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<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Plugin
* @package StatusNet
* @author Brion Vibber <brion@status.net>
* @copyright 2010 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
// A single stream connection
abstract class TwitterStreamReader extends JsonStreamReader
{
protected $callbacks = array();
function __construct(TwitterOAuthClient $auth, $baseUrl)
{
$this->baseUrl = $baseUrl;
$this->oauth = $auth;
}
public function connect($method)
{
$url = $this->oAuthUrl($this->baseUrl . '/' . $method);
return parent::connect($url);
}
/**
* Sign our target URL with OAuth auth stuff.
*
* @param string $url
* @param array $params
* @return string
*/
function oAuthUrl($url, $params=array())
{
// In an ideal world this would be better encapsulated. :)
$request = OAuthRequest::from_consumer_and_token($this->oauth->consumer,
$this->oauth->token, 'GET', $url, $params);
$request->sign_request($this->oauth->sha1_method,
$this->oauth->consumer, $this->oauth->token);
return $request->to_url();
}
/**
* Add an event callback. Available event names include
* 'raw' (all data), 'friends', 'delete', 'scrubgeo', etc
*
* @param string $event
* @param callable $callback
*/
public function hookEvent($event, $callback)
{
$this->callbacks[$event][] = $callback;
}
/**
* Call event handler callbacks for the given event.
*
* @param string $event
* @param mixed $arg1 ... one or more params to pass on
*/
public function fireEvent($event, $arg1)
{
if (array_key_exists($event, $this->callbacks)) {
$args = array_slice(func_get_args(), 1);
foreach ($this->callbacks[$event] as $callback) {
call_user_func_array($callback, $args);
}
}
}
function handleJson(array $data)
{
$this->routeMessage($data);
}
abstract function routeMessage($data);
/**
* Send the decoded JSON object out to any event listeners.
*
* @param array $data
* @param int $forUserId
*/
function handleMessage(array $data, $forUserId=null)
{
$this->fireEvent('raw', $data, $forUserId);
if (isset($data['id']) && isset($data['text']) && isset($data['user'])) {
$this->fireEvent('status', $data);
}
$knownMeta = array('friends', 'delete', 'scrubgeo', 'limit', 'event', 'direct_message');
foreach ($knownMeta as $key) {
if (isset($data[$key])) {
$this->fireEvent($key, $data[$key], $forUserId);
}
}
}
}
class TwitterSiteStream extends TwitterStreamReader
{
protected $userIds;
public function __construct(TwitterOAuthClient $auth, $baseUrl='https://stream.twitter.com')
{
parent::__construct($auth, $baseUrl);
}
public function connect($method='2b/site.json')
{
return parent::connect($method);
}
function followUsers($userIds)
{
$this->userIds = $userIds;
}
/**
* Each message in the site stream tells us which user ID it should be
* routed to; we'll need that to let the caller know what to do.
*
* @param array $data
*/
function routeMessage($data)
{
parent::handleMessage($data['message'], $data['for_user']);
}
}
class TwitterUserStream extends TwitterStreamReader
{
public function __construct(TwitterOAuthClient $auth, $baseUrl='https://userstream.twitter.com')
{
parent::__construct($auth, $baseUrl);
}
public function connect($method='2/user.json')
{
return parent::connect($method);
}
/**
* Each message in the user stream is just ready to go.
*
* @param array $data
*/
function routeMessage($data)
{
parent::handleMessage($data, $this->userId);
}
}
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