try to reserve

cmd/cart/pool-server.go

@@ -15,6 +15,7 @@ import (
 	"git.tornberg.me/go-cart-actor/pkg/cart"
 	messages "git.tornberg.me/go-cart-actor/pkg/messages"
 	"git.tornberg.me/go-cart-actor/pkg/voucher"
+	"git.tornberg.me/mats/go-redis-inventory/pkg/inventory"
 	"github.com/gogo/protobuf/proto"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promauto"
@@ -40,15 +41,17 @@ var (
 
 type PoolServer struct {
 	actor.GrainPool[*cart.CartGrain]
-	pod_name     string
-	klarnaClient *KlarnaClient
+	pod_name         string
+	klarnaClient     *KlarnaClient
+	inventoryService inventory.InventoryService
 }
 
-func NewPoolServer(pool actor.GrainPool[*cart.CartGrain], pod_name string, klarnaClient *KlarnaClient) *PoolServer {
+func NewPoolServer(pool actor.GrainPool[*cart.CartGrain], pod_name string, klarnaClient *KlarnaClient, inventoryService inventory.InventoryService) *PoolServer {
 	return &PoolServer{
-		GrainPool:    pool,
-		pod_name:     pod_name,
-		klarnaClient: klarnaClient,
+		GrainPool:        pool,
+		pod_name:         pod_name,
+		klarnaClient:     klarnaClient,
+		inventoryService: inventoryService,
 	}
 }
 
@@ -310,6 +313,25 @@ func getLocale(country string) string {
 	return "sv-se"
 }
 
+func getLocationId(item *cart.CartItem) inventory.LocationID {
+	if item.StoreId == nil || *item.StoreId == "" {
+		return "se"
+	}
+	return inventory.LocationID(*item.StoreId)
+}
+
+func getInventoryRequests(items []*cart.CartItem) []inventory.ReserveRequest {
+	var requests []inventory.ReserveRequest
+	for _, item := range items {
+		requests = append(requests, inventory.ReserveRequest{
+			SKU:        inventory.SKU(item.Sku),
+			LocationID: getLocationId(item),
+			Quantity:   uint32(item.Quantity),
+		})
+	}
+	return requests
+}
+
 func (s *PoolServer) CreateOrUpdateCheckout(ctx context.Context, host string, id cart.CartId) (*CheckoutOrder, error) {
 	country := getCountryFromHost(host)
 	meta := &CheckoutMeta{
@@ -329,6 +351,13 @@ func (s *PoolServer) CreateOrUpdateCheckout(ctx context.Context, host string, id
 		return nil, err
 	}
 
+	inventoryRequests := getInventoryRequests(grain.Items)
+	failingRequest, err := s.inventoryService.ReservationCheck(inventoryRequests...)
+	if err != nil {
+		logger.WarnContext(ctx, "inventory check failed", string(failingRequest.SKU), string(failingRequest.LocationID))
+		return nil, err
+	}
+
 	// Build pure checkout payload
 	payload, _, err := BuildCheckoutOrderPayload(grain, meta)
 	if err != nil {