public void Withdraw(Amount amount)
{
if (amount.IsOver(AmountPolicy.Maximum))
{
Apply(new WithdrawalAmountExceeded(amount));
return;
}
Apply(new AmountWithdrawn(amount));
}
public AmountWithdrawn(Amount amount)
{
Amount = amount;
}
public AmountDeposited(Amount amount)
{
Amount = amount;
}
public WithdrawalAmountExceeded(Amount amount)
{
Amount = amount;
}
private void When(AmountDeposited @event)
{
_amount = _amount.Add(@event.Amount);
}
private void When(AmountWithdrawn @event)
{
_amount = _amount.Substract(@event.Amount);
}
public void Deposit(Amount amount)
{
Apply(new AmountDeposited(amount));
}
public Account(Guid id)
{
_id = id;
_eventRecorder = new EventRecorder();
_amount = new Amount(0);
}
public Amount Substract(Amount amount)
{
return new Amount(Value - amount.Value);
}
public bool IsOver(Amount amount)
{
return Value > amount.Value;
}
public Amount Add(Amount amount)
{
return new Amount(Value + amount.Value);
}