public int Checkout()
{
int confCode = -1;
double minutesUnused = Math.Floor((DateTime.Now - this.ScheduledCheckOutTime).TotalHours);
if (minutesUnused < 0)
{
confCode = ProcessTransaction(createHoursArray(minutesUnused * -1), TransactionType.REFUND);
}
else if (minutesUnused > 10) // 10 minute grace period before additional charges
{
confCode = ProcessTransaction(createHoursArray(minutesUnused), TransactionType.SALE);
}
actualAppointmentCheckout = DateTime.Now;
appointmentStation.check_out();
return(confCode);
}