Update price and stock through the DFC API

engines/dfc_provider/app/controllers/dfc_provider/application_controller.rb

@@ -59,5 +59,9 @@ module DfcProvider
     def current_ability
       @current_ability ||= Spree::Ability.new(current_user)
     end
+
+    def import
+      DfcIo.import(request.body)
+    end
   end
 end

engines/dfc_provider/app/controllers/dfc_provider/offers_controller.rb

@@ -9,6 +9,16 @@ module DfcProvider
       render json: DfcIo.export(subject)
     end
 
+    def update
+      offer = import
+
+      return head :bad_request unless offer
+
+      OfferBuilder.apply(offer, variant)
+
+      variant.save!
+    end
+
     private
 
     def variant

engines/dfc_provider/app/controllers/dfc_provider/supplied_products_controller.rb

@@ -48,10 +48,6 @@ module DfcProvider
 
     private
 
-    def import
-      DfcIo.import(request.body)
-    end
-
     def variant
       @variant ||= current_enterprise.supplied_variants.find(params[:id])
     end

engines/dfc_provider/app/services/offer_builder.rb

@@ -0,0 +1,8 @@
+# frozen_string_literal: true
+
+class OfferBuilder < DfcBuilder
+  def self.apply(offer, variant)
+    variant.on_hand = offer.stockLimitation
+    variant.price = offer.price
+  end
+end

engines/dfc_provider/config/routes.rb

@@ -4,7 +4,7 @@ DfcProvider::Engine.routes.draw do
   resources :addresses, only: [:show]
   resources :enterprises, only: [:show] do
     resources :catalog_items, only: [:index, :show, :update]
-    resources :offers, only: [:show]
+    resources :offers, only: [:show, :update]
     resources :supplied_products, only: [:create, :show, :update]
     resources :social_medias, only: [:show]
   end

engines/dfc_provider/spec/requests/offers_spec.rb

@@ -32,5 +32,34 @@ describe "Offers", type: :request, swagger_doc: "dfc.yaml", rswag_autodoc: true
         run_test!
       end
     end
+
+    put "Update Offer" do
+      consumes "application/json"
+
+      parameter name: :offer, in: :body, schema: {
+        example: {
+          '@context': "https://www.datafoodconsortium.org",
+          '@id': "http://test.host/api/dfc/enterprises/10000/offers/10001",
+          '@type': "dfc-b:Offer",
+          'dfc-b:hasPrice': 9.99,
+          'dfc-b:stockLimitation': 7
+        }
+      }
+
+      let(:id) { variant.id }
+      let(:offer) { |example|
+        example.metadata[:operation][:parameters].first[:schema][:example]
+      }
+
+      response "204", "success" do
+        it "updates a variant" do |example|
+          expect {
+            submit_request(example.metadata)
+            variant.reload
+          }.to change { variant.price }.to(9.99)
+            .and change { variant.on_hand }.to(7)
+        end
+      end
+    end
   end
 end

swagger/dfc.yaml

@@ -438,6 +438,24 @@ paths:
                     "@type": dfc-b:Offer
                     dfc-b:hasPrice: 19.99
                     dfc-b:stockLimitation: 5
+    put:
+      summary: Update Offer
+      parameters: []
+      tags:
+      - Offers
+      responses:
+        '204':
+          description: success
+      requestBody:
+        content:
+          application/json:
+            schema:
+              example:
+                "@context": https://www.datafoodconsortium.org
+                "@id": http://test.host/api/dfc/enterprises/10000/offers/10001
+                "@type": dfc-b:Offer
+                dfc-b:hasPrice: 9.99
+                dfc-b:stockLimitation: 7
   "/api/dfc/persons/{id}":
     get:
       summary: Show person