import 'package:equatable/equatable.dart';

import 'artist.dart';
import 'album.dart';

/// Track entity
class Track extends Equatable {
  final String id;
  final String title;
  final int? duration;
  final int? trackNumber;
  final String? imageUrl;
  final String? artistId;
  final String? albumId;
  final Artist? artist;
  final Album? album;
  final String? audioUrl;
  final int? playCount;
  final String? youtubeId;
  final DateTime createdAt;
  final DateTime updatedAt;

  const Track({
    required this.id,
    required this.title,
    this.duration,
    this.trackNumber,
    this.imageUrl,
    this.artistId,
    this.albumId,
    this.artist,
    this.album,
    this.audioUrl,
    this.playCount,
    this.youtubeId,
    required this.createdAt,
    required this.updatedAt,
  });

  Track copyWith({
    String? id,
    String? title,
    int? duration,
    int? trackNumber,
    String? imageUrl,
    String? artistId,
    String? albumId,
    Artist? artist,
    Album? album,
    String? audioUrl,
    int? playCount,
    String? youtubeId,
    DateTime? createdAt,
    DateTime? updatedAt,
  }) {
    return Track(
      id: id ?? this.id,
      title: title ?? this.title,
      duration: duration ?? this.duration,
      trackNumber: trackNumber ?? this.trackNumber,
      imageUrl: imageUrl ?? this.imageUrl,
      artistId: artistId ?? this.artistId,
      albumId: albumId ?? this.albumId,
      artist: artist ?? this.artist,
      album: album ?? this.album,
      audioUrl: audioUrl ?? this.audioUrl,
      playCount: playCount ?? this.playCount,
      youtubeId: youtubeId ?? this.youtubeId,
      createdAt: createdAt ?? this.createdAt,
      updatedAt: updatedAt ?? this.updatedAt,
    );
  }

  /// Format duration as mm:ss
  String get formattedDuration {
    if (duration == null) return '--:--';
    final minutes = duration! ~/ 60;
    final seconds = duration! % 60;
    return '${minutes.toString().padLeft(2, '0')}:${seconds.toString().padLeft(2, '0')}';
  }

  /// Create Track from JSON
  factory Track.fromJson(Map<String, dynamic> json) {
    return Track(
      id: json['id'] as String,
      title: json['title'] as String,
      duration: json['duration'] as int?,
      trackNumber: json['track_number'] as int?,
      imageUrl: json['image_url'] as String?,
      artistId: json['artist_id'] as String?,
      albumId: json['album_id'] as String?,
      artist: json['artist'] != null
          ? Artist.fromJson(json['artist'] as Map<String, dynamic>)
          : null,
      album: json['album'] != null
          ? Album.fromJson(json['album'] as Map<String, dynamic>)
          : null,
      audioUrl: json['audio_url'] as String?,
      playCount: json['play_count'] as int?,
      youtubeId: json['youtube_id'] as String?,
      createdAt: json['created_at'] != null
          ? DateTime.parse(json['created_at'] as String)
          : DateTime.now(),
      updatedAt: json['updated_at'] != null
          ? DateTime.parse(json['updated_at'] as String)
          : DateTime.now(),
    );
  }

  @override
  List<Object?> get props => [
        id,
        title,
        duration,
        artistId,
        albumId,
        youtubeId,
      ];
}