gnu-social/modules/Favorite/lib/popularnoticestream.php

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<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social 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.
//
// GNU social 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 GNU social. If not, see <http://www.gnu.org/licenses/>.
/**
* Stream of notices sorted by popularity
*
* @category Popular
* @package GNUsocial
* @author Evan Prodromou <evan@status.net>
* @copyright 2011 StatusNet, Inc.
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
defined('GNUSOCIAL') || die();
/**
* Stream of notices sorted by popularity
*
* @category Popular
* @package GNUsocial
* @author Evan Prodromou <evan@status.net>
* @copyright 2011 StatusNet, Inc.
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class PopularNoticeStream extends ScopingNoticeStream
{
public function __construct(Profile $scoped=null)
{
parent::__construct(
new CachingNoticeStream(
new RawPopularNoticeStream(),
'popular',
false
),
$scoped
);
}
}
class RawPopularNoticeStream extends NoticeStream
{
public function getNoticeIds($offset, $limit, $since_id, $max_id)
{
$weightexpr = common_sql_weight(
'modified',
common_config('popular', 'dropoff')
);
$cutoff = sprintf(
"modified > CURRENT_TIMESTAMP - INTERVAL '%d' SECOND",
common_config('popular', 'cutoff')
);
$fave = new Fave();
$fave->selectAdd();
$fave->selectAdd('notice_id');
$fave->selectAdd("{$weightexpr} AS weight");
$fave->whereAdd($cutoff);
$fave->groupBy('notice_id');
$fave->orderBy('weight DESC');
if (!is_null($offset)) {
$fave->limit($offset, $limit);
}
// FIXME: $since_id, $max_id are ignored
$ids = array();
if ($fave->find()) {
while ($fave->fetch()) {
$ids[] = $fave->notice_id;
}
}
return $ids;
}
}