import 'package:drift/drift.dart';
import 'package:drift/native.dart';
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:provider/provider.dart';
import 'package:melo/library/database.dart';
import 'package:melo/library/library_service.dart';
import 'package:melo/services/baka_auth.dart';
import 'package:melo/services/melo_cloud_service.dart';
import 'package:melo/services/offline_mode.dart';
import 'package:melo/services/sync_service.dart';
import 'package:melo/settings/app_settings.dart';
import 'package:melo/settings/settings_screen.dart';

/// Token-Ablage ohne Plattform-Kanäle — im Test gibt es keinen sicheren
/// Gerätespeicher.
class _MemorySpeicher implements TokenSpeicher {
  final Map<String, String> werte = {};
  @override
  Future<String?> lesen(String key) async => werte[key];
  @override
  Future<void> schreiben(String key, String wert) async => werte[key] = wert;
  @override
  Future<void> loeschen(String key) async => werte.remove(key);
}

Widget _wrap(MeloDb db, Widget child) {
  return MultiProvider(
    providers: [
      Provider<MeloDb>.value(value: db),
      ChangeNotifierProvider<OfflineMode>.value(value: OfflineMode()),
      ChangeNotifierProvider<LibraryService>.value(value: LibraryService(db)),
      ChangeNotifierProvider<AppSettings>(create: (_) => AppSettings()),
      ChangeNotifierProvider<BakaAuth>(
          create: (_) => BakaAuth(speicher: _MemorySpeicher())),
      ChangeNotifierProvider<SyncService>(
          create: (context) => SyncService(
                db: db,
                cloud: MeloCloudService(auth: context.read<BakaAuth>()),
              )),
    ],
    child: MaterialApp(home: child),
  );
}

void main() {
  testWidgets('zeigt 0 Songs ohne Bibliothek', (tester) async {
    final db = MeloDb(NativeDatabase.memory());

    await tester.pumpWidget(_wrap(db, const SettingsScreen()));
    await tester.pumpAndSettle();

    expect(find.text('0 Songs in der Bibliothek'), findsOneWidget);

    await db.close();
  });

  testWidgets('zeigt korrekte Song-Anzahl und Gesamtspieldauer', (tester) async {
    final db = MeloDb(NativeDatabase.memory());
    await db.into(db.songs).insert(SongsCompanion.insert(
          id: 'song-1',
          path: '/a.mp3',
          title: 'Song A',
          dateAddedMs: 0,
          updatedAtMs: 0,
          durationMs: const Value(200000),
        ));
    await db.into(db.songs).insert(SongsCompanion.insert(
          id: 'song-2',
          path: '/b.mp3',
          title: 'Song B',
          dateAddedMs: 0,
          updatedAtMs: 0,
          durationMs: const Value(185000),
        ));

    await tester.pumpWidget(_wrap(db, const SettingsScreen()));
    await tester.pumpAndSettle();

    expect(find.text('2 Songs in der Bibliothek'), findsOneWidget);
    expect(find.text('6m Gesamtspieldauer'), findsOneWidget);

    await db.close();
  });

  testWidgets('zeigt Favoriten- und Playlisten-Sync', (tester) async {
    final db = MeloDb(NativeDatabase.memory());

    await tester.pumpWidget(_wrap(db, const SettingsScreen()));
    await tester.pumpAndSettle();

    // Die Sync-Einträge liegen weiter unten in der Liste und müssen erst
    // in den sichtbaren Bereich gescrollt werden.
    await tester.scrollUntilVisible(find.text('🌟 Favoriten-Sync'), 200);
    await tester.pumpAndSettle();

    expect(find.text('🌟 Favoriten-Sync'), findsOneWidget);
    expect(find.text('📋 Playlisten-Sync'), findsOneWidget);

    await db.close();
  });
}