/**
* Subscribe to notifications for the current user.
*
* @param Google_MirrorService $service Authorized Mirror service.
* @param string $collection Collection to subscribe to (supported
* values are "timeline" and "locations").
* @param string $user_token Opaque token used by the Service to
* identify the user the notification pings
* are sent for (recommended).
* @param string $callback_url URL receiving notification pings (must be HTTPS).
*/
function subscribe_to_notifications($service, $collection, $user_token, $callback_url)
{
try {
$subscription = new Google_Subscription();
$subscription->setCollection($collection);
$subscription->setUserToken($user_token);
$subscription->setCallbackUrl($callback_url);
$service->subscriptions->insert($subscription);
return "Subscription inserted!";
} catch (Exception $e) {
return 'An error occurred: ' . $e->getMessage();
}
}
