tuttogare/public_html/api/custom/procurePlus/index.php

<?php
    $configPath = substr(__DIR__,0,strpos(__DIR__,"/public_html"))."/config.php";
    require_once $configPath;

    ProcurePlus\In::authenticate();

    switch($_GET["method"]) {
        case 'ping':
            $inputBuffer = file_get_contents("php://input");
            if(!valid_json($inputBuffer, $payload, true)) {
                die("Invalid payload");
            }
    
            $signKey = ProcurePlus\KeyStore::get("sign", getCurrentDomain(), "private");
    

            die(\JOSE_JWT::encode($payload)->sign($signKey, "RS512")->toString());
            break;
        default:
            ProcurePlus\HTTP::respondJson(["error" => "Method not found"], 404);

    }