import java.io.*;

import java.net.*;



public class ircbot {



    public static void main(String[] args) throws Exception {



        // The server to connect to and our details.

        String server = "irc.freenode.net";

        String nick = "simple_bot";

        String login = "simple_bot";



        // The channel which the bot will join.

        String channel = "#irchacks";

        

        // Connect directly to the IRC server.

        Socket socket = new Socket(server, 6667);

        BufferedWriter writer = new BufferedWriter(

                new OutputStreamWriter(socket.getOutputStream( )));

        BufferedReader reader = new BufferedReader(

                new InputStreamReader(socket.getInputStream( )));

        

        // Log on to the server.

        writer.write("NICK " + nick + "\r\n");

        writer.write("USER " + login + " 8 * : Java IRC Hacks Bot\r\n");

        writer.flush( );

        

        // Read lines from the server until it tells us we have connected.

        String line = null;

        while ((line = reader.readLine( )) != null) {

            if (line.indexOf("004") >= 0) {

                // We are now logged in.

                break;

            }

            else if (line.indexOf("433") >= 0) {

                System.out.println("Nickname is already in use.");

                return;

            }

        }

        

        // Join the channel.

        writer.write("JOIN " + channel + "\r\n");

        writer.flush( );

        

        // Keep reading lines from the server.

        while ((line = reader.readLine( )) != null) {

            if (line.toLowerCase( ).startsWith("PING ")) {

                // We must respond to PINGs to avoid being disconnected.

                writer.write("PONG " + line.substring(5) + "\r\n");

                writer.write("PRIVMSG " + channel + " :I got pinged!\r\n");

                writer.flush( );

            }

            else {

                // Print the raw line received by the bot.

                System.out.println(line);

            }

        }

    }



}