MBL-1251 get create attribution event graphqltransformer (#1969)

MBL-1251 Add a new getCreateAttributionEvent GraphQLTransformer

app/src/main/java/com/kickstarter/services/transformers/GraphQLTransformers.kt

@@ -1,7 +1,10 @@
 package com.kickstarter.services.transformers
 
+import CreateAttributionEventMutation
 import TriggerThirdPartyEventMutation
+import UserPrivacyQuery
 import com.google.android.gms.common.util.Base64Utils
+import com.google.gson.Gson
 import com.kickstarter.libs.Permission
 import com.kickstarter.libs.utils.extensions.negate
 import com.kickstarter.mock.factories.RewardFactory
@@ -28,13 +31,15 @@ import com.kickstarter.models.UserPrivacy
 import com.kickstarter.models.Video
 import com.kickstarter.models.Web
 import com.kickstarter.services.apiresponses.ShippingRulesEnvelope
+import com.kickstarter.services.mutations.CreateAttributionEventData
 import com.kickstarter.viewmodels.usecases.TPEventInputData
 import fragment.FullProject
 import fragment.ProjectCard
 import org.jetbrains.annotations.Nullable
 import org.joda.time.DateTime
 import type.AppDataInput
 import type.CollaboratorPermission
+import type.CreateAttributionEventInput
 import type.CreditCardPaymentType
 import type.CurrencyCode
 import type.RewardType
@@ -854,3 +859,24 @@ fun getTriggerThirdPartyEventMutation(eventInput: TPEventInputData): TriggerThir
     return TriggerThirdPartyEventMutation.builder().triggerThirdPartyEventInput(graphInput)
         .build()
 }
+
+/**
+ * From KS dataModel CreateAttributionEventData, transform it into
+ * GraphQL defined mutation CreateAttributionEventMutation
+ */
+fun getCreateAttributionEventMutation(eventInput: CreateAttributionEventData, gson: Gson): CreateAttributionEventMutation {
+
+    // Use gson to convert map -> JSON type to match mutation
+    val eventPropertiesJson = gson.toJson(eventInput.eventProperties)
+
+    val graphInput =
+        CreateAttributionEventInput.builder()
+            .eventName(eventInput.eventName)
+            .eventProperties(eventPropertiesJson)
+            .projectId(eventInput.projectId)
+            .clientMutationId(eventInput.clientMutationId)
+            .build()
+
+    return CreateAttributionEventMutation.builder().input(graphInput)
+        .build()
+}