import 'dart:io';
import 'package:flutter_test/flutter_test.dart';
import 'package:motorcycle_dash/services/motorcycle_image_service.dart';

void main() {
  TestWidgetsFlutterBinding.ensureInitialized();

  group('Motorcycle Image Selection & Hierarchy Audit', () {
    late MotorcycleImageService service;

    setUp(() {
      MotorcycleImageService.resetRegistry();
      service = MotorcycleImageService.instance;
    });

    tearDown(() {
      MotorcycleImageService.resetRegistry();
    });

    test('1. 2001 Yamaha YZF-R6 returns verified authentic photograph', () {
      final ref = service.getReferenceImage(
        make: 'Yamaha',
        model: 'YZF-R6',
        year: 2001,
      );
      expect(ref.isPhoto, isTrue);
      expect(ref.hasImage, isTrue);
      expect(
        ref.assetPath,
        equals('assets/images/motorcycles/yamaha_yzf_r6_2001.jpg'),
      );
      expect(ref.caption, contains('2001 Yamaha YZF-R6'));
      expect(ref.attribution, contains('James McCauley'));
      expect(ref.attribution, contains('CC BY 2.0'));
      expect(
        service.hasPhotographicAsset(
          make: 'Yamaha',
          model: 'YZF-R6',
          year: 2001,
        ),
        isTrue,
      );
    });

    test('2. 1st Generation Yamaha YZF-R6 aliases resolve correctly', () {
      final r6Alias = service.getReferenceImage(
        make: 'Yamaha',
        model: 'R6',
        year: 2001,
      );
      expect(r6Alias.isPhoto, isTrue);
      expect(
        r6Alias.assetPath,
        equals('assets/images/motorcycles/yamaha_yzf_r6_2001.jpg'),
      );

      final spaceAlias = service.getReferenceImage(
        make: 'Yamaha',
        model: 'YZF R6',
        year: 2001,
      );
      expect(spaceAlias.isPhoto, isTrue);

      final noSpaceAlias = service.getReferenceImage(
        make: 'Yamaha',
        model: 'YZFR6',
        year: 2000,
      );
      expect(noSpaceAlias.isPhoto, isTrue);
    });

    test('3. Model-generation year matching works for 1999-2002 5EB', () {
      final gen1999 = service.getReferenceImage(
        make: 'Yamaha',
        model: 'YZF-R6',
        year: 1999,
      );
      expect(gen1999.isPhoto, isTrue);

      final gen2002 = service.getReferenceImage(
        make: 'Yamaha',
        model: 'YZF-R6',
        year: 2002,
      );
      expect(gen2002.isPhoto, isTrue);

      final gen2008 = service.getReferenceImage(
        make: 'Yamaha',
        model: 'YZF-R6',
        year: 2008,
      );
      expect(gen2008.isPhoto, isFalse);
      expect(gen2008.assetPath, isNull);
      expect(gen2008.caption, equals('2008 Yamaha YZF-R6'));
      expect(gen2008.attribution, equals('Technical Schematic'));
    });

    test(
      '4. Motorcycle with no bundled photograph returns graceful technical schematic',
      () {
        final ref = service.getReferenceImage(
          make: 'Honda',
          model: 'CBR600RR',
          year: 2018,
        );
        expect(ref.isPhoto, isFalse);
        expect(ref.hasImage, isFalse);
        expect(ref.assetPath, isNull);
        expect(ref.caption, equals('2018 Honda CBR600RR'));
        expect(ref.attribution, equals('Technical Schematic'));
        expect(
          service.hasPhotographicAsset(
            make: 'Honda',
            model: 'CBR600RR',
            year: 2018,
          ),
          isFalse,
        );
      },
    );

    test('5. Unknown make and model returns generic technical fallback', () {
      final nullRef = service.getReferenceImage(
        make: null,
        model: null,
        year: null,
      );
      expect(nullRef.isPhoto, isFalse);
      expect(nullRef.assetPath, isNull);
      expect(nullRef.caption, equals('Motorcycle Technical Reference'));

      final emptyRef = service.getReferenceImage(
        make: '',
        model: '',
        year: 2020,
      );
      expect(emptyRef.isPhoto, isFalse);
      expect(emptyRef.assetPath, isNull);

      final customRef = service.getReferenceImage(
        make: 'Custom',
        model: 'Cafe Racer',
        year: 1982,
      );
      expect(customRef.isPhoto, isFalse);
      expect(customRef.assetPath, isNull);
      expect(customRef.caption, equals('1982 Custom Cafe Racer'));
      expect(customRef.attribution, equals('Technical Schematic'));
    });

