Add SuppliedProducts controller

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

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+# Controller used to provide the SuppliedProducts API for the DFC application
+module DfcProvider
+  module Api
+    class SuppliedProductsController < BaseController
+      def show
+        @product = @enterprise.supplied_products.find(params[:id])
+
+        render json: @product, serializer: DfcProvider::SuppliedProductSerializer
+      end
+    end
+  end
+end

engines/dfc_provider/app/serializers/dfc_provider/catalog_item_serializer.rb

@@ -42,6 +42,14 @@ module DfcProvider
 
     private
 
+    def reference_id
+      dfc_provider_routes.api_dfc_provider_enterprise_supplied_product_url(
+        enterprise_id: object.product.supplier_id,
+        id: object.product_id,
+        host: root_url
+      )
+    end
+
     def dfc_provider_routes
       DfcProvider::Engine.routes.url_helpers
     end

engines/dfc_provider/app/serializers/dfc_provider/supplied_product_serializer.rb

@@ -17,7 +17,11 @@ module DfcProvider
     has_many :physical_characteristics, key: 'dfc:physicalCharacterisctics'
 
     def id
-      "/supplied_products/#{object.id}"
+      dfc_provider_routes.api_dfc_provider_enterprise_supplied_product_url(
+        enterprise_id: object.supplier_id,
+        id: object.id,
+        host: root_url
+      )
     end
 
     def type
@@ -60,5 +64,9 @@ module DfcProvider
     def unit_name
       object.unit_description.presence || 'piece'
     end
+
+    def dfc_provider_routes
+      DfcProvider::Engine.routes.url_helpers
+    end
   end
 end

engines/dfc_provider/config/routes.rb

@@ -5,6 +5,7 @@ DfcProvider::Engine.routes.draw do
     scope :dfc_provider, as: :dfc_provider, path: '/dfc_provider' do
       resources :enterprises, only: [:show] do
         resources :catalog_items, only: [:index, :show]
+        resources :supplied_products, only: [:show]
       end
     end
   end

engines/dfc_provider/spec/controllers/dfc_provider/api/supplied_products_controller_spec.rb

@@ -0,0 +1,54 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe DfcProvider::Api::SuppliedProductsController, type: :controller do
+  render_views
+
+  let!(:user) { create(:user) }
+  let!(:enterprise) { create(:distributor_enterprise, owner: user) }
+  let!(:product) { create(:simple_product, supplier: enterprise ) }
+
+  describe('.show') do
+    context 'with authorization token' do
+      before do
+        request.headers['Authorization'] = 'Bearer 123456.abcdef.123456'
+      end
+
+      context 'with an authenticated user' do
+        before do
+          allow_any_instance_of(DfcProvider::AuthorizationControl)
+            .to receive(:process)
+            .and_return(user)
+        end
+
+        context 'with an enterprise' do
+          context 'given with an id' do
+            before do
+              api_get :show,
+                      enterprise_id: 'default',
+                      id: product.id
+            end
+
+            it 'is successful' do
+              expect(response.status).to eq 200
+            end
+
+            it 'renders the required content' do
+              expect(response.body)
+                .to include(product.name)
+            end
+          end
+
+          context 'given with a wrong id' do
+            before { api_get :show, id: 999 }
+
+            it 'returns 404' do
+              expect(response.status).to eq 404
+            end
+          end
+        end
+      end
+    end
+  end
+end