logIn

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package ScheduleManager.pkg;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Scanner;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JOptionPane;
import javax.swing.JTextField;

/**
 *
 * @author hanaezz
 */
public class logIn extends javax.swing.JFrame {

    File file;

    /**
     * Creates new form logIn
     */
    public logIn() throws IOException {
        String path="//Users//hanaezz//NetBeansProjects//ScheduleManager//src//ScheduleManager//pkg//info.txt";
             file = new File(path); //creates new File
                if (file.exists()) {
                    initComponents();
                } else { //make a new file if it's not already existent
                    createUserPass createInfo = new createUserPass();
                    createInfo.setVisible(true);
                    createInfo.setAlwaysOnTop(true);
                    this.dispose();
                    this.setVisible(false);
                }
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {

        passwordField = new javax.swing.JPasswordField();
        usernameField = new javax.swing.JTextField();
        jLabel2 = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();
        logInButton = new javax.swing.JButton();
        quitButton = new javax.swing.JButton();
        image = new javax.swing.JLabel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("Log-In");
        setBackground(new java.awt.Color(255, 255, 255));

        jLabel2.setText("Username");

        jLabel3.setText("Password");

        logInButton.setText("log in");
        logInButton.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                logInButtonActionPerformed(evt);
            }
        });

        quitButton.setText("quit");

        image.setIcon(new javax.swing.ImageIcon(getClass().getResource("/ScheduleManager/pkg/King_Abdulaziz_University_(emblem).jpg"))); // NOI18N

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addComponent(logInButton)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(quitButton)
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jLabel3, javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jLabel2, javax.swing.GroupLayout.Alignment.TRAILING))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                    .addComponent(usernameField, javax.swing.GroupLayout.DEFAULT_SIZE, 222, Short.MAX_VALUE)
                    .addComponent(passwordField))
                .addGap(17, 17, 17))
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap(62, Short.MAX_VALUE)
                .addComponent(image)
                .addGap(51, 51, 51))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addComponent(image)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(usernameField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel2))
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(passwordField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel3))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(quitButton)
                    .addComponent(logInButton))
                .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
        );

        pack();
    }// </editor-fold>

    private void logInButtonActionPerformed(java.awt.event.ActionEvent evt) {
        int loginAttempts = 0;
        String enteredUsername = usernameField.getText();
        String enteredPassword = passwordField.getText();
        String encryptedEnteredUsername = encrypt(enteredUsername);
        String encryptedEnteredPassword = encrypt(enteredPassword);
        String truePassword = "";
        String trueUsername = "";
        String securityAnswer = "";
        Scanner sc;
        try {
            sc = new Scanner(new File("\\src\\Schedulemanager\\pkg\\info.txt"));
            trueUsername = sc.nextLine();
            truePassword = sc.nextLine();
            securityAnswer = sc.nextLine();
            sc.close();
        } catch (FileNotFoundException ex) {
            Logger.getLogger(logIn.class.getName()).log(Level.SEVERE, null, ex);
        }
        System.out.println("the boolean is " + encryptedEnteredUsername.equals(trueUsername));
        if ((encryptedEnteredUsername.equals(trueUsername))
                && (encryptedEnteredPassword.equals(truePassword))) {
            MainScreen main = new MainScreen();
            main.setVisible(true);
            main.setAlwaysOnTop(true);
            this.setVisible(false);
            this.dispose();
        } else if (loginAttempts < 5) {
            String errorMessage = "Incorrect User/Password Combination. Attempt "
                    + loginAttempts + " of 5.";
            JOptionPane.showMessageDialog(null,
                    errorMessage,
                    "ERROR",
                    JOptionPane.WARNING_MESSAGE);
        } else if (loginAttempts == 5) {
            String errorMessage = "Security Question: What was your favourite class in college?";
            String s = (String) JTextField.showInputDialog(
                    null,
                    errorMessage,
                    "ERROR",
                    JOptionPane.PLAIN_MESSAGE,
                    JOptionPane.WARNING_MESSAGE,
                    null,
                    securityAnswer);

            if ((s != null) && (s.length() > 0)) { //if something was entered returned
                String encryptedAnswer = encrypt(s);
                if(encryptedAnswer.equals(securityAnswer)){
                return;
                }
            } else {
                String quitMessage = "Incorrect. Exiting.";
            JOptionPane.showMessageDialog(null,
                    errorMessage,
                    "ERROR",
                    JOptionPane.WARNING_MESSAGE);
            }
        }
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        /* Set the Nimbus look and feel */
        //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
        /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
         * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
         */
        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException ex) {
            java.util.logging.Logger.getLogger(logIn.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(logIn.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(logIn.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(logIn.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /* Create and display the form */
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                try{
                new logIn().setVisible(true);
                }
                catch(Exception e){
                    e.printStackTrace();
                }
            }
        });
    }

    public static String encrypt(String x) { //caesar cipher shifts letters by 3 places
        char[] message = x.toCharArray();
        for (int i = 0; i < message.length; i++) {
            char character = message[i];
            character = (char) (character + 3);
            if (character > 'z') {
                character = (char) (character - 26);
            } else if (character < 'a') {
                character = (char) (character + 26);
            }
            message[i] = character;
        }
        String output = new String(message);
        System.out.println("from " + x + " to " + output);
        return output;
    }

    // Variables declaration - do not modify
    private javax.swing.JLabel image;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JButton logInButton;
    private javax.swing.JPasswordField passwordField;
    private javax.swing.JButton quitButton;
    private javax.swing.JTextField usernameField;
    // End of variables declaration
}