// Author: fruit.com.cn

import 'dart:async';

import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:provider/provider.dart';

import 'package:fruitshorts/core/data/models/drama.dart';
import 'package:fruitshorts/core/data/remote/api_client.dart';
import 'package:fruitshorts/core/data/repositories/catalog_repository.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/data/services/catalog_controller.dart';
import 'package:fruitshorts/core/data/services/favorite_controller.dart';
import 'package:fruitshorts/l10n/app_localizations.dart';
import 'package:fruitshorts/pages/drama_detail/drama_detail_view.dart';

import '../support/fake_catalog.dart';

void main() {
  testWidgets('should_show_card_content_before_detail_returns', (tester) async {
    final pending = Completer<Drama>();
    final card = _cardDrama();
    final catalog = _ScriptedCatalog(
      dramas: [card],
      loadDetail: () => pending.future,
    );

    await _pumpDetail(tester, card: card, catalog: catalog, settle: false);

    expect(find.byKey(const Key('detail-title')), findsOneWidget);
    expect(find.byKey(const Key('detail-poster')), findsOneWidget);
    expect(find.byKey(const Key('detail-stats')), findsOneWidget);
    expect(find.byKey(const Key('detail-episodes-loading')), findsOneWidget);
    expect(find.byType(CircularProgressIndicator), findsNothing);
    expect(
      tester
          .widget<FilledButton>(find.byKey(const Key('detail-cta')))
          .onPressed,
      isNull,
    );

    pending.complete(_detailDrama(card));
    await tester.pump();
    await tester.pumpAndSettle();

    expect(find.byKey(const Key('detail-episodes-loading')), findsNothing);
    expect(find.byKey(const Key('detail-episode-chips')), findsOneWidget);
    expect(
      tester
          .widget<FilledButton>(find.byKey(const Key('detail-cta')))
          .onPressed,
      isNotNull,
    );
  });

  testWidgets('should_keep_card_content_when_detail_load_fails', (
    tester,
  ) async {
    final card = _cardDrama();
    final catalog = _ScriptedCatalog(
      dramas: [card],
      loadDetail: () async => throw const ApiException(500, 'detail failed'),
    );

    await _pumpDetail(tester, card: card, catalog: catalog);

    expect(find.byKey(const Key('detail-title')), findsOneWidget);
    expect(find.byKey(const Key('detail-poster')), findsOneWidget);
    expect(find.byKey(const Key('detail-stats')), findsOneWidget);
    expect(find.byKey(const Key('detail-episodes-retry')), findsOneWidget);
    expect(find.byType(CircularProgressIndicator), findsNothing);
    expect(
      tester
          .widget<FilledButton>(find.byKey(const Key('detail-cta')))
          .onPressed,
      isNull,
    );
  });
}

Future<void> _pumpDetail(
  WidgetTester tester, {
  required Drama card,
  required CatalogRepository catalog,
  bool settle = true,
}) async {
  tester.view.physicalSize = const Size(390, 844);
  tester.view.devicePixelRatio = 1;
  addTearDown(tester.view.resetPhysicalSize);
  addTearDown(tester.view.resetDevicePixelRatio);
  final favorites = FavoriteController(
    InMemoryFavoriteRepository(cards: [card]),
  );
  await favorites.load();
  await tester.pumpWidget(
    MultiProvider(
      providers: [
        Provider<WatchHistoryRepository>.value(
          value: InMemoryWatchHistoryRepository(),
        ),
        Provider<PlaybackRepository>.value(value: FakePlaybackRepository()),
        ChangeNotifierProvider<FavoriteController>.value(value: favorites),
        ChangeNotifierProvider(
          create: (_) => CatalogController(catalog)..load(),
        ),
      ],
      child: MaterialApp(
        locale: const Locale('en'),
        supportedLocales: AppLocalizations.supportedLocales,
        localizationsDelegates: AppLocalizations.localizationsDelegates,
        home: DramaDetailPage(drama: card),
      ),
    ),
  );
  if (settle) {
    await tester.pumpAndSettle();
  } else {
    await tester.pump();
  }
}

Drama _cardDrama() => const Drama(
  id: 'detail-k53',
  title: 'Detail K53',
  synopsis: 'A card synopsis is available before the detail request finishes.',
  posterUrl: '/files/detail-k53.png',
  category: 'Romance',
  genre: 'Urban',
  language: 'id',
  totalEpisodes: 8,
  viewCount: 120000,
  favoriteCount: 3200,
  likeCount: 5600,
);

Drama _detailDrama(Drama card) => Drama(
  id: card.id,
  title: card.title,
  synopsis: card.synopsis,
  posterUrl: card.posterUrl,
  category: card.category,
  genre: card.genre,
  language: card.language,
  totalEpisodes: card.totalEpisodes,
  viewCount: card.viewCount,
  favoriteCount: card.favoriteCount,
  likeCount: card.likeCount,
  detailLoaded: true,
  episodes: [
    for (var number = 1; number <= card.totalEpisodes; number++)
      Episode(
        id: '${card.id}-$number',
        number: number,
        title: 'Episode $number',
        isFree: number == 1,
        videoUrl: number == 1 ? '/files/${card.id}-1.mp4' : '',
        locked: number > 1,
        likeCount: card.likeCount,
        commentCount: card.commentCount,
      ),
  ],
);

class _ScriptedCatalog extends FakeCatalogRepository {
  _ScriptedCatalog({required List<Drama> dramas, required this.loadDetail})
    : super(dramas: dramas);

  final Future<Drama> Function() loadDetail;

  @override
  Future<Drama> fetchDrama(String dramaId) => loadDetail();
}