class FamilyMember {
  final String userId;
  final String nickname;
  final String role;
  final String joinedAt;

  const FamilyMember({
    required this.userId,
    required this.nickname,
    this.role = 'member',
    this.joinedAt = '',
  });

  factory FamilyMember.fromJson(Map<String, dynamic> json) {
    return FamilyMember(
      userId: json['userId'] as String? ?? '',
      nickname: json['nickname'] as String? ?? '',
      role: json['role'] as String? ?? 'member',
      joinedAt: json['joinedAt'] as String? ?? '',
    );
  }
}

class Family {
  final String id;
  final String name;
  final String inviteCode;
  final String createdBy;
  final String createdAt;
  final List<FamilyMember> members;

  const Family({
    required this.id,
    required this.name,
    required this.inviteCode,
    this.createdBy = '',
    this.createdAt = '',
    this.members = const [],
  });

  factory Family.fromJson(Map<String, dynamic> json) {
    return Family(
      id: json['id'] as String? ?? '',
      name: json['name'] as String? ?? '',
      inviteCode: json['inviteCode'] as String? ?? '',
      createdBy: json['createdBy'] as String? ?? '',
      createdAt: json['createdAt'] as String? ?? '',
      members: (json['members'] as List<dynamic>?)
              ?.map((m) => FamilyMember.fromJson(m as Map<String, dynamic>))
              .toList() ?? [],
    );
  }
}