import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:gametime/application/application.dart';
import 'package:gametime/domain/domain.dart';
import 'package:gametime/presentation/presentation.dart';

void main() {
  testWidgets('la validation au moins une mesure active bloque la sauvegarde', (
    tester,
  ) async {
    final exerciseRepository = _FakeExerciseRepository();
    final exerciseUseCases = _exerciseUseCases(exerciseRepository);

    await tester.pumpWidget(
      MaterialApp(
        home: ExerciseFormScreen(
          exerciseUseCases: exerciseUseCases,
          mediaUseCases: _mediaUseCases(exerciseRepository),
        ),
      ),
    );

    await tester.enterText(find.byType(TextFormField).first, 'Gainage');
    await tester.tap(find.widgetWithText(SwitchListTile, 'Temps'));
    await tester.pump();
    await tester.dragUntilVisible(
      find.text('Enregistrer'),
      find.byType(ListView),
      const Offset(0, -200),
    );
    await tester.pumpAndSettle();
    await tester.tap(find.text('Enregistrer'));
    await tester.pump();

    expect(
      find.text('Active au moins une mesure pour enregistrer.'),
      findsOneWidget,
    );
    expect(exerciseRepository.saved, isEmpty);
  });

  testWidgets('la liste affiche les badges des mesures disponibles', (
    tester,
  ) async {
    final exercise = Exercise(
      metadata: _metadata('exercise-1'),
      name: 'Squat',
      description: 'Jambes · charge libre',
      hasTimeMeasure: true,
      hasRepsMeasure: true,
      hasScoreMeasure: true,
      scoreLabel: 'Charge',
      scoreUnit: 'kg',
    );

    await tester.pumpWidget(
      MaterialApp(
        home: Scaffold(body: ExerciseListTile(exercise: exercise)),
      ),
    );

    expect(find.text('Squat'), findsOneWidget);
    expect(find.text('Jambes · charge libre'), findsOneWidget);
    expect(find.text('Temps'), findsOneWidget);
    expect(find.text('Répétitions'), findsOneWidget);
    expect(find.text('Score (kg)'), findsOneWidget);
  });

  testWidgets(
    'sélectionner une image déclenche l’import et confirme le fichier',
    (tester) async {
      final exerciseRepository = _FakeExerciseRepository();
      final storage = _FakeMediaStorage();

      await tester.pumpWidget(
        MaterialApp(
          home: ExerciseFormScreen(
            exerciseUseCases: _exerciseUseCases(exerciseRepository),
            mediaUseCases: _mediaUseCases(exerciseRepository, storage: storage),
            mediaPicker: const _FakeMediaPicker(
              imagePath: '/tmp/imports/photo.png',
            ),
          ),
        ),
      );

      await tester.tap(find.text('Choisir une image'));
      await tester.pump();

      expect(storage.imports.single.sourcePath, '/tmp/imports/photo.png');
      expect(storage.imports.single.kind, MediaKind.image);
      expect(find.text('photo.png'), findsOneWidget);
      expect(find.text('Image importée.'), findsOneWidget);
    },
  );
}

ExerciseUseCases _exerciseUseCases(_FakeExerciseRepository repository) {
  return ExerciseUseCases(
    repository: repository,
    clock: _FakeClock(DateTime.utc(2026, 7, 17, 12)),
    ids: _FakeIds(),
    originDeviceId: 'device-1',
  );
}

MediaUseCases _mediaUseCases(
  _FakeExerciseRepository exerciseRepository, {
  _FakeMediaStorage? storage,
}) {
  return MediaUseCases(
    mediaRepository: _FakeMediaAssetRepository(),
    exerciseRepository: exerciseRepository,
    storage: storage ?? _FakeMediaStorage(),
    clock: _FakeClock(DateTime.utc(2026, 7, 17, 12)),
    ids: _FakeIds(),
    originDeviceId: 'device-1',
  );
}

final class _FakeMediaPicker implements MediaSourcePicker {
  const _FakeMediaPicker({this.imagePath, this.videoPath});

  final String? imagePath;
  final String? videoPath;

  @override
  Future<String?> pickPath(MediaKind kind) async {
    return switch (kind) {
      MediaKind.image => imagePath,
      MediaKind.video => videoPath,
    };
  }
}

EntityMetadata _metadata(String id) {
  return EntityMetadata(
    id: id,
    createdAt: DateTime.utc(2026, 7, 17),
    updatedAt: DateTime.utc(2026, 7, 17),
    originDeviceId: 'device-1',
  );
}

final class _FakeClock implements Clock {
  const _FakeClock(this.value);

  final DateTime value;

  @override
  DateTime now() => value;
}

final class _FakeIds implements IdGenerator {
  var _next = 0;

  @override
  String newId() {
    _next += 1;
    return 'id-$_next';
  }
}

final class _FakeExerciseRepository implements ExerciseRepository {
  final exercises = <Exercise>[];
  final saved = <Exercise>[];
  var referenced = false;

  @override
  Future<Exercise?> findById(String id) async {
    for (final exercise in exercises) {
      if (exercise.metadata.id == id) {
        return exercise;
      }
    }
    return null;
  }

  @override
  Future<bool> isReferencedByProgram(String id) async => referenced;

  @override
  Future<List<Exercise>> listActive() async => exercises;

  @override
  Future<void> save(Exercise exercise) async {
    saved.add(exercise);
    exercises.removeWhere((item) => item.metadata.id == exercise.metadata.id);
    exercises.add(exercise);
  }
}

final class _FakeMediaAssetRepository implements MediaAssetRepository {
  final saved = <MediaAsset>[];

  @override
  Future<MediaAsset?> findById(String id) async {
    for (final asset in saved) {
      if (asset.metadata.id == id) {
        return asset;
      }
    }
    return null;
  }

  @override
  Future<List<MediaAsset>> listActive() async => saved;

  @override
  Future<void> save(MediaAsset mediaAsset) async {
    saved.add(mediaAsset);
  }
}

final class _FakeMediaStorage implements LocalMediaStorage {
  final imports = <_MediaImportCall>[];

  @override
  Future<void> deleteByLocalUri(String localUri) async {}

  @override
  Future<StoredMediaFile> importFile({
    required String sourcePath,
    required MediaKind kind,
    required String stableFileName,
  }) async {
    imports.add(
      _MediaImportCall(
        sourcePath: sourcePath,
        kind: kind,
        stableFileName: stableFileName,
      ),
    );
    return StoredMediaFile(
      localUri: 'file:///tmp/$stableFileName',
      mimeType: kind == MediaKind.image ? 'image/png' : 'video/mp4',
      sizeBytes: 1,
    );
  }

  @override
  Future<Set<String>> listManagedLocalUris() async => const {};
}

final class _MediaImportCall {
  const _MediaImportCall({
    required this.sourcePath,
    required this.kind,
    required this.stableFileName,
  });

  final String sourcePath;
  final MediaKind kind;
  final String stableFileName;
}