E-Toll

Account.java

public class Account{
    private int pin;
    private double totalBalance;
    
    public Account(int thePin, double thetotalBalance){
        pin = thePin;
        totalBalance = thetotalBalance;
    }
    
    public boolean validatePIN(int userPIN){
        if(userPIN == pin){
            return true;
        }
        else{
            return false;
        }
    }
    
    public double getTotalBalance(){  
     return totalBalance;  
    }
   
    public void debit(double amount){
        totalBalance -= amount;  
    }
    
    public int getAccountNumber(){  
     return pin;  
    }
}

Cost.java

public class Cost{
    private final static double amount = 1500.0;
    private EtollDatabase etollDatabase;
    private Screen screen;
    private Gate gate;
    private double saldo;
    private int accountnumb;
    private Receipt struk;
    
    public Cost(int userAccountNumber, EtollDatabase data, Screen scren){
        accountnumb = userAccountNumber;
        etollDatabase = data;
        screen = scren;
        saldo = etollDatabase.getTotalBalance(accountnumb);
        gate = new Gate(screen);
        struk = new Receipt(screen, etollDatabase, accountnumb);
    }
    
    public void execute(){
        if(saldo >= amount){
            etollDatabase.debit(accountnumb, amount);
            gate.OPEN();
            struk.cetak();
        }
        else{
            screen.displayMessageLine("Saldo tidak cukup");
        }
        return;
    }
}

Etoll.java

public class Etoll{
    private boolean userAuthed;
    private int currentAccountnumb;
    private Screen screen;
    private Keypad keypad;
    private EtollDatabase etollDatabase;
    private Cost cost;
    
    public Etoll(){
        userAuthed = false;
        currentAccountnumb = 0;
        screen = new Screen();
        keypad = new Keypad();
        etollDatabase = new EtollDatabase();
    }
    
    public void run(){
        while(true){
            while(!userAuthed){
                screen.displayMessageLine("\nSelamat Datang");
                authenticateUser();
            }
            
            Transaksi();
            userAuthed = false;
            currentAccountnumb = 0;
            screen.displayMessageLine("\nSampai jumpa lagi");
            return;
        }
    }
    
    private void authenticateUser(){
        screen.displayMessageLine("Masukkan nomor serial");
        int pin = keypad.getInput();
        
        userAuthed = etollDatabase.authenticateUser(pin);
        if(userAuthed){
            currentAccountnumb = pin;
        }
        else{
            screen.displayMessageLine("Serial salah");
            screen.displayMessageLine("Coba lagi");
        }
    }
    
    private void Transaksi(){
        cost = new Cost(currentAccountnumb, etollDatabase, screen);
        cost.execute();
    }
}

EtollDatabase.java

public class EtollDatabase{
    private Account[] accounts;
    
    public EtollDatabase(){
        accounts = new Account[2];
        accounts[0] = new Account(54321, 100.0);
        accounts[1] = new Account(12345, 120000.0);
    }
    
    private Account getAccount(int accountNumber){
        for(Account currentAccount : accounts){
            if(currentAccount.getAccountNumber() == accountNumber){ 
                return currentAccount;
            }
        }
        return null;
    }
    
    public boolean authenticateUser(int userPIN){
        Account userAccount = getAccount(userPIN);
        if(userAccount != null){
            return userAccount.validatePIN(userPIN);
        }
        else{
            return false;
        }
    }
    
    public double getTotalBalance(int userAccountNumber){
        return getAccount(userAccountNumber).getTotalBalance();
    }
    
    public void debit(int userAccountNumber, double amount){
        getAccount(userAccountNumber).debit(amount);
    }
}

Gate.java

public class Gate{
    private Screen GateScreen;
    
    public Gate(Screen scren){
        GateScreen = scren;
    }
    
    public void OPEN(){
        GateScreen.displayMessageLine("GATE OPEN");
    }
}

Keypad.java

import java.util.Scanner;
public class Keypad{
    private Scanner input;
    
    public Keypad(){
        input = new Scanner(System.in);
    }
    
    public int getInput(){
        return input.nextInt();
    }
}

Receipt.java

import java.util.Date;
import java.text.DateFormat;
import java.text.SimpleDateFormat;

public class Receipt{
    private Screen screen;
    private EtollDatabase etollDatabase;
    private int akun;
    
    public Receipt(Screen scren, EtollDatabase data, int accountNumb){
        screen = scren;
        etollDatabase = data;
        akun = accountNumb;
    }
    
    public void cetak(){
        double saldo = etollDatabase.getTotalBalance(akun);
        Date date = new Date();
        DateFormat dateFormat = new SimpleDateFormat("HH:mm:ss dd/MM/yyyy");
        
        screen.displayMessageLine("\nRECEIPT");
        screen.displayMessageLine(dateFormat.format(date));
        screen.displayMessageLine("JASA MARGA");
        screen.displayMessageLine("Biaya toll: Rp.1500");
        screen.displayMessage("Sisa saldo: Rp.");
        screen.dislayRupiahAmount(saldo);
    }
}

Screen.java

public class Screen{
    public void displayMessage(String message){
        System.out.print(message);
    }
    
    public void displayMessageLine(String message){
        System.out.println(message);
    }
    
    public void dislayRupiahAmount(double amount){
        System.out.printf("Rp%,.2f", amount);
    }
}

Test.java

public class Test{
    public static void main(String[] args){
        Etoll Etollnya = new Etoll();
        Etollnya.run();
    }
}