AuthRepository that depends on asynchronous providers

[Veeksi]

Hey,

Great example and thanks for that!

I am thinking how could I implement the same functionality without using Firebase. My authRepositoryProvider uses dio and hive that are initialized asynchronously in appStartupProvider.

@Riverpod(keepAlive: true)
AuthRepository authRepository(AuthRepositoryRef ref) {
  final dio = ref.watch(dioControllerProvider).requireValue;
  final hiveBox = ref.watch(hiveBoxProvider).requireValue;
  return  AuthRepository(hiveBox, dio);
}

@Riverpod(keepAlive: true)
Future<void> appStartup(AppStartupRef ref) async {
  ref.onDispose(() {
    ref.invalidate(pathControllerProvider);
    ref.invalidate(dioControllerProvider);
    ref.invalidate(hiveBoxProvider);
  });

  await ref.watch(pathControllerProvider.future);
  await ref.watch(dioControllerProvider.future);
  await ref.watch(hiveBoxProvider.future);
}

However my application crashes because those dependencies aren't ready at this point:

@riverpod
GoRouter goRouter(GoRouterRef ref) {
  final appStartupState = ref.watch(appStartupProvider);
  
// THIS LINE BLINKS ERROR BECAUSE DIO AND HIVE ARE STILL BEING INITIALIZED
  final authRepository = ref.watch(authRepositoryProvider); 
  ...
}

Any ideas how could I refactor this so that I can listen authRepository changes like your example does?

[Veeksi]

For example this kind of solution works but feels like it is not the best one:

@riverpod
GoRouter goRouter(GoRouterRef ref) {
  print("Go router provider");
  final appStartupState = ref.watch(appStartupProvider);

  if (appStartupState.isLoading || appStartupState.hasError) {
    return GoRouter(
      initialLocation: "/startup",
      debugLogDiagnostics: true,
      routes: [
        GoRoute(
          path: '/startup',
          pageBuilder: (context, state) => NoTransitionPage(
            child: AppStartupWidget(
              onLoaded: (_) => const SizedBox.shrink(),
            ),
          ),
        ),
      ],
    );
  }

  final authRepository = ref.watch(authRepositoryProvider);

  return GoRouter(
     ...
  )
}

What do you think @bizz84