import 'package:anyway/data/datasources/trip_local_datasource.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:shared_preferences/shared_preferences.dart';

void main() {
  TestWidgetsFlutterBinding.ensureInitialized();

  late TripLocalDataSource dataSource;

  Map<String, dynamic> buildTripJson(String uuid) {
    return {
      'uuid': uuid,
      'total_time_minute': 90,
      'landmarks': [
        {
          'uuid': 'lm-$uuid',
          'name': 'Landmark $uuid',
          'location': [0.0, 0.0],
          'type': {'type': 'sightseeing'},
        },
      ],
    };
  }

  setUp(() {
    SharedPreferences.setMockInitialValues({});
    dataSource = TripLocalDataSourceImpl();
  });

  test('loadTrips returns empty list when storage is empty', () async {
    final trips = await dataSource.loadTrips();
    expect(trips, isEmpty);
  });

  test('upsertTrip stores and retrieves a trip', () async {
    await dataSource.upsertTrip(buildTripJson('trip-1'));
    final trips = await dataSource.loadTrips();
    expect(trips, hasLength(1));
    expect(trips.first['uuid'], 'trip-1');

    final fetched = await dataSource.getTrip('trip-1');
    expect(fetched, isNotNull);
    expect(fetched!['uuid'], 'trip-1');
  });

  test('deleteTrip removes the persisted entry', () async {
    await dataSource.upsertTrip(buildTripJson('trip-1'));
    await dataSource.upsertTrip(buildTripJson('trip-2'));

    await dataSource.deleteTrip('trip-1');
    final remaining = await dataSource.loadTrips();
    expect(remaining, hasLength(1));
    expect(remaining.single['uuid'], 'trip-2');
  });

  test('upsertTrip overwrites an existing trip and keeps latest first', () async {
    await dataSource.upsertTrip(buildTripJson('trip-1'));
    await dataSource.upsertTrip(buildTripJson('trip-2'));

    final updatedTrip1 = buildTripJson('trip-1')..['total_time_minute'] = 120;
    await dataSource.upsertTrip(updatedTrip1);

    final trips = await dataSource.loadTrips();
    expect(trips, hasLength(2));
    expect(trips.first['uuid'], 'trip-1');
    expect(trips.first['total_time_minute'], 120);
    expect(trips[1]['uuid'], 'trip-2');
  });
}