// Author: fruit.com.cn

import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:fruitshorts/core/data/models/drama.dart';
import 'package:fruitshorts/core/data/remote/api_client.dart';
import 'package:fruitshorts/core/data/remote/auth_api.dart';
import 'package:fruitshorts/core/data/repositories/favorite_repository.dart';
import 'package:fruitshorts/core/data/services/auth_controller.dart';
import 'package:fruitshorts/core/data/services/auth_session_store.dart';
import 'package:fruitshorts/core/data/services/favorite_controller.dart';
import 'package:fruitshorts/core/platform/haptics.dart';
import 'package:fruitshorts/core/theme/app_colors.dart';
import 'package:fruitshorts/core/widgets/app_pull_to_refresh.dart';
import 'package:fruitshorts/core/widgets/empty_state.dart';
import 'package:fruitshorts/l10n/app_localizations.dart';
import 'package:fruitshorts/pages/favorites/favorites_page.dart';
import 'package:provider/provider.dart';
import 'package:shared_preferences_platform_interface/in_memory_shared_preferences_async.dart';
import 'package:shared_preferences_platform_interface/shared_preferences_async_platform_interface.dart';

import '../support/fake_http_adapter.dart';
import '../support/fake_haptics.dart';

Drama _card(String id) => Drama(
  id: id,
  title: 'Drama $id',
  synopsis: 'synopsis',
  posterUrl: '/files/$id.png',
  totalEpisodes: 12,
);

void main() {
  setUp(() {
    SharedPreferencesAsyncPlatform.instance =
        InMemorySharedPreferencesAsync.empty();
  });

  testWidgets('should_render_favorite_cards_and_visible_remove_action', (
    tester,
  ) async {
    final auth = await _auth(signedIn: true);
    final favorites = FavoriteController(
      InMemoryFavoriteRepository(
        saved: {'signal', 'city'},
        cards: [_card('signal'), _card('city')],
      ),
    );

    await _pumpPage(tester, auth: auth, favorites: favorites);

    expect(find.byKey(const Key('favorites-page')), findsOneWidget);
    expect(find.byKey(const Key('favorites-back')), findsOneWidget);
    expect(
      tester.widget<Text>(find.byKey(const Key('favorites-count'))).data,
      '2 favorites',
    );
    expect(find.text('Long press a card to remove'), findsNothing);
    expect(find.text('Drama signal'), findsOneWidget);
    expect(find.text('Drama city'), findsOneWidget);
    final title = tester.widget<Text>(
      find.byKey(const Key('favorite-title-signal')),
    );
    expect(title.style?.color, AppColors.onSurface);
    expect(title.style?.fontSize, 15);
    expect(
      tester.getSize(find.byKey(const Key('favorite-cover-signal'))),
      const Size(80, 106),
    );
    expect(find.byKey(const Key('favorite-remove-signal')), findsOneWidget);
    expect(
      tester.getSize(find.byKey(const Key('favorite-remove-signal'))),
      const Size(28, 28),
    );
    expect(find.byIcon(Icons.star_rounded), findsNWidgets(2));
    expect(find.byIcon(Icons.favorite_rounded), findsNothing);
    expect(find.byType(AppPullToRefresh), findsOneWidget);
    expect(
      tester.widget<ListView>(find.byType(ListView)).physics,
      AppPullToRefresh.physics,
    );
    await tester.drag(find.byType(ListView), const Offset(0, 240));
    await tester.pump();
    expect(find.text('Refreshing…'), findsOneWidget);
    await tester.pumpAndSettle();

    await tester.tap(find.byKey(const Key('favorite-remove-signal')));
    await tester.pumpAndSettle();

    expect(find.byKey(const Key('favorite-card-signal')), findsNothing);
  });

  testWidgets('should_keep_card_and_show_failure_when_remove_fails', (
    tester,
  ) async {
    final auth = await _auth(signedIn: true);
    final repository = InMemoryFavoriteRepository(
      saved: {'signal'},
      cards: [_card('signal')],
    )..failRemove = true;
    final favorites = FavoriteController(repository);
    final haptics = FakeHaptics();

    await _pumpPage(tester, auth: auth, favorites: favorites, haptics: haptics);
    await tester.tap(find.byKey(const Key('favorite-remove-signal')));
    await tester.pumpAndSettle();

    expect(haptics.lightImpacts, 1);
    expect(find.text('Drama signal'), findsOneWidget);
    expect(
      find.text('Could not update favorites. Please retry.'),
      findsOneWidget,
    );
  });

  testWidgets('should_show_empty_state_when_favorite_list_is_empty', (
    tester,
  ) async {
    final auth = await _auth(signedIn: true);
    final favorites = FavoriteController(InMemoryFavoriteRepository());

    await _pumpPage(tester, auth: auth, favorites: favorites);

    expect(find.byKey(const Key('favorites-empty')), findsOneWidget);
    expect(find.byType(EmptyState), findsOneWidget);
  });

  testWidgets('should_show_retry_when_favorite_list_fails', (tester) async {
    final auth = await _auth(signedIn: true);
    final repository = InMemoryFavoriteRepository()..failList = true;
    final favorites = FavoriteController(repository);

    await _pumpPage(tester, auth: auth, favorites: favorites);

    expect(find.byKey(const Key('favorites-error')), findsOneWidget);
    expect(find.byKey(const Key('favorites-retry')), findsOneWidget);
  });

  testWidgets(
    'should_show_auth_gate_without_loading_favorites_when_signed_out',
    (tester) async {
      final auth = await _auth(signedIn: false);
      final repository = InMemoryFavoriteRepository(
        saved: {'signal'},
        cards: [_card('signal')],
      );
      final favorites = FavoriteController(repository);

      await _pumpPage(tester, auth: auth, favorites: favorites);

      expect(find.byKey(const Key('auth-gate-panel')), findsOneWidget);
      expect(repository.listCalls, 0);
    },
  );
}

Future<AuthController> _auth({required bool signedIn}) async {
  if (signedIn) {
    SharedPreferencesAsyncPlatform.instance =
        InMemorySharedPreferencesAsync.withData({
          'auth.accessToken': 'test-access',
          'auth.refreshToken': 'test-refresh',
          'auth.user': '{"uid":"1","nickname":"Viewer","avatarUrl":""}',
        });
  }
  final client = ApiClient(
    baseUrl: 'http://127.0.0.1:8081',
    adapter: FakeHttpAdapter(
      (_) async => FakeHttpResponse('{"code":0,"message":"ok","data":null}'),
    ),
  );
  final auth = AuthController(AuthApi(client), AuthSessionStore());
  await auth.load();
  return auth;
}

Future<void> _pumpPage(
  WidgetTester tester, {
  required AuthController auth,
  required FavoriteController favorites,
  FakeHaptics? haptics,
}) async {
  await tester.pumpWidget(
    MultiProvider(
      providers: [
        ChangeNotifierProvider<AuthController>.value(value: auth),
        ChangeNotifierProvider<FavoriteController>.value(value: favorites),
        Provider<Haptics>.value(value: haptics ?? FakeHaptics()),
      ],
      child: MaterialApp(
        locale: const Locale('en'),
        localizationsDelegates: AppLocalizations.localizationsDelegates,
        supportedLocales: AppLocalizations.supportedLocales,
        home: const FavoritesPage(),
      ),
    ),
  );
  await tester.pumpAndSettle();
}