<?php

/**
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; under version 2
 * of the License (non-upgradable).
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * Copyright (c) 2014-2020 (original work) Open Assessment Technologies SA;
 */

declare(strict_types=1);

namespace oat\taoMediaManager\model\fileManagement;

use oat\generis\model\fileReference\FileReferenceSerializer;
use oat\oatbox\filesystem\FileSystemService;
use oat\oatbox\service\ConfigurableService;
use oat\taoMediaManager\model\MediaService;
use core_kernel_classes_Triple as Triple;

class FileSourceSerializer extends ConfigurableService
{

    private const FILE_PREFIX = 'file://';

    public function serialize(Triple $triple): void
    {
        if (
            $triple->predicate === MediaService::PROPERTY_LINK
            && strpos($triple->object, self::FILE_PREFIX) === false
        ) {
            $fileObject = $this->getFileSystemService()
                ->getDirectory($this->getFlySystemManagement()->getOption(FlySystemManagement::OPTION_FS))
                ->getFile($triple->object);
            $file = $this->getFileRefSerializer()->serialize($fileObject);
            $triple->object = $file;
        }
    }

    private function getFileSystemService(): FileSystemService
    {
        return $this->getServiceLocator()->get(FileSystemService::SERVICE_ID);
    }

    private function getFlySystemManagement(): FlySystemManagement
    {
        return $this->getServiceLocator()->get(FlySystemManagement::SERVICE_ID);
    }

    private function getFileRefSerializer(): FileReferenceSerializer
    {
        return $this->getServiceLocator()->get(FileReferenceSerializer::SERVICE_ID);
    }
}