better

cmd/cart/mutation_set_pickup_point.go

@@ -28,29 +28,24 @@ import (
 //   - Validate pickup point fields (country code, zip format, etc.)
 //   - Track history / audit of pickup point changes
 //   - Trigger delivery price adjustments (which would then require WithTotals()).
-func init() {
-	RegisterMutation[messages.SetPickupPoint](
-		"SetPickupPoint",
-		func(g *CartGrain, m *messages.SetPickupPoint) error {
-			if m == nil {
-				return fmt.Errorf("SetPickupPoint: nil payload")
-			}
 
-			for _, d := range g.Deliveries {
-				if d.Id == int(m.DeliveryId) {
-					d.PickupPoint = &messages.PickupPoint{
-						Id:      m.Id,
-						Name:    m.Name,
-						Address: m.Address,
-						City:    m.City,
-						Zip:     m.Zip,
-						Country: m.Country,
-					}
-					return nil
-				}
+func SetPickupPoint(g *CartGrain, m *messages.SetPickupPoint) error {
+	if m == nil {
+		return fmt.Errorf("SetPickupPoint: nil payload")
+	}
+
+	for _, d := range g.Deliveries {
+		if d.Id == int(m.DeliveryId) {
+			d.PickupPoint = &messages.PickupPoint{
+				Id:      m.Id,
+				Name:    m.Name,
+				Address: m.Address,
+				City:    m.City,
+				Zip:     m.Zip,
+				Country: m.Country,
 			}
-			return fmt.Errorf("SetPickupPoint: delivery id %d not found", m.DeliveryId)
-		},
-		// No WithTotals(): pickup point does not change pricing / tax.
-	)
+			return nil
+		}
+	}
+	return fmt.Errorf("SetPickupPoint: delivery id %d not found", m.DeliveryId)
 }