auth_notifier.dart

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import 'dart:async';
import 'package:flutter/material.dart';
import '../../features/auth/presentation/bloc/authentication_bloc/authentication_bloc.dart';
import '../services/fast_sign_in_service.dart';
 
class AuthNotifier extends ChangeNotifier {
  final AuthenticationBloc _authBloc;
  final FastSignInService _fastSignInService = FastSignInService();
  late final StreamSubscription<AuthenticationState> _subscription;
  bool _isAuthenticated = false;
 
  AuthNotifier(this._authBloc) {
    _isAuthenticated = _authBloc.state is AuthenticatedState;
 
    _subscription = _authBloc.stream.listen((state) {
      final wasAuthenticated = _isAuthenticated;
      _isAuthenticated = state is AuthenticatedState;
 
      if (wasAuthenticated != _isAuthenticated) {
        notifyListeners();
      }
    });
 
    // Also listen to fast sign-in state changes
    _fastSignInService.isFastSignInActive
        .addListener(_onFastSignInStateChanged);
  }
 
  void _onFastSignInStateChanged() {
    notifyListeners();
  }
 
  bool get isAuthenticated => _isAuthenticated;
 
  @override
  void dispose() {
    _subscription.cancel();
    _fastSignInService.isFastSignInActive
        .removeListener(_onFastSignInStateChanged);
    super.dispose();
  }
}