add mutations to questions and reviews

app/graphql/types/mutation_type.rb

@@ -1,10 +1,9 @@
 module Types
   class MutationType < Types::BaseObject
-    # TODO: remove me
-    field :test_field, String, null: false,
-      description: "An example field added by the generator"
-    def test_field
-      "Hello World"
-    end
+    field :create_question, mutation: Mutations::CreateQuestion
+    field :update_question, mutation: Mutations::UpdateQuestion
+    field :destroy_question, mutation: Mutations::DestroyQuestion
+    field :finish_question, mutation: Mutations::FinishQuestion
+    field :create_review_message, mutation: Mutations::CreateReviewMessage
   end
 end

app/graphql/types/review_message_type.rb

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+module Types
+  class ReviewMessageType < Types::BaseObject
+    graphql_name "ReviewMessage"
+
+    field :id, ID, null: false
+    field :user, UserType, null: false
+    field :question, QuestionType, null: false
+    field :text, String, null: false
+    field :feedback_type, Enums::ReviewMessageFeedbackTypeEnum, null: false
+    field :created_at, GraphQL::Types::ISO8601DateTime, null: false
+    field :updated_at, GraphQL::Types::ISO8601DateTime, null: false
+  end
+end

app/graphql/types/review_request_type.rb

@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+module Types
+  class ReviewRequestType < Types::BaseObject
+    graphql_name "ReviewRequest"
+
+    field :id, ID, null: false
+    field :answered, Boolean, null: false
+
+    field :question, Types::QuestionType, null: false
+    def question
+      dataloader.with(Sources::ActiveRecord, Question).load(object.question_id)
+    end
+
+    field :user, Types::UserType, null: false
+    def user
+      dataloader.with(Sources::ActiveRecord, User).load(object.user_id)
+    end
+  end
+end