import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:mockito/mockito.dart';
import 'package:package_info_plus/package_info_plus.dart';
import 'package:plugin_platform_interface/plugin_platform_interface.dart';
import 'package:sharedinbox/core/models/account.dart';
import 'package:sharedinbox/di.dart';
import 'package:sharedinbox/ui/screens/about_screen.dart';
import 'package:url_launcher_platform_interface/url_launcher_platform_interface.dart';

import 'helpers.dart';

class MockUrlLauncher extends Mock
    with MockPlatformInterfaceMixin
    implements UrlLauncherPlatform {
  String? launchedUrl;

  @override
  Future<bool> canLaunch(String? url) async => true;

  @override
  Future<bool> launchUrl(String? url, LaunchOptions? options) async {
    launchedUrl = url;
    return true;
  }
}

class ThrowingUrlLauncher extends Mock
    with MockPlatformInterfaceMixin
    implements UrlLauncherPlatform {
  @override
  Future<bool> canLaunch(String? url) async => true;

  @override
  Future<bool> launchUrl(String? url, LaunchOptions? options) async {
    throw PlatformException(
      code: 'channel-error',
      message: 'Unable to establish connection on channel: '
          '"dev.flutter.pigeon.url_launcher_android.UrlLauncherApi.launchUrl".',
    );
  }
}

Widget _buildScreen({List<Account> accounts = const []}) {
  return ProviderScope(
    overrides: [
      accountRepositoryProvider.overrideWithValue(
        FakeAccountRepository(accounts),
      ),
    ],
    child: MaterialApp(
      theme: ThemeData(splashFactory: NoSplash.splashFactory),
      home: const AboutScreen(),
    ),
  );
}

void main() {
  setUpAll(() {
    PackageInfo.setMockInitialValues(
      appName: 'SharedInbox',
      packageName: 'org.sharedinbox',
      version: '1.2.3',
      buildNumber: '99',
      buildSignature: '',
    );
  });

  testWidgets('AboutScreen shows title and info table', (tester) async {
    tester.view.physicalSize = const Size(800, 1200);
    tester.view.devicePixelRatio = 2.0;
    addTearDown(tester.view.resetPhysicalSize);
    addTearDown(tester.view.resetDevicePixelRatio);

    await tester.pumpWidget(_buildScreen());
    await tester.pumpAndSettle();

    expect(find.text('About'), findsOneWidget);
    expect(find.textContaining('App Version'), findsWidgets);
    expect(find.textContaining('1.2.3+99'), findsOneWidget);
    expect(find.textContaining('Resolution'), findsWidgets);
    expect(find.textContaining('Dark Mode'), findsWidgets);
    expect(find.textContaining('IMAP Accounts'), findsWidgets);
    expect(find.textContaining('JMAP Accounts'), findsWidgets);
    expect(find.textContaining('Locale'), findsWidgets);
    expect(find.textContaining('Text Scale'), findsWidgets);
    expect(find.textContaining('DB Schema Version'), findsWidgets);
    // Buttons are in the body, not in the AppBar actions
    expect(find.byIcon(Icons.copy), findsOneWidget);
    expect(find.byIcon(Icons.bug_report_outlined), findsOneWidget);
    expect(find.byIcon(Icons.feedback_outlined), findsOneWidget);
    expect(find.text('Copy info'), findsOneWidget);
    expect(find.text('Public issue'), findsOneWidget);
    expect(find.text('Report bug'), findsOneWidget);
  });

  testWidgets('AboutScreen shows correct IMAP and JMAP account counts', (
    tester,
  ) async {
    tester.view.physicalSize = const Size(800, 1200);
    tester.view.devicePixelRatio = 1.0;
    addTearDown(tester.view.resetPhysicalSize);
    addTearDown(tester.view.resetDevicePixelRatio);

