gnu-social/plugins/SlicedFavorites/actions/favoritedslice.php
2020-08-10 19:29:04 +03:00

152 lines
4.3 KiB
PHP

<?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/>.
/**
* List of popular notices
*
* @category Public
* @package GNUsocial
* @author Zach Copley <zach@status.net>
* @author Evan Prodromou <evan@status.net>
* @copyright 2008-2009 StatusNet, Inc.
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
defined('GNUSOCIAL') || die();
class FavoritedSliceAction extends FavoritedAction
{
private $includeUsers = [];
private $excludeUsers = [];
/**
* Take arguments for running
*
* @param array $args $_REQUEST args
*
* @return boolean success flag
*
* @todo move queries from showContent() to here
*/
public function prepare(array $args = [])
{
parent::prepare($args);
$this->slice = $this->arg('slice', 'default');
$data = array();
if (Event::handle('SlicedFavoritesGetSettings', array($this->slice, &$data))) {
// TRANS: Client exception.
throw new ClientException(_m('Unknown favorites slice.'));
}
if (isset($data['include'])) {
$this->includeUsers = $data['include'];
}
if (isset($data['exclude'])) {
$this->excludeUsers = $data['exclude'];
}
return true;
}
/**
* Content area
*
* Shows the list of popular notices
*
* @return void
*/
public function showContent()
{
$slice = $this->sliceWhereClause();
if (!$slice) {
return parent::showContent();
}
$weightexpr = common_sql_weight('fave.modified', common_config('popular', 'dropoff'));
$cutoff = sprintf(
"fave.modified > CURRENT_TIMESTAMP - INTERVAL '%d' SECOND",
common_config('popular', 'cutoff')
);
$offset = ($this->page - 1) * NOTICES_PER_PAGE;
$limit = NOTICES_PER_PAGE + 1;
$qry = <<<END
SELECT *
FROM notice INNER JOIN (
SELECT notice.id, {$weightexpr} AS weight
FROM notice
INNER JOIN fave ON notice.id = fave.notice_id
WHERE {$cutoff} AND {$slice}
GROUP BY notice.id
) AS t1 USING (id)
ORDER BY weight DESC
LIMIT {$limit} OFFSET {$offset};
END;
$notice = Memcached_DataObject::cachedQuery('Notice', $qry, 600);
$nl = new NoticeList($notice, $this);
$cnt = $nl->show();
if ($cnt == 0) {
$this->showEmptyList();
}
$this->pagination(
$this->page > 1,
$cnt > NOTICES_PER_PAGE,
$this->page,
'favorited'
);
}
private function sliceWhereClause()
{
$include = $this->nicknamesToIds($this->includeUsers);
$exclude = $this->nicknamesToIds($this->excludeUsers);
$sql = [];
if (count($include) > 0) {
$sql[] = 'notice.profile_id IN (' . implode(',', $include) . ')';
}
if (count($exclude) > 0) {
$sql[] = 'notice.profile_id NOT IN (' . implode(',', $exclude) . ')';
}
return implode(' AND ', $sql) ?: false;
}
/**
*
* @param array $nicks array of user nicknames
* @return array of profile/user IDs
*/
private function nicknamesToIds($nicks)
{
$ids = array();
foreach ($nicks as $nick) {
// not the most efficient way for a big list!
$user = User::getKV('nickname', $nick);
if ($user) {
$ids[] = intval($user->id);
}
}
return $ids;
}
}