promotions/ese09/cacheCheck.php

<?php
require_once("nest_functions.php");

if( $_GET['debug'] == 'true' ){
	echo 'turning on error reporting<br>';
	error_reporting(255);
}

global $birdsnestdata;

	// Check Cached Followers Feed

	if(file_exists($birdsnestdata->writable_path . 'followers.data')){
		$modtime = filemtime ($birdsnestdata->writable_path . 'followers.data');
		$now = time();
		if ($now - $modtime > 120  or $_GET['debug'] == 'true'){
			$followersCount = getCacheFollowers("http://".$birdsnestdata->twitter_account.":".$birdsnestdata->twitter_pass."@twitter.com/statuses/followers.xml", $birdsnestdata->writable_path);
		}
	}else{
		$followersCount = getCacheFollowers("http://".$birdsnestdata->twitter_account.":".$birdsnestdata->twitter_pass."@twitter.com/statuses/followers.xml", $birdsnestdata->writable_path);
	}
	
	// Check Cached Tweeter Data
	if (file_exists($birdsnestdata->writable_path . 'lastID')) // Check to see if file exists
	{
		$modtime = filemtime ($birdsnestdata->writable_path . 'lastID'); // Check to see when it was last modified
		$now = time();
		if ($now - $modtime > 120 or  $_GET['debug'] == 'true'){ // More then 5 minutes have passed, we need to check for updates
			//Open tweetData File for writing
			$statusDataHandle = fopen($birdsnestdata->writable_path . 'tweetstatus.data', 'r');  
			$statusData = fread($statusDataHandle, filesize($birdsnestdata->writable_path . 'tweetstatus.data'));
			$statusData = unserialize($statusData);

			fclose ($statusDataHandle);
			
			//Open lastID File for keeping things moving
			$lastIDHandle = fopen ($birdsnestdata->writable_path . 'lastID', 'w');
			$lastID = fread($lastIDHandle, 128);
			$searchURL = "http://".$birdsnestdata->twitter_account.":".$birdsnestdata->twitter_pass."@twitter.com/statuses/replies.xml";
			// We use last ID to make sure were getting only things that we havent parsed yet.
			if ($lastID != ""){
				$searchURL .= '&since_ID='.$lastID;
			}
			
			//Now lets get the data from twitter
			$newLastID = getCacheReplies($searchURL, $statusData, $birdsnestdata->writable_path);
			if ($newLastID != $lastID){ // If lastID has changed then we need to save things
				fwrite ($lastIDHandle, $newLastID);
			}else{
				fwrite ($lastIDHandle, $lastID);
			}
			
			//Close File handles 
			fclose ($lastIDHandle);
		}
	}else{
		//Since the file doesnt exist lets create them
		$lastIDHandle = fopen ($birdsnestdata->writable_path . 'lastID', 'w+');
		
		//Now lets get the data from twitter
		$searchURL = "http://".$birdsnestdata->twitter_account.":".$birdsnestdata->twitter_pass."@twitter.com/statuses/replies.xml?since_ID=1336792232";

		//Now lets get the data from twitter
		$statusData = array();		
		$lastID = getCacheReplies($searchURL, $statusData, $birdsnestdata->writable_path);
		fwrite ($lastIDHandle, $lastID);
		
		//Close File handles 
		fclose ($lastIDHandle);	
	}
	
	function getCacheFollowers($url, $writable) {
		global $birdsnestdata;
		// Function to build a followers file that has more then 100 entries
		$followers = @file_get_contents($url);
		$xml = @simplexml_load_string($followers);
		
		$followersArray = array();
		$count = 0;
		$masterCount = 0;
		$pageCount = 2; //start at 2
		while (1 and sizeof($xml->user)) {
			foreach($xml->user as $user){
				$screen_name = $user->screen_name;
				$followersArray[(string)$screen_name]['description'] = (string)$user->description;
				$followersArray[(string)$screen_name]['profile_image_url'] = (string)$user->profile_image_url;
				$count++;
			}
			if ($count == 100){
				$masterCount += $count;	
				$count = 0;
				$followers = @file_get_contents($url . '?page='. $pageCount);
				$xml = @simplexml_load_string($followers);
				$pageCount++;
			}elseif(sizeof($followersArray)){
				$handle = fopen ($writable . 'followers.data','w+');
				fwrite ($handle, serialize($followersArray));
				fclose($handle);
				break;
			}
		}	
	}
	
	function getCacheReplies($replyurl, &$statusArray,  $writable){
		global $birdsnestdata;
		// Function to build a followers file that has more then 100 entries
		
	if($_GET['debug'] == 'true'){
		print $replyurl."<br>";
	}
		
		$replies = file_get_contents($replyurl);
		$xml = @simplexml_load_string($replies);
		if ($xml->status[0]->id != NULL){
			$lastID = $xml->status[0]->id;
			$count = 0;
			$masterCount = 0;
			$pageCount = 2; //start at 2
			
			
			
			while (1) {
				foreach($xml->status as $status){
					if($_GET['debug'] == 'true'){
						print_pre($status);
					}
					
					$screen_name = $status->user->screen_name;
					$text = $status->text;
					$findConfHash = stripos($text, '#'.$birdsnestdata->twitter_hash);
					
					if ($findConfHash !== FALSE){	
						//We found twitter hash tag, now lets check for other role tags
						$findSpeaker = stripos($text, '#session');
						$findExhibitor = stripos($text, '#exhibitor');
						$findAttendee = stripos($text, '#attendee');
						if ($findSpeaker !== FALSE){
							$url = substr($text, stripos($text, 'http://'), strlen($text));
							if (strpos($url, ' ') != 0)
								$url = substr($url, 0, strpos($url, ' '));
							$url = trim($url, '[]');
							$statusArray[(string)$screen_name]['role'] = "Speaker";
							$statusArray[(string)$screen_name]['url'] = $url;	
							
						}elseif ($findExhibitor !== FALSE){
							$statusArray[(string)$screen_name]['role'] = "Exhibitor";
						}elseif ($findAttendee !== FALSE){
							$statusArray[(string)$screen_name]['role'] = "Attendee";
						}
					}				
					$count++;
				}
				if ($count == 20){
					$masterCount += $count;	
					$count = 0;
					$replies = @file_get_contents($replyurl . '&page='. $pageCount);
					$xml = @simplexml_load_string($replies);
					$pageCount++;
				}else{
					$handle = fopen ($writable . 'tweetstatus.data','w+');
					fwrite ($handle, serialize($statusArray));
					fclose($handle);
					break;
				}
			}
		}
		return $lastID;			
	}
?>