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+<?php
+/**
+ * StatusNet, the distributed open-source microblogging tool
+ *
+ * Show the public timeline
+ *
+ * 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 API
+ * @package StatusNet
+ * @author Craig Andrews <candrews@integralblue.com>
+ * @author Evan Prodromou <evan@status.net>
+ * @author Jeffery To <jeffery.to@gmail.com>
+ * @author mac65 <mac65@mac65.com>
+ * @author Mike Cochrane <mikec@mikenz.geek.nz>
+ * @author Robin Millette <robin@millette.info>
+ * @author Zach Copley <zach@status.net>
+ * @copyright 2009 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/
+ */
+
+if (!defined('STATUSNET')) {
+ exit(1);
+}
+
+require_once INSTALLDIR . '/lib/apiprivateauth.php';
+
+/**
+ * Returns the most recent notices (default 20) posted by everybody
+ *
+ * @category API
+ * @package StatusNet
+ * @author Craig Andrews <candrews@integralblue.com>
+ * @author Evan Prodromou <evan@status.net>
+ * @author Jeffery To <jeffery.to@gmail.com>
+ * @author mac65 <mac65@mac65.com>
+ * @author Mike Cochrane <mikec@mikenz.geek.nz>
+ * @author Robin Millette <robin@millette.info>
+ * @author Zach Copley <zach@status.net>
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link http://status.net/
+ */
+
+class ApiTimelinePublicAction extends ApiPrivateAuthAction
+{
+
+ var $notices = null;
+
+ /**
+ * Take arguments for running
+ *
+ * @param array $args $_REQUEST args
+ *
+ * @return boolean success flag
+ *
+ */
+
+ function prepare($args)
+ {
+ parent::prepare($args);
+
+ $this->notices = $this->getNotices();
+
+ return true;
+ }
+
+ /**
+ * Handle the request
+ *
+ * Just show the notices
+ *
+ * @param array $args $_REQUEST data (unused)
+ *
+ * @return void
+ */
+
+ function handle($args)
+ {
+ parent::handle($args);
+ $this->showTimeline();
+ }
+
+ /**
+ * Show the timeline of notices
+ *
+ * @return void
+ */
+
+ function showTimeline()
+ {
+ $sitename = common_config('site', 'name');
+ $title = sprintf(_("%s public timeline"), $sitename);
+ $taguribase = common_config('integration', 'taguri');
+ $id = "tag:$taguribase:PublicTimeline";
+ $link = common_root_url();
+ $subtitle = sprintf(_("%s updates from everyone!"), $sitename);
+
+ switch($this->format) {
+ case 'xml':
+ $this->showXmlTimeline($this->notices);
+ break;
+ case 'rss':
+ $this->showRssTimeline($this->notices, $title, $link, $subtitle);
+ break;
+ case 'atom':
+ $selfuri = common_root_url() . 'api/statuses/public_timeline.atom';
+ $this->showAtomTimeline(
+ $this->notices, $title, $id, $link,
+ $subtitle, null, $selfuri
+ );
+ break;
+ case 'json':
+ $this->showJsonTimeline($this->notices);
+ break;
+ default:
+ $this->clientError(_('API method not found!'), $code = 404);
+ break;
+ }
+ }
+
+ /**
+ * Get notices
+ *
+ * @return array notices
+ */
+
+ function getNotices()
+ {
+ $notices = array();
+
+ $notice = Notice::publicStream(
+ ($this->page - 1) * $this->count, $this->count, $this->since_id,
+ $this->max_id, $this->since
+ );
+
+ while ($notice->fetch()) {
+ $notices[] = clone($notice);
+ }
+
+ return $notices;
+ }
+
+ /**
+ * Is this action read only?
+ *
+ * @param array $args other arguments
+ *
+ * @return boolean true
+ */
+
+ function isReadOnly($args)
+ {
+ return true;
+ }
+
+ /**
+ * When was this feed last modified?
+ *
+ * @return string datestamp of the latest notice in the stream
+ */
+
+ function lastModified()
+ {
+ if (!empty($this->notices) && (count($this->notices) > 0)) {
+ return strtotime($this->notices[0]->created);
+ }
+
+ return null;
+ }
+
+ /**
+ * An entity tag for this stream
+ *
+ * Returns an Etag based on the action name, language, and
+ * timestamps of the first and last notice in the timeline
+ *
+ * @return string etag
+ */
+
+ function etag()
+ {
+ if (!empty($this->notices) && (count($this->notices) > 0)) {
+
+ $last = count($this->notices) - 1;
+
+ return '"' . implode(
+ ':',
+ array($this->arg('action'),
+ common_language(),
+ strtotime($this->notices[0]->created),
+ strtotime($this->notices[$last]->created))
+ )
+ . '"';
+ }
+
+ return null;
+ }
+
+}