<?php
declare(strict_types=1);

namespace Esun\FileManager\Model;

use Magento\Framework\File\Uploader;

class FileUploader extends Uploader
{
    /**
     * Preserve safe Unicode file names prepared by Filename.
     *
     * @param string|null $fileName
     * @return string
     * @throws \InvalidArgumentException
     */
    public static function getCorrectFileName($fileName)
    {
        $fileName = is_string($fileName) ? ltrim($fileName, '.') : '';
        if ($fileName === '' || strlen($fileName) > 255
            || !preg_match('/^[\p{L}\p{N}._-]+\.[a-z0-9]+$/u', $fileName)
            || str_contains($fileName, '..')
        ) {
            throw new \InvalidArgumentException((string) __('The generated file name is invalid.'));
        }

        return $fileName;
    }
}