<?php

namespace App\AlbumSources;

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

/**
 * Driver for managing files on the local filesystem.
 * @package App\AlbumSources
 */
class LocalFilesystemSource implements IAlbumSource
{
    private $parentFolder;

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

    public function getOriginalsFolder()
    {
        return '_originals';
    }

    public function getPathToPhoto(Album $album, Photo $photo, $thumbnail = null)
    {
        if (is_null($thumbnail))
        {
            $thumbnail = $this->getOriginalsFolder();
        }

        return sprintf('%s/%s/%s', $this->getPathToAlbum($album), $thumbnail, $photo->file_name);
    }

    public function getUrlToPhoto(Album $album, Photo $photo, $thumbnail = null)
    {
        $photoUrl = route('downloadPhoto', [
            'albumUrlAlias' => $album->url_alias,
            'photoFilename' => $photo->file_name
        ]);

        if (!is_null($thumbnail))
        {
            $photoUrl .= sprintf('?t=%s', urlencode($thumbnail));
        }

        return $photoUrl;
    }

    public function saveThumbnail(Album $album, Photo $photo, $thumbnailInfo, $tempFilename)
    {
        $fileInfo = new File($tempFilename);
        $fileInfo->move(sprintf('%s/%s', $this->getPathToAlbum($album), $thumbnailInfo['name']), $photo->file_name);
    }

    public function saveUploadedPhoto(Album $album, File $uploadedFile)
    {
        $tempFilename = sprintf('%s/%s/%s', $this->getPathToAlbum($album), $this->getOriginalsFolder(), 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/%s', $this->parentFolder, $album->url_alias);
    }
}