    await tester.pumpWidget(
      _buildScreen(
        accounts: [
          const Account(
            id: 'imap-1',
            displayName: 'Alice',
            email: 'alice@example.com',
            imapHost: 'imap.example.com',
            smtpHost: 'smtp.example.com',
          ),
          const Account(
            id: 'imap-2',
            displayName: 'Bob',
            email: 'bob@example.com',
            imapHost: 'imap.example.com',
            smtpHost: 'smtp.example.com',
          ),
          const Account(
            id: 'jmap-1',
            displayName: 'Carol',
            email: 'carol@example.com',
            type: AccountType.jmap,
            jmapUrl: 'https://jmap.example.com',
          ),
        ],
      ),
    );
    await tester.pumpAndSettle();

    expect(find.textContaining('IMAP Accounts'), findsWidgets);
    expect(find.textContaining('JMAP Accounts'), findsWidgets);
  });

  testWidgets('AboutScreen copy button puts markdown in clipboard', (
    tester,
  ) async {
    tester.view.physicalSize = const Size(800, 1200);
    tester.view.devicePixelRatio = 1.0;
    addTearDown(tester.view.resetPhysicalSize);
    addTearDown(tester.view.resetDevicePixelRatio);

    String? clipboardText;
    tester.binding.defaultBinaryMessenger.setMockMethodCallHandler(
      SystemChannels.platform,
      (MethodCall call) async {
        if (call.method == 'Clipboard.setData') {
          clipboardText =
              (call.arguments as Map<dynamic, dynamic>)['text'] as String?;
        }
        return null;
      },
    );
    addTearDown(
      () => tester.binding.defaultBinaryMessenger.setMockMethodCallHandler(
        SystemChannels.platform,
        null,
      ),
    );

    await tester.pumpWidget(_buildScreen());
    await tester.pumpAndSettle();

    await tester.tap(find.byIcon(Icons.copy));
    await tester.pump();
    await tester.pump();
    await tester.pumpAndSettle();

    expect(clipboardText, isNotNull);
    expect(clipboardText, contains('1.2.3+99'));
    expect(clipboardText, contains('App Version'));
    expect(clipboardText, contains('Resolution'));
    expect(clipboardText, contains('Dark Mode'));
    expect(clipboardText, contains('IMAP Accounts'));
    expect(clipboardText, contains('JMAP Accounts'));
    expect(clipboardText, contains('Locale'));
    expect(clipboardText, contains('Text Scale'));
    expect(clipboardText, contains('DB Schema Version'));
    expect(clipboardText, contains('[sharedinbox.de](https://sharedinbox.de)'));
  });

  testWidgets('AboutScreen create-issue button opens Codeberg URL', (
    tester,
  ) async {
    tester.view.physicalSize = const Size(800, 1200);
    tester.view.devicePixelRatio = 1.0;
    addTearDown(tester.view.resetPhysicalSize);
    addTearDown(tester.view.resetDevicePixelRatio);

    final mock = MockUrlLauncher();
    UrlLauncherPlatform.instance = mock;

    await tester.pumpWidget(_buildScreen());
    await tester.pumpAndSettle();

    await tester.tap(find.byIcon(Icons.bug_report_outlined));
    await tester.pumpAndSettle();

    expect(
      mock.launchedUrl,
      contains('https://codeberg.org/guettli/sharedinbox/issues/new'),
    );
    expect(mock.launchedUrl, contains('1.2.3%2B99'));
  });

  testWidgets(
    'AboutScreen link tap with failed url_launcher shows error snackbar',
    (tester) async {
      tester.view.physicalSize = const Size(800, 1200);
      tester.view.devicePixelRatio = 1.0;
      addTearDown(tester.view.resetPhysicalSize);
      addTearDown(tester.view.resetDevicePixelRatio);

      UrlLauncherPlatform.instance = ThrowingUrlLauncher();

      await tester.pumpWidget(_buildScreen());
      await tester.pumpAndSettle();

      await tester.tap(find.textContaining('sharedinbox.de').first);
      await tester.pumpAndSettle();

      expect(find.textContaining('Error:'), findsOneWidget);
    },
  );
}