/// <summary>
/// Handles all of states that are passed to the controller.
/// </summary>
/// <param name="s">The string passed from the input text box on the form.</param>
/// <param name="stat">The status passed in by the form.</param>
/// <returns>A tuple containing the new status, as well as a double value that will be used for a variety of purposes.</returns>
public Tuple <TellerStatus, double> handle(string s, TellerStatus stat)
{
state = stat;
switch (state)
{
case TellerStatus.AttemptClosingCustomerAccount:
{
int acctNum = 0;
bool intOK = int.TryParse(s, out acctNum);
if (intOK)
{
if (aDatabase.doesAccountExist(acctNum))
{
if (aDatabase.logInAccount(acctNum) == true)
{
currentAccountNum = acctNum;
output = aDatabase.returnAccountBalance(currentAccountNum);
completeWithdrawal(currentAccountNum, output);
MessageBox.Show("The account provided was emptied. Here's $" + output.ToString("00.00") + ", just for you.", "Dolla Dolla Bills Ya'll");
aDatabase.logOutAccount(currentAccountNum);
cDatabase.removeCustomer(aDatabase.lookUpAccountReturnCustomerNumber(currentAccountNum));
aDatabase.removeAccount(currentAccountNum);
state = TellerStatus.ClosedCustomerAccount;
}
else
{
state = TellerStatus.AccountAlreadyInUse;
}
}
else
{
state = TellerStatus.AccountNotFound;
}
}
else
{
//figure out what to do if invalid input.
state = TellerStatus.AccountNotFound;
}
break;
}
case TellerStatus.ClosedCustomerAccount:
{
state = TellerStatus.Start;
break;
}
case TellerStatus.AttemptClosingBankAccount:
{
int acctNum = 0;
bool intOK = int.TryParse(s, out acctNum);
if (intOK)
{
if (aDatabase.doesAccountExist(acctNum))
{
if (aDatabase.logInAccount(acctNum) == true)
{
currentAccountNum = acctNum;
output = aDatabase.returnAccountBalance(currentAccountNum);
completeWithdrawal(currentAccountNum, output);
MessageBox.Show("Account emptied. Here's $" + output.ToString("00.00") + ", just for you.", "Dolla Dolla Bills Ya'll");
aDatabase.logOutAccount(currentAccountNum);
aDatabase.removeAccount(currentAccountNum);
state = TellerStatus.ClosedBankAccount;
}
else
{
state = TellerStatus.AccountAlreadyInUse;
}
}
else
{
state = TellerStatus.AccountNotFound;
}
}
else
{
//figure out what to do if invalid input.
state = TellerStatus.AccountNotFound;
}
break;
}
case TellerStatus.ClosedBankAccount:
{
state = TellerStatus.Start;
break;
}
case TellerStatus.AttemptCreatingNewCustomerAccount:
{
currentName = s;
state = TellerStatus.NeedValidAddress;
break;
}
case TellerStatus.NeedValidAddress:
{
currentAddress = s;
state = TellerStatus.CreatedNewCustomerAccount;
output = (double)(cDatabase.addNewCustomer(currentName, currentAddress));
break;
}
case TellerStatus.CreatedNewCustomerAccount:
{
state = TellerStatus.Start;
break;
}
case TellerStatus.AttemptCreatingNewBankAccount:
{
int custNum = 0;
bool intOK = int.TryParse(s, out custNum);
if (intOK)
{
if (cDatabase.lookUpCustomer(custNum) != null)
{
//Customer newCust = cDatabase.lookUpCustomer(custNum);
int newNum = aDatabase.addNewAccount(custNum, 0.0);
cDatabase.addAccountToCustomer(custNum, newNum);
output = newNum;
state = TellerStatus.CreatedNewBankAccount;
}
else
{
state = TellerStatus.AccountNotFound;
}
}
else
{
state = TellerStatus.AccountNotFound;
}
break;
}
case TellerStatus.CreatedNewBankAccount:
{
state = TellerStatus.Start;
break;
}
case TellerStatus.Depositing:
{
int acctNum = 0;
bool intOK = int.TryParse(s, out acctNum);
if (intOK)
{
if (aDatabase.doesAccountExist(acctNum))
{
if (aDatabase.logInAccount(acctNum) == true)
{
currentAccountNum = acctNum;
output = aDatabase.returnAccountBalance(currentAccountNum);
state = TellerStatus.NeedValidDepositAmount;
currentAccountNum = acctNum;
}
else
{
state = TellerStatus.AccountAlreadyInUse;
}
}
else
{
state = TellerStatus.AccountNotFound;
}
}
else
{
//figure out what to do if invalid input.
