public virtual bool CanBuySnack(int position)
{
ValidationMessages.Clear();
var snackPile = GetSnackPile(position);
if (snackPile.Quantity == 0)
{
ValidationMessages.Add(Constants.NoSnackAvailableToBuy);
return(false);
}
if (snackPile.Price > MoneyInTransaction)
{
ValidationMessages.Add(Constants.NotEnoughMoneyInserted);
return(false);
}
if (!MoneyInside.CanAllocate(snackPile.Price))
{
ValidationMessages.Add(Constants.NotEnoughChange);
return(false);
}
return(true);
}
public virtual void TakeMoney(decimal amount)
{
if (!MoneyInside.CanAllocate(amount))
{
throw new InvalidOperationException();
}
var allocatedMoney = MoneyInside.Allocate(amount);
MoneyInside -= allocatedMoney;
decimal amountWithCommision = CalculateAmountWithCommision(amount);
MoneyCharged += amountWithCommision;
AddDomainEvent(new BalanceChangedEvent(amountWithCommision));
}
public string CanTakeMoney(decimal amount)
{
if (amount <= 0)
{
return("Invalid amount");
}
if (MoneyInside.Amount < amount)
{
return("Not enough money");
}
if (!MoneyInside.CanAllocate(amount))
{
return("Not enough change");
}
return(string.Empty);
}
public virtual string CanBuySnack(int position)
{
var snackPile = GetSnackPile(position);
if (snackPile.Quantity == 0)
{
return("The snack pile is empty.");
}
if (MoneyInTransaction < snackPile.Price)
{
return("Not enough money.");
}
if (!MoneyInside.CanAllocate(MoneyInTransaction - snackPile.Price))
{
return("Not enough change.");
}
return(string.Empty);
}
private bool CanTakeMoney(decimal amount)
{
if (amount <= 0)
{
throw new InvalidOperationException();
}
if (MoneyInside.Amount < amount)
{
throw new InvalidOperationException();
}
if (!MoneyInside.CanAllocate(amount))
{
throw new InvalidOperationException();
}
return(true);
}
public bool CanBuySnak(int position)
{
var slot = GetSlot(position);
if (slot.GetItemsQuantity() < 0)
{
return(false);
}
if (MoneyInTransaction.Amount < slot.GetItemPrice())
{
return(false);
}
var chargeToAllocate = MoneyInTransaction.Amount - slot.GetItemPrice();
if (!MoneyInside.CanAllocate(chargeToAllocate))
{
return(false);
}
return(true);
}
public virtual bool CanWithdrawal(decimal amount)
{
ValidationMessages.Clear();
if (amount <= 0m)
{
ValidationMessages.Add(Constants.InvalidAmount);
return(false);
}
if (amount > MoneyInside.Amount)
{
ValidationMessages.Add(Constants.NotEnoughChange);
return(false);
}
if (!MoneyInside.CanAllocate(amount))
{
ValidationMessages.Add(Constants.NotEnoughChange);
return(false);
}
return(true);
}