<?php

namespace App\AlbumSources;

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

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

    /**
     * @var string
     */
    private $parentFolder;

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

    public function deleteAlbumContents()
    {
        $this->recursiveDelete($this->getPathToAlbum());
    }

    public function deleteThumbnail(Photo $photo, $thumbnail = null)
    {
        return unlink($this->getPathToPhoto($photo, $thumbnail));
    }

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

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

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

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

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

        return $photoUrl;
    }

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

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

    private function recursiveDelete($directory)
    {
        $result = scandir($directory);
        foreach ($result as $file)
        {
            if ($file == '.' || $file == '..')
            {
                continue;
            }

            $fullPath = sprintf('%s/%s', $directory, $file);

            if (is_dir($fullPath))
            {
                $this->recursiveDelete($fullPath);
            }
            else
            {
                unlink($fullPath);
            }
        }

        rmdir($directory);
    }
}