// 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:shared_preferences_platform_interface/in_memory_shared_preferences_async.dart';
import 'package:shared_preferences_platform_interface/shared_preferences_async_platform_interface.dart';

import 'package:fruitshorts/app.dart';
import 'package:fruitshorts/core/config/app_config.dart';
import 'package:fruitshorts/core/data/models/drama.dart';
import 'package:fruitshorts/core/data/models/feed_page.dart';
import 'package:fruitshorts/core/data/models/home_feed.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/theme/app_theme.dart';
import 'package:fruitshorts/l10n/app_localizations.dart';
import 'package:fruitshorts/pages/home/home_view.dart';

import '../support/fake_catalog.dart';
import '../support/fake_category.dart';
import '../support/fake_haptics.dart';
import '../support/fake_interaction_repositories.dart';
import '../support/fake_notice_repository.dart';
import '../support/widget_player.dart';

void main() {
  setUp(() {
    SharedPreferencesAsyncPlatform.instance =
        InMemorySharedPreferencesAsync.empty();
    AppConfig.clearRuntimeBaseUrl();
    AppConfig.ready = Future<void>.value();
  });

  tearDown(() {
    AppConfig.clearRuntimeBaseUrl();
    AppConfig.ready = Future<void>.value();
  });

  testWidgets('should_show_loading_without_flutter_splash_before_settles', (
    tester,
  ) async {
    final controller = CatalogController(_EmptyCatalogRepository())
      ..loading = true
      ..settled = false;
    addTearDown(controller.dispose);

    await _pumpHomePage(tester, controller);

    expect(find.byType(CircularProgressIndicator), findsOneWidget);
    expect(find.byKey(const Key('startup-splash')), findsNothing);
  });

  testWidgets('should_show_spinner_when_retry_loads_after_catalog_settled', (
    tester,
  ) async {
    final controller = CatalogController(_EmptyCatalogRepository())
      ..loading = true
      ..settled = true;
    addTearDown(controller.dispose);

    await _pumpHomePage(tester, controller);

    expect(find.byType(CircularProgressIndicator), findsOneWidget);
    expect(find.byKey(const Key('startup-splash')), findsNothing);
  });

  testWidgets('should_enter_home_after_loading_when_data_is_ready', (
    tester,
  ) async {
    AppConfig.ready = Future<void>.value();
    final catalog = _PendingCatalogRepository();
    await tester.pumpWidget(
      LumaDramaApp(
        playerFactory: createWidgetPlayer,
        catalogRepository: catalog,
        categoryRepository: FakeCategoryRepository(catalog: catalog),
        watchHistoryRepository: InMemoryWatchHistoryRepository(),
        favoriteRepository: InMemoryFavoriteRepository(cards: catalog.dramas),
        playbackRepository: FakePlaybackRepository(),
        commentRepository: FakeCommentRepository(),
        interactionRepository: FakeInteractionRepository(),
        noticeRepository: FakeNoticeRepository(),
        haptics: FakeHaptics(),
      ),
    );
    await tester.pump();

    expect(find.byKey(const Key('startup-splash')), findsNothing);
    expect(find.byType(CircularProgressIndicator), findsOneWidget);

    catalog.complete(_feed);
    await tester.pumpAndSettle();

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

Future<void> _pumpHomePage(
  WidgetTester tester,
  CatalogController controller,
) async {
  await tester.pumpWidget(
    ChangeNotifierProvider<CatalogController>.value(
      value: controller,
      child: MaterialApp(
        theme: AppTheme.light(),
        locale: const Locale('en'),
        supportedLocales: AppLocalizations.supportedLocales,
        localizationsDelegates: AppLocalizations.localizationsDelegates,
        home: const HomePage(),
      ),
    ),
  );
  await tester.pump();
}

final _feed = HomeFeed(
  sections: [
    FeedSection(code: 'hot', title: 'Hot', dramas: [demoDramas.first]),
  ],
);

class _EmptyCatalogRepository implements CatalogRepository {
  @override
  Future<HomeFeed> fetchHomeFeed() async => const HomeFeed();

  @override
  Future<HomeFeed> fetchDiscoverFeed() async => const HomeFeed();

  @override
  Future<FeedPage> fetchFeed({
    List<String> types = const [],
    String? categoryId,
    String? cursor,
    int size = 10,
  }) async => const FeedPage();

  @override
  Future<Drama> fetchDrama(String dramaId) async => _feed.dramas.first;
}

class _PendingCatalogRepository implements CatalogRepository {
  final Completer<HomeFeed> _home = Completer<HomeFeed>();

  List<Drama> get dramas => _feed.dramas;

  void complete(HomeFeed feed) {
    if (!_home.isCompleted) _home.complete(feed);
  }

  @override
  Future<HomeFeed> fetchHomeFeed() => _home.future;

  @override
  Future<HomeFeed> fetchDiscoverFeed() async => _feed;

  @override
  Future<FeedPage> fetchFeed({
    List<String> types = const [],
    String? categoryId,
    String? cursor,
    int size = 10,
  }) async => FeedPage(dramas: _feed.dramas);

  @override
  Future<Drama> fetchDrama(String dramaId) async => _feed.dramas.first;
}