Split Orders Submit Service

rails_application/app/controllers/client/orders_controller.rb

@@ -12,7 +12,7 @@ def new
     end
 
     def create
-      Orders::SubmitService.new(order_id: params[:order_id], customer_id: cookies[:client_id]).call
+      Client::Orders::SubmitService.new(order_id: params[:order_id], customer_id: cookies[:client_id]).call
     rescue Orders::OrderHasUnavailableProducts => e
       unavailable_products = e.unavailable_products.join(", ")
       redirect_to edit_client_order_path(params[:order_id]), alert: "Order can not be submitted! #{unavailable_products} not available in requested quantity!"

rails_application/app/services/client/orders/submit_service.rb

@@ -0,0 +1,44 @@
+module Client
+  module Orders
+    class OrderHasUnavailableProducts < StandardError
+      attr_reader :unavailable_products
+
+      def initialize(unavailable_products)
+        @unavailable_products = unavailable_products
+      end
+    end
+
+    class SubmitService < ApplicationService
+      def initialize(order_id:, customer_id:)
+        @order_id = order_id
+        @customer_id = customer_id
+      end
+
+      def call
+        unavailable_products = []
+        event_store
+          .within { submit_order }
+          .subscribe(to: Processes::ReservationProcessFailed) do |event|
+            unavailable_products = Products::Product.where(id: event.data.fetch(:unavailable_products)).pluck(:name)
+          end
+          .call
+
+          if unavailable_products.any?
+            raise OrderHasUnavailableProducts.new(unavailable_products)
+          end
+        true
+      end
+
+      private
+
+      attr_reader :order_id, :customer_id
+
+      def submit_order
+        ActiveRecord::Base.transaction do
+          command_bus.(Ordering::SubmitOrder.new(order_id: order_id))
+          command_bus.(Crm::AssignCustomerToOrder.new(order_id: order_id, customer_id: customer_id))
+        end
+      end
+    end
+  end
+end

rails_application/test/services/client/orders/submit_service_test.rb

@@ -0,0 +1,63 @@
+require "test_helper"
+
+module Client
+  module Orders
+    class SubmitServiceTest < InMemoryTestCase
+      cover Client::Orders::SubmitService
+
+      def test_successful_order_submission
+        order_id = SecureRandom.uuid
+        customer_id = SecureRandom.uuid
+        product_id = SecureRandom.uuid
+
+        run_command(Crm::RegisterCustomer.new(customer_id: customer_id, name: "John Doe"))
+        prepare_product(product_id, "Async Remote", 49)
+        run_command(Ordering::AddItemToBasket.new(order_id: order_id, product_id: product_id))
+
+        assert_equal true, SubmitService.new(order_id: order_id, customer_id: customer_id).call
+      end
+
+      def test_order_submission_with_unavailable_products
+        order_id = SecureRandom.uuid
+        customer_id = SecureRandom.uuid
+        product_id = SecureRandom.uuid
+        another_product_id = SecureRandom.uuid
+
+        run_command(Crm::RegisterCustomer.new(customer_id: customer_id, name: "John Doe"))
+        prepare_product(product_id, "Async Remote", 49)
+        run_command(Inventory::Supply.new(product_id: product_id, quantity: 1))
+        run_command(Inventory::Reserve.new(product_id: product_id, quantity: 1))
+        run_command(Ordering::AddItemToBasket.new(order_id: order_id, product_id: product_id))
+        prepare_product(another_product_id, "Fearless Refactoring", 49)
+        run_command(Ordering::AddItemToBasket.new(order_id: order_id, product_id: another_product_id))
+
+        error = assert_raises(OrderHasUnavailableProducts) do
+          SubmitService.new(order_id: order_id, customer_id: customer_id).call
+        end
+
+        assert_equal ["Async Remote"], error.unavailable_products
+      end
+
+      private
+
+      def event_store
+        Rails.configuration.event_store
+      end
+
+      def prepare_product(product_id, name, price)
+        run_command(
+          ProductCatalog::RegisterProduct.new(
+            product_id: product_id,
+          )
+        )
+        run_command(
+          ProductCatalog::NameProduct.new(
+            product_id: product_id,
+            name: name
+          )
+        )
+        run_command(Pricing::SetPrice.new(product_id: product_id, price: price))
+      end
+    end
+  end
+end