public class Deposit extends Transaction
{
    private double amount;
    private Keypad keypad;
    private DepositSlot depositSlot;
    private final static int CANCELED = 0;


    public Deposit(int userAccountNumber, Screen atmScreen, BankDatabase atmBankDatabase, Keypad atmKeypad, DepositSlot atmDepositSlot){

        super(userAccountNumber, atmScreen, atmBankDatabase);

        keypad = atmKeypad;
        depositSlot = atmDepositSlot;
    }
    @Override
    public void execute(){
        BankDatabase bankDatabase = getBankDatabase();
        Screen screen = getScreen();

        amount = promptForDepositAmount();

        if(amount != CANCELED){

            screen.displayMessage("\nPlease insert a deposit envelope containing ");
            screen.displayDollarAmount(amount);
            screen.displayMessage(".");

            boolean envelopeReceived = depositSlot.isEnvelopeReceived();

            if(envelopeReceived){
                screen.displayMessageLine("\nYour envelope has been received.");
                screen.displayMessage("NOTE: The money just deposited will not be available until we verify the amount");
                screen.displayMessage("of any enclosed cash and your checks clear.");

                bankDatabase.credit(getAccountNumber(), amount);
            }
            else{

                screen.displayMessageLine("\nYou did not insert an envelope");
                screen.displayMessageLine("So, the ATM has canceled your transaction.");
            }
        }
        else{

            screen.displayMessageLine("\nCanceling transaction...");
        }
    }

    private double promptForDepositAmount(){
        Screen screen = getScreen();
        screen.displayMessage("\nPlease enter a deposit amount in" + "CENTS (or 0 to cancel)");
        int input = keypad.getInput();

        if(input == CANCELED) return CANCELED;
        else{
            return (double) input;
        }
    }
}