owncloud/core

<?php
/**
 * @author Thomas Müller <thomas.mueller@tmit.eu>
 *
 * @copyright Copyright (c) 2018, ownCloud GmbH
 * @license AGPL-3.0
 *
 * This code is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 *
 * 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License, version 3,
 * along with this program.  If not, see <http://www.gnu.org/licenses/>
 *
 */

namespace OC\Files\Meta;

use OC\Files\Node\AbstractFolder;
use OCP\Constants;
use OCP\Files\FileInfo;
use OCP\Files\IRootFolder;
use OCP\Files\NotFoundException;
use OCP\IUserSession;

/**
 * Class MetaRootNode - this class represents the root node of the meta endpoint
 *
 * @package OC\Files\Meta
 */
class MetaRootNode extends AbstractFolder {
    /**
     * @var IRootFolder
     */
    private $rootFolder;
    /**
     * @var IUserSession
     */
    private $userSession;

    public function __construct(IRootFolder $rootFolder, IUserSession $userSession) {
        $this->rootFolder = $rootFolder;
        $this->userSession = $userSession;
    }

    /**
     * @inheritdoc
     */
    public function getName() {
        return 'meta';
    }

    /**
     * @inheritdoc
     */
    public function getPath() {
        return '/meta';
    }

    /**
     * @inheritdoc
     */
    public function isEncrypted() {
        return false;
    }

    /**
     * @inheritdoc
     */
    public function isShared() {
        return false;
    }

    /**
     * @inheritdoc
     */
    public function isMounted() {
        return false;
    }

    /**
     * @inheritdoc
     */
    public function getDirectoryListing() {
        // TODO: in debug mode we might want to return the list of all fileids
        return [];
    }

    /**
     * @inheritdoc
     */
    public function get($path) {
        $pieces = \explode('/', $path);
        $fileId = (int)$pieces[0];

        $uid = $this->userSession->getUser()->getUID();
        $nodes = $this->rootFolder->getUserFolder($uid)->getById($fileId, true);
        if (empty($nodes)) {
            throw new NotFoundException();
        }

        \array_shift($pieces);
        $node = new MetaFileIdNode($this, $this->rootFolder, $nodes[0]);
        if (empty($pieces)) {
            return $node;
        }
        return $node->get(\implode('/', $pieces));
    }

    /**
     * @inheritdoc
     */
    public function getById($id, $first = false) {
        return [
            $this->get("$id")
            ];
    }

    /**
     * @inheritdoc
     */
    public function getFreeSpace() {
        return FileInfo::SPACE_UNKNOWN;
    }

    /**
     * @inheritdoc
     */
    public function isCreatable() {
        return false;
    }

    /**
     * @inheritdoc
     */
    public function getPermissions() {
        return Constants::PERMISSION_READ;
    }

    /**
     * @inheritdoc
     */
    public function isReadable() {
        // TODO: false if not debug
        return true;
    }

    /**
     * @inheritdoc
     */
    public function isUpdateable() {
        return false;
    }

    /**
     * @inheritdoc
     */
    public function isDeletable() {
        return false;
    }

    /**
     * @inheritdoc
     */
    public function isShareable() {
        return false;
    }
}