    test(
      '6. Yamaha R6 photograph is NEVER returned for an unrelated motorcycle',
      () {
        final testCases = [
          {'make': 'Honda', 'model': 'CBR600RR', 'year': 2001},
          {'make': 'Honda', 'model': 'CBR1000RR-R', 'year': 2024},
          {'make': 'Suzuki', 'model': 'GSX-R600', 'year': 2001},
          {'make': 'Suzuki', 'model': 'Hayabusa GSX1300R', 'year': 2022},
          {'make': 'Kawasaki', 'model': 'Ninja ZX-6R', 'year': 2001},
          {'make': 'Kawasaki', 'model': 'Ninja H2', 'year': 2023},
          {'make': 'Ducati', 'model': 'Panigale V4 S', 'year': 2023},
          {'make': 'Ducati', 'model': 'Monster 821', 'year': 2019},
          {'make': 'BMW', 'model': 'S1000RR', 'year': 2022},
          {'make': 'BMW', 'model': 'R1250GS Adventure', 'year': 2021},
          {'make': 'KTM', 'model': '390 Duke', 'year': 2020},
          {'make': 'KTM', 'model': '1290 Super Duke R', 'year': 2022},
          {'make': 'Triumph', 'model': 'Daytona 675', 'year': 2012},
          {'make': 'Triumph', 'model': 'Street Triple 765 RS', 'year': 2023},
          {'make': 'Harley-Davidson', 'model': 'Sportster S', 'year': 2022},
          {'make': 'Aprilia', 'model': 'RSV4 1100 Factory', 'year': 2023},
        ];

        for (final tc in testCases) {
          final make = tc['make'] as String;
          final model = tc['model'] as String;
          final year = tc['year'] as int;
          final ref = service.getReferenceImage(
            make: make,
            model: model,
            year: year,
          );

          expect(
            ref.assetPath,
            isNot(equals('assets/images/motorcycles/yamaha_yzf_r6_2001.jpg')),
            reason: 'Failed isolation: $make $model returned R6 asset!',
          );
          expect(
            ref.isPhoto,
            isFalse,
            reason: 'Expected schematic fallback for unbundled $make $model',
          );
          expect(ref.caption, equals('$year $make $model'));
          expect(ref.attribution, equals('Technical Schematic'));
        }
      },
    );

    test(
      '7. Architecture is genuinely extensible via dynamic descriptor registration',
      () {
        final beforeReg = service.getReferenceImage(
          make: 'Ducati',
          model: 'Panigale V4',
          year: 2024,
        );
        expect(beforeReg.isPhoto, isFalse);

        MotorcycleImageService.registerDescriptor(
          const MotorcycleImageDescriptor(
            make: 'Ducati',
            model: 'Panigale V4',
            minYear: 2022,
            maxYear: 2025,
            modelAliases: ['PanigaleV4', 'Panigale V4 S'],
            assetPath: 'assets/images/motorcycles/ducati_panigale_v4.png',
            caption: 'Ducati Panigale V4 (Desmosedici Stradale)',
            attribution: 'Factory Superbike Reference',
            isPhoto: true,
          ),
        );

        final afterReg = service.getReferenceImage(
          make: 'Ducati',
          model: 'Panigale V4',
          year: 2024,
        );
        expect(afterReg.isPhoto, isTrue);
        expect(
          afterReg.assetPath,
          equals('assets/images/motorcycles/ducati_panigale_v4.png'),
        );
        expect(afterReg.caption, contains('Ducati Panigale V4'));

        final aliasReg = service.getReferenceImage(
          make: 'Ducati',
          model: 'Panigale V4 S',
          year: 2023,
        );
        expect(aliasReg.isPhoto, isTrue);
      },
    );

    test('8. Bundled photographic assets physically exist on disk', () {
      final bundledAssets = MotorcycleImageService.bundledPhotographicAssets;
      expect(bundledAssets, isNotEmpty);

      for (final assetPath in bundledAssets) {
        final file = File(assetPath);
        expect(
          file.existsSync(),
          isTrue,
          reason: 'Bundled asset $assetPath does not exist on disk!',
        );
        expect(
          file.lengthSync(),
          greaterThan(100000),
          reason:
              'Bundled photographic asset $assetPath is an undersized render or corrupt',
        );
      }
    });

    test('9. getCachedOrCuratedImage synchronously provides curated photo', () {
      final img = service.getCachedOrCuratedImage(
        make: 'Yamaha',
        model: 'YZF-R6',
        year: 2001,
      );
      expect(img, isNotNull);
      expect(img!.isPhoto, isTrue);
      expect(
        img.assetPath,
        equals('assets/images/motorcycles/yamaha_yzf_r6_2001.jpg'),
      );
    });

    test(
      '10. resolve returns curated photo directly without network',
      () async {
        final img = await service.resolve(
          make: 'Yamaha',
          model: 'YZF-R6',
          year: 2001,
        );
        expect(img, isNotNull);
        expect(img!.isPhoto, isTrue);
        expect(
          img.assetPath,
          equals('assets/images/motorcycles/yamaha_yzf_r6_2001.jpg'),
        );
      },
    );
  });
}