, session2, etc
  1662. * @param int $user_id
  1663. * @return array
  1664. */
  1665. static function importCSV($file, $updatesession, $user_id = null, $debug = false)
  1666. {
  1667. $content = file($file);
  1668. $error_message = null;
  1669. $session_counter = 0;
  1670. if (empty($user_id)) {
  1671. $user_id = api_get_user_id();
  1672. }
  1673. $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
  1674. $tbl_session_user = Database::get_main_table(TABLE_MAIN_SESSION_USER);
  1675. $tbl_session_course = Database::get_main_table(TABLE_MAIN_SESSION_COURSE);
  1676. $tbl_session_course_user = Database::get_main_table(TABLE_MAIN_SESSION_COURSE_USER);
  1677. if (!api_strstr($content[0], ';')) {
  1678. $error_message = get_lang('NotCSV');
  1679. } else {
  1680. $tag_names = array();
  1681. foreach ($content as $key => $enreg) {
  1682. $enreg = explode(';', trim($enreg));
  1683. if ($key) {
  1684. foreach ($tag_names as $tag_key => $tag_name) {
  1685. $sessions[$key - 1][$tag_name] = $enreg[$tag_key];
  1686. }
  1687. } else {
  1688. foreach ($enreg as $tag_name) {
  1689. $tag_names[] = api_preg_replace('/[^a-zA-Z0-9_\-]/', '', $tag_name);
  1690. }
  1691. if (!in_array('SessionName', $tag_names) || !in_array('DateStart', $tag_names) || !in_array('DateEnd', $tag_names)) {
  1692. $error_message = get_lang('NoNeededData');
  1693. break;
  1694. }
  1695. }
  1696. }
  1697. // Looping the sessions.
  1698. foreach ($sessions as $enreg) {
  1699. $user_counter = 0;
  1700. $course_counter = 0;
  1701. $session_name = $enreg['SessionName'];
  1702. $date_start = $enreg['DateStart'];
  1703. $date_end = $enreg['DateEnd'];
  1704. $visibility = $enreg['Visibility'];
  1705. $session_category_id = $enreg['SessionCategory'];
  1706. // Searching a coach.
  1707. if (!empty($enreg['Coach'])) {
  1708. $coach_id = UserManager::get_user_id_from_username($enreg['Coach']);
  1709. if ($coach_id === false) {
  1710. // If the coach-user does not exist - I'm the coach.
  1711. $coach_id = api_get_user_id();
  1712. }
  1713. } else {
  1714. $coach_id = api_get_user_id();
  1715. }
  1716. if (!$updatesession) {
  1717. // Always create a session.
  1718. $unique_name = false; // This MUST be initializead.
  1719. $i = 0;
  1720. // Change session name, verify that session doesn't exist.
  1721. while (!$unique_name) {
  1722. if ($i > 1) {
  1723. $suffix = ' - '.$i;
  1724. }
  1725. $sql = 'SELECT 1 FROM '.$tbl_session.' WHERE name="'.Database::escape_string($session_name.$suffix).'"';
  1726. $rs = Database::query($sql);
  1727. if (Database::result($rs, 0, 0)) {
  1728. $i++;
  1729. } else {
  1730. $unique_name = true;
  1731. $session_name .= $suffix;
  1732. }
  1733. }
  1734. // Creating the session.
  1735. $sql_session = "INSERT IGNORE INTO $tbl_session SET
  1736. name = '".Database::escape_string($session_name)."',
  1737. id_coach = '$coach_id',
  1738. date_start = '$date_start',
  1739. date_end = '$date_end',
  1740. visibility = '$visibility',
  1741. session_category_id = '$session_category_id',
  1742. session_admin_id=".intval($user_id);
  1743. Database::query($sql_session);
  1744. $session_id = Database::insert_id();
  1745. if ($debug) {
  1746. if ($session_id) {
  1747. Log::info("Sessions - Session created: #$session_id - $session_name");
  1748. } else {
  1749. Log::error("Sessions - Session NOT created $session_name");
  1750. }
  1751. }
  1752. $session_counter++;
  1753. } else {
  1754. $my_session_result = SessionManager::get_session_by_name($session_name);
  1755. if ($my_session_result === false) {
  1756. // Creating a session.
  1757. $sql_session = "INSERT IGNORE INTO $tbl_session SET
  1758. name = '$session_name',
  1759. id_coach = '$coach_id',
  1760. date_start = '$date_start',
  1761. date_end = '$date_end',
  1762. visibility = '$visibility',
  1763. session_category_id = '$session_category_id'";
  1764. Database::query($sql_session);
  1765. // We get the last insert id.
