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<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2016, Roeland Jago Douma <roeland@famdouma.nl>
*
* @author Roeland Jago Douma <roeland@famdouma.nl>
*
* @license GNU AGPL version 3 or any later version
*
* 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/>.
*
*/
namespace OCA\PreviewGenerator\Listeners;
use OCP\EventDispatcher\Event;
use OCP\EventDispatcher\IEventListener;
use OCP\Files\Events\Node\NodeWrittenEvent;
use OCP\Files\Folder;
use OCP\IDBConnection;
use OCP\IUserManager;
class PostWriteListener implements IEventListener {
/** @var IDBConnection */
private $connection;
/** @var IUserManager */
private $userManager;
public function __construct(IDBConnection $connection,
IUserManager $userManager) {
$this->connection = $connection;
$this->userManager = $userManager;
}
public function handle(Event $event): void {
if (!($event instanceof NodeWrittenEvent)) {
return;
}
$node = $event->getNode();
$absPath = ltrim($node->getPath(), '/');
$owner = explode('/', $absPath)[0];
if ($node instanceof Folder || !$this->userManager->userExists($owner)) {
return;
}
$qb = $this->connection->getQueryBuilder();
$qb->select('id')
->from('preview_generation')
->where(
$qb->expr()->andX(
$qb->expr()->eq('uid', $qb->createNamedParameter($owner)),
$qb->expr()->eq('file_id', $qb->createNamedParameter($node->getId()))
)
)->setMaxResults(1);
$cursor = $qb->execute();
$inTable = $cursor->fetch() !== false;
$cursor->closeCursor();
// Don't insert if there is already such an entry
if ($inTable) {
return;
}
$qb = $this->connection->getQueryBuilder();
$qb->insert('preview_generation')
->setValue('uid', $qb->createNamedParameter($owner))
->setValue('file_id', $qb->createNamedParameter($node->getId()));
$qb->execute();
}
}
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