refactor

pkg/inventory/adapter.go

@@ -0,0 +1,42 @@
+package inventory
+
+import (
+	"context"
+
+	platforminv "git.k6n.net/mats/platform/inventory"
+)
+
+// ReservationPolicyAdapter wraps a RedisCartReservationService to satisfy the
+// platform/inventory.ReservationPolicy interface. It translates between the
+// platform's value types (SKU, LocationID, CartID) and the Redis-level types
+// used internally by go-redis-inventory.
+type ReservationPolicyAdapter struct {
+	inner *RedisCartReservationService
+}
+
+// NewReservationPolicyAdapter creates an adapter that satisfies
+// platform/inventory.ReservationPolicy by delegating to the Redis-backed
+// reservation service.
+func NewReservationPolicyAdapter(inner *RedisCartReservationService) *ReservationPolicyAdapter {
+	return &ReservationPolicyAdapter{inner: inner}
+}
+
+func (a *ReservationPolicyAdapter) Reserve(ctx context.Context, req platforminv.CartReserveRequest) error {
+	return a.inner.ReserveForCart(ctx, CartReserveRequest{
+		InventoryReference: &InventoryReference{
+			SKU:        SKU(req.SKU),
+			LocationID: LocationID(req.LocationID),
+		},
+		CartID:   CartID(req.CartID),
+		Quantity: req.Quantity,
+		TTL:      req.TTL,
+	})
+}
+
+func (a *ReservationPolicyAdapter) Release(ctx context.Context, sku platforminv.SKU, locationID platforminv.LocationID, cartID platforminv.CartID) error {
+	return a.inner.ReleaseForCart(ctx, SKU(sku), LocationID(locationID), CartID(cartID))
+}
+
+func (a *ReservationPolicyAdapter) Available(ctx context.Context, sku platforminv.SKU, locationID platforminv.LocationID) (int64, error) {
+	return a.inner.GetAvailableInventory(ctx, SKU(sku), LocationID(locationID))
+}

pkg/inventory/types.go

@@ -52,14 +52,10 @@ type CartReserveRequest struct {
 	TTL      time.Duration
 }
 
-type CartReservationService interface {
-	ReserveForCart(ctx context.Context, req CartReserveRequest) error
-	ReleaseForCart(ctx context.Context, sku SKU, locationID LocationID, cartID CartID) error
-	GetAvailableInventory(ctx context.Context, sku SKU, locationID LocationID) (int64, error)
-	GetReservationExpiry(ctx context.Context, sku SKU, locationID LocationID, cartID CartID) (time.Time, error)
-	GetReservationStatus(ctx context.Context, sku SKU, locationID LocationID, cartID CartID) (*ReservationStatus, error)
-	GetReservationSummary(ctx context.Context, sku SKU, locationID LocationID) (*ReservationSummary, error)
-}
+// CartReservationService interface was removed in favor of
+// platform/inventory.ReservationPolicy. Consumers should depend on the
+// platform seam; the concrete *RedisCartReservationService implements its
+// methods directly.
 
 type ReservationStatus struct {
 	Active        bool