<?php
/*
 * Copyright (C) Ascensio System SIA, 2009-2026
 *
 * This program is a free software product. You can redistribute it and/or
 * modify it under the terms of the GNU Affero General Public License (AGPL)
 * version 3 as published by the Free Software Foundation, together with the
 * additional terms provided in the LICENSE file.
 *
 * This program is distributed WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For
 * details, see the GNU AGPL at: https://www.gnu.org/licenses/agpl-3.0.html
 *
 * You can contact Ascensio System SIA by email at info@onlyoffice.com
 * or by postal mail at 20A-6 Ernesta Birznieka-Upisha Street, Riga,
 * LV-1050, Latvia, European Union.
 *
 * The interactive user interfaces in modified versions of the Program
 * are required to display Appropriate Legal Notices in accordance with
 * Section 5 of the GNU AGPL version 3.
 *
 * No trademark rights are granted under this License.
 *
 * All non-code elements of the Product, including illustrations,
 * icon sets, and technical writing content, are licensed under the
 * Creative Commons Attribution-ShareAlike 4.0 International License:
 * https://creativecommons.org/licenses/by-sa/4.0/legalcode
 *
 * This license applies only to such non-code elements and does not
 * modify or replace the licensing terms applicable to the Program's
 * source code, which remains licensed under the GNU Affero General
 * Public License v3.
 *
 * SPDX-License-Identifier: AGPL-3.0-only
 */

namespace OCA\Onlyoffice;

use OC\Files\Filesystem;
use OCP\Util;

/**
 * The class to handle the filesystem hooks
 *
 * @package OCA\Onlyoffice
 */
class Hooks {

    public static function connectHooks() {
        // Listen file version deletion
        Util::connectHook("\OCP\Versions", "preDelete", Hooks::class, "fileVersionDelete");
    }

    /**
     * Erase versions of deleted version of file
     *
     * @param array $params - hook param
     */
    public static function fileVersionDelete(array $params): void {
        $pathVersion = $params["path"];
        if (empty($pathVersion)) {
            return;
        }

        try {
            $result = FileVersions::splitPathVersion($pathVersion);
            if ($result === false) {
                return;
            }
            [$filePath, $versionId] = $result;
            if (empty($filePath)) {
                return;
            }
            $fileInfo = Filesystem::getFileInfo($filePath);
            if ($fileInfo === false) {
                return;
            }

            $owner = $fileInfo->getOwner();
            if (empty($owner)) {
                return;
            }
            $ownerId = $owner->getUID();

            FileVersions::deleteVersion($ownerId, $fileInfo, $versionId);
            FileVersions::deleteAuthor($ownerId, $fileInfo, $versionId);
        } catch (\Exception $e) {
            \OCP\Log\logger('onlyoffice')->error("Hook: fileVersionDelete " . json_encode($params), ['exception' => $e]);
        }
    }
}