import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPasswordField;
import javax.swing.JTextField;


public class SarmientoFileAccess {
    JFrame frame;
    JLabel userLabel, passLabel;
    JTextField userText;
    JPasswordField passPF;
    JButton loginButton;
    Scanner scan;
    int count;

    public static void main(String[] args) {
        SarmientoFileAccess app = new SarmientoFileAccess();
        app.initialize();
    }

    public void loginButtonActionPerformed(ActionEvent evt) throws FileNotFoundException {
        String username = userText.getText();
        String password = passPF.getPassword().toString();
        boolean loginSuccess = false;
        scan = new Scanner(new File("UsernamesAndPasswords.txt"));

        while(scan.hasNext()) {
            if(scan.nextLine().equals(username + " " + password)) {
                loginSuccess = true;
                break;
            }
        }

        if(loginSuccess) {
            JOptionPane.showMessageDialog(frame, "Login Success! Previous failed login attempts: " + count, "Success!", JOptionPane.PLAIN_MESSAGE);
        } else {
            JOptionPane.showMessageDialog(frame, "Login Failed!", "Failed!", JOptionPane.ERROR_MESSAGE);
            count++;
        }

        //userText.setText(password);
    }

    public void initialize() {
        //initialize components
        frame = new JFrame("Franz");
        userLabel = new JLabel("Username:");
        passLabel = new JLabel("Password:");
        userText = new JTextField();
        passPF = new JPasswordField();
        loginButton = new JButton("Login");
        count = 0;

        //set attributes
        frame.setLocationRelativeTo(null);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setPreferredSize(new Dimension(200, 120));
        frame.setLayout(new FlowLayout());
        frame.setResizable(false);
        userText.setPreferredSize(new Dimension(100, 20));
        passPF.setPreferredSize(new Dimension(100, 20));

        //add action listeners
        loginButton.addActionListener(
            new ActionListener() {
                public void actionPerformed(ActionEvent evt) {
                    try {
                        loginButtonActionPerformed(evt);
                    } catch (FileNotFoundException e) {
                        e.printStackTrace();
                    }
                }
            }
        );

        //add components to frame
        frame.getContentPane().add(userLabel);
        frame.getContentPane().add(userText);
        frame.getContentPane().add(passLabel);
        frame.getContentPane().add(passPF);
        frame.getContentPane().add(loginButton);

        //finalize GUI
        frame.pack();
        frame.setVisible(true);
    }
}