<?php
/**
 * @copyright Copyright (c) 2016, ownCloud, Inc.
 *
 * @author Bernhard Posselt <dev@bernhard-posselt.com>
 * @author Christoph Wurst <christoph@winzerhof-wurst.at>
 * @author Julius Härtl <jus@bitgrid.net>
 * @author Morris Jobke <hey@morrisjobke.de>
 *
 * @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 OCP\Files;

use OC\Hooks\Emitter;
use OC\User\NoUserException;
use OCP\Files\Cache\ICacheEntry;
use OCP\Files\Mount\IMountPoint;
use OCP\Files\Node as INode;

/**
 * Interface IRootFolder
 *
 * @since 8.0.0
 */
interface IRootFolder extends Folder, Emitter {
	/**
	 * Returns a view to user's files folder
	 *
	 * @param string $userId user ID
	 * @return Folder
	 * @throws NoUserException
	 * @throws NotPermittedException
	 *
	 * @since 8.2.0
	 */
	public function getUserFolder($userId);

	/**
	 * Get a file or folder by fileid, inside a parent path
	 *
	 * @param int $id
	 * @param string $path
	 * @return Node[]
	 *
	 * @since 24.0.0
	 */
	public function getByIdInPath(int $id, string $path);

	/**
	 * get a file or folder inside the folder by its internal id
	 *
	 * Unlike getByIdInPath, this method only returns a single node even if the user has
	 * access to the file with the requested id multiple times.
	 *
	 * This method provides no guarantee about which of the nodes in returned and the
	 * returned node might, for example, have less permissions than other nodes for the same file
	 *
	 * Apps that require accurate information about the users access to the file should use getByIdInPath
	 * instead of pick the correct node out of the result.
	 *
	 * @param int $id
	 * @return Node|null
	 * @since 29.0.0
	 */
	public function getFirstNodeByIdInPath(int $id, string $path): ?Node;

	/**
	 * @return IMountPoint[]
	 *
	 * @since 28.0.0
	 */
	public function getMountsIn(string $mountPoint): array;

	/**
	 * Create a `Node` for a file or folder from the cache entry and mountpoint
	 *
	 * @param ICacheEntry $cacheEntry
	 * @param IMountPoint $mountPoint
	 * @return Node
	 * @since 28.0.0
	 */
	public function getNodeFromCacheEntryAndMount(ICacheEntry $cacheEntry, IMountPoint $mountPoint): INode;

	/**
	 * @since 28.0.0
	 */
	public function getMount(string $mountPoint): IMountPoint;

	/**
	 * @return string
	 * @since 30.0.0
	 */
	public function getAppDataDirectoryName(): string;
}