public void DispenseCoins(decimal amount)
{
foreach (var coinTube in CoinTubes
.Where(i => i.CountInTube > 0 && i.Spec.Value <= amount)
.OrderByDescending(i => i.Spec.Value)
.ThenByDescending(i => i.CountInTube))
{
while (amount > 0m && coinTube.CountInTube > 0 &&
amount >= coinTube.Spec.Value)
{
amount -= coinTube.Spec.Value;
AmountInserted -= coinTube.Spec.Value;
coinTube.CountInTube--;
OnCoinDispensed(new CoinDispensedEventArgs(coinTube.Spec));
}
}
}
public bool CanDispenseCoins(decimal amount)
{
foreach (var coinTube in CoinTubes
.Where(i => i.CountInTube > 0 && i.Spec.Value <= amount)
.OrderByDescending(i => i.Spec.Value)
.ThenByDescending(i => i.CountInTube))
{
var virtualCountInTube = coinTube.CountInTube;
while (amount > 0m && virtualCountInTube > 0 &&
amount >= coinTube.Spec.Value)
{
amount -= coinTube.Spec.Value;
virtualCountInTube--;
}
}
return(amount == 0m);
}
public int GetCoinInventory(CoinSpecification coinType)
{
return(CoinTubes.Where(i => i.Spec == coinType)
.Sum(i => i.CountInTube));
}