import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:motorcycle_dash/features/garage/garage_screen.dart';
import 'package:motorcycle_dash/features/garage/garage_providers.dart';
import 'package:motorcycle_dash/services/sync/sync_providers.dart';
import 'package:motorcycle_dash/services/auth/auth_providers.dart';
import 'package:motorcycle_dash/services/auth/auth_state.dart';

void main() {
  testWidgets('GarageScreen displays sync spinner when isSyncProcessingProvider is true', (tester) async {
    await tester.pumpWidget(
      ProviderScope(
        overrides: [
          garageMotorcyclesStreamProvider.overrideWith((ref) => Stream.value([])),
          isSyncProcessingProvider.overrideWithValue(true),
          pendingSyncCountProvider.overrideWithValue(0),
        ],
        child: const MaterialApp(
          home: GarageScreen(),
        ),
      ),
    );

    await tester.pump();

    // Verify spinner is displayed instead of standard button
    expect(find.byKey(const ValueKey('garage_sync_spinner')), findsOneWidget);
    expect(find.byKey(const ValueKey('garage_sync_button')), findsNothing);
  });

  testWidgets('GarageScreen displays pending badge count when sync is idle', (tester) async {
    await tester.pumpWidget(
      ProviderScope(
        overrides: [
          garageMotorcyclesStreamProvider.overrideWith((ref) => Stream.value([])),
          isSyncProcessingProvider.overrideWithValue(false),
          pendingSyncCountProvider.overrideWithValue(4),
        ],
        child: const MaterialApp(
          home: GarageScreen(),
        ),
      ),
    );

    await tester.pump();

    expect(find.byKey(const ValueKey('garage_sync_button')), findsOneWidget);
    expect(find.byType(Badge), findsOneWidget);
    expect(find.text('4'), findsOneWidget);
  });

  testWidgets('GarageScreen sync button informs user when signed out', (tester) async {
    await tester.pumpWidget(
      ProviderScope(
        overrides: [
          garageMotorcyclesStreamProvider.overrideWith((ref) => Stream.value([])),
          isSyncProcessingProvider.overrideWithValue(false),
          pendingSyncCountProvider.overrideWithValue(1),
          authNotifierProvider.overrideWith((ref) => MockAuthNotifier(const AuthState.unauthenticated())),
        ],
        child: const MaterialApp(
          home: GarageScreen(),
        ),
      ),
    );

    await tester.pump();

    await tester.tap(find.byKey(const ValueKey('garage_sync_button')));
    await tester.pump();

    expect(find.byKey(const ValueKey('garage_sync_auth_required_snackbar')), findsOneWidget);
    expect(find.text('Sign in to sync your garage with MotorCloud.'), findsOneWidget);
  });
}

class MockAuthNotifier extends StateNotifier<AuthState> implements AuthNotifier {
  MockAuthNotifier(super.state);

  @override
  dynamic noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
}