import 'dart:convert';

class SCMusicMode {
  SCMusicMode({
    String? id,
    String? title,
    String? artist,
    int? duration,
    int? durationMs,
    String? localPath,
    String? contentUri,
    String? folderPath,
    String? fileName,
    int? size,
    int? sortIndex,
    int? addedAt,
  }) {
    _id = id;
    _title = title;
    _artist = artist;
    _durationMs = durationMs ?? duration;
    _localPath = localPath;
    _contentUri = contentUri;
    _folderPath = folderPath;
    _fileName = fileName;
    _size = size;
    _sortIndex = sortIndex;
    _addedAt = addedAt;
  }

  String? _id;
  String? _title;
  String? _artist;
  int? _durationMs;
  String? _localPath;
  String? _contentUri;
  String? _folderPath;
  String? _fileName;
  int? _size;
  int? _sortIndex;
  int? _addedAt;

  String get id {
    final rawId = (_id ?? "").trim();
    if (rawId.isNotEmpty) {
      return rawId;
    }
    final source = playPath.isNotEmpty ? playPath : title;
    return base64Url.encode(utf8.encode(source)).replaceAll('=', '');
  }

  String get title => (_title ?? _fileName ?? "").trim();

  String get artist => (_artist ?? "").trim();

  int get durationMs => _durationMs ?? 0;

  int get duration => durationMs;

  String get localPath => (_localPath ?? "").trim();

  String get contentUri => (_contentUri ?? "").trim();

  String get folderPath => (_folderPath ?? "").trim();

  String get fileName => (_fileName ?? title).trim();

  int get size => _size ?? 0;

  int get sortIndex => _sortIndex ?? 0;

  int get addedAt => _addedAt ?? 0;

  String get playPath => contentUri.isNotEmpty ? contentUri : localPath;

  bool get hasPlayablePath => playPath.isNotEmpty;

  SCMusicMode copyWith({
    String? id,
    String? title,
    String? artist,
    int? durationMs,
    String? localPath,
    String? contentUri,
    String? folderPath,
    String? fileName,
    int? size,
    int? sortIndex,
    int? addedAt,
  }) {
    return SCMusicMode(
      id: id ?? _id,
      title: title ?? _title,
      artist: artist ?? _artist,
      durationMs: durationMs ?? _durationMs,
      localPath: localPath ?? _localPath,
      contentUri: contentUri ?? _contentUri,
      folderPath: folderPath ?? _folderPath,
      fileName: fileName ?? _fileName,
      size: size ?? _size,
      sortIndex: sortIndex ?? _sortIndex,
      addedAt: addedAt ?? _addedAt,
    );
  }

  Map<String, dynamic> toJson() {
    final map = <String, dynamic>{};
    map['id'] = _id;
    map['title'] = _title;
    map['artist'] = _artist;
    map['duration'] = _durationMs;
    map['durationMs'] = _durationMs;
    map['localPath'] = _localPath;
    map['contentUri'] = _contentUri;
    map['folderPath'] = _folderPath;
    map['fileName'] = _fileName;
    map['size'] = _size;
    map['sortIndex'] = _sortIndex;
    map['addedAt'] = _addedAt;
    return map;
  }

  SCMusicMode.fromJson(dynamic json) {
    if (json is! Map) {
      return;
    }
    _id = json['id']?.toString();
    _title = json['title']?.toString();
    _artist = json['artist']?.toString();
    _durationMs = _asInt(json['durationMs'] ?? json['duration']);
    _localPath = json['localPath']?.toString();
    _contentUri = json['contentUri']?.toString();
    _folderPath = json['folderPath']?.toString();
    _fileName = json['fileName']?.toString();
    _size = _asInt(json['size']);
    _sortIndex = _asInt(json['sortIndex']);
    _addedAt = _asInt(json['addedAt']);
  }

  static int? _asInt(dynamic value) {
    if (value is int) {
      return value;
    }
    if (value is num) {
      return value.toInt();
    }
    return int.tryParse(value?.toString() ?? "");
  }
}