Move sales data generation to a service object

There will be lots and lots. The sales data root object is also the
authenticated person. The data has its own URL (semantic id) which
doens't need to contain the user id.

The service object can also be tested more easily. I'm setting up the
test data here.

engines/dfc_provider/app/controllers/dfc_provider/affiliate_sales_data_controller.rb

@@ -4,7 +4,8 @@ module DfcProvider
   # Aggregates anonymised sales data for a research project.
   class AffiliateSalesDataController < DfcProvider::ApplicationController
     def show
-      person = PersonBuilder.person(current_user)
+      person = AffiliateSalesDataBuilder.person
+
       render json: DfcIo.export(person)
     end
   end

engines/dfc_provider/app/services/affiliate_sales_data_builder.rb

@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class AffiliateSalesDataBuilder < DfcBuilder
+  class << self
+    def person
+      DataFoodConsortium::Connector::Person.new(
+        urls.affiliate_sales_data_url,
+      )
+    end
+  end
+end

engines/dfc_provider/spec/requests/affiliate_sales_data_spec.rb

@@ -3,7 +3,7 @@
 require_relative "../swagger_helper"
 
 RSpec.describe "AffiliateSalesData", swagger_doc: "dfc.yaml", rswag_autodoc: true do
-  let(:user) { create(:oidc_user, id: 10_000) }
+  let(:user) { create(:oidc_user) }
 
   before { login_as user }
 
@@ -14,7 +14,8 @@ RSpec.describe "AffiliateSalesData", swagger_doc: "dfc.yaml", rswag_autodoc: tru
       response "200", "successful" do
         run_test! do
           expect(json_response).to include(
-            "@id" => "http://test.host/api/dfc/persons/10000",
+            "@id" => "http://test.host/api/dfc/affiliate_sales_data",
+            "@type" => "dfc-b:Person",
           )
         end
       end

engines/dfc_provider/spec/services/affiliate_sales_data_builder_spec.rb

@@ -0,0 +1,54 @@
+# frozen_string_literal: true
+
+require_relative "../spec_helper"
+
+RSpec.describe AffiliateSalesDataBuilder do
+  let(:user) { build(:user) }
+
+  describe ".person" do
+    let(:person) { described_class.person(user) }
+
+    it "returns data as Person" do
+      expect(person).to be_a DataFoodConsortium::Connector::Person
+      expect(person.semanticId).to eq "http://test.host/api/dfc/affiliate_sales_data"
+    end
+
+    it "returns required sales data" do
+      supplier = create(
+        :supplier_enterprise,
+        owner: user,
+        users: [user],
+        address: create(:address, zipcode: "5555"),
+      )
+      product = create(
+        :product,
+        supplier_id: supplier.id,
+        variant_unit: "item",
+      )
+      variant = product.variants.first
+      distributor = create(
+        :distributor_enterprise,
+        address: create(:address, zipcode: "6666"),
+      )
+      line_item = build(
+        :line_item,
+        variant:,
+        quantity: 2,
+        price: 3,
+      )
+      order_cycle = create(
+        :order_cycle,
+        suppliers: [supplier],
+        distributors: [distributor],
+      )
+      order_cycle.exchanges.incoming.first.variants << variant
+      order_cycle.exchanges.outgoing.first.variants << variant
+      create(
+        :order,
+        order_cycle:,
+        distributor:,
+        line_items: [line_item],
+      )
+    end
+  end
+end

swagger/dfc.yaml

@@ -83,9 +83,17 @@ paths:
                 test_example:
                   value:
                     "@context": https://www.datafoodconsortium.org
-                    "@id": http://test.host/api/dfc/persons/10000
+                    "@id": http://test.host/api/dfc/affiliate_sales_data
                     "@type": dfc-b:Person
                     dfc-b:logo: ''
+                    dfc-b:firstName: ''
+                    dfc-b:familyName: ''
+                    dfc-b:affiliates:
+                      "@type": dfc-b:Enterprise
+                      dfc-b:logo: ''
+                      dfc-b:name: ''
+                      dfc-b:hasDescription: ''
+                      dfc-b:VATnumber: ''
   "/api/dfc/enterprises/{enterprise_id}/catalog_items":
     parameters:
     - name: enterprise_id