/// 认证接口的响应模型（接口契约冻结稿，字段名与后端一致）。
class AuthTokens {
  const AuthTokens({
    required this.userId,
    required this.tokenType,
    required this.accessToken,
    required this.accessTokenExpiresAt,
    required this.refreshToken,
    required this.refreshTokenExpiresAt,
  });

  factory AuthTokens.fromJson(Map<String, dynamic> json) {
    return AuthTokens(
      userId: json['userId'] as String,
      tokenType: json['tokenType'] as String,
      accessToken: json['accessToken'] as String,
      accessTokenExpiresAt: DateTime.parse(
        json['accessTokenExpiresAt'] as String,
      ),
      refreshToken: json['refreshToken'] as String,
      refreshTokenExpiresAt: DateTime.parse(
        json['refreshTokenExpiresAt'] as String,
      ),
    );
  }

  final String userId;
  final String tokenType;
  final String accessToken;
  final DateTime accessTokenExpiresAt;
  final String refreshToken;
  final DateTime refreshTokenExpiresAt;
}

/// `GET /api/v1/me` 的用户资料。
class UserProfile {
  const UserProfile({
    required this.userId,
    required this.username,
    required this.phone,
    required this.createdAt,
  });

  factory UserProfile.fromJson(Map<String, dynamic> json) {
    return UserProfile(
      userId: json['userId'] as String,
      username: json['username'] as String,
      phone: json['phone'] as String,
      createdAt: DateTime.parse(json['createdAt'] as String),
    );
  }

  final String userId;
  final String username;
  final String phone;
  final DateTime createdAt;
}