Flutter advice on how to startup load a user

Question

I have a Flutter app that uses Riverpod as State management and Firebase Realtime database.

Everytime a user launch the app, i need to fetch the current user to ensure where to route the user (landing page, login page, admin page or home page).

So there are two ways that i figured i could do this and i need advice on which one is better (or if both are bad):

Method 1 - Load it in the main before launching my widget:

void main() async {
  // Declare a glam user variable
  GlamUser? glamUser;

  // Ensure the widgets are initialized
  WidgetsFlutterBinding.ensureInitialized();

  // Load firebase
  await Firebase.initializeApp(
    options: DefaultFirebaseOptions.currentPlatform,
  );

  // Initialize the shared preferences
  final prefs = await SharedPreferences.getInstance();

  try {
    // Get the current user from firebase
    final user = AuthService().currentUser;

    // If the user is not null, get the user from the database
    if (user != null) {
      glamUser = await GlamUsersImpl().getById(user.uid);
    }
  } catch (e) {
    print("Error $e");
  }

  // Run the main app
  runApp(
    ProviderScope(
      overrides: [
        // Intialize the app settings repository
        settingsRepositoryProvider.overrideWithValue(
          AppSettingsImpl(prefs),
        ),
      ],
      child: MyApp(
        glamUser: glamUser,
      ),
    ),
  );
}

Why i do this here because the getUser method needs to be async and this seems to be a good place to do it.

Method 2 - Load it in my widget before MaterialApp:

class MyApp extends ConsumerWidget {

  // Constructor
  const MyApp({
    super.key,
  });

  // Creare
  @override
  Widget build(BuildContext context, WidgetRef ref) {
    // Get the user
    final glamUser = ref.watch(getGlamUser).when(data, error, loading);

Method 2 seems to have more work in it because i need to handle loading, error and loaded widget views and then return my MaterialApp based on this but it seems better when it comes to error handling

Method 1 seems to be more quickly but prone to error.

How would you guys do it ?