<?php
/**
 * @copyright Copyright (c) 2016, Roger Szabo (roger.szabo@web.de)
 *
 * @author Arthur Schiwon <blizzz@arthur-schiwon.de>
 * @author blizzz <blizzz@arthur-schiwon.de>
 * @author Christoph Wurst <christoph@winzerhof-wurst.at>
 * @author Robin Appelman <robin@icewind.nl>
 * @author Roeland Jago Douma <roeland@famdouma.nl>
 * @author Roger Szabo <roger.szabo@web.de>
 * @author root <root@localhost.localdomain>
 * @author Vinicius Cubas Brand <vinicius@eita.org.br>
 *
 * @license GNU AGPL version 3 or any later version
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * 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
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 */
namespace OCP\LDAP;

/**
 * Interface ILDAPProvider
 *
 * @since 11.0.0
 */
interface ILDAPProvider {
	/**
	 * Translate a user id to LDAP DN.
	 * @param string $uid user id
	 * @return string
	 * @since 11.0.0
	 */
	public function getUserDN($uid);

	/**
	 * Translate a group id to LDAP DN.
	 * @param string $gid group id
	 * @return string
	 * @since 13.0.0
	 */
	public function getGroupDN($gid);

	/**
	 * Translate a LDAP DN to an internal user name.
	 * @param string $dn LDAP DN
	 * @return string with the internal user name
	 * @throws \Exception if translation was unsuccessful
	 * @since 11.0.0
	 */
	public function getUserName($dn);

	/**
	 * Convert a stored DN so it can be used as base parameter for LDAP queries.
	 * @param string $dn the DN
	 * @return string
	 * @since 11.0.0
	 */
	public function DNasBaseParameter($dn);

	/**
	 * Sanitize a DN received from the LDAP server.
	 * @param array $dn the DN in question
	 * @return array the sanitized DN
	 * @since 11.0.0
	 */
	public function sanitizeDN($dn);

	/**
	 * Return a new LDAP connection resource for the specified user.
	 * @param string $uid user id
	 * @return \LDAP\Connection|resource
	 * @since 11.0.0
	 */
	public function getLDAPConnection($uid);

	/**
	 * Return a new LDAP connection resource for the specified group.
	 * @param string $gid group id
	 * @return \LDAP\Connection|resource
	 * @since 13.0.0
	 */
	public function getGroupLDAPConnection($gid);

	/**
	 * Get the LDAP base for users.
	 * @param string $uid user id
	 * @return string the base for users
	 * @throws \Exception if user id was not found in LDAP
	 * @since 11.0.0
	 */
	public function getLDAPBaseUsers($uid);

	/**
	 * Get the LDAP base for groups.
	 * @param string $uid user id
	 * @return string the base for groups
	 * @throws \Exception if user id was not found in LDAP
	 * @since 11.0.0
	 */
	public function getLDAPBaseGroups($uid);

	/**
	 * Check whether a LDAP DN exists
	 * @param string $dn LDAP DN
	 * @return bool whether the DN exists
	 * @since 11.0.0
	 */
	public function dnExists($dn);

	/**
	 * Clear the cache if a cache is used, otherwise do nothing.
	 * @param string $uid user id
	 * @since 11.0.0
	 */
	public function clearCache($uid);

	/**
	 * Clear the cache if a cache is used, otherwise do nothing.
	 * @param string $gid group id
	 * @since 13.0.0
	 */
	public function clearGroupCache($gid);

	/**
	 * Get the LDAP attribute name for the user's display name
	 * @param string $uid user id
	 * @return string the display name field
	 * @throws \Exception if user id was not found in LDAP
	 * @since 12.0.0
	 */
	public function getLDAPDisplayNameField($uid);

	/**
	 * Get the LDAP attribute name for the email
	 * @param string $uid user id
	 * @return string the email field
	 * @throws \Exception if user id was not found in LDAP
	 * @since 12.0.0
	 */
	public function getLDAPEmailField($uid);

	/**
	 * Get the LDAP attribute name for the type of association between users and groups
	 * @param string $gid group id
	 * @return string the configuration, one of: 'memberUid', 'uniqueMember', 'member', 'gidNumber', ''
	 * @throws \Exception if group id was not found in LDAP
	 * @since 13.0.0
	 */
	public function getLDAPGroupMemberAssoc($gid);

	/**
	 * Get an LDAP attribute for a nextcloud user
	 *
	 * @throws \Exception if user id was not found in LDAP
	 * @since 21.0.0
	 */
	public function getUserAttribute(string $uid, string $attribute): ?string;

	/**
	 * Get a multi-value LDAP attribute for a nextcloud user
	 *
	 * @throws \Exception if user id was not found in LDAP
	 * @since 22.0.0
	 */
	public function getMultiValueUserAttribute(string $uid, string $attribute): array;
}