import java.awt.*;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Color;
import java.util.Date;
import java.awt.Frame;
import java.awt.image.*;
import java.io.*;
import java.net.*;

public class HotLink extends java.applet.Applet implements Runnable
{
	private Thread mThread;
	private final int smImageCount=12;
	private Image[] mLedImages=new Image[smImageCount];
  private String mStrServerIP;
//	private String mURLString;
	private Button mHTTPButton;
	private Button mTelnetButton;
	private final int mTimeout=60000;
	private final String mHTTPButtonLabel=new String("Ganymede (HTTP)");
	private final String mTelnetButtonLabel=new String("Ganymede (TELNET)");

  public HotLink()
	{
	}
  public void init()
	{
    mHTTPButton=new Button(mHTTPButtonLabel);
		mTelnetButton=new Button(mTelnetButtonLabel);
		add(mHTTPButton);
		add(mTelnetButton);
		mLedImages[0]=getImage(getCodeBase(),"image/zero.gif");
		mLedImages[1]=getImage(getCodeBase(),"image/one.gif");
		mLedImages[2]=getImage(getCodeBase(),"image/two.gif");
		mLedImages[3]=getImage(getCodeBase(),"image/three.gif");
		mLedImages[4]=getImage(getCodeBase(),"image/four.gif");
		mLedImages[5]=getImage(getCodeBase(),"image/five.gif");
		mLedImages[6]=getImage(getCodeBase(),"image/six.gif");
		mLedImages[7]=getImage(getCodeBase(),"image/seven.gif");
		mLedImages[8]=getImage(getCodeBase(),"image/eight.gif");
		mLedImages[9]=getImage(getCodeBase(),"image/nine.gif");
		mLedImages[10]=getImage(getCodeBase(),"image/dash.gif");
		mLedImages[11]=getImage(getCodeBase(),"image/blank.gif");
		MediaTracker mediaTracker=new MediaTracker(this);
		for(int imageIndex=0;imageIndex<smImageCount;imageIndex++)mediaTracker.addImage(mLedImages[imageIndex],imageIndex);
		try(mediaTracker.waitForAll());
		catch(InterruptedException exception){;}
		repaint();
	}
  public void run()
	{
		while(null!=mThread)
		{
	    LocalServer localServer;
		  localServer=new LocalServer();
		  try{mStrServerIP=localServer.getServerIP(getCodeBase());}
		  catch(Exception exception){mStrServerIP=new String("255.255.255.255");}
//      mURLString=new String("http://");
//		  mURLString+=mStrServerIP;
			repaint();
			try{mThread.sleep(mTimeout);}
			catch(InterruptedException exception){break;}
		}
	}
  public void start()
	{
	  if(mThread==null){mThread=new Thread(this);mThread.start();}
	} 
	public void stop()
	{
	  if(null!=mThread){mThread.stop();mThread=null;}
	}
	public void update(Graphics graphics)
	{
	  paint(graphics);
	}
  public void paint(Graphics graphics)
  {
	  setBackground(new Color(0x2A,0x7F,0xAA));
	  drawLEDString(mStrServerIP,graphics);
  }
	public void drawLEDString(String strLED,Graphics graphics)
	{
	  int strLength=strLED.length();
		int imageWidth;
		int imageHeight;
		Point ptLoc;

    ptLoc=new Point(4,4);
		imageWidth=mLedImages[0].getWidth(this);
		imageHeight=mLedImages[0].getHeight(this);
		for(int strIndex=0;strIndex<strLength;strIndex++)
		{
		  char strChar=strLED.charAt(strIndex);

			if('0'==strChar)graphics.drawImage(mLedImages[0],ptLoc.x,ptLoc.y,this);
			else if('1'==strChar)graphics.drawImage(mLedImages[1],ptLoc.x,ptLoc.y,this);
			else if('2'==strChar)graphics.drawImage(mLedImages[2],ptLoc.x,ptLoc.y,this);
			else if('3'==strChar)graphics.drawImage(mLedImages[3],ptLoc.x,ptLoc.y,this);
			else if('4'==strChar)graphics.drawImage(mLedImages[4],ptLoc.x,ptLoc.y,this);
			else if('5'==strChar)graphics.drawImage(mLedImages[5],ptLoc.x,ptLoc.y,this);
			else if('6'==strChar)graphics.drawImage(mLedImages[6],ptLoc.x,ptLoc.y,this);
			else if('7'==strChar)graphics.drawImage(mLedImages[7],ptLoc.x,ptLoc.y,this);
			else if('8'==strChar)graphics.drawImage(mLedImages[8],ptLoc.x,ptLoc.y,this);
			else if('9'==strChar)graphics.drawImage(mLedImages[9],ptLoc.x,ptLoc.y,this);
			else if('.'==strChar)graphics.drawImage(mLedImages[10],ptLoc.x,ptLoc.y,this);
			else graphics.drawImage(mLedImages[11],ptLoc.x,ptLoc.y,this);
			ptLoc.x+=imageWidth;
		}
		graphics.setColor(new Color(48,64,0));
		graphics.drawLine(3,3,ptLoc.x,3);
		graphics.drawLine(3,3,3,imageHeight+4);
		graphics.setColor(new Color(175,192,224));
		graphics.drawLine(3,imageHeight+4,ptLoc.x,imageHeight+4);
		graphics.drawLine(ptLoc.x,3,ptLoc.x,imageHeight+4);
		graphics.setColor(new Color(96,143,208));
		graphics.drawRect(2,2,(ptLoc.x+1)-2,imageHeight+3);
		graphics.setColor(new Color(175,192,224));
		graphics.drawLine(1,1,ptLoc.x+2,1);
	}
	public boolean action(Event event,Object object)
	{
	  if(null!=mHTTPButton&&mHTTPButton==event.target)
		{
		  URL localLink;
      try{localLink=new URL("http://"+mStrServerIP);};
			catch(MalformedURLException exception){return true;}
			getAppletContext().showDocument(localLink);
		}
		else if(null!=mTelnetButton&&mTelnetButton==event.target)
		{
		  URL localLink;
			try{localLink=new URL("telnet:"+mStrServerIP);}
			catch(MalformedURLException exception){return true;}
			getAppletContext().showDocument(localLink);
		}
		return true;
	}
}