added custom api error resolver

app/src/main/java/com/biganto/visual/roompark/data/repository/api/retrofit/di/RetrofitModule.kt

@@ -3,10 +3,7 @@ package com.biganto.visual.roompark.data.repository.api.retrofit.di
 import android.content.Context
 import com.biganto.visual.roompark.data.repository.api.retrofit.IRoomParkMobileApi
 import com.biganto.visual.roompark.data.repository.api.retrofit.raw.ErrorRaw
-import com.biganto.visual.roompark.data.repository.api.retrofit.util.DateSerializer
-import com.biganto.visual.roompark.data.repository.api.retrofit.util.ErrorsListDeserializer
-import com.biganto.visual.roompark.data.repository.api.retrofit.util.NullOnEmptyConverterFactory
-import com.biganto.visual.roompark.data.repository.api.retrofit.util.VersionValidationInterceptor
+import com.biganto.visual.roompark.data.repository.api.retrofit.util.*
 import com.biganto.visual.roompark.data.service.network.INetworkMonitor
 import com.biganto.visual.roompark.data.service.network.LiveNetworkMonitor
 import com.biganto.visual.roompark.data.service.network.NoNetworkException
@@ -46,6 +43,7 @@ class RetrofitModule{
 
     private fun gsonConverterFactory() = GsonConverterFactory.create(
         GsonBuilder()
+            .registerTypeHierarchyAdapter(Any::class.java,CustomExceptionDeserializer<Any>())
             .registerTypeAdapter(genericType<MutableList<ErrorRaw>>(), ErrorsListDeserializer())
             .registerTypeAdapter(Date::class.java, DateSerializer())
             .setLenient()

app/src/main/java/com/biganto/visual/roompark/data/repository/api/retrofit/util/CustomExceptionDeserializer.kt

+package com.biganto.visual.roompark.data.repository.api.retrofit.util
+
+import com.biganto.visual.roompark.data.repository.api.retrofit.raw.ErrorRaw
+import com.biganto.visual.roompark.domain.custom_exception.parseException
+import com.google.gson.Gson
+import com.google.gson.JsonDeserializationContext
+import com.google.gson.JsonDeserializer
+import com.google.gson.JsonElement
+import org.json.JSONArray
+import org.json.JSONObject
+import timber.log.Timber
+import java.lang.reflect.Type
+
+/**
+ * Created by Vladislav Bogdashkin on 12.11.2019.
+ */
+
+
+class CustomExceptionDeserializer<T> : JsonDeserializer<T> {
+    override fun deserialize(json: JsonElement, typeOfT: Type, ctx: JsonDeserializationContext): T {
+        val vals = ArrayList<ErrorRaw>()
+
+
+        //region valid case
+        when(json){
+            is JSONObject -> if (!json.asJsonObject.keySet().contains("errors"))
+                return Gson().newBuilder().create().fromJson(json,typeOfT)
+            is JSONArray -> return Gson().newBuilder().create().fromJson(json,typeOfT)
+        }
+        //endregion valid case
+
+        //region parse errorList
+        val errorList = json.asJsonObject.get("errors")
+
+        Timber.w("api errorlist: $errorList")
+
+        when(json) {
+            is JSONArray -> errorList.asJsonArray.forEach{
+                vals.add(ctx.deserialize<T>(it, ErrorRaw::class.java) as ErrorRaw)
+            }
+            is JSONObject -> json.asJsonObject.get("errors").asJsonArray.forEach {
+                vals.add(ctx.deserialize<T>(it, ErrorRaw::class.java) as ErrorRaw)
+            }
+            else -> throw RuntimeException("Unexpected JSON type: " + json.javaClass)
+        }
+        if (vals.size==0)
+            error("unhandled api result : $json")
+
+        throw parseException(vals.first()) //-> for now throws only first!
+        //endregion
+    }
+}
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