refactor

cmd/checkout/utils.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"context"
+	"fmt"
 	"log"
 	"net/http"
 	"strings"
@@ -9,6 +10,7 @@ import (
 
 	"git.k6n.net/mats/go-cart-actor/pkg/cart"
 	"git.k6n.net/mats/go-cart-actor/pkg/checkout"
+	"git.k6n.net/mats/platform/inventory"
 	"go.opentelemetry.io/otel/attribute"
 	"go.opentelemetry.io/otel/metric"
 )
@@ -77,12 +79,23 @@ func getCountryFromHost(host string) string {
 }
 
 func (a *CheckoutPoolServer) reserveInventory(ctx context.Context, grain *checkout.CheckoutGrain) error {
-	if a.inventoryService != nil {
-		inventoryRequests := getInventoryRequests(grain.CartState.Items)
-		_, err := a.inventoryService.ReservationCheck(ctx, inventoryRequests...)
+	if a.reservationPolicy == nil {
+		return nil
+	}
+	for _, item := range grain.CartState.Items {
+		if item == nil || !shouldTrackInventory(item) {
+			continue
+		}
+		loc := inventory.LocationID("se")
+		if item.StoreId != nil && *item.StoreId != "" {
+			loc = inventory.LocationID(*item.StoreId)
+		}
+		avail, err := a.reservationPolicy.Available(ctx, inventory.SKU(item.Sku), loc)
 		if err != nil {
-			logger.WarnContext(ctx, "placeorder inventory check failed")
-			return err
+			return fmt.Errorf("inventory check failed for SKU %s: %w", item.Sku, err)
+		}
+		if int64(item.Quantity) > avail {
+			return fmt.Errorf("insufficient inventory for SKU %s: have %d, need %d", item.Sku, avail, item.Quantity)
 		}
 	}
 	return nil