public void AddItem(char c, int itemPrice, ICheckoutSystem checkoutSystem)
{
foreach (var specialOffer in _specialOfferItems)
{
if (specialOffer.Key == c)
{
_specialOfferCounter[c] ++;
var maxHitCount = specialOffer.Value.Item1;
var maxCountIsHit = _specialOfferCounter[c] == maxHitCount;
if (maxCountIsHit)
{
var newPrice = specialOffer.Value.Item2;
var oldPrice = itemPrice * maxHitCount;
checkoutSystem.SpecialOfferOf(newPrice, oldPrice);
_specialOfferCounter[c] = 0;
}
}
}
}