chat_print_error('ERROR', get_string('invaliduserid', 'error'));
}
if (!($chat = $DB->get_record('chat', array('id' => $chatuser->chatid)))) {
chat_print_error('ERROR', get_string('invalidcoursemodule', 'error'));
}
if (!($cm = get_coursemodule_from_instance('chat', $chatuser->chatid, $course->id))) {
chat_print_error('ERROR', get_string('invalidcoursemodule', 'error'));
}
// setup $PAGE so that format_text will work properly
$PAGE->set_cm($cm, $course, $chat);
if ($CFG->chat_use_cache) {
$cache = new file_cache();
$users = $cache->get('user');
if (empty($users)) {
$users = chat_get_users($chatuser->chatid, $chatuser->groupid, $cm->groupingid);
$cache->set('user', $users);
}
} else {
$users = chat_get_users($chatuser->chatid, $chatuser->groupid, $cm->groupingid);
}
$users = format_user_list($users, $course);
if (!empty($chat_init)) {
$response['users'] = $users;
echo json_encode($response);
exit;
}
// force deleting of timed out users if there is a silence in room or just entering
if (time() - $chat_lasttime > $CFG->chat_old_ping) {
// must be done before chat_get_latest_message!!!
chat_delete_old_users();
}
