Updated on 2026-08-14

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

@@ -5,6 +5,7 @@ import okio.Timeout
 import retrofit2.Call
 import retrofit2.Callback
 import retrofit2.Response
+import timber.log.Timber
 
 internal class ApiResponseCallDelegate<T : Any>(
     private val wrappedCall: Call<T>,
@@ -20,7 +21,9 @@ internal class ApiResponseCallDelegate<T : Any>(
     override fun timeout(): Timeout = wrappedCall.timeout()
     override fun isExecuted(): Boolean = wrappedCall.isExecuted
     override fun isCanceled(): Boolean = wrappedCall.isCanceled
-    override fun cancel() { wrappedCall.cancel() }
+    override fun cancel() {
+        wrappedCall.cancel()
+    }
 
     private inner class ApiResponseCallback(
         private val responseCallback: Callback<ApiResponse<T>>,
@@ -33,7 +36,15 @@ internal class ApiResponseCallDelegate<T : Any>(
         }
 
         override fun onFailure(call: Call<T>, t: Throwable) {
-            val error = t.toApiError()
+            val error = try {
+                t.toApiError()
+            } catch (e: ApiResponseError) {
+                Timber.e(e, "error map toApiError")
+                e
+            } catch (e: Exception) {
+                Timber.e(e, "onFailure UnknownException")
+                ApiResponseError.UnknownException(e)
+            }
             val safeResponse = apiError<T>(error)
 
             responseCallback.onResponse(this@ApiResponseCallDelegate, Response.success(safeResponse))

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

@@ -73,10 +73,16 @@ sealed class ApiResponseError : Exception() {
     }
 
     /** Represents a network error, typically when there's no connectivity. */
-    data object NetworkException : ApiResponseError()
+    @Suppress("UnusedPrivateMember")
+    data object NetworkException : ApiResponseError() {
+        private fun readResolve(): Any = NetworkException
+    }
 
     /** Represents a timeout error, typically when the server takes too long to respond. */
-    data object TimeoutException : ApiResponseError()
+    @Suppress("UnusedPrivateMember")
+    data object TimeoutException : ApiResponseError() {
+        private fun readResolve(): Any = TimeoutException
+    }
 
     /**
      * Represents an unexpected exception that doesn't fall into one of the other categories.

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

@@ -2,6 +2,7 @@ package com.tangem.datasource.api.common.response
 
 import kotlinx.coroutines.TimeoutCancellationException
 import retrofit2.Response
+import timber.log.Timber
 import java.net.ConnectException
 import java.net.SocketTimeoutException
 import java.net.UnknownHostException
@@ -16,10 +17,15 @@ internal fun <T : Any> Response<T>.toSafeApiResponse(): ApiResponse<T> {
     } else {
         val code = ApiResponseError.HttpException.Code.values
             .firstOrNull { it.code == code() }
-        val e = if (code == null) {
+        val e = try {
-            ApiResponseError.UnknownException(IllegalArgumentException("Unknown error status code: ${code()}"))
+            if (code == null) {
-        } else {
+                ApiResponseError.UnknownException(IllegalArgumentException("Unknown error status code: ${code()}"))
-            ApiResponseError.HttpException(code, message(), errorBody()?.string())
+            } else {
+                ApiResponseError.HttpException(code, message(), errorBody()?.string())
+            }
+        } catch (e: Exception) {
+            Timber.e(e, "UnknownException occured")
+            ApiResponseError.UnknownException(e)
         }
 
         apiError(e)