/// 令牌响应，对应服务端 `POST /api/auth/login` 与 `POST /api/auth/refresh`。
///
/// 与 Android 端 `network/model/TokenResponse` 字段保持一致。
class TokenResponse {
  final String accessToken;
  final String? refreshToken;
  final String? tokenType;

  /// accessToken 有效期（秒）。
  final int expiresIn;

  const TokenResponse({
    required this.accessToken,
    this.refreshToken,
    this.tokenType,
    this.expiresIn = 0,
  });

  factory TokenResponse.fromJson(Map<String, dynamic> json) => TokenResponse(
        accessToken: (json['accessToken'] ?? '') as String,
        refreshToken: json['refreshToken'] as String?,
        tokenType: json['tokenType'] as String?,
        expiresIn: (json['expiresIn'] as num?)?.toInt() ?? 0,
      );
}