// lib/models/playlist.dart
import 'package:qingting_player/services/audio_service.dart';

class Playlist {
  final String id;
  final String name;
  final PlayMode playMode;
  final DateTime createdAt;
  final DateTime updatedAt;

  Playlist({
    required this.id,
    required this.name,
    this.playMode = PlayMode.sequential,
    DateTime? createdAt,
    DateTime? updatedAt,
  })  : createdAt = createdAt ?? DateTime.now(),
        updatedAt = updatedAt ?? DateTime.now();

  Map<String, dynamic> toJson() => {
        'id': id,
        'name': name,
        'play_mode': Playlist.playModeToString(playMode), // ⭐ 改用公开静态方法
        'created_at': createdAt.millisecondsSinceEpoch,
        'updated_at': updatedAt.millisecondsSinceEpoch,
      };

  factory Playlist.fromJson(Map<String, dynamic> json) => Playlist(
        id: json['id'] as String,
        name: json['name'] as String,
        playMode: Playlist.stringToPlayMode(
            json['play_mode'] as String? ?? 'sequential'),
        createdAt:
            DateTime.fromMillisecondsSinceEpoch(json['created_at'] as int),
        updatedAt:
            DateTime.fromMillisecondsSinceEpoch(json['updated_at'] as int),
      );

  Playlist copyWith({String? name, PlayMode? playMode}) => Playlist(
        id: id,
        name: name ?? this.name,
        playMode: playMode ?? this.playMode,
        createdAt: createdAt,
        updatedAt: DateTime.now(),
      );

  // ⭐ 改为公开静态方法
  static String playModeToString(PlayMode mode) {
    switch (mode) {
      case PlayMode.sequential:
        return 'sequential';
      case PlayMode.repeatOne:
        return 'repeat_one';
      case PlayMode.shuffle:
        return 'shuffle';
    }
  }

  static PlayMode stringToPlayMode(String value) {
    switch (value) {
      case 'repeat_one':
        return PlayMode.repeatOne;
      case 'shuffle':
        return PlayMode.shuffle;
      default:
        return PlayMode.sequential;
    }
  }
}