state = TellerStatus.AccountNotFound;
}
break;
}
case TellerStatus.NeedValidDepositAmount:
{
double withAmmt = 0;
bool doubleOk = Double.TryParse(s, out withAmmt);
if (doubleOk == true)
{
aDatabase.depositIntoAccount(currentAccountNum, withAmmt);
output = aDatabase.returnAccountBalance(currentAccountNum);
MessageBox.Show("Here's your new balance: $" + output.ToString("00.00") + ".", "Dolla Dolla Bills Ya'll");
state = TellerStatus.DepositSuccess;
}
else
{
//Add the invalid input state here.
state = TellerStatus.InvalidInput;
}
break;
}
case TellerStatus.DepositSuccess:
{
aDatabase.logOutAccount(currentAccountNum);
state = TellerStatus.Start;
break;
}
case TellerStatus.Withdrawing:
{
int acctNum = 0;
bool intOK = int.TryParse(s, out acctNum);
if (intOK)
{
if (aDatabase.doesAccountExist(acctNum))
{
if (aDatabase.logInAccount(acctNum) == true)
{
currentAccountNum = acctNum;
output = aDatabase.returnAccountBalance(currentAccountNum);
state = TellerStatus.NeedValidWithdrawalAmount;
}
else
{
state = TellerStatus.AccountAlreadyInUse;
}
}
else
{
state = TellerStatus.AccountNotFound;
}
}
else
{
//figure out what to do if invalid input.
state = TellerStatus.AccountNotFound;
}
break;
}
case TellerStatus.NeedValidWithdrawalAmount:
{
double withAmmt = 0;
bool doubleOk = Double.TryParse(s, out withAmmt);
if (doubleOk == true)
{
if ((output - withAmmt) >= 0)
{
completeWithdrawal(currentAccountNum, withAmmt);
output = checkBalance(currentAccountNum);
state = TellerStatus.WithdrawalSuccess;
MessageBox.Show("Here's $" + withAmmt.ToString("00.00") + ", just for you.", "Dolla Dolla Bills Ya'll");
}
else
{
state = TellerStatus.InvalidInput;
}
}
else
{
//If invalid input.
state = TellerStatus.InvalidInput;
}
break;
}
case TellerStatus.WithdrawalSuccess:
{
aDatabase.logOutAccount(currentAccountNum);
state = TellerStatus.Start;
break;
}
case TellerStatus.BalanceInquiry:
{
int acctNum = 0;
bool intOK = int.TryParse(s, out acctNum);
if (intOK)
{
if (aDatabase.doesAccountExist(acctNum))
{
if (aDatabase.logInAccount(acctNum) == true)
{
currentAccountNum = acctNum;
output = aDatabase.returnAccountBalance(currentAccountNum);
state = TellerStatus.DisplayingBalanceInquiry;
}
else
{
state = TellerStatus.AccountAlreadyInUse;
}
}
else
{
state = TellerStatus.AccountNotFound;
}
}
else
{
//figure out what to do if invalid input.
state = TellerStatus.AccountNotFound;
}
break;
}
case TellerStatus.DisplayingBalanceInquiry:
{
state = TellerStatus.Start;
aDatabase.logOutAccount(currentAccountNum);
break;
}
case TellerStatus.InvalidInput:
{
state = TellerStatus.Start;
aDatabase.logOutAccount(currentAccountNum);
break;
}
case TellerStatus.AccountAlreadyInUse:
{
state = TellerStatus.Start;
break;
}
case TellerStatus.AccountNotFound:
{
state = TellerStatus.Start;
break;
}
default: { break; }
}
return(new Tuple <TellerStatus, double>(state, output));
}