<?php

namespace App\AlbumSources;

use App\Album;
use App\Photo;
use App\Services\BackblazeB2Service;
use App\Storage;
use Guzzle\Http\EntityBody;

class BackblazeB2Source extends AlbumSourceBase implements IAlbumSource
{
    /**
     * @var BackblazeB2Service
     */
    private $backblaze;

    public function __construct()
    {
        $this->backblaze = new BackblazeB2Service();
    }

    /**
     * Deletes an entire album's media contents.
     * @return void
     */
    public function deleteAlbumContents()
    {
        // TODO: Implement deleteAlbumContents() method.
    }

    /**
     * Deletes a thumbnail file for a photo.
     * @param Photo $photo Photo to delete the thumbnail from.
     * @param string $thumbnail Thumbnail to delete (or null to delete the original.)
     * @return void
     */
    public function deleteThumbnail(Photo $photo, $thumbnail = null)
    {
        // TODO: Implement deleteThumbnail() method.
    }

    /**
     * Fetches the contents of a thumbnail for a photo.
     * @param Photo $photo Photo to fetch the thumbnail for.
     * @param string $thumbnail Thumbnail to fetch (or null to fetch the original.)
     * @return EntityBody
     */
    public function fetchPhotoContent(Photo $photo, $thumbnail = null)
    {
        // TODO: Implement fetchPhotoContent() method.
    }

    /**
     * Gets the name of this album source.
     * @return string
     */
    public function getName()
    {
        return 'global.album_sources.backblaze_b2';
    }

    /**
     * Gets the absolute URL to the given photo file.
     * @param Photo $photo Photo to get the URL to.
     * @param string $thumbnail Thumbnail to get the image to.
     * @return string
     */
    public function getUrlToPhoto(Photo $photo, $thumbnail = null)
    {
        // TODO: Implement getUrlToPhoto() method.
    }

    /**
     * Saves a generated thumbnail to its permanent location.
     * @param Photo $photo Photo the image relates to.
     * @param string $tempFilename Filename containing the image.
     * @param string $thumbnail Name of the thumbnail (or null for the original.)
     * @return mixed
     */
    public function saveThumbnail(Photo $photo, $tempFilename, $thumbnail = null)
    {
        $pathOnStorage = $this->getPathToPhoto($photo, $thumbnail);

        $this->getClient()->uploadFile($tempFilename, $pathOnStorage);
    }

    public function setConfiguration(Storage $configuration)
    {
        parent::setConfiguration($configuration);

        $this->backblaze->setCredentials(decrypt($configuration->access_key), decrypt($configuration->secret_key));
    }

    private function getClient()
    {
        $this->backblaze->authorizeAccount();
        $this->backblaze->setBucketName($this->configuration->container_name);

        return $this->backblaze;
    }

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

    private function getPathToPhoto(Photo $photo, $thumbnail = null)
    {
        return sprintf(
            '%s/%s/%s',
            $this->album->url_alias,
            is_null($thumbnail) ? $this->getOriginalsFolder() : $thumbnail,
            $photo->storage_file_name
        );
    }
}