import 'package:flutter/material.dart' show Icons;
import 'package:flutter/widgets.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:gopeed/features/settings/presentation/widgets/app_update_dialog.dart';
import 'package:gopeed/features/settings/presentation/widgets/app_update_notes_viewport.dart';
import 'package:gopeed/shared/theme/app_theme.dart';
import 'package:gopeed/util/package_info.dart' as app_package;
import 'package:gopeed/util/updater.dart';
import 'package:gopeed/core/network/candidate_download.dart';
import 'package:package_info_plus/package_info_plus.dart';
import 'package:shadcn_flutter/shadcn_flutter.dart' as shad;

void main() {
  TestWidgetsFlutterBinding.ensureInitialized().platformDispatcher.localeTestValue = const Locale('en');

  setUpAll(() {
    app_package.packageInfo = PackageInfo(
      appName: 'Gopeed',
      packageName: 'com.gopeed.Gopeed',
      version: '1.7.0',
      buildNumber: '1',
    );
  });

  test('package names use the client channel and architecture', () {
    expect(appUpdateAssetName('2.0.0', UpdateChannel.windowsInstaller, 'ia32'), 'Gopeed-v2.0.0-windows-386.zip');
    expect(
      appUpdateAssetName('2.0.0-beta.3', UpdateChannel.windowsPortable, 'x64'),
      'Gopeed-v2.0.0-beta.3-windows-amd64-portable.zip',
    );
    expect(appUpdateAssetName('2.0.0', UpdateChannel.macosDmg, 'arm64'), 'Gopeed-v2.0.0-macos-arm64.dmg');
    expect(appUpdateAssetName('2.0.0', UpdateChannel.linuxDeb, 'x64'), 'Gopeed-v2.0.0-linux-amd64.deb');
    expect(appUpdateAssetName('2.0.0', UpdateChannel.androidApk, 'arm'), 'Gopeed-v2.0.0-android-armeabi-v7a.apk');
    expect(appUpdateAssetName('2.0.0', UpdateChannel.androidApk, 'arm64'), 'Gopeed-v2.0.0-android-arm64-v8a.apk');
    expect(appUpdateAssetName('2.0.0', UpdateChannel.androidApk, 'x64'), 'Gopeed-v2.0.0-android-x86_64.apk');
    expect(appUpdateAssetName('2.0.0', UpdateChannel.androidApk, 'riscv64'), 'Gopeed-v2.0.0-android.apk');
    for (final channel in [
      null,
      UpdateChannel.linuxFlathub,
      UpdateChannel.linuxSnap,
      UpdateChannel.linuxAppImage,
      UpdateChannel.linuxRpm,
      UpdateChannel.iosIpa,
      UpdateChannel.docker,
    ]) {
      expect(appUpdateAssetName('2.0.0', channel, 'arm64'), isEmpty);
    }
  });

  test('selects the matching bilingual release notes', () {
    const notes = '# Release notes\n\n- English change\n\n# 更新日志\n\n- 中文更新';
    expect(localizedReleaseNotes(notes, 'en'), '# Release notes\n\n- English change');
    expect(localizedReleaseNotes(notes, 'zh-CN'), '# 更新日志\n\n- 中文更新');
  });

  testWidgets('update dialog shows beta versions without tag prefixes', (tester) async {
    tester.view.physicalSize = const Size(390, 760);
    tester.view.devicePixelRatio = 1;
    addTearDown(() {
      tester.view.resetPhysicalSize();
      tester.view.resetDevicePixelRatio();
    });

    app_package.packageInfo = PackageInfo(
      appName: 'Gopeed',
      packageName: 'com.gopeed.Gopeed',
      version: '2.0.0.1',
      buildNumber: '1',
    );
    addTearDown(() {
      app_package.packageInfo = PackageInfo(
        appName: 'Gopeed',
        packageName: 'com.gopeed.Gopeed',
        version: '1.7.0',
        buildNumber: '1',
      );
    });

    const version = VersionInfo(
      version: '2.0.0-beta.2',
      changeLog: '# Release notes\n\n- Faster downloads\n\n# 更新日志\n\n- 下载更快',
      releaseUrl: 'https://example.com/release',
    );
    await tester.pumpWidget(
      shad.ShadcnApp(
        theme: AppTheme.light(),
        materialTheme: AppTheme.materialLight(),
        home: Builder(
          builder: (context) => shad.SecondaryButton(
            onPressed: () => showAppUpdateDialog(context, versionInfo: version, onUpdate: (_, _) async {}),
            child: const Text('Open update'),
          ),
        ),
      ),
    );
    await tester.tap(find.text('Open update'));
    await tester.pumpAndSettle();

