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<?php
if( !isset($gCms) ) exit;
if( !$this->CheckPermission('Modify Calendar') && !$this->CheckPermission('Add Calendar Events') &&
    !$this->CheckPermission('Edit My Calendar Events') ) exit;

$userid = null;
if( !$this->CheckPermission('Modify Calendar') ) $userid = get_userid(FALSE) * -1 - 100;

$result = new stdClass;
$result->status = 0;
$result->msg = $this->Lang('error_unknown');

try {
    debug_to_log('admin_ajax_editevent');
    debug_to_log($params);
    $event_id = (int)cge_utils::get_param($params,'event_id');
    $dayDelta = (int)cge_utils::get_param($params,'dayDelta');
    $minuteDelta = (int)cge_utils::get_param($params,'minuteDelta');
    $allDay = (int)cge_utils::get_param($params,'allDay');
    $move = (int)cge_utils::get_param($params,'move',0);
    if( $event_id < 1 ) throw new Exception($this->Lang('error_insufficientparams'));
    if( $dayDelta == 0 && $minuteDelta == 0 && $allDay == 0 ) throw new Exception($this->Lang('error_insufficientparams'));

    // get the event (make sure it's valid, and we have permission to edit it)
    $query = 'SELECT * FROM '.$this->events_table_name.' WHERE event_id = ?';
    $parms = array($event_id);
    if( !is_null($userid) ) {
        $query .= ' AND event_created_by = ?';
        $parms[] = $userid;
    }

    $event = $db->GetRow($query,array($event_id));
    if( !$event ) throw new Exception($this->Lang('error_eventnotfound'));

    $day = 24 * 3600;
    $tdiff = $dayDelta * $day + $minuteDelta * 60;
    $event['event_date_start'] = $db->UnixTimeStamp($event['event_date_start']);
    $event['event_date_end'] = $db->UnixTimeStamp($event['event_date_end']);
    if( $move ) $event['event_date_start'] += $tdiff;
    if( $event['event_date_end'] == 0 ) $event['event_date_end'] = $event['event_date_start'] + 15 * 60; // fifteen minutes if there is no end time.
    $event['event_date_end'] += $tdiff;
    $event['event_all_day'] = $allDay;

    // and save the thing.
    $query = 'UPDATE '.$this->events_table_name.' SET event_date_start = FROM_UNIXTIME(?), event_date_end = FROM_UNIXTIME(?), event_all_day = ?, event_modified_date = NOW()
              WHERE event_id = ?';
    $db->Execute($query,array($event['event_date_start'],$event['event_date_end'],$event['event_all_day'],$event['event_id']));
    $result->status = 1;
}
catch( Exception $e ) {
    $result->msg = $this->GetMessage();
}

echo json_encode($result);
exit;

?>