public decimal GetTotal()
{
decimal markdown;
total = 0;
foreach (KeyValuePair <string, decimal> LineItem in Receipt)
{
if (Specials.ContainsKey(LineItem.Key))
{
decimal val = 0;
decimal itemsLeft = LineItem.Value;
Special GenericSpecial = Specials[LineItem.Key];
if (GenericSpecial.GetType() == typeof(SpecialBuyNgetMatXPctOff))
{
SpecialBuyNgetMatXPctOff special = (SpecialBuyNgetMatXPctOff)GenericSpecial;
while (itemsLeft > 0)
{
if ((itemsLeft > special.m) && (LineItem.Value - itemsLeft < special.limit))
{
val += special.m;
itemsLeft -= special.m;
if (itemsLeft < special.n)
{
val += itemsLeft * (1 - special.pct);
itemsLeft = 0;
}
else
{
val += special.n * (1 - special.pct);
itemsLeft -= special.n;
}
}
else
{
val += itemsLeft;
itemsLeft = 0;
}
}
total += (costList[LineItem.Key].cost - (MarkDownList.TryGetValue(LineItem.Key, out markdown) ? markdown : 0)) * val;
}
else if (GenericSpecial.GetType() == typeof(SpecialNForX))
{
SpecialNForX special = (SpecialNForX)GenericSpecial;
while ((itemsLeft >= special.n) && (LineItem.Value - itemsLeft < special.limit))
{
itemsLeft -= special.n;
total += (special.cost - (MarkDownList.TryGetValue(LineItem.Key, out markdown) ? markdown : 0)) * special.n;
}
total += (costList[LineItem.Key].cost - (MarkDownList.TryGetValue(LineItem.Key, out markdown) ? markdown : 0)) * itemsLeft;
}
}
else
{
total += (costList[LineItem.Key].cost - (MarkDownList.TryGetValue(LineItem.Key, out markdown) ? markdown : 0)) * LineItem.Value;
}
}
return(total);
}
public void AddSpecialNForX(string name, int N, decimal X, int limit = Int16.MaxValue)
{
SpecialNForX special = new SpecialNForX(name, N, X);
special.limit = limit;
if (Specials.ContainsKey(name))
{
Specials[name] = special;
}
else
{
Specials.Add(name, special);
}
}