<?php
namespace app\service\driver;



use think\App;
use think\session\driver\File;

/**
 * 自定义session file 驱动器
 *
 * 用于修复TP 自带file驱动器bug
 *
 * Class sessionFile
 * @package app\service\driver
 */
class SessionFile extends File
{

    public function __construct(App $app, array $config = [])
    {
        parent::__construct($app, $config);
    }


    /**
     * bug v20220302 error: SplFileInfo::getMTime(): stat failed for filePath(xxx)
     * 修复此函数
     *
     * Session 垃圾回收
     * @access public
     * @return void
     */
    public function gc(): void
    {
        $lifetime = $this->config['expire'];
        $now      = time();

        $files = $this->findFiles($this->config['path'], function (\SplFileInfo $item) use ($lifetime, $now) {
            // 添加文件是否存在判断
            if (!$item->isFile()) {
                return false;
            }

            return $now - $lifetime > $item->getMTime();
        });

        foreach ($files as $file) {
            $this->unlink($file->getPathname());
        }
    }

    /**
     * 重构unlink方法
     *
     * 判断文件是否存在后,删除
     *
     * @access private
     * @param string $file
     * @return bool
     */
    protected function unlink(string $file): bool
    {
        return is_file($file) && unlink($file);
    }
}