add reservations to the model

pkg/cart/mutation_add_item.go

@@ -44,6 +44,10 @@ func AddItem(g *CartGrain, m *messages.AddItem) error {
 		if existing.StoreId == nil && m.StoreId != nil {
 			existing.StoreId = m.StoreId
 		}
+		if m.ReservationEndTime != nil {
+			t := m.ReservationEndTime.AsTime()
+			existing.ReservationEndTime = &t
+		}
 		return nil
 	}
 
@@ -57,8 +61,7 @@ func AddItem(g *CartGrain, m *messages.AddItem) error {
 	}
 
 	pricePerItem := NewPriceFromIncVat(m.Price, taxRate)
-
-	g.Items = append(g.Items, &CartItem{
+	cartItem := &CartItem{
 		Id:       g.lastItemId,
 		ItemId:   uint32(m.ItemId),
 		Quantity: int(m.Quantity),
@@ -91,7 +94,12 @@ func AddItem(g *CartGrain, m *messages.AddItem) error {
 		ArticleType: m.ArticleType,
 
 		StoreId: m.StoreId,
-	})
+	}
+	if m.ReservationEndTime != nil {
+		t := m.ReservationEndTime.AsTime()
+		cartItem.ReservationEndTime = &t
+	}
+	g.Items = append(g.Items, cartItem)
 	g.UpdateTotals()
 	return nil
 }