gnu-social/actions/apiconversation.php

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2011-07-16 01:49:52 +09:00
<?php
/**
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2011, StatusNet, Inc.
*
* Show a stream of notices in a particular conversation
*
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* PHP version 5
*
* 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 Evan Prodromou <evan@status.net>
* @copyright 2011 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
* @link http://status.net/
*/
if (!defined('STATUSNET')) {
// This check helps protect against security problems;
// your code file can't be executed directly from the web.
exit(1);
}
/**
* Show a stream of notices in a particular conversation
*
* @category API
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @copyright 2011 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPL 3.0
* @link http://status.net/
*/
class ApiconversationAction extends ApiAuthAction
{
protected $conversation = null;
protected $notices = null;
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/**
* For initializing members of the class.
*
* @param array $argarray misc. arguments
*
* @return boolean true
*/
function prepare($argarray)
{
parent::prepare($argarray);
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$convId = $this->trimmed('id');
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if (empty($convId)) {
// TRANS: Client exception thrown when no conversation ID is given.
throw new ClientException(_('No conversation ID.'));
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}
$this->conversation = Conversation::getKV('id', $convId);
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if (empty($this->conversation)) {
// TRANS: Client exception thrown when referring to a non-existing conversation ID (%d).
throw new ClientException(sprintf(_('No conversation with ID %d.'), $convId),
404);
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}
$stream = new ConversationNoticeStream($convId, $this->scoped);
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$notice = $stream->getNotices(($this->page-1) * $this->count,
$this->count,
$this->since_id,
$this->max_id);
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$this->notices = $notice->fetchAll();
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return true;
}
/**
* Handler method
*
* @param array $argarray is ignored since it's now passed in in prepare()
*
* @return void
*/
function handle($argarray=null)
{
$sitename = common_config('site', 'name');
// TRANS: Title for conversion timeline.
$title = _m('TITLE', 'Conversation');
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$id = common_local_url('apiconversation', array('id' => $this->conversation->id, 'format' => $this->format));
$link = common_local_url('conversation', array('id' => $this->conversation->id));
$self = $id;
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switch($this->format) {
case 'xml':
$this->showXmlTimeline($this->notices);
break;
case 'rss':
$this->showRssTimeline(
$this->notices,
$title,
$link,
null,
null,
null,
$self
);
break;
case 'atom':
header('Content-Type: application/atom+xml; charset=utf-8');
$atom = new AtomNoticeFeed($this->auth_user);
$atom->setId($id);
$atom->setTitle($title);
$atom->setUpdated('now');
$atom->addLink($link);
$atom->setSelfLink($self);
$atom->addEntryFromNotices($this->notices);
$this->raw($atom->getString());
break;
case 'json':
$this->showJsonTimeline($this->notices);
break;
case 'as':
header('Content-Type: ' . ActivityStreamJSONDocument::CONTENT_TYPE);
$doc = new ActivityStreamJSONDocument($this->auth_user);
$doc->setTitle($title);
$doc->addLink($link, 'alternate', 'text/html');
$doc->addItemsFromNotices($this->notices);
$this->raw($doc->asString());
break;
default:
// TRANS: Client error displayed when coming across a non-supported API method.
$this->clientError(_('API method not found.'), $code = 404);
break;
}
}
/**
* Return true if read only.
*
* MAY override
*
* @param array $args other arguments
*
* @return boolean is read only action?
*/
function isReadOnly($args)
{
if ($_SERVER['REQUEST_METHOD'] == 'GET' ||
$_SERVER['REQUEST_METHOD'] == 'HEAD') {
return true;
} else {
return false;
}
}
/**
* Return last modified, if applicable.
*
* MAY override
*
* @return string last modified http header
*/
function lastModified()
{
if (!empty($this->notices) && (count($this->notices) > 0)) {
return strtotime($this->notices[0]->created);
}
return null;
}
/**
* Return etag, if applicable.
*
* MAY override
*
* @return string etag http header
*/
function etag()
{
if (!empty($this->notices) && (count($this->notices) > 0)) {
$last = count($this->notices) - 1;
return '"' . implode(
':',
array($this->arg('action'),
common_user_cache_hash($this->auth_user),
common_language(),
$this->user->id,
strtotime($this->notices[0]->created),
strtotime($this->notices[$last]->created))
)
. '"';
}
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return null;
}
/**
* Does this require authentication?
*
* @return boolean true if delete, else false
*/
function requiresAuth()
{
if ($_SERVER['REQUEST_METHOD'] == 'GET' ||
$_SERVER['REQUEST_METHOD'] == 'HEAD') {
return false;
} else {
return true;
}
}
}