package snake;

import java.applet.Applet;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.ArrayList;
import java.util.Random;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author laudeleo
 */
public class MinAppletKlass extends Applet implements KeyListener, Runnable {

    Image dbImage;  //deklarerar en Image variabel dit en osynlig kopia av applet-grafiken sparas
    Graphics dbg;   //deklarerar Graphics variabel dit alla grafik-egenskaper för appleten sparas
    Snake mySnake;
    Random r = new Random();
    int bredd = 10;
    int hojd = 10;
    ExecutorService tg = Executors.newCachedThreadPool();
    //ArrayList<Snake> enemysnakes = new ArrayList<Snake>();
    ArrayList<Food> food = new ArrayList<Food>();

    public void init() {
        mySnake = new Snake(r.nextInt(50) * 10, r.nextInt(50) * 10, 10, 10, this, food, tg, mySnake);
        addKeyListener(this);
        //enemysnakes.add(new Snake(0, 5, 50, 15, this, food, tg));
        for (int i = 0; i < 10; i++) {
            food.add(new Food(r.nextInt(50) * 10, r.nextInt(50) * 10, 9, 9, this));
        }

        Future grafikTrad = tg.submit(this);
    }

    public void update(Graphics g) {
        //Initialiserar den osynliga kopian av grafiken
        if (dbImage == null) {
            //skapar en tom "image" med samma storlek som innevarande applet
            dbImage = createImage(this.getSize().width, this.getSize().height);
            //hämtar grafikegenskaper
            dbg = dbImage.getGraphics();
        }

        //Tömmer skämen i bakgrunden
        dbg.setColor(getBackground());
        dbg.fillRect(0, 0, this.getSize().width, this.getSize().height);

        //Ritar grafiken pånytt i bakgrunden
        dbg.setColor(getForeground());
        paint(dbg);

        //Ritar den uppdaterade bilden på bildskärmen
        g.drawImage(dbImage, 0, 0, this);

    }

    public void paint(Graphics g) //Hit kommer alla utritningsfunktioner
    {
        // Ritar ut rutfältets bakgrundsfärg
        g.setColor(Color.LIGHT_GRAY);
        g.fillRect(2, 2, 560, 560);

        // Ritar ut rutfältet
        g.setColor(Color.black);
        for (int i = 0; i < 56; i++) {
            for (int j = 0; j < 56; j++) {
                g.drawRect(bredd * i, hojd * j, bredd, hojd);
            }
        }

        // Ritar ut äpplen
        for (int i = 0; i < food.size(); i++) {
            g.setColor(Color.RED);
            g.fillOval(food.get(i).x, food.get(i).y, food.get(i).bredd, food.get(i).hojd);
        }

        // Ritar ut scoreboard
        g.setColor(Color.BLACK);
        g.drawString("Score Board", 655, 140);

        g.setColor(Color.GRAY);
        g.drawRect(610, 150, 165, 300);

        // Mysnake resultat på scoreboard
        g.setColor(Color.blue);
        g.fillRect(630, 180, 10, 10);
        g.drawString(Integer.toString(mySnake.linkl.size() - 1), 645, 190);

        // Ritar ut antalet äppel kvar på scoreboard
        g.setColor(Color.red);
        g.fillOval(630, 300, 10, 10);
        g.drawString(Integer.toString(food.size()), 645, 310);

        //if (mySnake.linkl.isEmpty() == false) {
            for (int i = 0; i < mySnake.linkl.size(); i++) {
                g.setColor(Color.BLUE);
                g.fillRect(mySnake.linkl.get(i).x, mySnake.linkl.get(i).y, mySnake.linkl.get(i).hojd, mySnake.linkl.get(i).hojd);

            }
        //}
    }

    public void keyTyped(KeyEvent e) {
    }

    public void keyPressed(KeyEvent e) {
    }

    public void keyReleased(KeyEvent e) {

        if (e.getKeyCode() == KeyEvent.VK_LEFT) {
            mySnake.direction = 'l';
        } else if (e.getKeyCode() == KeyEvent.VK_RIGHT) {
            mySnake.direction = 'r';
        } else if (e.getKeyCode() == KeyEvent.VK_DOWN) {
            mySnake.direction = 'd';
        } else if (e.getKeyCode() == KeyEvent.VK_UP) {
            mySnake.direction = 'u';
        }
    }

   boolean crash() {
        if (mySnake.snakeCrash()) {
            for (int i = 0; i < mySnake.linkl.size() - 1; i++) {
                food.add(new Food(r.nextInt(50), r.nextInt(50), 9, 9, this));
            }
        }
        return false;
    }

    public void run() {

        while (true) {
            try {
                mySnake.snakeMovements();
                mySnake.snakeEat();
                mySnake.snakeRespawn();
                crash();
                repaint();
                Thread.sleep(90);
            } catch (InterruptedException ex) {
                Logger.getLogger(MinAppletKlass.class.getName()).log(Level.SEVERE, null, ex);
            }
        }
    }
}