/**
* Apply the given changes to already existing exceptions
*/
protected function update_recurrence_exceptions(&$master, $event, $old, $savemode)
{
$saved = false;
$existing = null;
// determine added and removed attendees
$added_attendees = $removed_attendees = array();
if ($savemode == 'future') {
$old_attendees = $current_attendees = array();
foreach ((array) $old['attendees'] as $attendee) {
$old_attendees[] = $attendee['email'];
}
foreach ((array) $event['attendees'] as $attendee) {
$current_attendees[] = $attendee['email'];
if (!in_array($attendee['email'], $old_attendees)) {
$added_attendees[] = $attendee;
}
}
$removed_attendees = array_diff($old_attendees, $current_attendees);
}
foreach ($master['recurrence']['EXCEPTIONS'] as $i => $exception) {
// update a specific instance
if ($exception['_instance'] == $old['_instance']) {
$existing = $i;
// check savemode against existing exception mode.
// if matches, we can update this existing exception
if ((bool) $exception['thisandfuture'] === ($savemode == 'future')) {
$event['_instance'] = $old['_instance'];
$event['thisandfuture'] = $old['thisandfuture'];
$event['recurrence_date'] = $old['recurrence_date'];
$master['recurrence']['EXCEPTIONS'][$i] = $event;
$saved = true;
}
}
// merge the new event properties onto future exceptions
if ($savemode == 'future' && $exception['_instance'] >= $old['_instance']) {
unset($event['thisandfuture']);
self::merge_exception_data($master['recurrence']['EXCEPTIONS'][$i], $event, array('attendees'));
if (!empty($added_attendees) || !empty($removed_attendees)) {
calendar::merge_attendee_data($master['recurrence']['EXCEPTIONS'][$i], $added_attendees, $removed_attendees);
}
}
}
/*
// we could not update the existing exception due to savemode mismatch...
if (!$saved && $existing !== null && $master['recurrence']['EXCEPTIONS'][$existing]['thisandfuture']) {
// ... try to move the existing this-and-future exception to the next occurrence
foreach ($this->get_recurring_events($master, $existing['start']) as $candidate) {
// our old this-and-future exception is obsolete
if ($candidate['thisandfuture']) {
unset($master['recurrence']['EXCEPTIONS'][$existing]);
$saved = true;
break;
}
// this occurrence doesn't yet have an exception
else if (!$candidate['isexception']) {
$event['_instance'] = $candidate['_instance'];
$event['recurrence_date'] = $candidate['recurrence_date'];
$master['recurrence']['EXCEPTIONS'][$i] = $event;
$saved = true;
break;
}
}
}
*/
// set link to top-level exceptions
$master['exceptions'] =& $master['recurrence']['EXCEPTIONS'];
// returning false here will add a new exception
return $saved;
}
/**
* Update the participant status for the given attendees
*
* @see calendar_driver::update_attendees()
*/
public function update_attendees(&$event, $attendees)
{
$success = $this->edit_event($event, true);
// apply attendee updates to recurrence exceptions too
if ($success && $event['_savemode'] == 'all' && !empty($event['recurrence']) && empty($event['recurrence_id']) && ($exceptions = $this->_load_exceptions($event))) {
foreach ($exceptions as $exception) {
calendar::merge_attendee_data($exception, $attendees);
$this->_update_event($exception, false);
}
}
return $success;
}