  1766. $my_session_result = SessionManager::get_session_by_name($session_name);
  1767. $session_id = $my_session_result['id'];
  1768. if ($debug) {
  1769. if ($session_id) {
  1770. Log::info("Sessions - #$session_id created: $session_name");
  1771. } else {
  1772. Log::error("Sessions - Session NOT created $session_name");
  1773. }
  1774. }
  1775. } else {
  1776. // The session already exists, update it then.
  1777. $sql_session = "UPDATE $tbl_session SET
  1778. id_coach = '$coach_id',
  1779. date_start = '$date_start',
  1780. date_end = '$date_end',
  1781. visibility = '$visibility',
  1782. session_category_id = '$session_category_id'
  1783. WHERE name = '$session_name'";
  1784. Database::query($sql_session);
  1785. $session_id = Database::query("SELECT id FROM $tbl_session WHERE name='$session_name'");
  1786. list($session_id) = Database::fetch_array($session_id);
  1787. Database::query("DELETE FROM $tbl_session_user WHERE id_session='$session_id'");
  1788. Database::query("DELETE FROM $tbl_session_course WHERE id_session='$session_id'");
  1789. Database::query("DELETE FROM $tbl_session_course_user WHERE id_session='$session_id'");
  1790. }
  1791. $session_counter++;
  1792. }
  1793. $users = explode('|', $enreg['Users']);
  1794. // Adding the relationship "Session - User".
  1795. if (is_array($users)) {
  1796. foreach ($users as $user) {
  1797. $user_id = UserManager::get_user_id_from_username($user);
  1798. if ($user_id !== false) {
  1799. // Insert new users.
  1800. $sql = "INSERT IGNORE INTO $tbl_session_user SET
  1801. id_user='$user_id',
  1802. id_session = '$session_id'";
  1803. Database::query($sql);
  1804. if ($debug) {
  1805. Log::info("Sessions - Adding User #$user_id to session #$session_id");
  1806. }
  1807. $user_counter++;
  1808. }
  1809. }
  1810. }
  1811. $courses = explode('|', $enreg['Courses']);
  1812. foreach ($courses as $course) {
  1813. $course_code = api_strtoupper(api_substr($course, 0, api_strpos($course, '[')));
  1814. if (CourseManager::course_exists($course_code)) {
  1815. // If the course exists we continue.
  1816. $course_info = CourseManager::get_course_information($course_code);
  1817. $coach = api_strstr($course, '[');
  1818. $coach = api_substr($coach, 1, api_strpos($coach,']') - 1);
  1819. if (!empty($coach)) {
  1820. $coach_id = UserManager::get_user_id_from_username($coach);
  1821. if ($coach_id === false) {
  1822. $coach_id = '';
  1823. }
  1824. } else {
  1825. $coach = '';
  1826. }
  1827. // Adding the course to a session.
  1828. $sql_course = "INSERT IGNORE INTO $tbl_session_course SET
  1829. course_code = '$course_code',
  1830. id_session='$session_id'";
  1831. Database::query($sql_course);
  1832. if ($debug) {
  1833. Log::info("Sessions - Adding course '$course_code' to session #$session_id");
  1834. }
  1835. $course_counter++;
  1836. $pattern = "/\[(.*?)\]/";
  1837. preg_match_all($pattern, $course, $matches);
  1838. if (isset($matches[1])) {
  1839. $course_coaches = $matches[1][0];
  1840. $course_users = $matches[1][1];
  1841. }
  1842. $course_users = explode(',', $course_users);
  1843. $course_coaches = explode(',', $course_coaches);
  1844. // Adding coaches to session course user
  1845. if (!empty($course_coaches)) {
  1846. foreach ($course_coaches as $course_coach) {
  1847. $coach_id = UserManager::get_user_id_from_username($course_coach);
  1848. if ($coach_id !== false) {
  1849. $sql = "INSERT IGNORE INTO $tbl_session_course_user SET
  1850. id_user='$coach_id',
  1851. course_code='$course_code',
  1852. id_session = '$session_id',
  1853. status = 2 ";
  1854. Database::query($sql);
  1855. if ($debug) {
  1856. Log::info("Sessions - Adding course coach: user #$coach_id to course: '$course_code' and session #$session_id");
  1857. }
  1858. } else {
  1859. $error_message .= get_lang('UserDoesNotExist').' : '.$user.'<br />';
  1860. }
  1861. }
  1862. }
  1863. $users_in_course_counter = 0;
  1864. // Adding the relationship "Session - Course - User".
