import java.util.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
@SuppressWarnings("serial")
public class Tens extends JPanel implements MouseListener, MouseMotionListener
{
    private ArrayList<Tile> tiles, selected;
    private String message;
    public static final int SIZE = 50;
    public static final int WIDTH = 500;
    public static final int HEIGHT = 500;
    public static final int GAP =3;
    private Font font;

    
    
    public void resetTiles()
    {
    	int n = 40 ; 
        tiles =  new ArrayList<Tile>(n);
        selected = new ArrayList<Tile>(2);
        message ="Remove all " + n + " tiles by clicking 2 that add up to 10, anywhere else to reset";
        for (int i = 0; i < n; i++)
        {
            // construct a new tile and add it to the tiles ArrayList
              // YOUR CODE HERE;
        	
        }
        repaint();
    }

    public Tens()  // constructor
    {
       
        message = "";
        font = new Font("NewTimesRoman", Font.BOLD, 12);
        resetTiles();
        addMouseListener(this);
        addMouseMotionListener(this);
       
    }

    public void paintComponent(Graphics g)
    {
        setBackground(new Color(125,220,200) );
        super.paintComponent(g);
        // Adjust location of boxes according to the current panel size
        int width = this.getWidth() - SIZE;
        for( int i = 0; i < tiles.size();  i++ )
        {
            Tile t = tiles.get(i);
        	int x = (i) % (width/SIZE); //column
            
            int y =  (i) / (width/SIZE); //row 
            t.setLocation(SIZE/2 + x*SIZE+x*GAP, SIZE/2 + y*SIZE+y*GAP);
            t.setColumn(x);
            t.setRow(y);
        }
        for( Tile t:tiles)
        {
            t.draw(g);
        }
        g.setColor(Color.BLACK);
        g.setFont(font);
        g.drawString(message, 20, 20);
    }

    public static void main(String[] args)
    {
        JFrame window = new JFrame();
        window.setSize(WIDTH, HEIGHT);
        Container c = window.getContentPane();
        c.add(new Tens());

        window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        window.setVisible(true);
    }
    /**
     * Precondition: there must be 2 selected tiles
     * Postcondition:  All tiles are off and selected is empty
     */
    public void remove() {
    	Tile first = selected.remove(0);
    	Tile second = selected.remove(0);
    	// Now we need to have to see if there are two selected, 
    	// that if the tiles add up to 10, they are removed, 
    	// and if they do not, message will have a error message 
    	// and all the tiles are tuned off.
    	///    
    	///  YOUR CODE HERE
    	///
        repaint();
    }
    
    public void mouseReleased(MouseEvent e) 
    {
        int x = e.getX();
        int y = e.getY();
        for(Tile t:tiles)
        {
            if (t.contains(x,y))
            { 
                // This tile has bee clicked.  
            	// If this the seconded tile, turn it on, and see if is a legal move (ie they add up to 10)
            	// otherwise turn the tile on or off, the user my be deselecting a tile 
            	int numSelected = selected.size();
            	if( numSelected == 0 ) {
            		t.on();
            		selected.add(t);
            	} else if(numSelected == 1) {
            		if(t ==selected.get(0) ) {
            			selected.remove(t);
            			t.off();
            		} else {
            			selected.add(t);
            			remove();
            		}
            	}
                
            	repaint();
                return;
            }
        }
        // If user didn't click on a tile, we reset the game
        resetTiles();
        repaint();
    }
   
    public void mousePressed(MouseEvent e) { }

    public void mouseEntered(MouseEvent e) { }

    public void mouseExited(MouseEvent e) { }

    public void mouseClicked(MouseEvent e) { }

	public void mouseDragged(MouseEvent e) {}

	public void mouseMoved(MouseEvent e) 
	{ // hilight a tile if mouse is hovering
		int x=e.getX();
		int y=e.getY();
		//message = "("+x+", "+y+")";
		for(Tile t: tiles)
			t.setHighlight(t.contains(x, y)) ;
		repaint();
	}
}