/**
* Cancel a user who signed up earlier
*
* @param class $session Record from the webinar_sessions table
* @param integer $userid ID of the user to remove from the session
* @param bool $forcecancel Forces cancellation of sessions that have already occurred
* @param string $errorstr Passed by reference. For setting error string in calling function
* @param string $cancelreason Optional justification for cancelling the signup
*/
function webinar_user_cancel($session, $userid = false, $forcecancel = false, &$errorstr = null, $cancelreason = '')
{
if (!$userid) {
global $USER;
$userid = $USER->id;
}
// if $forcecancel is set, cancel session even if already occurred
// used by webinar_delete_session()
if (!$forcecancel) {
$timenow = time();
// don't allow user to cancel a session that has already occurred
if (webinar_has_session_started($session, $timenow)) {
$errorstr = get_string('error:eventoccurred', 'webinar');
return false;
}
}
if (webinar_user_cancel_submission($session->id, $userid, $cancelreason)) {
webinar_remove_bookings_from_user_calendar($session, $userid);
webinar_update_attendees($session);
return true;
}
$errorstr = get_string('error:cancelbooking', 'webinar');
return false;
}
// invalid userid
}
if (webinar_user_cancel($session, $removeuser, true, $cancelerr)) {
// Notify the user of the cancellation if the session hasn't started yet
$timenow = time();
if (!$suppressemail and !webinar_has_session_started($session, $timenow)) {
webinar_send_cancellation_notice($webinar, $session, $removeuser);
}
} else {
$errors[] = $cancelerr;
$erruser = $DB->get_record('user', array('id' => $removeuser), 'id, firstname, lastname');
$errors[] = get_string('error:removeattendee', 'webinar', fullname($erruser));
}
}
// Update attendees
webinar_update_attendees($session);
$user = $DB->get_record('user', array('id' => $removeuser));
//Unregister this user from this webinar through Adobe Connect API call
cancelsignup_meeting($webinar, $session, $user);
//Send cancel registration email to user
send_email_cancelsignup($webinar, $session, $cm, $user);
} elseif ($showall) {
$searchtext = '';
$previoussearch = 0;
}
}
}
/// Main page
$pagetitle = format_string($webinar->name);
$navlinks[] = array('name' => $strwebinars, 'link' => "index.php?id={$course->id}", 'type' => 'title');
$navlinks[] = array('name' => $pagetitle, 'link' => "view.php?f={$webinar->id}", 'type' => 'activityinstance');
