if ($sub = APNSSubscriber::create()) {
$route = $_REQUEST['route'];
$params = Array(
'route_id' => $route,
'stop_id' => $_REQUEST['stop'],
);
// unsubscribe any existing subscriptions for the same route/stop
if ($sub->unsubscribe("ShuttleSubscription", $params) && $command == 'unsubscribe') {
$data = Array('success' => $command);
} else {
$request_time = isset($_REQUEST['time']) ? $_REQUEST['time'] : time();
$interval = ShuttleSchedule::get_interval($route);
if (($numshuttles = ShuttleSchedule::count_shuttles_running($route, $request_time)) > 1) {
$interval /= $numshuttles;
}
$start_time = $request_time - intval($interval / 2);
$expire_time = $start_time + intval($interval * 1.5);
$params['start_time'] = $start_time;
if ($sub->subscribe("ShuttleSubscription", $params))
$data = Array('success' => $command,
'start_time' => $start_time,
'expire_time' => $expire_time);
}
}
break;
}