// Author: fruit.com.cn

import 'dart:async';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:fruitshorts/core/data/models/drama.dart';
import 'package:fruitshorts/core/data/models/home_feed.dart';
import 'package:fruitshorts/core/data/repositories/catalog_repository.dart';
import 'package:fruitshorts/core/data/services/catalog_controller.dart';
import 'package:fruitshorts/core/theme/app_colors.dart';
import 'package:fruitshorts/l10n/app_localizations.dart';
import 'package:fruitshorts/pages/home/home_view.dart';
import 'package:fruitshorts/pages/splash/splash_page.dart';
import 'package:provider/provider.dart';

void main() {
  testWidgets('should_keep_splash_with_loading_until_home_feed_settles', (
    tester,
  ) async {
    final repository = _PendingCatalog();
    await tester.pumpWidget(
      MaterialApp(
        localizationsDelegates: AppLocalizations.localizationsDelegates,
        supportedLocales: AppLocalizations.supportedLocales,
        home: ChangeNotifierProvider(
          create: (_) => CatalogController(repository)..load(),
          child: const HomePage(),
        ),
      ),
    );

    expect(find.byKey(const Key('splash-screen')), findsOneWidget);
    expect(find.byKey(const Key('splash-loading')), findsOneWidget);
    expect(find.byKey(const Key('home-empty')), findsNothing);
    final clip = tester.widget<ClipRRect>(find.byType(ClipRRect));
    expect(clip.borderRadius, BorderRadius.circular(24));

    repository.pending.complete(const HomeFeed());
    await tester.pump();
    await tester.pump();

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

  testWidgets('should_animate_brand_copy_and_loading_to_full_opacity', (
    tester,
  ) async {
    await tester.pumpWidget(const MaterialApp(home: SplashPage()));

    expect(find.byKey(const Key('splash-screen')), findsOneWidget);
    expect(find.byKey(const Key('splash-brand')), findsOneWidget);
    expect(find.byKey(const Key('splash-tagline')), findsOneWidget);
    expect(find.byKey(const Key('splash-loading')), findsOneWidget);
    final mark = tester.widget<Image>(
      find.byKey(const Key('splash-logo-mark')),
    );
    expect((mark.image as AssetImage).assetName, 'assets/icon/splash_mark.png');
    expect(mark.width, 112);
    expect(mark.height, 112);
    final glow = tester.widget<Container>(
      find.descendant(
        of: find.byKey(const Key('splash-logo-glow')),
        matching: find.byType(Container),
      ),
    );
    final glowGradient = (glow.decoration as BoxDecoration).gradient;
    expect(
      (glowGradient as RadialGradient).colors.first,
      const Color(0x33FF7A1A),
    );
    expect(
      tester.widget<ColoredBox>(find.byKey(const Key('splash-screen'))).color,
      AppColors.ink,
    );
    expect(
      tester.widget<Text>(find.byKey(const Key('splash-brand'))).style?.color,
      AppColors.onSurface,
    );
    expect(
      tester.widget<Text>(find.byKey(const Key('splash-tagline'))).style?.color,
      AppColors.muted,
    );
    final overlay = tester.widget<AnnotatedRegion<SystemUiOverlayStyle>>(
      find.byType(AnnotatedRegion<SystemUiOverlayStyle>).first,
    );
    expect(overlay.value.statusBarIconBrightness, Brightness.dark);

    await tester.pump(const Duration(milliseconds: 1200));

    double opacity(String key) =>
        tester.widget<FadeTransition>(find.byKey(Key(key))).opacity.value;
    expect(opacity('splash-logo-fade'), 1);
    expect(opacity('splash-brand-fade'), 1);
    expect(opacity('splash-tagline-fade'), 1);
    expect(opacity('splash-loading-fade'), 1);
  });
}

class _PendingCatalog implements CatalogRepository {
  final Completer<HomeFeed> pending = Completer<HomeFeed>();

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

  @override
  Future<HomeFeed> fetchDiscoverFeed() => pending.future;

  @override
  Future<Drama> fetchDrama(String dramaId) =>
      Future<Drama>.error(StateError('unused'));
}