// Author: fruit.com.cn

import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:fruitshorts/app.dart';
import 'package:fruitshorts/core/data/models/drama.dart';
import 'package:fruitshorts/core/data/models/watch_progress.dart';
import 'package:fruitshorts/core/data/repositories/favorite_repository.dart';
import 'package:fruitshorts/core/data/repositories/playback_repository.dart';
import 'package:fruitshorts/core/data/repositories/watch_history_repository.dart';
import 'package:fruitshorts/core/theme/app_colors.dart';
import 'package:fruitshorts/core/theme/app_dimens.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_catalog.dart';
import '../support/fake_category.dart';
import '../support/fake_interaction_repositories.dart';
import '../support/widget_player.dart';

void main() {
  testWidgets('should_render_following_tabs_grid_and_edit_actions', (
    tester,
  ) async {
    _signIn();
    final catalog = FakeCatalogRepository();
    await tester.pumpWidget(
      _app(
        catalog: catalog,
        favorites: InMemoryFavoriteRepository(
          cards: catalog.dramas.take(1).toList(),
          saved: {catalog.dramas.first.id},
        ),
      ),
    );
    await tester.pumpAndSettle();
    await tester.tap(find.byKey(const Key('tab-follow')));
    await tester.pumpAndSettle();

    expect(find.byKey(const Key('following-page')), findsOneWidget);
    expect(find.byKey(const Key('following-tab-favorites')), findsOneWidget);
    expect(find.byKey(const Key('following-tab-history')), findsOneWidget);
    expect(find.byKey(const Key('following-tab-reserve')), findsNothing);
    expect(find.byKey(const Key('following-favorites-grid')), findsOneWidget);
    expect(find.byKey(const Key('following-add-card')), findsOneWidget);
    expect(find.byType(CustomScrollView), findsWidgets);
    final tab = tester.widget<AnimatedDefaultTextStyle>(
      find.descendant(
        of: find.byKey(const Key('following-tab-favorites')),
        matching: find.byType(AnimatedDefaultTextStyle),
      ),
    );
    expect(tab.style.fontSize, AppDimens.followingTabFont);
    expect(tab.style.fontWeight, FontWeight.w600);
    expect(tab.style.color, AppColors.textPrimary);
    final editIcon = tester.widget<Icon>(find.byIcon(Icons.edit_outlined));
    expect(editIcon.size, AppDimens.followingEditIconSize);
    expect(editIcon.color, AppColors.textTabInactive);
    final grid = tester.widget<SliverGrid>(
      find.descendant(
        of: find.byKey(const Key('following-favorites-grid')),
        matching: find.byType(SliverGrid),
      ),
    );
    final delegate =
        grid.gridDelegate as SliverGridDelegateWithFixedCrossAxisCount;
    expect(delegate.crossAxisCount, 3);
    expect(delegate.crossAxisSpacing, AppDimens.followingGridGap);
    expect(delegate.mainAxisSpacing, AppDimens.followingGridRowGap);
    expect(delegate.mainAxisExtent, greaterThan(0));
    final card = find.byKey(const Key('following-card-the-signal-demo'));
    final coverFinder = find.byKey(
      const Key('following-cover-the-signal-demo'),
    );
    final cover = tester.widget<AspectRatio>(coverFinder);
    expect(cover.aspectRatio, AppDimens.cardCoverAspectRatio);
    final coverClip = tester.widget<ClipRRect>(
      find.descendant(
        of: find.byKey(const Key('following-cover-the-signal-demo')),
        matching: find.byType(ClipRRect),
      ),
    );
    expect(
      coverClip.borderRadius,
      BorderRadius.circular(AppDimens.homeCardRadius),
    );
    final titleFinder = find.descendant(
      of: card,
      matching: find.text('The Signal'),
    );
    final title = tester.widget<Text>(titleFinder);
    expect(title.style?.fontSize, AppDimens.cardTitleFont);
    expect(title.style?.fontWeight, FontWeight.w500);
    expect(title.style?.height, AppDimens.cardTitleLineHeight);
    final views = tester.widget<Text>(
      find.descendant(
        of: find.byKey(const Key('following-views-the-signal-demo')),
        matching: find.byType(Text),
      ),
    );
    expect(views.style?.fontSize, AppDimens.cardPlayCountFont);
    expect(views.style?.fontWeight, FontWeight.w400);
    expect(
      find.descendant(
        of: coverFinder,
        matching: find.byKey(const Key('following-views-the-signal-demo')),
      ),
      findsOneWidget,
    );
    expect(views.style?.color, AppColors.textPrimary);
    expect(
      find.descendant(
        of: find.byKey(const Key('following-views-the-signal-demo')),
        matching: find.byIcon(Icons.local_fire_department_rounded),
      ),
      findsOneWidget,
    );
    expect(
      tester.getTopLeft(titleFinder).dx,
      tester.getTopLeft(coverFinder).dx,
    );
    expect(
      tester.getTopLeft(card).dx,
      lessThan(
        tester.getTopLeft(find.byKey(const Key('following-add-card'))).dx,
      ),
    );