  1865. foreach ($course_users as $user) {
  1866. $user_id = UserManager::get_user_id_from_username($user);
  1867. if ($user_id !== false) {
  1868. $sql = "INSERT IGNORE INTO $tbl_session_course_user SET
  1869. id_user='$user_id',
  1870. course_code='$course_code',
  1871. id_session = '$session_id'";
  1872. Database::query($sql);
  1873. if ($debug) {
  1874. Log::info("Sessions - Adding student: user #$user_id to course: '$course_code' and session #$session_id");
  1875. }
  1876. $users_in_course_counter++;
  1877. } else {
  1878. $error_message .= get_lang('UserDoesNotExist').' : '.$user.'<br />';
  1879. }
  1880. }
  1881. $sql = "UPDATE $tbl_session_course SET nbr_users='$users_in_course_counter' WHERE course_code='$course_code'";
  1882. Database::query($sql);
  1883. $course_info = CourseManager::get_course_information($course_code);
  1884. $inserted_in_course[$course_code] = $course_info['title'];
  1885. } else {
  1886. // TODO: We should create the course as in the XML import.
  1887. }
  1888. if (CourseManager::course_exists($course_code, true)) {
  1889. $list = CourseManager :: get_courses_info_from_visual_code($course_code);
  1890. foreach ($list as $vcourse) {
  1891. if ($vcourse['code'] == $course_code) {
  1892. // Ignore, this has already been inserted.
  1893. } else {
  1894. $coach = api_strstr($course, '[');
  1895. $coach = api_substr($coach, 1, api_strpos($coach,']') - 1);
  1896. // Adding the relationship "Session - Course".
  1897. $sql_course = "INSERT IGNORE INTO $tbl_session_course SET
  1898. course_code = '".$vcourse['code']."',
  1899. id_session='$session_id'";
  1900. Database::query($sql_course);
  1901. if ($debug) {
  1902. Log::info("Sessions - Adding course to session: course: '".$vcourse['code']."' and session #$session_id");
  1903. }
  1904. // adding coachs to session course user
  1905. foreach ($course_coaches as $course_coach) {
  1906. $coach_id = UserManager::get_user_id_from_username($course_coach);
  1907. if ($coach_id !== false) {
  1908. $sql = "INSERT IGNORE INTO $tbl_session_course_user SET
  1909. id_user='$coach_id',
  1910. course_code='{$vcourse['code']}',
  1911. id_session = '$session_id',
  1912. status = 2 ";
  1913. Database::query($sql);
  1914. if ($debug) {
  1915. Log::info("Sessions - Adding coach to session: user #$coach_id course: '".$vcourse['code']."' and session #$session_id");
  1916. }
  1917. } else {
  1918. $error_message .= get_lang('UserDoesNotExist').' : '.$user.'<br />';
  1919. }
  1920. }
  1921. $users_in_course_counter = 0;
  1922. // Adding the relationship "Session - Course - User".
  1923. foreach ($course_users as $user) {
  1924. $user_id = UserManager::get_user_id_from_username($user);
  1925. if ($user_id !== false) {
  1926. $sql = "INSERT IGNORE INTO $tbl_session_course_user SET
  1927. id_user='$user_id',
  1928. course_code='{$vcourse['code']}',
  1929. id_session = '$session_id'";
  1930. Database::query($sql);
  1931. if ($debug) {
  1932. Log::info("Sessions - Adding user to session: user #$user_id course: '".$vcourse['code']."' and session #$session_id");
  1933. }
  1934. $users_in_course_counter++;
  1935. } else {
  1936. $error_message .= get_lang('UserDoesNotExist').' : '.$user.'<br />';
  1937. }
  1938. }
  1939. Database::query("UPDATE $tbl_session_course SET nbr_users='$users_in_course_counter' WHERE course_code='".$vcourse['code']."'");
  1940. }
  1941. }
  1942. $inserted_in_course[$vcourse['code']] = $vcourse['title'];
  1943. }
  1944. }
  1945. $access_url_id = api_get_current_access_url_id();
  1946. UrlManager::add_session_to_url($session_id, $access_url_id);
  1947. $sql_update_users = "UPDATE $tbl_session SET nbr_users='$user_counter', nbr_courses='$course_counter' WHERE id='$session_id'";
  1948. Database::query($sql_update_users);
  1949. }
  1950. }
  1951. return array(
  1952. 'error_message' => $error_message,
  1953. 'session_counter' => $session_counter
  1954. );
  1955. }
  1956. }