/// <summary>
/// Enqueues customer in Cashier's queue
/// </summary>
/// <param name="customer">Customer to wait in Cashier Queue</param>
/// <returns>Processing time remaining from time of customer arrival</returns>
public int EnqueueCustomer(Customer customer)
{
if (customer.ArrivalTime != _lastCalculationTime)
{
MoveClockForward(customer.ArrivalTime - _lastCalculationTime);
}
_customersToServe.AddLast(customer);
_numCustomers++;
return CalculateCurrentCompletionTime();
}
private bool EnqueueCustomer(Customer customer)
{
ICashier selectedCashier = customer.ChooseCashier(_cashiers);
if (selectedCashier == null) return false;
int cashierRemainingProcessingTime = selectedCashier.EnqueueCustomer(customer);
if (_maxProcessingTimeFromStart == 0)
{
_maxProcessingTimeFromStart = customer.ArrivalTime + cashierRemainingProcessingTime;
}
else
{
if ((customer.ArrivalTime + cashierRemainingProcessingTime) > _maxProcessingTimeFromStart)
{
_maxProcessingTimeFromStart = customer.ArrivalTime + cashierRemainingProcessingTime;
}
}
return true;
}