    await tester.tap(find.byKey(const Key('following-edit')));
    await tester.pumpAndSettle();
    expect(
      find.byKey(const Key('following-remove-the-signal-demo')),
      findsOneWidget,
    );

    await tester.tap(find.byKey(const Key('following-remove-the-signal-demo')));
    await tester.pumpAndSettle();
    expect(find.byType(AlertDialog), findsOneWidget);
    await tester.tap(
      find.descendant(
        of: find.byType(AlertDialog),
        matching: find.byType(FilledButton),
      ),
    );
    await tester.pumpAndSettle();

    expect(
      find.byKey(const Key('following-remove-the-signal-demo')),
      findsNothing,
    );
    expect(find.byIcon(Icons.edit_outlined), findsOneWidget);
    expect(
      find.byKey(const Key('following-card-the-signal-demo')),
      findsNothing,
    );

    await tester.tap(find.byKey(const Key('following-tab-history')));
    await tester.pumpAndSettle();
    expect(find.byKey(const Key('following-history-empty')), findsOneWidget);
  });

  testWidgets('should_show_auth_gate_when_signed_out', (tester) async {
    SharedPreferencesAsyncPlatform.instance =
        InMemorySharedPreferencesAsync.empty();
    await tester.pumpWidget(_app(catalog: FakeCatalogRepository()));
    await tester.pumpAndSettle();
    await tester.tap(find.byKey(const Key('tab-follow')));
    await tester.pumpAndSettle();

    expect(find.byKey(const Key('auth-gate-panel')), findsOneWidget);
    expect(find.byKey(const Key('following-favorites-grid')), findsNothing);
  });

  testWidgets('should_show_empty_favorites_and_history', (tester) async {
    _signIn();
    await tester.pumpWidget(_app(catalog: FakeCatalogRepository()));
    await tester.pumpAndSettle();
    await tester.tap(find.byKey(const Key('tab-follow')));
    await tester.pumpAndSettle();

    expect(find.byKey(const Key('following-add-card')), findsOneWidget);
    expect(find.byKey(const Key('following-favorites-empty')), findsNothing);
    await tester.tap(find.byKey(const Key('following-tab-history')));
    await tester.pumpAndSettle();
    expect(find.byKey(const Key('following-history-empty')), findsOneWidget);
  });

  testWidgets('should_render_history_metadata_without_detail_fetch', (
    tester,
  ) async {
    _signIn();
    final catalog = _CountingCatalogRepository();
    await tester.pumpWidget(
      _app(
        catalog: catalog,
        history: InMemoryWatchHistoryRepository(
          seed: [
            WatchProgress(
              dramaId: 'the-signal-demo',
              episodeId: 'the-signal-demo-3',
              dramaTitle: 'Server title',
              dramaCover: '/files/server-cover.jpg',
              episodeNumber: 3,
              totalEpisodes: 8,
              position: const Duration(seconds: 25),
              duration: const Duration(seconds: 100),
            ),
          ],
        ),
      ),
    );
    await tester.pumpAndSettle();
    await tester.tap(find.byKey(const Key('tab-follow')));
    await tester.pumpAndSettle();
    await tester.tap(find.byKey(const Key('following-tab-history')));
    await tester.pumpAndSettle();

    expect(find.text('Server title'), findsOneWidget);
    expect(find.text('Episode 3 / 8 total'), findsOneWidget);
    expect(find.text('Watched 25%'), findsOneWidget);
    expect(
      find.byKey(const Key('following-history-card-the-signal-demo')),
      findsOneWidget,
    );
    expect(
      find.byKey(const Key('following-history-continue-the-signal-demo')),
      findsOneWidget,
    );
    expect(
      find.byKey(const Key('following-progress-the-signal-demo')),
      findsOneWidget,
    );
    final cover = tester.widget<SizedBox>(
      find.byKey(const Key('following-history-cover-the-signal-demo')),
    );
    expect(cover.width, AppDimens.followingHistoryCoverWidth);
    expect(cover.height, AppDimens.followingHistoryCoverHeight);
    final historyGrid = tester.widget<SliverGrid>(
      find.descendant(
        of: find.byKey(const Key('following-history-grid')),
        matching: find.byType(SliverGrid),
      ),
    );
    final historyDelegate =
        historyGrid.gridDelegate as SliverGridDelegateWithFixedCrossAxisCount;
    expect(historyDelegate.crossAxisCount, 1);
    expect(historyDelegate.mainAxisSpacing, AppDimens.followingHistoryRowGap);
    expect(catalog.detailFetches, 0);

