add cancel

cmd/checkout/pool-server.go

@@ -195,6 +195,19 @@ func (s *CheckoutPoolServer) ContactDetailsUpdatedHandler(w http.ResponseWriter,
 	return s.WriteResult(w, result)
 }
 
+func (s *CheckoutPoolServer) CancelPaymentHandler(w http.ResponseWriter, r *http.Request, checkoutId checkout.CheckoutId) error {
+	paymentId := r.PathValue("id")
+	result, err := s.ApplyLocal(r.Context(), checkoutId, &messages.CancelPayment{
+		PaymentId:   paymentId,
+		CancelledAt: timestamppb.New(time.Now()),
+	})
+	if err != nil {
+		return err
+	}
+
+	return s.WriteResult(w, result)
+}
+
 func (s *CheckoutPoolServer) StartCheckoutHandler(w http.ResponseWriter, r *http.Request) {
 	cartIdStr := r.PathValue("cartid")
 	if cartIdStr == "" {
@@ -530,6 +543,7 @@ func (s *CheckoutPoolServer) Serve(mux *http.ServeMux) {
 	handleFunc("POST /api/checkout/contact-details", CookieCheckoutIdHandler(s.ProxyHandler(s.ContactDetailsUpdatedHandler)))
 	handleFunc("POST /payment", CookieCheckoutIdHandler(s.ProxyHandler(s.StartPaymentHandler)))
 	handleFunc("POST /payment/{id}/session", CookieCheckoutIdHandler(s.ProxyHandler(s.GetPaymentSessionHandler)))
+	handleFunc("DELETE /payment/{id}", CookieCheckoutIdHandler(s.ProxyHandler(s.CancelPaymentHandler)))
 	// handleFunc("POST /api/checkout/initialize", CookieCheckoutIdHandler(s.ProxyHandler(s.InitializeCheckoutHandler)))
 	// handleFunc("POST /api/checkout/inventory-reserved", CookieCheckoutIdHandler(s.ProxyHandler(s.InventoryReservedHandler)))
 	// handleFunc("POST /api/checkout/order-created", CookieCheckoutIdHandler(s.ProxyHandler(s.OrderCreatedHandler)))