all the refactor

cmd/checkout/adyen-handlers.go

@@ -12,7 +12,6 @@ import (
 
 	"git.k6n.net/mats/go-cart-actor/pkg/cart"
 	messages "git.k6n.net/mats/go-cart-actor/proto/checkout"
-	"git.k6n.net/mats/go-redis-inventory/pkg/inventory"
 	adyenCheckout "github.com/adyen/adyen-go-api-library/v21/src/checkout"
 	"github.com/adyen/adyen-go-api-library/v21/src/common"
 	"github.com/adyen/adyen-go-api-library/v21/src/hmacvalidator"
@@ -232,27 +231,9 @@ func (s *CheckoutPoolServer) createAdyenOrder(ctx context.Context, checkoutId ca
 		return
 	}
 
-	if s.inventoryService != nil && grain.CartState != nil && !grain.InventoryReserved {
-		if rerr := s.inventoryService.ReserveInventory(ctx, getInventoryRequests(grain.CartState.Items)...); rerr != nil {
-			log.Printf("from-checkout: inventory reservation failed for %s: %v", checkoutId.String(), rerr)
-		} else {
-			// Commit step: release cart reservation since we permanently decremented stock
-			if s.reservationService != nil {
-				for _, item := range grain.CartState.Items {
-					if item == nil || !shouldTrackInventory(item) {
-						continue
-					}
-					if err := s.reservationService.ReleaseForCart(ctx, inventory.SKU(item.Sku), getLocationId(item), inventory.CartID(grain.CartId.String())); err != nil {
-						log.Printf("from-checkout: failed to release cart reservation for %s: %v", item.Sku, err)
-					}
-				}
-			}
-			s.Apply(ctx, uint64(grain.Id), &messages.InventoryReserved{
-				Id:     grain.Id.String(),
-				Status: "success",
-			})
-		}
-	}
+	// Inventory is NOT committed here — see the note in KlarnaPushHandler. The
+	// order saga emits order.created and the inventory service reacts
+	// (commit + release + level crossing), idempotently and off the revenue path.
 
 	country := getCountryFromCurrency(item.Amount.Currency)
 	if _, oerr := createOrderFromSettledCheckout(ctx, s, grain, settledPayment{