// utility
public override string ToString()
{
StringBuilder sb = new StringBuilder();
FinalizedCoffees?.ToList().ForEach(c => sb.AppendLine(c.ToString()));
sb.AppendLine();
sb.AppendLine($"The total cost of your order is ${GetTotalPrice()}");
return(sb.ToString());
}
// Current Working Coffee management methods
public void FinalizeWorkingCoffee()
{
if (CurrentWorkingCoffee == null)
{
// Not really the end of the world. Just going to log an error.
logger.WriteError("Tried to add null working coffee to order.");
return;
}
FinalizedCoffees = FinalizedCoffees.Append(CurrentWorkingCoffee);
CurrentWorkingCoffee = null;
}
// Transaction-based methods
public string CompleteTransaction()
{
// This validation calls for some refactoring
decimal change = MoneyAdded - GetTotalPrice();
if (!FinalizedCoffees.ToList().Any())
{
throw new TransactionCompletedWithoutOrdersException("A transaction cannot be completed because there are currently no coffees ordered.");
}
if (change < 0)
{
throw new InvalidMoneyException($"You have not provided sufficient money to cover the cost of the order. Please add {change}.");
}
// Not sure why but couldn't get FinalizedCoffees.ToList().Clear() to work
// Do want to get rid of this initialization here
FinalizedCoffees = new List <ICoffee>();
return($"Thank you for your patronage. Your change is: {change}");
}
private decimal GetTotalPrice()
{
return(FinalizedCoffees.Select(c => c.GetPrice()).Sum());
}
