chat_functions.lib.php 3.9 KB

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  1. <?php
  2. /* For licensing terms, see /license.txt */
  3. /**
  4. * @author isaac flores paz
  5. * @param integer
  6. * @return void
  7. */
  8. function exit_of_chat($user_id) {
  9. $list_course = array();
  10. $list_course = CourseManager::get_courses_list_by_user_id($user_id);
  11. $group_id = intval($_SESSION['id_group']);
  12. $session_id = intval($_SESSION['id_session']);
  13. $extra_condition = '';
  14. if (!empty($group_id)) {
  15. $extra_condition = " AND to_group_id = '$group_id'";
  16. } else {
  17. $extra_condition = api_get_session_condition($session_id);
  18. }
  19. foreach ($list_course as $courses) {
  20. $response = user_connected_in_chat($user_id,$courses['db_name']);
  21. if ($response === true) {
  22. $tbl_chat_connected = Database::get_course_chat_connected_table($courses['db_name']);
  23. $sql = 'DELETE FROM '.$tbl_chat_connected.' WHERE user_id='.$user_id.$extra_condition;
  24. Database::query($sql);
  25. }
  26. }
  27. }
  28. /**
  29. * @author isaac flores paz
  30. * @param integer the user id
  31. * @param string the database name
  32. * @return boolean
  33. */
  34. function user_connected_in_chat ($user_id, $database_name) {
  35. $tbl_chat_connected = Database::get_course_chat_connected_table($database_name);
  36. $group_id = intval($_SESSION['id_group']);
  37. $session_id = intval($_SESSION['id_session']);
  38. $extra_condition = '';
  39. if (!empty($group_id)) {
  40. $extra_condition = " AND to_group_id = '$group_id'";
  41. } else {
  42. $extra_condition = api_get_session_condition($session_id);
  43. }
  44. $sql = 'SELECT COUNT(*) AS count FROM '.$tbl_chat_connected .' c WHERE user_id='.$user_id.$extra_condition;
  45. $result = Database::query($sql);
  46. $count = Database::fetch_array($result,'ASSOC');
  47. return $count['count'] == 1;
  48. }
  49. /**
  50. * @param string $database_name (optional)
  51. * @return void
  52. */
  53. function disconnect_user_of_chat($database_name = '') {
  54. $list_info_user_in_chat = array();
  55. if (!empty($database_name)) {
  56. $list_info_user_in_chat = users_list_in_chat($database_name);
  57. } else {
  58. $list_info_user_in_chat = users_list_in_chat();
  59. }
  60. $cd_date = date('Y-m-d',time());
  61. $cdate_h = date('H',time());
  62. $cdate_m = date('i',time());
  63. $cdate_s = date('s',time());
  64. $cd_count_time_seconds = $cdate_h*3600 + $cdate_m*60 + $cdate_s;
  65. if (is_array($list_info_user_in_chat) && count($list_info_user_in_chat) > 0 ) {
  66. foreach ($list_info_user_in_chat as $list_info_user) {
  67. $date_db_date = date('Y-m-d', strtotime($list_info_user['last_connection']));
  68. $date_db_h = date('H', strtotime($list_info_user['last_connection']));
  69. $date_db_m = date('i', strtotime($list_info_user['last_connection']));
  70. $date_db_s = date('s', strtotime($list_info_user['last_connection']));
  71. $date_count_time_seconds=$date_db_h*3600 + $date_db_m*60 + $date_db_s;
  72. if ($cd_date == $date_db_date) {
  73. if (($cd_count_time_seconds - $date_count_time_seconds) > 5) {
  74. $tbl_chat_connected = Database::get_course_chat_connected_table();
  75. if (!empty($database_name)) {
  76. $tbl_chat_connected = Database::get_course_chat_connected_table($database_name);
  77. }
  78. $sql = 'DELETE FROM '.$tbl_chat_connected.' WHERE user_id='.$list_info_user['user_id'];
  79. Database::query($sql);
  80. }
  81. }
  82. }
  83. }
  84. }
  85. /**
  86. * @param string $database_name (optional)
  87. * @return array user list in chat
  88. */
  89. function users_list_in_chat ($database_name = '') {
  90. $list_users_in_chat = array();
  91. $tbl_chat_connected = Database::get_course_chat_connected_table($database_name);
  92. $group_id = intval($_SESSION['id_group']);
  93. $session_id = intval($_SESSION['id_session']);
  94. $extra_condition = '';
  95. if (!empty($group_id)) {
  96. $extra_condition = " WHERE to_group_id = '$group_id'";
  97. } else{
  98. $extra_condition = api_get_session_condition($session_id, false);
  99. }
  100. $sql = 'SELECT user_id,last_connection FROM '.$tbl_chat_connected.$extra_condition;
  101. $result = Database::query($sql);
  102. while ($row = Database::fetch_array($result, 'ASSOC')) {
  103. $list_users_in_chat[] = $row;
  104. }
  105. return $list_users_in_chat;
  106. }