    expect(find.byKey(const ValueKey('app-update-dialog')), findsOneWidget);
    expect(find.text('A new version is available'), findsOneWidget);
    expect(find.text('2.0.0-beta.1  →  2.0.0-beta.2'), findsOneWidget);
    expect(find.textContaining('v2.0.0'), findsNothing);
    expect(find.text('Faster downloads'), findsOneWidget);
    expect(find.text('下载更快'), findsNothing);
    expect(find.text('Later'), findsOneWidget);
    expect(find.text('Update'), findsOneWidget);
    expect(find.text("What's New"), findsNothing);
    final versionText = tester.widget<Text>(find.text('2.0.0-beta.1  →  2.0.0-beta.2'));
    expect(versionText.style?.decoration, TextDecoration.none);
    expect(versionText.style?.inherit, isFalse);
    expect(find.byIcon(Icons.system_update_alt_outlined), findsNothing);
    final dialog = tester.getRect(find.byKey(const ValueKey('app-update-dialog')));
    expect(dialog.width, lessThan(320));
    expect(tester.getCenter(find.byKey(const ValueKey('app-update-heading'))).dx, closeTo(dialog.center.dx, 0.01));
    expect(tester.getCenter(find.byKey(const ValueKey('app-update-actions'))).dx, closeTo(dialog.center.dx, 0.01));
    expect(tester.takeException(), isNull);
  });

  for (final width in [390.0, 1024.0]) {
    testWidgets('checksum failures prevent success and show a localized error at $width', (tester) async {
      tester.view.physicalSize = Size(width, 760);
      tester.view.devicePixelRatio = 1;
      addTearDown(() {
        tester.view.resetPhysicalSize();
        tester.view.resetDevicePixelRatio();
      });
      var attempts = 0;
      await tester.pumpWidget(
        shad.ShadcnApp(
          theme: AppTheme.light(),
          materialTheme: AppTheme.materialLight(),
          home: Builder(
            builder: (context) => shad.SecondaryButton(
              onPressed: () => showAppUpdateDialog(
                context,
                versionInfo: const VersionInfo(
                  version: '2.0.0',
                  changeLog: '',
                  releaseUrl: 'https://github.com/GopeedLab/gopeed/releases/tag/v2.0.0',
                ),
                onUpdate: (_, progress) async {
                  attempts++;
                  progress(100, 100);
                  throw const DownloadChecksumException();
                },
              ),
              child: const Text('Open update'),
            ),
          ),
        ),
      );
      await tester.tap(find.text('Open update'));
      await tester.pumpAndSettle();
      await tester.tap(find.text('Update'));
      await tester.pumpAndSettle();
      expect(attempts, 1);
      expect(find.text('Update verification failed. Installation stopped.'), findsOneWidget);
      expect(find.text('Update failed. Please try again later'), findsNothing);
      expect(tester.takeException(), isNull);
    });
  }

  testWidgets('release notes keep the last line above the fade when scrolled to the end', (tester) async {
    await tester.pumpWidget(
      shad.ShadcnApp(
        theme: AppTheme.dark(),
        materialTheme: AppTheme.materialDark(),
        home: Center(
          child: SizedBox(
            width: 280,
            child: AppUpdateNotesViewport(
              child: Column(children: [for (var i = 0; i < 30; i++) Text('Release note $i')]),
            ),
          ),
        ),
      ),
    );
    await tester.pumpAndSettle();
    final scrollbar = tester.widget<shad.Scrollbar>(find.byType(shad.Scrollbar));
    expect(scrollbar.thumbVisibility, isTrue);
    final controller = scrollbar.controller!;
    expect(controller.position.maxScrollExtent, greaterThan(0));
    controller.jumpTo(controller.position.maxScrollExtent);
    await tester.pumpAndSettle();
    final viewport = tester.getRect(find.byType(AppUpdateNotesViewport));
    final lastLine = tester.getRect(find.text('Release note 29'));
    expect(lastLine.bottom, lessThanOrEqualTo(viewport.bottom - 24));
    expect(lastLine.top, greaterThan(viewport.top));
    expect(tester.takeException(), isNull);
    await tester.pumpWidget(const SizedBox.shrink());
    await tester.pumpAndSettle();
    expect(tester.takeException(), isNull);
  });
}