public TransferResult Transfer(DailyPolicy policy, Account source, Account destination, double amount, string reason, DateTime now)
{
if (string.IsNullOrWhiteSpace(reason))
{
return(TransferResult.InvalidReasonProvided());
}
var reservation = policy.Reserve(amount, now);
if (reservation == null)
{
return(TransferResult.DailyQuotaReached(policy.DailyLimit));
}
var withdrawResult = source.Withdraw(amount);
if (withdrawResult == WithdrawStatus.InsufficientFunds)
{
reservation.Cancel();
return(TransferResult.InsufficientFunds(source.Amount));
}
else if (withdrawResult == WithdrawStatus.AccountDoesNotAllowWithdrawals)
{
reservation.Cancel();
return(TransferResult.AccountCannotWithdraw());
}
if (!destination.Deposit(amount))
{
reservation.Cancel();
source.Deposit(amount);
}
return(TransferResult.Success());
}
public WithdrawResult Withdraw(DailyPolicy policy, Account account, double amount, DateTime now)
{
var reservation = policy.Reserve(amount, now);
if (reservation == null)
{
return(WithdrawResult.DailyQuotaReached(policy.DailyLimit));
}
var withdrawResult = account.Withdraw(amount);
if (withdrawResult == WithdrawStatus.InsufficientFunds)
{
reservation.Cancel();
return(WithdrawResult.InsufficientFunds(account.Amount));
}
else if (withdrawResult == WithdrawStatus.AccountDoesNotAllowWithdrawals)
{
return(WithdrawResult.AccountCannotWithdraw());
}
return(WithdrawResult.Success());
}
public void Cancel()
{
DailyPolicy.CancelReservation(this);
}
public Reservation(DailyPolicy dailyPolicy, double amount, DateTime date)
{
DailyPolicy = dailyPolicy;
Timestamp = date;
Amount = amount;
}