    await tester.tap(find.byKey(const Key('following-edit')));
    await tester.pumpAndSettle();
    expect(
      find.byKey(const Key('following-history-remove-the-signal-demo')),
      findsOneWidget,
    );
    expect(
      find.byKey(const Key('following-history-continue-the-signal-demo')),
      findsNothing,
    );
  });

  testWidgets('should_switch_following_pages_horizontally', (tester) async {
    _signIn();
    await tester.pumpWidget(_app(catalog: FakeCatalogRepository()));
    await tester.pumpAndSettle();
    await tester.tap(find.byKey(const Key('tab-follow')));
    await tester.pumpAndSettle();

    await tester.drag(
      find.byKey(const Key('following-tab-pages')),
      const Offset(-500, 0),
    );
    await tester.pumpAndSettle();

    expect(find.byKey(const Key('following-history-empty')), findsOneWidget);
    final historyTab = tester.widget<AnimatedDefaultTextStyle>(
      find.descendant(
        of: find.byKey(const Key('following-tab-history')),
        matching: find.byType(AnimatedDefaultTextStyle),
      ),
    );
    expect(historyTab.style.fontWeight, FontWeight.w600);
    expect(historyTab.style.color, AppColors.textPrimary);
  });

  testWidgets('should_open_home_from_add_card', (tester) async {
    _signIn();
    await tester.pumpWidget(_app(catalog: FakeCatalogRepository()));
    await tester.pumpAndSettle();
    await tester.tap(find.byKey(const Key('tab-follow')));
    await tester.pumpAndSettle();

    await tester.tap(find.byKey(const Key('following-add-card')));
    await tester.pumpAndSettle();

    expect(find.byKey(const Key('home-grid')), findsOneWidget);
  });

  testWidgets('should_reset_edit_state_when_switching_tabs', (tester) async {
    _signIn();
    final catalog = FakeCatalogRepository();
    await tester.pumpWidget(
      _app(
        catalog: catalog,
        favorites: InMemoryFavoriteRepository(
          cards: catalog.dramas,
          saved: catalog.dramas.map((drama) => drama.id).toSet(),
        ),
      ),
    );
    await tester.pumpAndSettle();
    await tester.tap(find.byKey(const Key('tab-follow')));
    await tester.pumpAndSettle();
    await tester.tap(find.byKey(const Key('following-edit')));
    await tester.pumpAndSettle();

    await tester.tap(find.byKey(const Key('following-tab-history')));
    await tester.pumpAndSettle();
    await tester.tap(find.byKey(const Key('following-tab-favorites')));
    await tester.pumpAndSettle();

    expect(
      find.byKey(const Key('following-card-the-signal-demo')),
      findsOneWidget,
    );
    expect(find.byIcon(Icons.edit_outlined), findsOneWidget);
  });

  testWidgets('should_fit_following_cards_on_compact_viewport', (tester) async {
    tester.view.physicalSize = const Size(320, 640);
    tester.view.devicePixelRatio = 1;
    addTearDown(tester.view.resetPhysicalSize);
    addTearDown(tester.view.resetDevicePixelRatio);
    _signIn();
    final catalog = FakeCatalogRepository();
    await tester.pumpWidget(
      _app(
        catalog: catalog,
        favorites: InMemoryFavoriteRepository(
          cards: catalog.dramas.take(1).toList(),
          saved: {catalog.dramas.first.id},
        ),
      ),
    );
    await tester.pumpAndSettle();
    await tester.tap(find.byKey(const Key('tab-follow')));
    await tester.pumpAndSettle();

    expect(
      find.byKey(const Key('following-card-the-signal-demo')),
      findsOneWidget,
    );
    expect(tester.takeException(), isNull);
  });
}

void _signIn() {
  SharedPreferencesAsyncPlatform.instance =
      InMemorySharedPreferencesAsync.withData({
        'auth.accessToken': 'access',
        'auth.refreshToken': 'refresh',
        'auth.user': '{"uid":"9","nickname":"Viewer","avatarUrl":""}',
      });
}

Widget _app({
  required FakeCatalogRepository catalog,
  FavoriteRepository? favorites,
  WatchHistoryRepository? history,
}) {
  return LumaDramaApp(
    playerFactory: createWidgetPlayer,
    catalogRepository: catalog,
    categoryRepository: FakeCategoryRepository(catalog: catalog),
    watchHistoryRepository: history ?? InMemoryWatchHistoryRepository(),
    favoriteRepository: favorites ?? InMemoryFavoriteRepository(),
    playbackRepository: FakePlaybackRepository(),
    commentRepository: FakeCommentRepository(),
    interactionRepository: FakeInteractionRepository(),
  );
}

class _CountingCatalogRepository extends FakeCatalogRepository {
  int detailFetches = 0;

  @override
  Future<Drama> fetchDrama(String dramaId) {
    detailFetches += 1;
    return super.fetchDrama(dramaId);
  }
}