Use proper module/namespace

app/controllers/payment_gateways/stripe_controller.rb

@@ -1,40 +1,42 @@
 # frozen_string_literal: true
 
-class StripeController < BaseController
-  include OrderStockCheck
-  include OrderCompletion
+module PaymentGateways
+  class StripeController < BaseController
+    include OrderStockCheck
+    include OrderCompletion
 
-  before_action :load_checkout_order, only: :confirm
+    before_action :load_checkout_order, only: :confirm
 
-  def confirm
-    return processing_failed unless valid_payment_intent?
+    def confirm
+      return processing_failed unless valid_payment_intent?
 
-    cancel_incomplete_payments && handle_insufficient_stock unless sufficient_stock?
+      cancel_incomplete_payments && handle_insufficient_stock unless sufficient_stock?
 
-    process_payment_completion!
-  end
-
-  private
-
-  def valid_payment_intent?
-    @valid_payment_intent ||= begin
-      return false unless params["payment_intent"]&.starts_with?("pi_")
-
-      last_payment = OrderPaymentFinder.new(@order).last_payment
-
-      @order.state == "payment" &&
-        last_payment&.state == "requires_authorization" &&
-        last_payment&.response_code == params["payment_intent"]
+      process_payment_completion!
     end
-  end
 
-  def cancel_incomplete_payments
-    # The checkout could not complete due to stock running out. We void any pending (incomplete)
-    # Stripe payments here as the order will need to be changed and resubmitted (or abandoned).
-    @order.payments.incomplete.each do |payment|
-      payment.void_transaction!
-      payment.adjustment&.update_columns(eligible: false, state: "finalized")
+    private
+
+    def valid_payment_intent?
+      @valid_payment_intent ||= begin
+        return false unless params["payment_intent"]&.starts_with?("pi_")
+
+        last_payment = OrderPaymentFinder.new(@order).last_payment
+
+        @order.state == "payment" &&
+          last_payment&.state == "requires_authorization" &&
+          last_payment&.response_code == params["payment_intent"]
+      end
+    end
+
+    def cancel_incomplete_payments
+      # The checkout could not complete due to stock running out. We void any pending (incomplete)
+      # Stripe payments here as the order will need to be changed and resubmitted (or abandoned).
+      @order.payments.incomplete.each do |payment|
+        payment.void_transaction!
+        payment.adjustment&.update_columns(eligible: false, state: "finalized")
+      end
+      flash[:notice] = I18n.t("checkout.payment_cancelled_due_to_stock")
     end
-    flash[:notice] = I18n.t("checkout.payment_cancelled_due_to_stock")
   end
 end