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_screen.dart';
import 'package:melo/library/library_service.dart';
import 'package:melo/library/playlist_service.dart';
import 'package:melo/player/audio_handler.dart';

Widget _wrap(
  MeloDb db,
  LibraryService lib,
  PlaylistService playlists,
  MeloAudioHandler handler,
  Widget child,
) {
  return MultiProvider(
    providers: [
      Provider<MeloDb>.value(value: db),
      ChangeNotifierProvider<LibraryService>.value(value: lib),
      ChangeNotifierProvider<PlaylistService>.value(value: playlists),
      Provider<MeloAudioHandler>.value(value: handler),
    ],
    child: MaterialApp(home: child),
  );
}

Future<void> _insertSong(
  MeloDb db, {
  required String id,
  required String title,
  String? artist,
  String? album,
}) {
  return db.into(db.songs).insert(SongsCompanion.insert(
        id: id,
        path: '/$id.mp3',
        title: title,
        artist: Value(artist),
        album: Value(album),
        dateAddedMs: 0,
        updatedAtMs: 0,
      ));
}

void main() {
  testWidgets('zeigt die drei Bibliotheks-Tabs "Alle", "Künstler", "Alben"',
      (tester) async {
    final db = MeloDb(NativeDatabase.memory());
    final lib = LibraryService(db);
    final playlists = PlaylistService(db);
    final handler = MeloAudioHandler(db: db);

    await tester.pumpWidget(
      _wrap(db, lib, playlists, handler, const LibraryScreen()),
    );
    await tester.pumpAndSettle();

    expect(find.text('Alle'), findsOneWidget);
    expect(find.text('Künstler'), findsOneWidget);
    expect(find.text('Alben'), findsOneWidget);

    handler.dispose();
    await db.close();
  });

  testWidgets('Künstler-Tab zeigt je Künstler eine Zeile', (tester) async {
    final db = MeloDb(NativeDatabase.memory());
    final lib = LibraryService(db);
    final playlists = PlaylistService(db);
    final handler = MeloAudioHandler(db: db);
    await _insertSong(db, id: '1', title: 'Song A', artist: 'Alice');
    await _insertSong(db, id: '2', title: 'Song B', artist: 'Bob');

    await tester.pumpWidget(
      _wrap(db, lib, playlists, handler, const LibraryScreen()),
    );
    await tester.pumpAndSettle();

    await tester.tap(find.text('Künstler'));
    await tester.pumpAndSettle();

    expect(find.text('Alice'), findsOneWidget);
    expect(find.text('Bob'), findsOneWidget);
    expect(find.text('1 Songs'), findsNWidgets(2));

    handler.dispose();
    await db.close();
  });

  testWidgets('Alben-Tab zeigt je Album eine Zeile', (tester) async {
    final db = MeloDb(NativeDatabase.memory());
    final lib = LibraryService(db);
    final playlists = PlaylistService(db);
    final handler = MeloAudioHandler(db: db);
    await _insertSong(db, id: '1', title: 'Song A', artist: 'Alice', album: 'Best Of');

    await tester.pumpWidget(
      _wrap(db, lib, playlists, handler, const LibraryScreen()),
    );
    await tester.pumpAndSettle();

    await tester.tap(find.text('Alben'));
    await tester.pumpAndSettle();

    expect(find.text('Best Of'), findsOneWidget);

    handler.dispose();
    await db.close();
  });
}