Encapsulate DFC-OFN data model bridge

Re-uses existing code and takes knowledge out of the controller.

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

@@ -34,13 +34,10 @@ module DfcProvider
 
       return head :bad_request unless supplied_product
 
-      variant.product.update!(
-        description: supplied_product.description,
-      )
+      SuppliedProductBuilder.apply(supplied_product, variant)
 
-      variant.update!(
-        unit_value: supplied_product.quantity.value,
-      )
+      variant.product.save!
+      variant.save!
     end
 
     private

engines/dfc_provider/app/services/supplied_product_builder.rb

@@ -26,4 +26,14 @@ class SuppliedProductBuilder < DfcBuilder
       QuantitativeValueBuilder.apply(supplied_product.quantity, product)
     end
   end
+
+  def self.apply(supplied_product, variant)
+    variant.product.assign_attributes(
+      name: supplied_product.name,
+      description: supplied_product.description,
+    )
+
+    QuantitativeValueBuilder.apply(supplied_product.quantity, variant.product)
+    variant.unit_value = variant.product.unit_value
+  end
 end

engines/dfc_provider/spec/requests/supplied_products_spec.rb

@@ -148,6 +148,7 @@ describe "SuppliedProducts", type: :request, swagger_doc: "dfc-v1.7/swagger.yaml
             submit_request(example.metadata)
             variant.reload
           }.to change { variant.description }.to("DFC-Pesto updated")
+            .and change { variant.name }.to("Pesto novo")
             .and change { variant.unit_value }.to(17)
         end
       end