<?php


/*
 * a twitter bot. deal with it. 
 * Copyright (C) 2008 Andrew Jaswa (http://andrewjaswa.com)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

/* 
 *
 * Config
 *
 * 
*/

$scrapeUrl	=	"http://www.example.com"; // Url to scrape

$userAgent	=	"Twitter Bot 0.1 http://andrewjaswa.com/twitter-bot/"; // User agent. You should set up a page to infom people of what you are doing with your bot. 

$dlRange	=	"0"; // How much would you like to download in bytes? Leave 0 for everthing. put in 123-333 fir a range. Doesn't work on all servers see: http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.5

$up			=	"user:password"; // The twitter user and password you want to update. Format: user:password

$sUrl		=	"http://shortna.me/"; // url that gets appented to your tweet.

$statusUrl	=	"http://twitter.com/statuses/user_timeline.json?count=1"; // I'm using json because its easy and fast.

$updateUrl	=	"http://twitter.com/statuses/update.json";
/* 
 * Grab the site
*/ 
if (function_exists('curl_init') && $scrapeUrl) {
	$ch = curl_init($scrapeUrl);
	curl_setopt($ch, CURLOPT_USERAGENT, $userAgent); 
	curl_setopt($ch, CURLOPT_GET, true); 
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	curl_setopt($ch, CURLOPT_RANGE, $dlRange); 
	
	$content = curl_exec($ch);
	curl_close($ch);

	if ($content !== false && $content !== '' ){ 
		/*
		 * this is where your tweet is. 
		 *
		*/ 
		//this finds the content you want to pull out of the page in this case it will grab the title of the html document. 
		preg_match("/<\s*title[^>]*>(.+)<\/title/", $content, $matches);
		$tweet = $matches[1]." - ".$sUrl;

		$session = curl_init($statusUrl);
		curl_setopt($session, CURLOPT_USERAGENT, $userAgent); 
		curl_setopt($session, CURLOPT_RETURNTRANSFER, true);
		curl_setopt($session, CURLOPT_FAILONERROR, true);
		curl_setopt($session, CURLOPT_GET, true);
		curl_setopt($session, CURLOPT_USERPWD, $up);
		curl_setopt($session, CURLOPT_CONNECTTIMEOUT, 5);
		curl_setopt($session, CURLOPT_TIMEOUT, 10);
		$stream = curl_exec($session);
		curl_close($session);

		$fromTwitter = json_decode($stream, true);
		$curlPost = "status=".$tweet;
		if ($tweet != $fromTwitter[0]['text']){
			$session = curl_init($updateUrl);
			curl_setopt($session, CURLOPT_USERAGENT, $userAgent); 
			curl_setopt($session, CURLOPT_RETURNTRANSFER, true);
			curl_setopt($session, CURLOPT_FAILONERROR, true);
			curl_setopt($session, CURLOPT_POST, true);
			curl_setopt($session, CURLOPT_USERPWD, $up);
			curl_setopt($session, CURLOPT_CONNECTTIMEOUT, 5);
			curl_setopt($session, CURLOPT_TIMEOUT, 10);
			curl_setopt($session, CURLOPT_POSTFIELDS, $curlPost); 
			$stream = curl_exec($session);
			curl_close($session);
		}
	} elseif( $content === false ) {
		
		// fail message 
		echo "The bot failed. ";
	} elseif( $content == '' ) {
		// empty
		echo "No content was returned.";
	}
}
?>