import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.util.Random;

class buttonGame
{
    public static void main(String[] args) {
        buttonGameFrame myFrame = new buttonGameFrame();
        myFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }
}

class buttonGameFrame extends JFrame implements ActionListener {
    JButton[][] buttons = new JButton[5][4];
    JPanel mPanel = new JPanel();
    JPanel bPanel = new JPanel();
    JPanel leftPanel = new JPanel();
    JPanel rightPanel = new JPanel();
    JPanel bottomPanel = new JPanel();
    JTextArea textArea = new JTextArea();
    Container c = getContentPane();
    int randomRow;
    int randomCol;
    int counter = 0;

    public buttonGameFrame() {
        buttonGenerator();
        generateRandomShot();
        changeSide();
        bPanel.setLayout(new GridLayout(5,4));
        mPanel.setLayout(new BorderLayout());
        mPanel.add(bPanel, BorderLayout.CENTER);
        mPanel.add(leftPanel, BorderLayout.WEST);
        mPanel.add(rightPanel, BorderLayout.EAST);
        bottomPanel.add(textArea);
        textArea.setText("Pozostało ruchów: 20");
        mPanel.add(bottomPanel, BorderLayout.SOUTH);
        c.add(mPanel);
        setTitle("Egzamin 25.02.2020");
        setSize(800,400);
        setLocation(200,200);
        setVisible(true);
    }

    private void buttonGenerator() {
        for(int i=0;i<5;i++)
            for(int j=0;j<4;j++) {
                buttons[i][j] = new JButton();
                buttons[i][j].setBackground(Color.yellow);
                buttons[i][j].setActionCommand("button" +i +"_" +j);
                buttons[i][j].addActionListener(this);
                bPanel.add(buttons[i][j]);
            }}

    private void generateRandomShot(){
        Random generator = new Random();
        randomRow = generator.nextInt(4);
        randomCol = generator.nextInt(3);
        System.out.println("Kolumna: " +(randomCol+1) + ", Wiersz: " + (randomRow+1));
    }

    public void changeSide(){
        if(counter%2==0) {
            leftPanel.setBackground(Color.red);
            rightPanel.setBackground(Color.white);
        } else if(counter%2!=0){
            leftPanel.setBackground(Color.white);
            rightPanel.setBackground(Color.red);
        }}

    public void actionPerformed(ActionEvent e) {
        if(e.getActionCommand().contains("button"))
        {
            int i = Integer.parseInt(Character.toString(e.getActionCommand().replaceAll("button","").replaceAll("_", "").charAt(0)));
            int j = Integer.parseInt(Character.toString(e.getActionCommand().replaceAll("button","").replaceAll("_", "").charAt(1)));
            if(j==randomCol && i==randomRow){
                JOptionPane.showMessageDialog(null, "Przegrałeś!");
                System.exit(0);
            }
            if(counter<20){
                counter++;
                changeSide();
                textArea.setText("Pozostało ruchów: " + (20-counter));
            } buttons[i][j].setBackground(Color.blue);
        }
    }
}