unitrack_firebase #

Firebase provider for UniTrack. Forwards UniTrack events to Firebase Analytics and bundles optional helpers for FCM (token + push notifications), Crashlytics (non-fatal errors), and Remote Config (resolver chain).

Install #

dependencies:
  unitrack: ^1.0.0
  unitrack_firebase: ^1.0.0

You also need the standard FlutterFire setup:

• Android — android/app/google-services.json + the google-services Gradle plugin.
• iOS — ios/Runner/GoogleService-Info.plist added to the Runner target.

Wire-up Analytics #

import 'package:firebase_core/firebase_core.dart';
import 'package:unitrack/unitrack.dart';
import 'package:unitrack_firebase/unitrack_firebase.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp();

  UniTrack.instance.addProvider(FirebaseProvider(
    superProperties: {'app_segment': 'consumer'},
    userProperties:  {'cohort': 'gold'},
  ));
  await UniTrack.instance.initialize('utk_your_api_key');
  runApp(const MyApp());
}

FirebaseProvider sanitises event + parameter names (Firebase requires alphanumeric + underscore, ≤ 40 chars), coerces non-primitive values to strings, and clamps string params to 100 chars. Anything else passes through untouched.

Messaging (FCM) helper #

Wire UniTrack into your existing FCM callbacks — no swizzling, just one call per site:

import 'package:firebase_messaging/firebase_messaging.dart';
import 'package:unitrack_firebase/firebase_messaging_helper.dart';

void wireFcm() {
  FirebaseMessaging.instance.onTokenRefresh
      .listen(UniTrackFirebaseMessaging.handleTokenUpdate);

  FirebaseMessaging.onMessage
      .listen(UniTrackFirebaseMessaging.handleNotificationReceivedForeground);

  FirebaseMessaging.onMessageOpenedApp
      .listen(UniTrackFirebaseMessaging.handleNotificationClicked);
}

Result: fcm_token_updated + notification events flow through UniTrack → portal + Snowplow + Firebase Analytics.

Crashlytics helper #

import 'package:unitrack_firebase/firebase_crashlytics_helper.dart';

try {
  await riskyCall();
} catch (e, st) {
  await UniTrackFirebaseCrashlytics.recordError(e, st);
}

UniTrackFirebaseCrashlytics.log('entering checkout flow');
UniTrackFirebaseCrashlytics.setCustomKey('cart_size', 3);

recordError does both: full symbolicated stack to Crashlytics, plus an application_error event through UniTrack so the portal sees it too.

Remote Config #

Plug Firebase RC into UniTrack's unified resolver. Order:

1. Portal sdk_config.custom_values[key]
2. Firebase Remote Config (via this helper)
3. Caller's defaultValue

import 'package:unitrack_firebase/firebase_remote_config_helper.dart';

await UniTrackFirebaseRemoteConfig.activate(
  defaults: {'feature_camera_grid': false, 'home_banner_copy': 'Welcome'},
  minimumFetchInterval: const Duration(hours: 1),
);

final on  = await UniTrack.instance.getRemoteValue<bool>(
  'feature_camera_grid', defaultValue: false);
final txt = await UniTrack.instance.getRemoteValue<String>(
  'home_banner_copy', defaultValue: '');

License #

MIT — see LICENSE.