Kylob/BootPress

<?php

namespace BootPress\Upload;

use BootPress\Page\Component as Page;
use FileUpload\FileNameGenerator\FileNameGenerator;
use FileUpload\FileSystem\FileSystem;
use FileUpload\FileUpload;
use FileUpload\PathResolver\PathResolver;
use FileUpload\Util;
use URLify;

class FileName implements FileNameGenerator
{
    /**
     * Pathresolver.
     *
     * @var PathResolver
     */
    private $pathresolver;

    /**
     * Filesystem.
     *
     * @var FileSystem
     */
    private $filesystem;

    /**
     * Get file_name.
     *
     * @param string     $source_name
     * @param string     $type
     * @param string     $tmp_name
     * @param int        $index
     * @param string     $content_range
     * @param FileUpload $upload
     *
     * @return string
     */
    public function getFileName($source_name, $type, $tmp_name, $index, $content_range, FileUpload $upload)
    {
        $this->filesystem = $upload->getFileSystem();
        $this->pathresolver = $upload->getPathResolver();

        return $this->getUniqueFilename($source_name, $type, $index, $content_range);
    }

    /**
     * Get unique but consistent name.
     *
     * @param string $name
     * @param string $type
     * @param int    $index
     * @param array  $content_range
     *
     * @return string
     */
    protected function getUniqueFilename($name, $type, $index, $content_range)
    {
        $page = Page::html();
        $path = pathinfo(strtolower($name));
        $name = md5($page->session->id()); // 32 char string
        $name .= URLify::filter($path['filename'], 60, '', true);
        $name .= '.'.$path['extension'];

        while ($this->filesystem->isDir($this->pathresolver->getUploadPath($name))) {
            $name = $this->pathresolver->upcountName($name);
        }

        $uploaded_bytes = Util::fixIntegerOverflow(intval($content_range[1]));

        while ($this->filesystem->isFile($this->pathresolver->getUploadPath($name))) {
            if ($uploaded_bytes == $this->filesystem->getFilesize($this->pathresolver->getUploadPath($name))) {
                break;
            }

            $name = $this->pathresolver->upcountName($name);
        }

        return $name;
    }
}