import Core.DatabaseConnection;
import Domain.User;
import UI.Administration;
import UI.Booking;
import UI.RoomService;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.io.IOException;

public class MainClass {
    /** Frame objects and variables used by the frame **/
    private static JFrame windowsFrame = new JFrame("Hotel Management System V0.1");
    private static final int FRAME_WIDTH = 1200;
    private static final int FRAME_HEIGHT = 800;
    private static final int FRAME_X_ADJ = 16;
    private static final int FRAME_Y_ADJ = 39;

    private static Booking booking = new Booking();
    private static Administration administration = new Administration();
    private static RoomService roomService = new RoomService();

    private static CardLayout cardLayout = new CardLayout();


    private static JPanel userPanel = new JPanel(cardLayout);

    private static Login loginPanel  = new Login();

    private static JMenuBar jMenuBar = new JMenuBar();

    private static JMenuItem loginItem = getItem("login");
    private static JMenuItem adminItem = getItem("administration");
    private static JMenuItem bookingItem = getItem("booking");




    public static void main(String[] args) throws IOException {
        windowsFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        windowsFrame.setSize(FRAME_WIDTH + FRAME_X_ADJ, FRAME_HEIGHT + FRAME_Y_ADJ);

        jMenuBar.add(loginItem);
        jMenuBar.add(adminItem);
        jMenuBar.add(bookingItem);


        loggedOut();

        windowsFrame.setJMenuBar(jMenuBar);
        windowsFrame.setLayout(cardLayout);
        userPanel.add(loginPanel,"login");
        userPanel.add(booking, "booking");
        userPanel.add(administration, "administration");
        userPanel.add(roomService, "roomservice");
        userPanel.add(booking, "booking");
        userPanel.add(roomService, "roomservice");

        windowsFrame.add(userPanel);


        windowsFrame.setVisible(true);
    }

    public static void loggedOut () {
        adminItem.setEnabled(false);
        bookingItem.setEnabled(false);

    }

    public static void loggedIn() {
        if (loginPanel.currentUser.getIsAdministrator()) {
            adminItem.setEnabled(true);
            bookingItem.setEnabled(true);
        } else {
            bookingItem.setEnabled(true);
            adminItem.setEnabled(false);
        }
    }


    private static JMenuItem getItem (String name) {
        JMenuItem item = new JMenuItem(name);
        item.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                cardLayout.show(userPanel, name);
            }
        });

        return item;
    }
}


 class Login extends JPanel{
    /** Frame specifications needed **/
    private final int FRAME_HEIGHT = 600 + 39;
    private final int FRAME_WIDTH = 800 + 16;

    /** Panel specifications **/
    private final int PANEL_WIDTH = 300;
    private final int PANEL_HEIGHT = 90;

    /** Panel components **/
    private JLabel username, password;
    private JTextField enterUsername;
    private JPasswordField enterPassword;
    private JButton login;

    /** Functionality **/
    private DatabaseConnection dbConnection = new DatabaseConnection();
    public User currentUser = new User();


    /** Event Listeners **/
    private FocusListener textFieldListener = new FocusListener() {
        @Override
        public void focusGained(FocusEvent e) {}

        @Override
        public void focusLost(FocusEvent e) {
            enterUsername.setText(enterUsername.getText());
            enterPassword.setText(enterPassword.getText());
        }
    };

    private ActionListener loginListener = new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            if (dbConnection.checkAdmin(enterUsername.getText(), enterPassword.getText())) {
                currentUser.setAdministrator(true);
            } else {
                currentUser.setAdministrator(false);
            }
            if (dbConnection.checkLogin(enterUsername.getText(), enterPassword.getText())) {
                currentUser.setLoggedIn(true);
                MainClass.loggedIn();
            }
            if (!currentUser.getIsLoggedIn()) {
                JOptionPane.showMessageDialog(null, "You didn't type username/password correctly!");
            }
        }
    };




    /** Constructor **/
    public Login () {
        setLocation((FRAME_WIDTH / 2) - (PANEL_WIDTH / 2), (FRAME_HEIGHT / 2) - (PANEL_HEIGHT / 2));
        setSize(PANEL_WIDTH, PANEL_HEIGHT);
        setLayout(null);
        setBorder(BorderFactory.createLineBorder(Color.BLACK));

        initializeComponent();

        setVisible(true);
    }

    /** Initialize buttons etc **/
    private void initializeComponent() {
        // The creation of the J(ObjectName)'s
        enterUsername = new JTextField();
        enterPassword = new JPasswordField();
        login = new JButton("Login");
        username = new JLabel("Username");
        password = new JLabel("Password");

        // Size and bounds of the objects
        enterUsername.setBounds(90, 20, 100, 25);
        enterPassword.setBounds(90, 45, 100, 25);
        login.setBounds(200, 20, 75, 50);
        username.setBounds(20, 20, 100, 25);
        password.setBounds(20, 45, 100, 25);

        // Add action listeners to the buttons and textfields
        enterUsername.addFocusListener(textFieldListener);
        enterPassword.addFocusListener(textFieldListener);
        login.addActionListener(loginListener);

        // Add buttons to panel
        add(enterUsername);
        add(enterPassword);
        add(login);
        add(username);
        add(password);
    }
}