<?php
/**
* Controller for Live stream
*/
class ControllerLive extends Controller
{
	
	protected $router;
	protected $registry;
	public function __construct($registry,$router)
    {
	$this->router 		= $router;
	$this->registry 	= $registry;
	}

	public function index(){
		$facebook = $this->settings['facebook'];
		$feed = $this->getPagePosts($facebook['fb_page_id'],$facebook['api_token'],'50');
	 	include APP_VIEWS_ROOT.'/live/live.php';	
	}


	/*/https://www.facebook.com/feeds/page.php rss feed
		*Valid formats json
	/*/
	function getPageFeed($fbid=0,$format='json'){
		//Facebook url for retriving feeds
		$url = 'https://www.facebook.com/feeds/page.php?id='.$fbid.'&format='.$format;
		//Init curl
		$c = curl_init();
		//CURL vars
		$header[0] = 'Accept: text/xml,application/xml,application/xhtml+xml,';
		$header[0] .= 'text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5';
		$header[] = 'Cache-Control: max-age=0';
		$header[] = 'Connection: keep-alive';
		$header[] = 'Keep-Alive: 300';
		$header[] = 'Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7';
		$header[] = 'Accept-Language: en-us,en;q=0.5';
		$header[] = 'Pragma: ';

		$userAgent = 'Mozilla';
		curl_setopt($c, CURLOPT_USERAGENT, $userAgent);
		curl_setopt($c, CURLOPT_URL,$url);
		curl_setopt($c, CURLOPT_FAILONERROR, true);
		curl_setopt($c, CURLOPT_FOLLOWLOCATION, true);
		curl_setopt($c, CURLOPT_HTTPHEADER, $header);
		curl_setopt($c, CURLOPT_REFERER, '');
		curl_setopt($c, CURLOPT_ENCODING, 'gzip,deflate');
		curl_setopt($c, CURLOPT_AUTOREFERER, true);
		curl_setopt($c, CURLOPT_RETURNTRANSFER,true);
		curl_setopt($c, CURLOPT_VERBOSE, false);     
	    curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
		curl_setopt($c, CURLOPT_SSL_VERIFYPEER, false);
	    curl_setopt($c, CURLOPT_SSL_VERIFYHOST, false);
		curl_setopt($c, CURLOPT_TIMEOUT, 10);
		
		$feed = curl_exec($c);
		
	switch ($format) {
		case 'json':
			$feed_decoded=json_decode($feed,true);
	 		$page_feed = $feed_decoded['entries'];
			break;
		
		default:
			$feed_decoded=json_decode($feed,true);
	 		$page_feed = $feed_decoded['entries'];
			break;
	}

	    //close the connection
	    curl_close($c);
	     
	    //return the data as an object
	    return $page_feed;

	}

	/*/Facebook Graph API
		*function to retrieve posts from facebook's server Graph API 
		*Need to provide TOKEN and page ID in config.php
	/*/
	public function getPagePosts($fbid=0,$fbtoken=0,$limit=20){
		// this is the URL that gets the data from facebook
		// the ?limit=20 tells facebook how many posts we want
		
		//must be https when using an access token
		$url="https://graph.facebook.com/v2.2/".$fbid."?access_token=".$fbtoken."&fields=posts.limit(".$limit."){full_picture,picture,message,link}";
		//load and setup CURL
		$c = curl_init($url);
		curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
		curl_setopt($c, CURLOPT_SSL_VERIFYPEER, false);
		curl_setopt($c, CURLOPT_SSL_VERIFYHOST, false);			
		//get data from facebook and decode JSON
		$page = json_decode(curl_exec($c));
		$feed = curl_exec($c);
		$feed_decoded=json_decode($feed,true);
		if(isset($feed_decoded['error'])){
			$page_feed['error'] = $feed_decoded['error']['message'];
		}else{
	 		$page_feed = $feed_decoded['posts']['data'];
	 	}
		//close the connection
		curl_close($c);
		//return the data as an object
		return $page_feed;
	}

}