package cart import ( "fmt" messages "git.k6n.net/go-cart-actor/pkg/messages" ) func RemoveGiftcard(grain *CartGrain, req *messages.RemoveGiftcard) error { for i, item := range grain.Giftcards { if item.Id == req.Id { grain.Giftcards = append(grain.Giftcards[:i], grain.Giftcards[i+1:]...) grain.UpdateTotals() return nil } } return fmt.Errorf("giftcard with ID %d not found", req.Id) }