import '../core/network/api_client.dart';
import '../core/network/endpoints.dart';

/// 钱包信息（《03-接口文档》4.4）
class WalletInfo {
  const WalletInfo({
    this.points = 0,
    this.totalRecharge = 0,
    this.totalEarned = 0,
    this.totalConsumed = 0,
    this.rewardProgress = const CommentRewardProgress(),
  });

  final int points;
  final int totalRecharge;
  final int totalEarned;
  final int totalConsumed;
  final CommentRewardProgress rewardProgress;

  factory WalletInfo.fromJson(Map<String, dynamic> json) => WalletInfo(
        points: (json['points'] as num?)?.toInt() ?? 0,
        totalRecharge: (json['total_recharge'] as num?)?.toInt() ?? 0,
        totalEarned: (json['total_earned'] as num?)?.toInt() ?? 0,
        totalConsumed: (json['total_consumed'] as num?)?.toInt() ?? 0,
        rewardProgress: CommentRewardProgress.fromJson(
          (json['comment_reward_progress'] as Map<String, dynamic>?) ??
              const {},
        ),
      );
}

/// 评论奖励进度
class CommentRewardProgress {
  const CommentRewardProgress({
    this.current = 0,
    this.target = 10,
    this.todayRewarded = 0,
    this.dailyLimit = 5,
  });

  final int current;
  final int target;
  final int todayRewarded;
  final int dailyLimit;

  factory CommentRewardProgress.fromJson(Map<String, dynamic> json) =>
      CommentRewardProgress(
        current: (json['current'] as num?)?.toInt() ?? 0,
        target: (json['target'] as num?)?.toInt() ?? 10,
        todayRewarded: (json['today_rewarded'] as num?)?.toInt() ?? 0,
        dailyLimit: (json['daily_limit'] as num?)?.toInt() ?? 5,
      );
}

/// 积分明细记录（《03-接口文档》4.5）
class PointsRecord {
  const PointsRecord({
    required this.id,
    required this.changeAmount,
    required this.balanceAfter,
    required this.bizType,
    this.remark = '',
    this.createdAt = '',
  });

  final int id;

  /// 正=获得，负=消耗
  final int changeAmount;
  final int balanceAfter;

  /// 1充值 2观看 3评论奖励 4会员 5赠送 6调整 7扣回
  final int bizType;
  final String remark;
  final String createdAt;

  static const Map<int, String> bizTypeLabels = {
    1: '充值',
    2: '观看',
    3: '评论奖励',
    4: '会员',
    5: '赠送',
    6: '调整',
    7: '扣回',
  };

  String get bizTypeLabel => bizTypeLabels[bizType] ?? '其他';
  bool get isExpense => changeAmount < 0;

  factory PointsRecord.fromJson(Map<String, dynamic> json) => PointsRecord(
        id: (json['id'] as num).toInt(),
        changeAmount: (json['change_amount'] as num).toInt(),
        balanceAfter: (json['balance_after'] as num).toInt(),
        bizType: (json['biz_type'] as num).toInt(),
        remark: (json['remark'] as String?) ?? '',
        createdAt: (json['created_at'] as String?) ?? '',
      );
}

/// 积分明细分页
class PointsRecordsPage {
  const PointsRecordsPage({required this.total, required this.items});

  final int total;
  final List<PointsRecord> items;

  factory PointsRecordsPage.fromJson(Map<String, dynamic> json) =>
      PointsRecordsPage(
        total: (json['total'] as num?)?.toInt() ?? 0,
        items: ((json['list'] as List?) ?? const [])
            .whereType<Map<String, dynamic>>()
            .map(PointsRecord.fromJson)
            .toList(),
      );
}

/// 钱包服务（《03-接口文档》4.4/4.5）
class WalletService {
  WalletService._();

  /// 4.4 钱包信息（需登录）
  static Future<WalletInfo> fetchWallet() async {
    final data = await ApiClient.get<Map<String, dynamic>>(Endpoints.meWallet);
    return WalletInfo.fromJson(data);
  }

  /// 4.5 积分明细（需登录）
  static Future<PointsRecordsPage> fetchPointsRecords({
    int page = 1,
    int pageSize = 20,
    int? bizType,
  }) async {
    final query = <String, dynamic>{'page': page, 'page_size': pageSize};
    if (bizType != null) query['biz_type'] = bizType;
    final data = await ApiClient.get<Map<String, dynamic>>(
      Endpoints.mePointsRecords,
      queryParameters: query,
    );
    return PointsRecordsPage.fromJson(data);
  }
}