import 'package:hgdj/hj_model/drama_media_info.dart';
import 'package:hgdj/hj_model/media_content.dart';

/// 一条短剧观看记录：续播位置 + 列表展示用的剧信息快照。本地记录，不走后端，见 [DramaResumeStore]。
/// 落库时整条存成 model_data，所以 [mediaId] 必须写进 json——
/// 基类只回 model_data 一列，读盘时全靠它认领是哪部剧
class DramaResume {
  final String mediaId; //哪部剧，同时是行主键
  final String contentId; //上次看的分集。定位只认它，别再存「第几集」——分页深度靠边翻边找就够了
  final int progressSeconds; //看到第几秒

  /// 剧信息快照(封面/剧名/集数)。续播定位用不到，是历史记录页拿它画卡片——
  /// 只存 id 的话列表除了 id 什么都渲染不出来
  final DramaMediaInfo? drama;

  /// 本条写入时刻(毫秒)。历史记录页按它倒序，不看 db 的 create_time——
  /// 老数据没这个字段，读出来是 0，排在最后
  final int watchedAt;

  const DramaResume({
    required this.mediaId,
    required this.contentId,
    required this.progressSeconds,
    this.drama,
    this.watchedAt = 0,
  });

  DramaResume.fromJson(dynamic json)
      : mediaId = json?['mediaId'] ?? '',
        contentId = json?['contentId'] ?? '',
        progressSeconds = json?['progressSeconds'] ?? 0,
        drama = json?['drama'] == null
            ? null
            : DramaMediaInfo.fromJson(json['drama']),
        watchedAt = json?['watchedAt'] ?? 0;

  Map<String, dynamic> toJson() => {
        'mediaId': mediaId,
        'contentId': contentId,
        'progressSeconds': progressSeconds,
        'drama': drama?.toJson(),
        'watchedAt': watchedAt,
      };
}

/// 付费墙：文案/价格/余额全部服务端下发，前端不自己拼
class DramaPaywall {
  String? checkoutContextId; //本次付费墙上下文，充值/开卡归因和下单都要带
  String? title;
  int? coinBalance;
  int? unlockCoin;
  String? coinButtonText;
  String? cardButtonText;

  DramaPaywall.fromJson(dynamic json) {
    json ??= {};
    checkoutContextId = json['checkoutContextId'];
    title = json['title'];
    coinBalance = json['coinBalance'];
    unlockCoin = json['unlockCoin'];
    coinButtonText = json['coinButtonText'];
    cardButtonText = json['cardButtonText'];
  }

  String get titleUI => title?.isNotEmpty == true ? title! : '更多精彩解锁即享';

  String get coinButtonUI => coinButtonText?.isNotEmpty == true
      ? coinButtonText!
      : '${unlockCoin ?? 0}金币解锁';

  String get cardButtonUI =>
      cardButtonText?.isNotEmpty == true ? cardButtonText! : '开通短剧卡免费看';
}

/// AI短剧 Feed 的一条：某部剧 + 该剧第一集。整页走 ListBaseModel<DramaFeedItem>
class DramaFeedItem {
  DramaMediaInfo? media;
  MediaContent? content;

  DramaFeedItem.fromJson(dynamic json) {
    json ??= {};
    //缺 media 就不造空模型，上层按 null 过滤掉这条，别让信息流多出一个没剧名没地址的空位
    if (json['media'] != null) media = DramaMediaInfo.fromJson(json['media']);
    if (json['content'] != null)
      content = MediaContent.fromJson(json['content']);
  }
}

/// 短剧专题（热门短剧 Tab）
class DramaTopic {
  String? topicId;
  String? name;
  String? topicType;
  String? systemKey;
  int? sort;
  int? workCount;

  DramaTopic({
    this.topicId,
    this.name,
    this.topicType,
    this.systemKey,
    this.sort,
    this.workCount,
  });

  DramaTopic.fromJson(dynamic json) {
    json ??= {};
    topicId = json['topicId']?.toString();
    name = json['name']?.toString();
    topicType = json['topicType']?.toString();
    systemKey = json['systemKey']?.toString();
    sort = json['sort'] is int
        ? json['sort'] as int
        : int.tryParse('${json['sort'] ?? ''}');
    workCount = json['workCount'] is int
        ? json['workCount'] as int
        : int.tryParse('${json['workCount'] ?? ''}');
  }
}

/// 短剧搜索结果（`/media/search` kind=4）
class DramaSearchResult {
  List<DramaMediaInfo> list = [];
  List<DramaMediaInfo> tagMediaList = [];
  String? tagID;
  bool hasNext = false;

  DramaSearchResult.fromJson(dynamic json) {
    json ??= {};
    hasNext = json['hasNext'] == true;
    tagID = json['tagID']?.toString();
    list = (json['list'] as List?)
            ?.map((e) => DramaMediaInfo.fromJson(e))
            .toList() ??
        [];
    tagMediaList = (json['tagMediaList'] as List?)
            ?.map((e) => DramaMediaInfo.fromJson(e))
            .toList() ??
        [];
  }
}

/// 单集金币解锁的下单结果
class DramaUnlockResult {
  String? orderId;
  String? mediaId;
  String? contentId;
  int? paidCoin;
  int? coinBalance;

  DramaUnlockResult.fromJson(Map<String, dynamic>? json) {
    json ??= {};
    orderId = json['orderId'];
    mediaId = json['mediaId'];
    contentId = json['contentId'];
    paidCoin = json['paidCoin'];
    coinBalance = json['coinBalance'];
  }
}

/// 短剧单集下载授权结果。权益/上下架/次数校验和扣次都在服务端一次做完，
/// 客户端只负责拿地址开下载，不再自己算次数
class DramaDownloadAuth {
  String? mediaId;
  String? contentId;
  int? episodeNumber;
  String? name;
  String? cover;
  String? downloadUrl; // H.264 m3u8，可能是相对地址
  String? h265DownloadUrl; // H.265 m3u8，没有时为空串
  int? mediaSize; // 字节
  String? expiresAt; // 本次地址失效时间(签发后 6 小时)
  int? remainingDownloadCount; // 扣完之后钱包剩余下载次数，直接用它顶掉本地值
  bool? charged; // false = 幂等重试命中，没有重复扣次

  DramaDownloadAuth.fromJson(Map<String, dynamic>? json) {
    json ??= {};
    mediaId = json['mediaId'];
    contentId = json['contentId'];
    episodeNumber = json['episodeNumber'];
    name = json['name'];
    cover = json['cover'];
    downloadUrl = json['downloadUrl'];
    h265DownloadUrl = json['h265DownloadUrl'];
    mediaSize = json['mediaSize'];
    expiresAt = json['expiresAt'];
    remainingDownloadCount = json['remainingDownloadCount'];
    charged = json['charged'] == true;
  }
}