// We use AND logic for calculating count of possiable usages based on all buy items
private int GetPossiableNumberOfUse(BuyXGetYPromotion promotion, IEnumerable <OrderToProduct> notPromoProducts)
{
var toReturn = 0;
foreach (var buyItem in promotion.BuyItems)
{
var productRecord = notPromoProducts.FirstOrDefault(p => p.IdProduct == buyItem.IdProduct);
if (productRecord == null)
{
toReturn = 0;
break;
}
var maxUseForBuyItem = (int)Math.Floor(productRecord.QTY / buyItem.QTY);
toReturn = toReturn == 0 ? maxUseForBuyItem : Math.Min(toReturn, maxUseForBuyItem);
}
return(toReturn);
}
public Result <BasePromotion> Post([FromBody] BuyXGetYPromotion item)
{
return(_promotionService.AddPromotion(item));
}
