core/source/overwrites/principal_backend.php

<?php
/*
davina — Calendar data CalDAV conditioner
Copyright (C) 2025 Fenris <fenris@folksprak.org>

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, 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 General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see 
<https://www.gnu.org/licenses/>. 
 */

namespace davina\overwrites;

require_once('vendor/autoload.php');
require_once(DIR_LOGIC . '/helpers/list.php');


/**
 */
class class_principle_backend
	implements \Sabre\DAVACL\PrincipalBackend\BackendInterface
{
	
	/**
	 * @var array {map<string, \davina\model\struct_realm>}
	 */
	private array $realms;
	
	
	/**
	 */
	public function __construct(
		array $realms
	)
	{
		$this->realms = $realms;
	}
	
	
	/**
	 */
	public function getPrincipalsByPrefix(
		$prefixPath
	)
	{
		return [
			[
				'uri' => 'principals/-',
				'{DAV:}displayname' => 'default',
			],
		];
	}

	
	/**
	 */
	public function getPrincipalByPath(
		$path
	)
	{
		$parts = \explode('/', $path);
		$username = $parts[1];
		return [
			'uri' => $path,
			'displayname' => $username,
		];
	}
	
	
	/**
	 */
	public function updatePrincipal($path, \Sabre\DAV\PropPatch $propPatch)
	{
		throw (new \Exception('not implemented: updatePrincipal'));
	}
	

	/**
	 */
	public function searchPrincipals($prefixPath, array $searchProperties, $test = 'allof')
	{
		throw (new \Exception('not implemented: searchPrincipals'));
	}
	
	
	/**
	 */
	public function findByUri($uri, $principalPrefix)
	{
		throw (new \Exception('not implemented: findByUri'));
	}
	
	
	/**
	 */
	public function getGroupMemberSet($principal)
	{
		throw (new \Exception('not implemented: getGroupMemberSet'));
	}
	
	
	/**
	 */
	public function getGroupMembership($principal)
	{
		return [];
	}
	
	
	/**
	 */
	public function setGroupMemberSet($principal, array $members)
	{
		throw (new \Exception('not implemented: setGroupMemberSet'));
	}
	
}

 ?>