<?php
/*Import Friends from Flickr.com
 * You can send private message using Flickr system to your Friends
 */
$_pluginInfo=array(
	'name'=>'Flickr',
	'version'=>'1.0.8',
	'description'=>"Get the contacts from a Flickr account",
	'base_version'=>'1.8.0',
	'type'=>'social',
	'check_url'=>'http://www.flickr.com',
	'requirement'=>'email',
	'allowed_domains'=>false,
	);
/**
 * Flickr Plugin
 * 
 * Imports user's contacts from Flickr and send messages
 * using Flickr's internal system
 * 
 * @author OpenInviter
 * @version 1.0.2
 */
class flickr extends openinviter_base
	{
	private $login_ok=false;
	public $showContacts=true;
	public $internalError=false;
	protected $timeout=30;
	
	public $debug_array=array(
				'ini_get'=>'login.yahoo',
				'login_post'=>'window.location.replace(',
				'redirect_cookie'=>'magic_cookie',
				'frinds_page'=>'Who',
				'send_message_url'=>'magic_cookie',
				);
	
	/**
	 * Login function
	 * 
	 * Makes all the necessary requests to authenticate
	 * the current user to the server.
	 * 
	 * @param string $user The current user.
	 * @param string $pass The password for the current user.
	 * @return bool TRUE if the current user was authenticated successfully, FALSE otherwise.
	 */
	public function login($user,$pass)
		{
		$this->resetDebugger();
		$this->service='flickr';
		$this->service_user=$user;
		$this->service_password=$pass;
		if (!$this->init()) return false;
		
		$res=$this->get("http://www.flickr.com/signin/",true);
		if ($this->checkResponse("ini_get",$res))
			$this->updateDebugBuffer('ini_get',"http://www.flickr.com/signin/",'GET');
		else
			{
			$this->updateDebugBuffer('ini_get',"http://www.flickr.com/signin/",'GET',false);
			$this->debugRequest();
			$this->stopPlugin();
			return false;
			}
		
		$form_action="https://login.yahoo.com/config/login?";
		$post_elements=$this->getHiddenElements($res);$post_elements["save"]="Sign In";$post_elements['login']=$user;$post_elements['passwd']=$pass;
		$res=$this->post($form_action,$post_elements,true);
		if ($this->checkResponse("login_post",$res))
			$this->updateDebugBuffer('login_post',$form_action,'POST',true,$post_elements);
		else
			{
			$this->updateDebugBuffer('login_post',$form_action,'POST',false,$post_elements);	
			$this->debugRequest();
			$this->stopPlugin();
			return false;
			}
		
		$url_redirect=$this->getElementString($res,'window.location.replace("','"');
		$res=$this->get($url_redirect,true);
		if ($this->checkResponse("redirect_cookie",$res))
			$this->updateDebugBuffer('redirect_cookie',$url_redirect,'GET');
		else
			{
			$this->updateDebugBuffer('redirect_cookie',$url_redirect,'GET',false);
			$this->debugRequest();
			$this->stopPlugin();
			return false;
			}
			
		$url_friends="http://www.flickr.com/people/".$this->getElementString("$res",'<span><a href="/photos/','"')."contacts/?see=friends";
		
		$this->login_ok=$url_friends;
		return true;
		}

	/**
	 * Get the current user's contacts
	 * 
	 * Makes all the necesarry requests to import
	 * the current user's contacts
	 * 
	 * @return mixed The array if contacts if importing was successful, FALSE otherwise.
	 */	
	public function getMyContacts()
		{
		if (!$this->login_ok)
			{
			$this->debugRequest();
			$this->stopPlugin();
			return false; 
			}
		else $url=$this->login_ok;
		$res=$this->get($url);
		
		if ($this->checkResponse("frinds_page",$res))
			$this->updateDebugBuffer('frinds_page',$url,'GET');
		else
			{
			$this->updateDebugBuffer('frinds_page',$url,'GET',false);
			$this->debugRequest();
			$this->stopPlugin();
			return false;
			}
			
		$contacts=array();
		$doc=new DOMDocument();libxml_use_internal_errors(true);if (!empty($res)) $doc->loadHTML($res);libxml_use_internal_errors(false);
		$xpath=new DOMXPath($doc);$query="//a[@rel='contact']";$data=$xpath->query($query);
		foreach($data as $node)
			{
			if (strpos($node->getAttribute('title'),'photos')!==false)
				{
				$name=$node->nodeValue;
				$id=str_replace('/','',str_replace('/photos/','',(string)$node->getAttribute('href')));
				if (!empty($name)) $contacts[$id]=$name;
				}
			} 
		return $contacts;
		}

	/**
	 * Send message to contacts
	 * 
	 * Sends a message to the contacts using
	 * the service's inernal messaging system
	 * 
	 * @param string $session_id The OpenInviter user's session ID
	 * @param string $message The message being sent to your contacts
	 * @param array $contacts An array of the contacts that will receive the message
	 * @return mixed FALSE on failure.
	 */
	public function sendMessage($session_id,$message,$contacts)
		{
		$countMessages=0;
		foreach($contacts as $id=>$name)
			{
			$countMessages++;
			$url_send_message="http://www.flickr.com/messages_write.gne?to={$id}";
			$res=$this->get($url_send_message);
			if ($this->checkResponse("send_message_url",$res))
				$this->updateDebugBuffer('send_message_url',$url_send_message,'GET');
			else
				{
				$this->updateDebugBuffer('send_message_url',$url_send_message,'GET',false);
				$this->debugRequest();
				$this->stopPlugin();
				return false;
				}
			$form_action="http://www.flickr.com/messages_write.gne";
			$post_elements=array("magic_cookie"=>$this->getElementString($res,'name="magic_cookie" value="','"'),
								 "to"=>$this->getElementString($res,'name="to" value="','"'),
								 "to_nsid"=>$this->getElementString($res,'name="to_nsid" value="','"'),
								 "reply"=>"",
								 "done"=>1,
								 "subject"=>$message['subject'],
								 "message"=>$message['body']
								);
			$res=$this->post($form_action,$post_elements);
			sleep($this->messageDelay);
			if ($countMessages>$this->maxMessages) {$this->debugRequest();$this->resetDebugger();$this->stopPlugin();break;}
			}
		}

	/**
	 * Terminate session
	 * 
	 * Terminates the current user's session,
	 * debugs the request and reset's the internal 
	 * debudder.
	 * 
	 * @return bool TRUE if the session was terminated successfully, FALSE otherwise.
	 */	
	public function logout()
		{		
		if (!$this->checkSession()) return false;
		$res=$this->get("http://www.flickr.com/"); 
		$logout_url="http://www.flickr.com/logout.gne?magic_cookie=".$this->getElementString($res,'/logout.gne?magic_cookie=','"');
		$res=$this->get($logout_url);
		$res=$this->get("http://login.yahoo.com/config/login?logout=1&.intl=us&.done=http://us.yahoo.com");
		$this->debugRequest();
		$this->resetDebugger();
		$this->stopPlugin();
		return true;
			
		}
	}
	
?>