import 'package:flutter_test/flutter_test.dart';
import 'package:go_router/go_router.dart';
import 'package:shared_preferences/shared_preferences.dart';

import 'package:mileograph_flutter/components/pages/dashboard.dart';

import '../helpers/fake_services.dart';
import '../helpers/test_app.dart';
import '../helpers/test_data.dart';

void main() {
  TestWidgetsFlutterBinding.ensureInitialized();

  setUpAll(() {
    SharedPreferences.setMockInitialValues({});
  });

  testWidgets('Dashboard renders stats and panels', (tester) async {
    final data = FakeDataService()
      ..homepageStatsValue = TestData.homepageStats
      ..tripsValue = TestData.tripSummaries
      ..onThisDayValue = TestData.onThisDayLegs()
      ..classClearanceProgressValue = TestData.classClearance
      ..latestLocoChangesValue = TestData.latestLocoChanges
      ..tractionValue = TestData.traction
      ..currentYearMileageValue = 1200.5;
    final auth = FakeAuthService(api: FakeApiService());
    final router = GoRouter(
      routes: [
        GoRoute(
          path: '/',
          builder: (context, state) => const Dashboard(),
        ),
      ],
    );

    await tester.pumpWidget(
      buildTestRouterApp(
        router: router,
        dataService: data,
        authService: auth,
      ),
    );
    await tester.pumpAndSettle();

    expect(find.text('Dashboard'), findsOneWidget);
    expect(find.textContaining('Welcome back, Alex Rider'), findsOneWidget);
    expect(find.text('Top traction'), findsOneWidget);
    expect(find.text('67 001'), findsOneWidget);
    expect(find.text('On this day'), findsOneWidget);
    expect(find.text('York → Durham'), findsOneWidget);
    expect(find.text('Latest Loco Changes'), findsOneWidget);
    expect(find.text('Status'), findsWidgets);
    expect(find.text('Active'), findsWidgets);
  });

  testWidgets('Dashboard shows loading overlay without stats', (tester) async {
    final data = FakeDataService()
      ..homepageStatsValue = null
      ..isHomepageLoadingValue = true;
    final auth = FakeAuthService(api: FakeApiService());
    final router = GoRouter(
      routes: [
        GoRoute(
          path: '/',
          builder: (context, state) => const Dashboard(),
        ),
      ],
    );

    await tester.pumpWidget(
      buildTestRouterApp(
        router: router,
        dataService: data,
        authService: auth,
      ),
    );
    await tester.pump();

    expect(find.text('Loading dashboard data...'), findsOneWidget);
    expect(find.byType(CircularProgressIndicator), findsWidgets);
  });
}