Add DFC API EnterpriseGroups#show

engines/dfc_provider/app/controllers/dfc_provider/enterprise_groups_controller.rb

@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+# OFN EnterpriseGroup is represented as DFC Enterprise.
+module DfcProvider
+  class EnterpriseGroupsController < DfcProvider::ApplicationController
+    def show
+      group = EnterpriseGroup.find(params[:id])
+      enterprise = EnterpriseBuilder.enterprise_group(group)
+      render json: DfcIo.export(enterprise)
+    end
+  end
+end

engines/dfc_provider/app/services/enterprise_builder.rb

@@ -18,4 +18,12 @@ class EnterpriseBuilder < DfcBuilder
       e.addLocalization(address)
     end
   end
+
+  def self.enterprise_group(group)
+    DataFoodConsortium::Connector::Enterprise.new(
+      urls.enterprise_group_url(group.id),
+      name: group.name,
+      description: group.description,
+    )
+  end
 end

engines/dfc_provider/config/routes.rb

@@ -6,5 +6,6 @@ DfcProvider::Engine.routes.draw do
     resources :catalog_items, only: [:index, :show, :update]
     resources :supplied_products, only: [:create, :show, :update]
   end
+  resources :enterprise_groups, only: [:show]
   resources :persons, only: [:show]
 end

engines/dfc_provider/spec/requests/enterprise_groups_spec.rb

@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+require_relative "../swagger_helper"
+
+describe "EnterpriseGroups", type: :request, swagger_doc: "dfc.yaml", rswag_autodoc: true do
+  let(:user) { create(:oidc_user) }
+  let(:group) { create(:enterprise_group, id: 60_000) }
+
+  before { login_as user }
+
+  path "/api/dfc/enterprise_groups/{id}" do
+    get "Show groups" do
+      parameter name: :id, in: :path, type: :string
+      produces "application/json"
+
+      response "200", "successful" do
+        let(:id) { group.id }
+
+        run_test!
+      end
+    end
+  end
+end

swagger/dfc.yaml

@@ -234,6 +234,31 @@ paths:
                     "@type": "@id"
                 dfc-b:stockLimitation: '3'
                 dfc-b:sku: new-sku
+  "/api/dfc/enterprise_groups/{id}":
+    get:
+      summary: Show groups
+      parameters:
+      - name: id
+        in: path
+        required: true
+        schema:
+          type: string
+      tags:
+      - EnterpriseGroups
+      responses:
+        '200':
+          description: successful
+          content:
+            application/json:
+              examples:
+                test_example:
+                  value:
+                    "@context": https://www.datafoodconsortium.org
+                    "@id": http://test.host/api/dfc/enterprise_groups/60000
+                    "@type": dfc-b:Enterprise
+                    dfc-b:hasName: Enterprise group
+                    dfc-b:hasDescription: this is a group
+                    dfc-b:VATnumber: ''
   "/api/dfc/enterprises/{id}":
     get:
       summary: Show enterprise