Reduce domains list API call

app/controllers/api/v1/registrant/domains_controller.rb

@@ -20,7 +20,7 @@ module Api
 
           domains = current_user_domains
           serialized_domains = domains.limit(limit).offset(offset).map do |item|
-            serializer = Serializers::RegistrantApi::Domain.new(item)
+            serializer = Serializers::RegistrantApi::Domain.new(item, simplify: true)
             serializer.to_json
           end
 
@@ -31,7 +31,7 @@ module Api
           @domain = current_user_domains.find_by(uuid: params[:uuid])
 
           if @domain
-            serializer = Serializers::RegistrantApi::Domain.new(@domain)
+            serializer = Serializers::RegistrantApi::Domain.new(@domain, simplify: false)
             render json: serializer.to_json
           else
             render json: { errors: [{ base: ['Domain not found'] }] }, status: :not_found

lib/serializers/registrant_api/domain.rb

@@ -3,11 +3,27 @@ module Serializers
     class Domain
       attr_reader :domain
 
-      def initialize(domain)
+      def initialize(domain, simplify: false)
         @domain = domain
+        @simplify = simplify
       end
 
       def to_json
+        if simplify
+          return {
+            id: domain.uuid,
+            name: domain.name,
+            registered_at: domain.registered_at,
+            valid_to: domain.valid_to,
+            registrant_verification_asked_at: domain.registrant_verification_asked_at,
+            statuses: domain.statuses,
+            registrar: {
+              name: domain.registrar.name,
+              website: domain.registrar.website
+            }
+          }
+        end
+
         {
           id: domain.uuid,
           name: domain.name,