import 'package:flutter/material.dart';
import 'package:just_audio_background/just_audio_background.dart';
import 'package:just_audio_media_kit/just_audio_media_kit.dart';
import 'package:ocarina/api/subsonic/song.dart';
import 'package:ocarina/views/home_view.dart';
import 'package:ocarina/widgets/player.dart';
import 'package:responsive_sizer/responsive_sizer.dart';
import 'package:shared_preferences/shared_preferences.dart';

void main() async {
  JustAudioMediaKit.ensureInitialized();
  WidgetsFlutterBinding.ensureInitialized();

  await JustAudioBackground.init(
    androidNotificationChannelId: 'wtf.caras.ocarina.bg_playback',
    androidNotificationChannelName: 'Ocarina playback',
    androidNotificationOngoing: true,
  );

  sp = await SharedPreferences.getInstance();
  runApp(const MyApp());
}

/// [GlobalKey] used to set the [Player]'s state from other code
final playerKey = GlobalKey<PlayerState>();

/// Instance of [SharedPreferences] used to get shared preferences
late final SharedPreferences sp;

/// Notifier to change theme from inside the app
final ValueNotifier<ColorScheme> themeNotifier =
    ValueNotifier(ColorScheme.fromSeed(seedColor: Colors.deepPurple));

/// Notifier to change theme from inside the app
final ValueNotifier<Song?> songNotifier = ValueNotifier(null);

/// Main app class
class MyApp extends StatelessWidget {
  /// Main app class
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return ResponsiveSizer(
      builder: (context, orientation, screenType) {
        return ValueListenableBuilder<ColorScheme>(
          valueListenable: themeNotifier,
          builder: (BuildContext context, ColorScheme value, Widget? child) {
            return MaterialApp(
              title: 'Ocarina',
              theme: ThemeData(
                colorScheme: value,
                useMaterial3: true,
              ),
              home: const HomeView(),
              builder: (context, child) {
                return Stack(
                  children: [
                    child!,
                    Player(
                      key: playerKey,
                    ),
                  ],
                );
              },
            );
          },
        );
      },
    );
  }
}