update

pkg/promotions/eval.go

@@ -26,7 +26,7 @@ func (NoopTracer) Trace(string, map[string]any) {}
 // for the purpose of promotion condition evaluation.
 type PromotionItem struct {
 	SKU         string
-	Quantity    int
+	Quantity    uint16
 	Category    string
 	PriceIncVat int64
 }
@@ -36,7 +36,7 @@ type PromotionItem struct {
 // customer/order metadata.
 type PromotionEvalContext struct {
 	CartTotalIncVat       int64
-	TotalItemQuantity     int
+	TotalItemQuantity     uint32
 	Items                 []PromotionItem
 	CustomerSegment       string
 	CustomerLifetimeValue float64
@@ -89,7 +89,7 @@ func NewContextFromCart(g *cart.CartGrain, opts ...ContextOption) *PromotionEval
 			Category:    strings.ToLower(category),
 			PriceIncVat: it.Price.IncVat,
 		})
-		ctx.TotalItemQuantity += it.Quantity
+		ctx.TotalItemQuantity += uint32(it.Quantity)
 	}
 	for _, o := range opts {
 		o(ctx)