/// 推荐信息响应 (来自 referral-service)
class ReferralInfoResponse {
  final String userId;
  final String referralCode;
  final String? referrerId;
  final int referralChainDepth;
  final int directReferralCount;
  final int totalTeamCount;
  final int personalPlantingCount;
  final int teamPlantingCount;
  final double leaderboardScore;
  final int? leaderboardRank;
  final DateTime createdAt;

  ReferralInfoResponse({
    required this.userId,
    required this.referralCode,
    this.referrerId,
    required this.referralChainDepth,
    required this.directReferralCount,
    required this.totalTeamCount,
    required this.personalPlantingCount,
    required this.teamPlantingCount,
    required this.leaderboardScore,
    this.leaderboardRank,
    required this.createdAt,
  });

  factory ReferralInfoResponse.fromJson(Map<String, dynamic> json) {
    return ReferralInfoResponse(
      userId: json['userId']?.toString() ?? '',
      referralCode: json['referralCode'] ?? '',
      referrerId: json['referrerId']?.toString(),
      referralChainDepth: json['referralChainDepth'] ?? 0,
      directReferralCount: json['directReferralCount'] ?? 0,
      totalTeamCount: json['totalTeamCount'] ?? 0,
      personalPlantingCount: json['personalPlantingCount'] ?? 0,
      teamPlantingCount: json['teamPlantingCount'] ?? 0,
      leaderboardScore: (json['leaderboardScore'] ?? 0).toDouble(),
      leaderboardRank: json['leaderboardRank'],
      createdAt: json['createdAt'] != null
          ? DateTime.parse(json['createdAt'])
          : DateTime.now(),
    );
  }
}

/// 直推成员信息
class DirectReferralInfo {
  final String userId;
  final String accountSequence;  // 账户序列号（新格式: D + YYMMDD + 5位序号），用于显示
  final String referralCode;
  final int personalPlantingCount;  // 个人认种量
  final int teamPlantingCount;      // 团队认种量
  final int directReferralCount;    // 直推人数（用于判断是否有下级）
  final DateTime joinedAt;

  DirectReferralInfo({
    required this.userId,
    required this.accountSequence,
    required this.referralCode,
    required this.personalPlantingCount,
    required this.teamPlantingCount,
    required this.directReferralCount,
    required this.joinedAt,
  });

  factory DirectReferralInfo.fromJson(Map<String, dynamic> json) {
    return DirectReferralInfo(
      userId: json['userId']?.toString() ?? '',
      accountSequence: json['accountSequence']?.toString() ?? '',
      referralCode: json['referralCode'] ?? '',
      personalPlantingCount: json['personalPlantingCount'] ?? 0,
      teamPlantingCount: json['teamPlantingCount'] ?? 0,
      directReferralCount: json['directReferralCount'] ?? 0,
      joinedAt: json['joinedAt'] != null
          ? DateTime.parse(json['joinedAt'])
          : DateTime.now(),
    );
  }
}

/// 直推列表响应
class DirectReferralsResponse {
  final List<DirectReferralInfo> referrals;
  final int total;
  final bool hasMore;

  DirectReferralsResponse({
    required this.referrals,
    required this.total,
    required this.hasMore,
  });

  factory DirectReferralsResponse.fromJson(Map<String, dynamic> json) {
    return DirectReferralsResponse(
      referrals: (json['referrals'] as List? ?? [])
          .map((e) => DirectReferralInfo.fromJson(e))
          .toList(),
      total: json['total'] ?? 0,
      hasMore: json['hasMore'] ?? false,
    );
  }
}