import 'dart:async';
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:motorcycle_dash/features/records/records_service.dart';
import 'package:motorcycle_dash/features/social/friends_screen.dart';
import 'package:motorcycle_dash/features/social/rider_profile_screen.dart';
import 'package:motorcycle_dash/services/auth/auth_providers.dart';
import 'package:motorcycle_dash/services/auth/auth_service.dart';
import 'package:motorcycle_dash/services/auth/auth_state.dart';
import 'package:motorcycle_dash/services/auth/auth_user.dart';
import 'package:motorcycle_dash/services/social/rider_profile_models.dart';
import 'package:motorcycle_dash/services/social/social_providers.dart';
import 'package:shared_preferences/shared_preferences.dart';

class _FakeAuth implements AuthService {
  @override Future<void> ensureBackendIdentity() async {}

  final _states = StreamController<AuthState>.broadcast();
  AuthUser? user;

  _FakeAuth({this.user});

  @override
  Stream<AuthState> get authStateChanges => _states.stream;

  @override
  AuthState get currentState => user == null
      ? const AuthState.unauthenticated(isFirebaseConfigured: true)
      : (user!.isAnonymous
          ? AuthState.anonymous(user!, isFirebaseConfigured: true)
          : AuthState.authenticated(user!, isFirebaseConfigured: true));

  @override
  AuthUser? get currentUser => user;

  @override
  bool get isConfigured => true;

  @override
  bool get isEmailVerified => true;

  @override
  Future<void> deleteCurrentUser() async {}

  @override
  void dispose() => _states.close();

  @override
  Future<String?> getIdToken([bool forceRefresh = false]) async => 'token';

  @override
  Future<void> reauthenticate({String? password}) async {}

  @override
  Future<void> reloadCurrentUser() async {}

  @override
  Future<void> sendEmailVerification() async {}

  @override
  Future<void> sendPasswordResetEmail(String email) async {}

  @override
  Future<void> signInAnonymously() async {}

  @override
  Future<void> signInWithEmailAndPassword(String email, String password) async {}

  @override
  Future<void> createUserWithEmailAndPassword(String email, String password,
      {String? displayName}) async {}

  @override
  Future<void> signInWithGoogle() async {}

  @override
  Future<void> signOut() async {}
}

void main() {
  TestWidgetsFlutterBinding.ensureInitialized();
  late SharedPreferences prefs;

  setUp(() async {
    SharedPreferences.setMockInitialValues({});
    prefs = await SharedPreferences.getInstance();
  });

  Widget buildTestable(Widget child, List<Override> overrides) {
    return ProviderScope(
      overrides: [
        sharedPreferencesProvider.overrideWithValue(prefs),
        ...overrides,
      ],
      child: MaterialApp(home: child),
    );
  }

  group('RiderProfileScreen Widget Tests', () {
    testWidgets('shows account required notice when signed out', (tester) async {
      final fakeAuth = _FakeAuth(user: null);

      await tester.pumpWidget(
        buildTestable(
          const RiderProfileScreen(),
          [authServiceProvider.overrideWithValue(fakeAuth)],
        ),
      );
      await tester.pumpAndSettle();

      expect(find.text('MOTORCLOUD ACCOUNT REQUIRED'), findsOneWidget);
      expect(find.text('SIGN IN OR REGISTER'), findsOneWidget);
    });

    testWidgets('renders profile form and privacy controls when authenticated', (tester) async {
      final user = const AuthUser(
        uid: 'pilot_1',
        email: 'pilot@example.com',
        displayName: 'Test Pilot',
      );
      final fakeAuth = _FakeAuth(user: user);

      final existingProfile = RiderProfile(
        uid: 'pilot_1',
        handle: 'test_pilot',
        displayName: 'Test Pilot',
        bio: 'Speed and curves.',
        region: 'Tail of the Dragon',
        avatarPreset: 'helmet_cyan',
        createdAt: DateTime.now(),
        updatedAt: DateTime.now(),
      );

      await tester.pumpWidget(
        buildTestable(
          const RiderProfileScreen(),
          [
            authServiceProvider.overrideWithValue(fakeAuth),
            myRiderProfileProvider.overrideWith((ref) => Stream.value(existingProfile)),
          ],
        ),
      );
      await tester.pumpAndSettle();

      expect(find.text('Rider Profile'), findsOneWidget);
      expect(find.text('@test_pilot'), findsWidgets);
      expect(find.text('Test Pilot'), findsWidgets);
      expect(find.text('Speed and curves.'), findsWidgets);
      expect(find.text('Tail of the Dragon'), findsWidgets);

      // Privacy switches
      expect(find.text('PRIVACY CONTROLS'), findsOneWidget);
      expect(find.text('Discoverable by Handle'), findsOneWidget);
      expect(find.text('Public Profile'), findsOneWidget);
      expect(find.text('Allow Friend Requests'), findsOneWidget);

      // Save button
      expect(find.text('SAVE PROFILE'), findsOneWidget);
    });
  });

  group('FriendsScreen Widget Tests', () {
    testWidgets('shows account required notice when signed out', (tester) async {
      final fakeAuth = _FakeAuth(user: null);

      await tester.pumpWidget(
        buildTestable(
          const FriendsScreen(),
          [authServiceProvider.overrideWithValue(fakeAuth)],
        ),
      );
      await tester.pumpAndSettle();

      expect(find.text('MOTORCLOUD ACCOUNT REQUIRED'), findsOneWidget);
    });

    testWidgets('renders tabs and empty states when authenticated', (tester) async {
      final user = const AuthUser(
        uid: 'rider_1',
        email: 'rider@example.com',
        displayName: 'Rider One',
      );
      final fakeAuth = _FakeAuth(user: user);

      await tester.pumpWidget(
        buildTestable(
          const FriendsScreen(),
          [
            authServiceProvider.overrideWithValue(fakeAuth),
            myFriendsProvider.overrideWith((ref) => Stream.value([])),
            myIncomingRequestsProvider.overrideWith((ref) => Stream.value([])),
            myOutgoingRequestsProvider.overrideWith((ref) => Stream.value([])),
          ],
        ),
      );
      await tester.pumpAndSettle();

      expect(find.text('Friends (0)'), findsOneWidget);
      expect(find.text('Requests'), findsOneWidget);
      expect(find.text('Find Riders'), findsOneWidget);
      expect(find.text('NO FRIENDS ADDED YET'), findsOneWidget);
    });

    testWidgets('displays friend item with action menu', (tester) async {
      final user = const AuthUser(
        uid: 'rider_1',
        email: 'rider@example.com',
        displayName: 'Rider One',
      );
      final fakeAuth = _FakeAuth(user: user);

      final friendsList = [
        FriendSummary(
          uid: 'friend_99',
          handle: 'corner_carver',
          displayName: 'Corner Carver',
          avatarPreset: 'tach_neon',
          friendedAt: DateTime.now(),
        ),
      ];

      await tester.pumpWidget(
        buildTestable(
          const FriendsScreen(),
          [
            authServiceProvider.overrideWithValue(fakeAuth),
            myFriendsProvider.overrideWith((ref) => Stream.value(friendsList)),
            myIncomingRequestsProvider.overrideWith((ref) => Stream.value([])),
            myOutgoingRequestsProvider.overrideWith((ref) => Stream.value([])),
          ],
        ),
      );
      await tester.pumpAndSettle();

      expect(find.text('Friends (1)'), findsOneWidget);
      expect(find.text('Corner Carver'), findsOneWidget);
      expect(find.text('@corner_carver'), findsOneWidget);
    });
  });
}