/**
 * Write a description of class UI here.
 *
 * @author (your name)
 * @version (a version number or a date)
 */
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.JScrollPane;
import java.awt.CardLayout;
import java.text.*;
import java.io.*;
import javax.swing.table.DefaultTableModel;

public class UI implements ItemListener
{
    JPanel cards;
    final static String BUTTONPANEL = "View Inventory";
    final static String TEXTPANEL = "Add Inventory";
    final static String LOGIN = "Login";
    final static String CASHIERMODE = "Cashier Mode";
    String passwordM = "manager";
    String passwordC = "cashier";
    String itemName = "";
    String priceNum = "";
    String quantityNum = "";
    DefaultTableModel tableSet;
    public void addComponentToPane(Container pane)
    {
        JPanel comboBoxPane = new JPanel();
        JTabbedPane tabbedPane = new JTabbedPane();
        JButton add = new JButton("ADD");
        JButton login = new JButton("LOGIN");
        JButton sell = new JButton("SELL");

        JTextField item = new JTextField("", 20);
        JTextField price = new JTextField("", 20);
        JTextField quantity = new JTextField("", 20);

        JTextField user = new JTextField("", 20);
        JTextField pass = new JPasswordField("", 20);

        JPanel card = new JPanel();

        String comboBoxItems[] = {BUTTONPANEL, TEXTPANEL, LOGIN};
        JComboBox cb = new JComboBox(comboBoxItems);
        cb.setEditable(false);
        cb.addItemListener(this);
        comboBoxPane.add(cb);

        //creating the card
        card.add(new Label("Login: "));
        card.add(user);
        card.add(pass);
        card.add(login);

        JPanel card1 = new JPanel();
        //creating the Jtable
        String[] columns = new String[] {
                "Item", "Price", "Quantity"
            };
        //actual data for the table in a 2d array
        Object[][] data = new Object[][] {
            };
        //create table with dataNum
        tableSet = new DefaultTableModel(data, columns);
        JTable table = new JTable(tableSet);
        JTable table1 = new JTable(tableSet);
        //add the table to the frame
        card1.add(new JScrollPane(table));
        card1.setVisible(true);

        JPanel card2 = new JPanel();
        card2.add(new JLabel("ITEM"));
        card2.add(item);
        card2.add(new JLabel("PRICE"));
        card2.add(price);
        card2.add(new JLabel("QUANTITY"));
        card2.add(quantity);
        card2.add(add);

        JPanel card3 = new JPanel();
        card3.add(new JLabel("Quantity"));
        card3.add(new JTextField("",20));
        card3.add(sell);

        card3.add(new JScrollPane(table1));
        card3.setVisible(true);

        tabbedPane.addTab(LOGIN, card);

        login.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    String username = user.getText();

                    String passName = pass.getText();
                    if(passName.equals(passwordM))
                    {
                        card.add(new JLabel("Welcome manager!"));
                        user.setText("");
                        pass.setText("");
                        tabbedPane.addTab(BUTTONPANEL, card1);
                        tabbedPane.addTab(TEXTPANEL, card2);
                        tabbedPane.addTab(CASHIERMODE, card3);
                    }
                    else if(passName.equals(passwordC))
                    {
                        card.add(new JLabel("Welcome cashier!"));
                        user.setText("");
                        pass.setText("");
                        tabbedPane.addTab(CASHIERMODE, card3);
                    }
                    else
                    {
                        card.add(new JLabel("Username/Password is invalid."));
                        user.setText("");
                        pass.setText("");
                    }

                }
            } );
        add.addActionListener(new ActionListener(){
                public void actionPerformed(ActionEvent e){
                    itemName = item.getText();
                    priceNum = price.getText();
                    quantityNum= quantity.getText();
                    tableSet.addRow(new String[] {itemName, priceNum, quantityNum});
                    item.setText("");
                    price.setText("");
                    quantity.setText("");
                    Double.parseDouble(priceNum);
                    Integer.parseInt(quantityNum);
                    inventoryUpdate(itemName, priceNum, quantityNum);

                }
            } );

        sell.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {

                }
            } );
        pane.add(tabbedPane, BorderLayout.CENTER);
    }

    public void itemStateChanged(ItemEvent evt) {
        CardLayout cl = (CardLayout)(cards.getLayout());
        cl.show(cards, (String)evt.getItem());
    }

    public void inventoryUpdate(String name, double price, int quantity)
    {
        try{
        File file = new File("inventory.txt");
        //FileWriter writer = new FileWriter(file);
       // writer.append(name + ""+ price + "" + quantity);}
        catch(Exception e)
        {}
    }

    private static void createAndShowGUI() {
        //Create and set up the window.
        JFrame frame = new JFrame("Retail");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        //Create and set up the content pane.
        UI demo = new UI();

        //Display the window.
        frame.pack();
        frame.setSize(500,500);
        frame.setVisible(true);

        demo.addComponentToPane(frame.getContentPane());
        //display
        frame.pack();
        frame.setVisible(true);
    }

    public static void main(String[] args)
    {

        try {

            UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
        } catch (UnsupportedLookAndFeelException ex) {
            ex.printStackTrace();
        } catch (IllegalAccessException ex) {
            ex.printStackTrace();
        } catch (InstantiationException ex) {
            ex.printStackTrace();
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        }
        /* Turn off metal's use of bold fonts */
        UIManager.put("swing.boldMetal", Boolean.FALSE);

        //Schedule a job for the event dispatch thread:
        //creating and showing this application's GUI.
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
                public void run() {
                    createAndShowGUI();
                }
            });
    }

}