import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.*;
import java.util.Random;

/**
 * Created by Onur on 23.01.2015.
 */
public class Oblig13GUI extends JFrame implements ActionListener {

    private JButton btn1 = new JButton("Legg til vare");
    private JButton btn2 = new JButton("Slett vare");
    private JButton btn3 = new JButton("Åpne beholdningen");
    private JButton btn4 = new JButton("Lagre beholdningen");
    public static DefaultListModel liste = new DefaultListModel();
    public JList jList = new JList(liste);
    private JScrollPane jscrollPane = new JScrollPane(jList);


    public Oblig13GUI() {

        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setSize(01320, 0x2d0);
        this.addWindowListener(new WindowAdapter() {

            public void windowOpened(WindowEvent e) {
                try {
                    openFile();
                } catch (Exception e1) {

                    e1.printStackTrace();
                }
            }

            public void windowClosing(WindowEvent e) {
                try {
                    writeFile();
                } catch (Exception e1) {
                    e1.printStackTrace();
                }
            }
        });

        this.setLayout(new FlowLayout());
        addButtons();

        this.setVisible(true);
    }

    public void addButtons() {

        this.add(btn1);
        this.add(btn2);
        this.add(btn3);
        this.add(btn4);
        btn1.addActionListener(this);
        btn2.addActionListener(this);
        btn3.addActionListener(this);
        btn4.addActionListener(this);
        jscrollPane.setPreferredSize(new Dimension(495, 320));
        this.add(jscrollPane);
    }

    @Override
    public void actionPerformed(ActionEvent e) {

        if (e.getSource().equals(btn1)) {
            System.out.println(btn2.getText());
            String itemName = JOptionPane.showInputDialog(this, "Item Name: ");

            if (!itemName.equals("")) {
                int itemPrice = Integer.parseInt(JOptionPane.showInputDialog(this, "Item Price: "));
                String itemLocation = JOptionPane.showInputDialog(this, "Item Location: ");
                liste.addElement(new Oblig13Vare(itemName, itemLocation, itemPrice));
            } else {
                int c = new Random().nextInt(3);
                if (c == 1)
                    liste.addElement(new Oblig13Vare("Asus n550jk", "A30", 5400));
                else if (c == 2) {
                    liste.addElement(new Oblig13Vare("Lenovo y50", "A31", 8000));
                } else {

                    liste.addElement(new Oblig13Vare("Macbook 2014", "A32", 15030));

                }
            }


        } else if (e.getSource().equals(btn2)) {
            System.out.println(btn2.getText());
            try {
                liste.remove(jList.getSelectedIndex());
            } catch (Exception e1) {
                System.out.println("Could not remove item from array. Did you select an item?");
            }

        } else if (e.getSource().equals(btn3)) {
            System.out.println(btn3.getText());
            openFile();
        } else if (e.getSource().equals(btn4)) {
            System.out.println(btn4.getText());
            writeFile();

        }

    }

    private void openFile() {

        try {
            FileInputStream fos = new FileInputStream(new File("inventory.txt"));
            ObjectInputStream oos = new ObjectInputStream(fos);

            liste = (DefaultListModel) oos.readObject();
            jList.setModel(liste);

        } catch (IOException e) {
            e.printStackTrace();
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        }

    }

    private void writeFile() {
        try {
            FileOutputStream fos = new FileOutputStream("inventory.txt");
            ObjectOutputStream oos = new ObjectOutputStream(fos);

            oos.writeObject(liste);
            oos.close();


        } catch (IOException e) {
            e.printStackTrace();
        }
    }


}