import 'package:hgdj/config/address.dart' as address;
import 'package:hgdj/hj_model/drama/drama_models.dart';
import 'package:hgdj/hj_model/video_model.dart';
import 'package:path/path.dart' as path;

/// 作品的「一集」：漫画一话 / 小说一章 / 有声一集 / 短剧一集 共用这一个模型，
/// 所以字段是几种业务的并集，取值时按自己的业务挑（如短剧只关心视频与解锁那几个）
class MediaContent {
  // ===== 标识 =====
  String? id; //本集 id
  String? mediaId; //所属作品(剧/漫画/小说)的 id
  int? episodeNumber; //第几集/第几话，从 1 开始
  String? name; //集名，如「第1集」
  String? cover; //本集封面，短剧多为空、回退用剧封面

  // ===== 资源 =====
  String? videoUrl; //视频相对路径(m3u8)，要拼 baseApiPath 才能播
  String? h265Url; //H.265 源，为空表示这一集没有 265
  String? audioUrl; //有声书音频，见 realAudioUrl
  List<String>? urlSet; //多清晰度地址集合，短剧下发空数组
  String? text; //小说正文
  String? md5;
  int? playTime; //时长(秒)
  int? mediaSize; //文件字节数
  int? height; //视频高
  int? weight; //视频宽（后端字段就叫 weight，不是重量）
  double? ratio; //宽高比，0 表示后端没算

  // ===== 权限 / 付费 =====
  //0会员 1金币购买 2免费。**只用于展示**，能不能播看 canPlay
  int? listenPermission;
  int? price; //单集金币价，0 为免费
  bool? hasBuy; //本集是否已单独购买过
  bool? isFree; //本集是否免费，别再用整部的 freeEpisode 自己算
  bool? canPlay; //能不能播只认这个字段
  String? accessType; // free 免费 / bought 已购 / card 短剧卡 / coin 未解锁
  DramaPaywall? paywall; //付费墙文案与价格，canPlay=false 时必有，能播时为 null
  bool? isActive; //是否上架，下架的集不该出现在选集面板

  // ===== 试看（feed / list / info 三个接口都下发）=====
  bool? previewEnabled; //这一集配没配试看
  int? previewStart; //试看起播秒数，0 = 从头
  int? previewSeconds; //试看时长(秒)，从 previewStart 起算，到点停下挂付费墙
  String? previewVideoUrl; //试看片地址，与 videoUrl 同格式
  String? previewH265Url; //试看片的 265 源，为空表示没有

  // ===== 统计 =====
  int? countBrowse;
  int? countCollect;
  int? countComment;
  int? countDisLike;
  int? countLike;
  int? countPurchases;
  VidStatus? mediaStatus; //本集的已购/已收藏/已点赞状态

  // ===== 时间 =====
  String? createdAt;
  String? updateTime;

  //只用来造空 model 占位（拉详情失败时页面据此走错误态），字段一律走 fromJson 赋值
  MediaContent();

  MediaContent.fromJson(dynamic json) {
    json ??= {};
    id = json['id'];
    mediaId = json['mediaId'];
    episodeNumber = json['episodeNumber'];
    name = json['name'];
    cover = json['cover'];

    videoUrl = json['videoUrl'];
    h265Url = json['h265Url'];
    audioUrl = json['audioUrl'];
    //用 is List 判而不是 as List：下发 null 或非数组时硬 cast 会抛，整条分集就解析不出来
    final rawUrlSet = json['urlSet'];
    urlSet =
        rawUrlSet is List ? rawUrlSet.map((e) => e.toString()).toList() : [];
    text = json['text'];
    md5 = json['md5'];
    playTime = json['playTime'];
    mediaSize = json['mediaSize'];
    height = json['height'];
    weight = json['weight'];
    //数字直接转；后端也可能下发字符串("1.5")，那时才走 parse，脏值落 null
    final rawRatio = json['ratio'];
    ratio = rawRatio is num
        ? rawRatio.toDouble()
        : double.tryParse(rawRatio?.toString() ?? '');

    listenPermission = json['listenPermission'];
    price = json['price'];
    hasBuy = json['hasBuy'];
    isFree = json['isFree'];
    canPlay = json['canPlay'];
    accessType = json['accessType'];
    paywall =
        json['paywall'] != null ? DramaPaywall.fromJson(json['paywall']) : null;
    isActive = json['isActive'];

    previewEnabled = json['previewEnabled'];
    previewStart = json['previewStart'];
    previewSeconds = json['previewSeconds'];
    previewVideoUrl = json['previewVideoUrl'];
    previewH265Url = json['previewH265Url'];

    countBrowse = json['countBrowse'];
    countCollect = json['countCollect'];
    countComment = json['countComment'];
    countDisLike = json['countDisLike'];
    countLike = json['countLike'];
    countPurchases = json['countPurchases'];
    mediaStatus = json['mediaStatus'] != null
        ? VidStatus.fromMap(json['mediaStatus'])
        : null;

    createdAt = json['createdAt'];
    updateTime = json['updateTime'];
  }

  /// 只给浏览历史落库用（经 CartoonMediaInfo.toJson → HistoryUtil）。
  /// paywall 和 preview* 都是这次请求的临时状态、下次进来要重新拉，故意不存
  Map<String, dynamic> toJson() {
    return {
      'id': id,
      'mediaId': mediaId,
      'episodeNumber': episodeNumber,
      'name': name,
      'cover': cover,
      'videoUrl': videoUrl,
      'h265Url': h265Url,
      'audioUrl': audioUrl,
      'urlSet': urlSet,
      'text': text,
      'md5': md5,
      'playTime': playTime,
      'mediaSize': mediaSize,
      'height': height,
      'weight': weight,
      'ratio': ratio,
      'listenPermission': listenPermission,
      'price': price,
      'hasBuy': hasBuy,
      'isFree': isFree,
      'canPlay': canPlay,
      'accessType': accessType,
      'isActive': isActive,
      'countBrowse': countBrowse,
      'countCollect': countCollect,
      'countComment': countComment,
      'countDisLike': countDisLike,
      'countLike': countLike,
      'countPurchases': countPurchases,
      if (mediaStatus != null) 'mediaStatus': mediaStatus?.toJson(),
      'createdAt': createdAt,
      'updateTime': updateTime,
    };
  }

  /// 有声书音频完整地址：相对路径要拼音频 CDN，已是 http(s) 的直接用。
  /// 目前有声书播的是 ComicChapterInfo 里的同名实现，这里留着与 audioUrl 字段配套
  String get realAudioUrl {
    final url = audioUrl;
    if (url?.isNotEmpty != true) return '';
    if (url!.startsWith('http')) return url;
    return path.join(address.Address.audioCdnAddress ?? '', url);
  }
}