/**
 * Copyright 2006 Jeffrey Palm.  
 * 
 * This is GPLed, don't use it to fly airplanes.
 */

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

public class DarthAcc {

  public static void main(String[] args) {
    try {
      new DarthAcc().realMain(args);
    } catch (Exception e) {handle(e);}
  }

  static void handle(Exception e) {e.printStackTrace();}

  public void realMain(String[] args) throws Exception {

    // Default options
    String ams = "/Applications/AMSTracker";

    // Read the arguments
    for (int i=0; i<args.length;) {
      String arg = args[i++];
      if ("-help".equals(arg)) {
        System.err.println("java " + getClass().getName() + " [-help | -ams <path to AMSTracker>]");
        System.exit(0);
      } else if ("-ams".equals(arg)) {
        ams = args[i++];
      } else {
        System.err.println("Invalid argument: " + arg);
      }
    }

    // Launch the tater
    JFrame f = new JFrame();
    final Image darth = Toolkit.getDefaultToolkit().getImage(getClass().getClassLoader().getSystemResource("DarthAcc.jpg"));
    final Point pnt = new Point();
    final int acc[] = new int[2]; // x,y directions
    final JPanel p = new JPanel() {
        {this.setBackground(Color.white);}
        public void paint(Graphics g) {
          g.setColor(Color.white);
          g.fillRect(0,0,getWidth(),getHeight());
          g.drawImage(darth,(int)pnt.getX(),(int)pnt.getY(),Color.white,this);
          g.setColor(Color.black);
          g.drawString("x,y:" + ((int)pnt.getX()) + "," + ((int)pnt.getY()),getWidth()-100,getHeight()-60);
          g.drawString("acc:" + acc[0] + "," + acc[1],getWidth()-100,getHeight()-30);
        }
      };
    f.getContentPane().add(p);
    p.setPreferredSize(new Dimension(700,700));
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.pack();
    f.setVisible(true);

    // Start the process
    String[] cmd = {ams, "-u", ".1", "-s"};
    Process proc  = Runtime.getRuntime().exec(cmd);
    final BufferedReader in = new BufferedReader(new InputStreamReader(proc.getInputStream()));
    final boolean[] going = new boolean[]{true};
    Thread t = new Thread(new Runnable() {
        public void run() {
          while (going[0]) {
            try {
              String line = in.readLine();
              if (line.indexOf("AMS") != -1) continue;
              StringTokenizer st = new StringTokenizer(line," \n\t\r",false);
              int x = Integer.parseInt(st.nextToken().trim());
              int y = Integer.parseInt(st.nextToken().trim());
              System.err.println("x="+x + "," + "y="+y);
              acc[0] = -x;
              acc[1] =  y;
              pnt.translate(acc[0],acc[1]);
              p.repaint();
            } catch (Exception e) {handle(e);}
          }
        }
      });
    t.start();
    proc.waitFor();
    going[0] = false;
    proc.exitValue();
    t.join();
  }

}