/**
* Synchronizes events of given calendar.
*
* @param int Calendar id.
*/
private function _sync_calendar($cal_id)
{
self::debug_log("Syncing calendar id \"{$cal_id}\".");
if (!($cal_sync = $this->sync_clients[$cal_id])) {
self::debug_log("No sync client for calendar id \"{$cal_id}\".");
return;
}
$events = array();
// Ignore recurrence events
foreach ($this->_load_all_events($cal_id) as $event) {
if ($event["recurrence_id"] == 0) {
array_push($events, $event);
}
}
$updates = $cal_sync->get_updates($events);
if ($updates) {
list($updates, $synced_event_ids) = $updates;
$updated_event_ids = $this->_perform_updates($updates);
// Delete events that are not in sync or updated.
foreach ($events as $event) {
if (array_search($event["id"], $updated_event_ids) === false && array_search($event["id"], $synced_event_ids) === false) {
// Assume: Event was not updated, so delete!
parent::remove_event($event, true);
self::debug_log("Remove event \"" . $event["id"] . "\".");
}
}
$cal_props = $this->_get_ical_props($cal_id, self::OBJ_TYPE_ICAL);
$cal_props["tag"] = $cal_sync->get_etag();
$this->_set_ical_props($cal_id, self::OBJ_TYPE_ICAL, $cal_props);
}
self::debug_log("Successfully synced calendar id \"{$cal_id}\".");
}
/**
* Remove a single event from the database and from caldav server.
*
* @param array Hash array with event properties
* @param boolean Remove record irreversible
*
* @see calendar_driver::remove_event()
*/
public function remove_event($obj, $force = true)
{
$obj = $this->_get_id($obj);
$event_id = (int) $obj['id'];
$cal_id = (int) $obj['calendar'];
$savemode = $obj['_savemode'] ? $obj['_savemode'] : 'all';
$event = parent::get_master($obj);
if ($event['recurrence_id']) {
$event_id = (int) $event['recurrence_id'];
$event['id'] = $event_id;
unset($event['recurrence_id']);
}
if (!($props = $this->_get_caldav_props($event_id, self::OBJ_TYPE_VEVENT))) {
$savemode = 'current';
$event = parent::get_event($event['uid']);
$props = $this->_get_caldav_props($event['id'], self::OBJ_TYPE_VEVENT);
}
if (parent::remove_event($obj, $force) && is_array($props)) {
$sync_client = $this->sync_clients[$cal_id];
switch ($savemode) {
case 'current':
case 'future':
$event = parent::get_master($event);
$event = $this->_save_preprocess($event);
$success = $sync_client->update_event($event, $props);
break;
default:
// all is default
$success = $sync_client->remove_event($props);
break;
}
if ($success === true) {
self::debug_log("Successfully removed event \"{$event_id}\".");
} else {
self::debug_log("Unkown error while removing caldav event \"{$event_id}\", force sync calendar \"{$cal_id}\"!");
}
// Trigger calendar sync to update ctags and etags.
$this->_sync_calendar($cal_id);
return $success;
}
return false;
// Unkown error.
}
