<?php

/*
 * IRCConnection.
 * This is the main IRC connection class, and holds
 * all IRC related functions.
 */
class IRCConnection {


	/*
	 * Connect( Server , Port , Nickname ).
	 * This is the intial connection function, which connects
	 * to the given IRC server on the specified port. This needs
	 * to be called once before any further connection progress is
	 * made.
	 * 
	 * This function should also be considered as the initializer
	 * as to some degree it sets things up for the rest of usage, 
	 * i.e. Server, Port and Nickname.
	 */
	function Connect($Server, $Port, $tmpNickname) {

		/* Define these vatiables globally, so they can be read/written anywhere. */
		global $Connection, $ConnectionStatus, $Nickname;
		
		/* Enable unlimited execution time, so php doesn't kill our connection. */
		set_time_limit(0);

		/* Create a new socket connection to the server on the given port. */
		$Connection			=	fsockopen($Server, $Port);

		/* Setup a variable to hold our connection status. */
		$ConnectionStatus		=	1;

		$Nickname			=	$tmpNickname;

	}


	/*
	 * Recieve().
	 * This function recieves data from our server, once the connection has been mad.e
	 */
	function Recieve() {

		global $Connection, $ConnectionStatus, $Nickname;

		/* Assign our recieved data to a vatiable. */
		$Message			=	fgets($Connection, 512);

		/* Run a regexp to respond to PING / PONG. */
		if (preg_match('/PING :/', $Message)) {

			/* Replace PING with PONG. */
			$PingPong = str_replace('PING', 'PONG', $Message);

			/* Send back our modified PING packet. */
			fputs($Connection, $PingPong."\n\r");
		}
	
		/* Check to see what our connection status is. */
		if ($ConnectionStatus == 1) {

			/* Send USER and NICK command to complete our connection. */
			fputs($Connection, "USER " . $Nickname . " localhost localhost :Daves Bot\n\r");
			$this->SetNickname($Nickname);

			/* Update Connection status. */
			$ConnectionStatus	=	2;
		}
	
		/* Return the raw connection data, so the user can add their own matches. */
		return $Message;

	}


	/*
	 * JoinChannel( Channel to join ).
	 * Joins the specified IRC channel. Simple, eh ?
	 */
	function JoinChannel($Channel) {

		global $Connection, $ConnectionStatus;

		/* Send a join packet to join a channel.  - OPTIONALLY part of the connect process. */
		fputs($Connection, "JOIN ".$Channel."\n\r");

		/* Update connection status. */
		$ConnectionStatus		=	4;

	}

	
	/*
	 * SetNickname( New Nickname ).
	 * Set the nickname for the client, can be called after connection to set nickname!
	 */
	function SetNickname($Nickname) {
		global $Connection, $ConnectionStatus;

		/* Send nickname packet. */
		fputs($Connection, "NICK " . $Nickname ."\n\r");

	}


	/*
	 * SendPrivMessage( Recipient , Message ).
	 * Send the desired message to the specified recipent.
	 */
	function SendPrivMessage($To, $Message) {
		global $Connection, $ConnectionStatus;

		fputs($Connection, "PRIVMSG " . $To . " :" . $Message ."\n\r");

	}


	/*
	 * SendChannelMessage( Recipient , Message ).
	 * Send the desired message to the specified recipent.
	 */
	function SendChannelMessage($Channel, $Massage) {
		global $Connection, $ConnectionStatus;

		fputs($Connection, "PRIVMSG " . $Channel . " " . $Massage . "\n\r");

	}


}
?>