// lib/services/favorite_events.dart
import 'dart:async';

/// 收藏状态变化事件。
///
/// 文件列表、播放页都能收藏/取消收藏，主页的收藏列表需要跟着变，
/// 否则要退出重进才看得到。
class FavoriteEvents {
  static final FavoriteEvents _instance = FavoriteEvents._internal();
  factory FavoriteEvents() => _instance;
  FavoriteEvents._internal();

  final StreamController<String> _controller =
      StreamController<String>.broadcast();

  Stream<String> get stream => _controller.stream;

  void publish(String songPath) {
    if (songPath.isEmpty) return;
    _controller.add(songPath);
  }
}