gjerokrsteski/pimf-framework

<?php
/**
 * Pimf
 *
 * @copyright Copyright (c)  Gjero Krsteski (http://krsteski.de)
 * @license   http://opensource.org/licenses/MIT MIT License
 */

namespace Pimf\Session\Storages;

use Pimf\Contracts\Cleanable;

/**
 * @package Session_Storages
 * @author  Gjero Krsteski <gjero@krsteski.de>
 */
class Dba extends Storage implements Cleanable
{
    /**
     * @var \Pimf\Cache\Storages\Dba
     */
    private $dba;

    /**
     * @param \Pimf\Cache\Storages\Dba $dba
     */
    public function __construct(\Pimf\Cache\Storages\Dba $dba)
    {
        $this->dba = $dba;
    }

    /**
     * Load a session from storage by a given ID.
     *
     * @param string $key
     *
     * @return array|mixed
     */
    public function load($key)
    {
        return $this->dba->get($key);
    }

    /**
     * Save a given session to storage.
     *
     * @param array $session
     * @param array $config
     * @param bool  $exists
     */
    public function save($session, $config, $exists)
    {
        $this->dba->put($session['id'], $session, $config['lifetime']);
    }

    /**
     * @param string $key
     */
    public function delete($key)
    {
        $this->dba->forget($key);
    }

    /**
     * Delete all expired sessions from persistent storage.
     *
     * @param int $expiration
     *
     * @return mixed|void
     */
    public function clean($expiration)
    {
        $this->dba->clean();

        if (filemtime($this->dba->getFile()) < $expiration) {
            $this->dba->flush();
        }
    }
}