Add BatchOrderApiResponse class

plugins/woocommerce/src/main/kotlin/org/wordpress/android/fluxc/network/rest/wpcom/wc/order/BatchOrderApiResponse.kt

@@ -0,0 +1,53 @@
+package org.wordpress.android.fluxc.network.rest.wpcom.wc.order
+
+import com.google.gson.JsonDeserializationContext
+import com.google.gson.JsonDeserializer
+import com.google.gson.JsonElement
+import com.google.gson.annotations.SerializedName
+import java.lang.reflect.Type
+
+data class BatchOrderApiResponse(
+    @SerializedName("update") val update: List<OrderResponse>
+) {
+    sealed class OrderResponse {
+        data class Success(
+            val order: OrderDto
+        ) : OrderResponse()
+
+        data class Error(
+            val id: Long,
+            val error: ErrorResponse
+        ) : OrderResponse()
+    }
+
+    data class ErrorResponse(
+        val code: String,
+        val message: String,
+        val data: ErrorData
+    )
+
+    data class ErrorData(
+        val status: Int
+    )
+
+    class OrderResponseDeserializer : JsonDeserializer<OrderResponse> {
+        override fun deserialize(
+            json: JsonElement,
+            typeOfT: Type,
+            context: JsonDeserializationContext
+        ): OrderResponse {
+            val jsonObject = json.asJsonObject
+
+            return if (jsonObject.has("error")) {
+                OrderResponse.Error(
+                    id = jsonObject.get("id").asLong,
+                    error = context.deserialize(jsonObject.get("error"), ErrorResponse::class.java)
+                )
+            } else {
+                OrderResponse.Success(
+                    context.deserialize(jsonObject, OrderDto::class.java)
+                )
+            }
+        }
+    }
+}