import java.awt.Button;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import javax.swing.JFrame;
import javax.swing.JPanel;


public class KnightTourApp extends JPanel implements MouseListener, MouseMotionListener, ActionListener
{
    public static int WIDTH=600;
    public static int HEIGHT=600;
    private Font titleFont, regularFont;
    private String message;
    private Button resetButton; 
    private int moves;
    private ChessBoard board;
    public static final int SIZE=60;
    public static final int DIMENSION=6;

    public KnightTourApp()
    {

        //initialize variables here...
        titleFont = new Font("Roman", Font.BOLD, 18);
        regularFont = new Font("Helvetica", Font.PLAIN, 12);
        //Setup Mouse listening:
        addMouseListener(this);
        addMouseMotionListener(this);
        //Setup Reset Button:
        resetButton = new Button("   Start   ");
        resetButton.addActionListener(this);
        add(resetButton);

        //Set up variables
        message="Vist Each and Every Square Once";
        moves=0;
        board = new ChessBoard(DIMENSION, SIZE, 50, 70);
    }
    public static void main(String[] args) {
        KnightTourApp app= new KnightTourApp();
        JFrame window = new JFrame("Knight's Tour");
        window.setSize(WIDTH, HEIGHT);
        window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        window.getContentPane().add(app);
        window.addMouseMotionListener(app);
        window.setVisible(true);
    }
    public void paintComponent(Graphics g){
        super.paintComponent(g);
        g.setColor(Color.WHITE);
        g.fillRect(0, 0, getWidth(),getHeight());
        g.setColor(Color.MAGENTA);
        g.setFont(titleFont);
        g.drawString("Knight's Tour", 20, 20);
        g.setColor(Color.BLACK);
        g.setFont(regularFont);
        g.drawString(message, 20, 40);
        g.setColor(Color.BLUE);
        board.draw(g);

    }
    
    /**
     * These are the Methods needed to implement the  Interfaces
     */

    public void mouseDragged(MouseEvent e) {


    }
    public void mouseMoved(MouseEvent e) {
        int x=e.getX();
        int y=e.getY();
        if (board.contains(x, y)){
            board.hoverOver(x,y);
            repaint();
        }
    }
    public void actionPerformed(ActionEvent e) {
        // resetButton pressed
        message=" 0 moves";
        moves=0;
        resetButton.setLabel("Start Over");
        board = new ChessBoard(DIMENSION, SIZE, 50, 70);
        repaint();

    }
    public void mouseClicked(MouseEvent e) {}
    public void mousePressed(MouseEvent e) {}
    public void mouseReleased(MouseEvent e) {
        int x=e.getX();
        int y=e.getY();
        if (board.contains(x, y)){
            board.clickOn(x,y);
            repaint();
        }
    }
    public void mouseEntered(MouseEvent e) {}
    public void mouseExited(MouseEvent e) {}



}