package cspspserver;

import java.net.* ;
import java.io.* ;
import java.util.* ;

class CSPSPServer
{
   private static List<String> playerList = new ArrayList<String>();
   private static String send = "";

   private static String serverName = "NAME";
   private static String serverMap = "MAP";
   private static char numPlayers = 0;
   private static char maxPlayers = 32;

   private static char sp = 0;

   public static void main(String[] args) throws Exception
   {
       // Set IP to 127.0.0.1 for testing, change this later I suppose :(
       InetAddress ia = InetAddress.getByName("192.168.1.101");

       // Create UDP Server Socket brah :B
       DatagramSocket serverSocket = new DatagramSocket(42692);

       // Summa dat data brah :B
       byte[] receiveData = new byte[1024];
       byte[] sendData= new byte[1024];

       // Check to see if the socket was created successfully
       if (serverSocket.isBound())
           System.out.println("Server was successfully started!");
       else
           System.out.println("Server couldn't start D:!");

       // Loop
       while (true)
       {
           // Create a receiving packet and receive any data that is incoming...
           DatagramPacket receivePacket = new DatagramPacket(receiveData, receiveData.length);
           serverSocket.receive(receivePacket);

           String data = new String(receivePacket.getData(), 0, receivePacket.getLength());

           //data = stripData(data);

           InetAddress IPAddress = receivePacket.getAddress();
           int port = receivePacket.getPort();

           parseData(data, IPAddress.toString(), port);
           System.out.println(stringToHex(data));
           sendData = send.getBytes();
           DatagramPacket sendPacket = new DatagramPacket(sendData, sendData.length, IPAddress, port);
           serverSocket.send(sendPacket);
           data = "";
       }
   }

   private static String stripData(String data)
   {
       data = data.substring(0, data.indexOf(0));
       return data;
   }

   private static void parseData(String data, String IP, int port)
   {
       if (data.charAt(0) == 37) //equals("%" + (char)(1))) // Pinged...
       {
           // Reply format is
           // % SERVERNAME MAP NUMPLAYERS MAXPLAYERS
           // % (02) (00) (length of server name + 1) SERVER NAME (00) (length of map name + 1) MAP NAME (00) (NUM PLAYERS) (MAX PLAYERS)
           System.out.println("You were pinged by " + IP + ":" + port);

           send = "%" + (char)(2) + sp + (char)(serverName.length() + 1) + serverName + sp + (char)(serverMap.length() + 1) + serverMap + sp + (char)(numPlayers) + (char)(maxPlayers);
           System.out.println(send);
       }
       else
       {
           // NAME on enter and leave
           System.out.println(data + " connected to the server.");
           send = "dtadfag";
           //playerList.add(data + " : " + IP + port);
       }
   }

   private static String stringToHex(String str)
   {
        char[] chars = str.toCharArray();
        StringBuffer strBuffer = new StringBuffer();
        for (int i = 0; i < chars.length; i++) {
        strBuffer.append(Integer.toHexString((int) chars[i]) + " ");
        }
        return strBuffer.toString();
  }
}