seria/public/index.php

<?php
namespace Seria;

use Seria\Auth\ChatAuth;
use Seria\Users\UserInfo;

require_once __DIR__ . '/../seria.php';

$authToken = (string)filter_input(INPUT_COOKIE, 'msz_auth');
$authInfo = ChatAuth::attempt(SERIA_CAUTH_ENDPOINT, SERIA_MSZ_SECRET, $authToken);

if($authInfo->success) {
    $users = $seria->getUsersContext()->getUsers();
    $users->syncChatUser($authInfo);
    $sUserInfo = $users->getUser($authInfo->user_id, 'id');
    $seria->getAuthInfo()->setInfo($sUserInfo);
} else $sUserInfo = null;

$seria->startCSRFP(
    SERIA_CSRFP_SECRET,
    $authInfo->success ? $authToken : (string)filter_input(INPUT_SERVER, 'REMOTE_ADDR')
);

$seria->startTemplating();
$seria->createRouting()->dispatch();