Updated on 2026-08-14

core/datasource/src/main/java/com/tangem/datasource/api/common/response/ApiResponseError.kt

@@ -18,6 +18,54 @@ sealed class ApiResponseError : Exception() {
         val errorBody: String?,
     ) : ApiResponseError() {
 
+        fun isServerError(): Boolean = when (code) {
+            Code.OK,
+            Code.CREATED,
+            Code.ACCEPTED,
+            Code.NOT_MODIFIED,
+            Code.BAD_REQUEST,
+            Code.UNAUTHORIZED,
+            Code.PAYMENT_REQUIRED,
+            Code.FORBIDDEN,
+            Code.NOT_FOUND,
+            Code.METHOD_NOT_ALLOWED,
+            Code.NOT_ACCEPTABLE,
+            Code.PROXY_AUTHENTICATION_REQUIRED,
+            Code.REQUEST_TIMEOUT,
+            Code.CONFLICT,
+            Code.GONE,
+            Code.LENGTH_REQUIRED,
+            Code.PRECONDITION_FAILED,
+            Code.PAYLOAD_TOO_LARGE,
+            Code.URI_TOO_LONG,
+            Code.UNSUPPORTED_MEDIA_TYPE,
+            Code.RANGE_NOT_SATISFIABLE,
+            Code.EXPECTATION_FAILED,
+            Code.IM_A_TEAPOT,
+            Code.UNPROCESSABLE_ENTITY,
+            Code.LOCKED,
+            Code.FAILED_DEPENDENCY,
+            Code.TOO_EARLY,
+            Code.UPGRADE_REQUIRED,
+            Code.PRECONDITION_REQUIRED,
+            Code.TOO_MANY_REQUESTS,
+            Code.REQUEST_HEADER_FIELDS_TOO_LARGE,
+            Code.UNAVAILABLE_FOR_LEGAL_REASONS,
+            -> false
+            Code.INTERNAL_SERVER_ERROR,
+            Code.NOT_IMPLEMENTED,
+            Code.BAD_GATEWAY,
+            Code.SERVICE_UNAVAILABLE,
+            Code.GATEWAY_TIMEOUT,
+            Code.HTTP_VERSION_NOT_SUPPORTED,
+            Code.VARIANT_ALSO_NEGOTIATES,
+            Code.INSUFFICIENT_STORAGE,
+            Code.LOOP_DETECTED,
+            Code.NOT_EXTENDED,
+            Code.NETWORK_AUTHENTICATION_REQUIRED,
+            -> true
+        }
+
         // TODO: extract Code from HttpException
         // region Error Codes
         enum class Code(val numericCode: Int) {

data/visa/src/main/kotlin/com/tangem/data/pay/repository/TangemPayRequestPerformer.kt

@@ -159,10 +159,11 @@ internal class TangemPayRequestPerformer @Inject constructor(
                 refreshToken = response.refreshToken,
                 refreshExpiresAt = response.refreshExpiresAt,
             )
+        }.mapLeft { error ->
+            Timber.tag(TAG).e("Can not refresh auth tokens: $error")
+            if (error is VisaApiError.ServerUnavailable) error else VisaApiError.RefreshTokenExpired
         }.onRight { tokens ->
             tangemPayStorage.storeAuthTokens(customerWalletAddress = customerWalletAddress, tokens = tokens)
-        }.onLeft {
-            Timber.tag(TAG).e("Can not refresh auth tokens: $it")
         }
     }
 }

data/visa/src/main/kotlin/com/tangem/data/pay/util/TangemPayErrorConverter.kt

@@ -18,6 +18,7 @@ internal class TangemPayErrorConverter @Inject constructor(
 
     override fun convert(value: Throwable): VisaApiError {
         return if (value is ApiResponseError.HttpException) {
+            if (value.isServerError()) return VisaApiError.ServerUnavailable
             if (value.code == ApiResponseError.HttpException.Code.NOT_FOUND) return VisaApiError.NotPaeraCustomer
             if (value.code == ApiResponseError.HttpException.Code.UNAUTHORIZED) return VisaApiError.RefreshTokenExpired
 

domain/visa/models/src/main/kotlin/com/tangem/domain/visa/error/VisaError.kt

@@ -65,6 +65,7 @@ sealed class VisaApiError(
     data object WithdrawalDataError : VisaApiError(104004003)
     data object SignWithdrawError : VisaApiError(104004004)
     data object WithdrawError : VisaApiError(104004005)
+    data object ServerUnavailable : VisaApiError(104004006)
 
     companion object {
         fun fromBackendError(backendErrorCode: Int): VisaApiError {