package student_manager;

import java.awt.BorderLayout;
import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.BoxLayout;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JTextField;
import java.awt.Color;
import java.awt.Component;
import java.awt.Font;
import javax.swing.SwingConstants;
import javax.swing.JPasswordField;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.util.Arrays;
import java.awt.event.ActionEvent;
import javax.swing.JSeparator;
import javax.swing.UIManager;

public class LoginWindow extends JFrame implements ActionListener{

	public static LoginWindow loginFrame = new LoginWindow();


	private JPanel contentPane;
	private JTextField tfUsername;
	private JPasswordField passwordField;
	private JButton btnLogin;
	private JButton btnCancel;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {

		EventQueue.invokeLater(new Runnable()
		{
			public void run()
			{
				try
				{

					loginFrame.setVisible(true);
				}
				catch (Exception e)
				{
					e.printStackTrace();
				}
			}
		});
	}


	/**
	 * Create the frame.
	 */
	public LoginWindow() {
		setTitle("Student Manager - Log in");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 450, 300);
		contentPane = new JPanel();
		contentPane.setBackground(new Color(51, 153, 204));
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);

		JLabel lblWelcome = new JLabel("Welcome to Student Manager,");
		lblWelcome.setHorizontalAlignment(SwingConstants.CENTER);
		lblWelcome.setFont(new Font("Arial", Font.BOLD | Font.ITALIC, 23));
		lblWelcome.setBounds(59, 11, 328, 23);
		contentPane.add(lblWelcome);

		JLabel lblUsername = new JLabel("Username");
		lblUsername.setForeground(new Color(51, 51, 51));
		lblUsername.setFont(new Font("Arial", Font.BOLD, 18));
		lblUsername.setBounds(86, 88, 89, 17);
		contentPane.add(lblUsername);

		JLabel lblPassword = new JLabel("Password");
		lblPassword.setForeground(new Color(51, 51, 51));
		lblPassword.setFont(new Font("Arial", Font.BOLD, 18));
		lblPassword.setBounds(86, 132, 89, 17);
		contentPane.add(lblPassword);

		JLabel lblNewLabel_1 = new JLabel("Please log in to continue!");
		lblNewLabel_1.setFont(new Font("Arial", Font.BOLD | Font.ITALIC, 23));
		lblNewLabel_1.setBounds(86, 35, 279, 26);
		contentPane.add(lblNewLabel_1);

		tfUsername = new JTextField();
		tfUsername.setFont(UIManager.getFont("TextField.font"));
		tfUsername.setBounds(185, 85, 120, 23);
		contentPane.add(tfUsername);
		tfUsername.setColumns(10);

		passwordField = new JPasswordField();
		passwordField.setFont(UIManager.getFont("PasswordField.font"));
		passwordField.setBounds(185, 129, 120, 23);
		contentPane.add(passwordField);

		btnLogin = new JButton("LOG IN");
		btnLogin.setBackground(new Color(204, 204, 204));
		btnLogin.setFont(new Font("Arial", Font.BOLD, 14));
		btnLogin.setBounds(86, 195, 89, 36);
		contentPane.add(btnLogin);
		btnLogin.addActionListener(this);

		btnCancel = new JButton("CANCEL");
		btnCancel.setBackground(new Color(204, 204, 204));
		btnCancel.setFont(new Font("Arial", Font.BOLD, 14));
		btnCancel.setBounds(276, 195, 89, 36);
		contentPane.add(btnCancel);
		btnCancel.addActionListener(this);

		JSeparator separator1 = new JSeparator();
		separator1.setForeground(new Color(0, 51, 102));
		separator1.setToolTipText("");
		separator1.setBackground(new Color(0, 51, 102));
		separator1.setBounds(10, 67, 414, 9);
		contentPane.add(separator1);

		JSeparator separator2 = new JSeparator();
		separator2.setForeground(new Color(0, 51, 102));
		separator2.setBackground(new Color(0, 51, 102));
		separator2.setBounds(10, 174, 414, 9);
		contentPane.add(separator2);
	}

	private static boolean isPasswordCorrect(char[] input) {
        boolean isCorrect = true;
        char[] correctPassword = { 'p', 'a', 's', 's', 'w', 'o', 'r', 'd' };

        if (input.length != correctPassword.length) {
            isCorrect = false;
        } else {
            isCorrect = Arrays.equals (input, correctPassword);
        }

        //Zero out the password.
        Arrays.fill(correctPassword,'0');

        return isCorrect;
    }

	@Override
	public void actionPerformed(ActionEvent e) {
		char[] input = passwordField.getPassword();
		if (e.getSource() == btnLogin){
			if (tfUsername.getText().equals("Admin") && isPasswordCorrect(input)){
			loginFrame.setVisible( false );
			CreateRecords.createFrame.setVisible(true);
			}
			else {
				JOptionPane.showMessageDialog(null, "Invalid username or password!");
			}
		}
		if (e.getSource() == btnCancel){
			System.exit(0);
		}

	}
}