<?php

namespace App\AlbumSources;

use App\Album;
use App\Helpers\MiscHelper;
use App\Photo;
use Symfony\Component\HttpFoundation\File\File;

class LocalFilesystemSource implements IAlbumSource
{
    private $parentFolder;

    public function __construct($parentFolder)
    {
        $this->parentFolder = $parentFolder;
    }

    public function getPathToPhoto(Album $album, Photo $photo)
    {
        return sprintf('%s/%s', $this->getPathToAlbum($album), $photo->file_name);
    }

    public function saveUploadedPhoto(Album $album, File $uploadedFile)
    {
        $tempFilename = sprintf('%s/photo_%s', $this->getPathToAlbum($album), MiscHelper::randomString(20));

        $extension = $uploadedFile->guessExtension();
        if (!is_null($extension))
        {
            $tempFilename .= '.' . $extension;
        }

        $uploadedFile->move(dirname($tempFilename), basename($tempFilename));
        return new File($tempFilename);
    }

    private function getPathToAlbum(Album $album)
    {
        return sprintf('%s/albums/%s', $this->parentFolder, $album->url_alias);
    }
}