/// 令牌校验响应，对应服务端 `GET /api/client/verify`。
///
/// 与 Android 端 `network/model/VerifyResponse` 字段保持一致。
class VerifyResponse {
  final bool valid;

  /// USER / DEVICE。
  final String? principalType;
  final String? principalId;
  final String? displayName;

  /// 过期时间（秒级时间戳）。
  final int expiresAt;

  /// 剩余有效秒数。
  final int remainingSeconds;

  final String? message;

  const VerifyResponse({
    required this.valid,
    this.principalType,
    this.principalId,
    this.displayName,
    this.expiresAt = 0,
    this.remainingSeconds = 0,
    this.message,
  });

  factory VerifyResponse.fromJson(Map<String, dynamic> json) => VerifyResponse(
        valid: json['valid'] == true,
        principalType: json['principalType'] as String?,
        principalId: json['principalId'] as String?,
        displayName: json['displayName'] as String?,
        expiresAt: (json['expiresAt'] as num?)?.toInt() ?? 0,
        remainingSeconds: (json['remainingSeconds'] as num?)?.toInt() ?? 0,
        message: json['message'] as String?,
      );
}