static string RequestInput(ATM atm)
{
string[] input = Read();
string command = "";
int[] parameters = new int[input.Length - 1];
List <string> balances = new List <string>();
if (input.Length > 0)
{
command = input[0].ToUpper();
if (input.Length > 1)
{
for (int i = 1; i < input.Length; i++)
{
parameters[i - 1] = Int32.Parse(input[i].Replace("$", ""));
}
}
}
switch (command)
{
case "HELP":
Print("Q - Quits the program");
Print("R - Restocks ATM");
Print("I <denominations> - Displays current balances");
Print("W <dollar amount> - Withdraw requested amount");
break;
case "Q":
break;
case "R":
atm.Restock();
balances = atm.GetBalances();
Print("Machine balance:");
foreach (var balance in balances)
{
Print(balance);
}
break;
case "I":
if (parameters.Length > 0)
{
balances = atm.GetBalances(parameters);
}
else
{
balances = atm.GetBalances();
}
Print("Machine balance:");
if (balances != null)
{
foreach (var balance in balances)
{
Print(balance);
}
}
else
{
Print("Failure: Invalid command");
}
break;
case "W":
int withdrawlAmount = 0;
if (parameters.Length == 1)
{
withdrawlAmount = parameters[0];
}
if (atm.Withdraw(withdrawlAmount))
{
Print(String.Format("Success: Dispensed ${0}", withdrawlAmount));
balances = atm.GetBalances();
Print("Machine balance:");
foreach (var balance in balances)
{
Print(balance);
}
}
else
{
Print("Failure: Insufficient funds");
}
break;
default:
Print("Failure: Invalid command");
break;
}
return(command);
}