meSendHandleBackgroundRemoteMessage function

Future<void> meSendHandleBackgroundRemoteMessage(RemoteMessage message, { required FirebaseOptions options, })

Handles an FCM message in a background isolate.

Call from a host @pragma('vm:entry-point') top-level function so FirebaseOptions are resolved inside the background isolate:

@pragma('vm:entry-point')
Future<void> firebaseMessagingBackgroundHandler(RemoteMessage message) async {
  await meSendHandleBackgroundRemoteMessage(
    message,
    options: DefaultFirebaseOptions.currentPlatform,
  );
}

In main:

FirebaseMessaging.onBackgroundMessage(firebaseMessagingBackgroundHandler);

Implementation

Future<void> meSendHandleBackgroundRemoteMessage(
  RemoteMessage message, {
  required FirebaseOptions options,
}) async {
  final ready =
      await MeSendPushNotificationDisplay.ensureFirebaseInitializedForBackground(
    options: options,
  );
  if (!ready) {
    return;
  }
  meherySenderLog('SDK background handler invoked', tag: 'Push|background');
  MeSendPushNotificationDisplay.logPayload(message, 'background');
  await MeSendPushNotificationDisplay.handleRemoteMessage(
    message,
    source: 'background',
  );
}