whmcsKerioEmail/app/Http/Actions/TestConnection.php

<?php
namespace ThurData\Servers\KerioEmail\App\Http\Actions;
require_once '/Services/Internet/html/modules/servers/kerioEmail/api/KerioConnectApi.php';

use ThurData\Servers\KerioEmail\App\Helpers\KerioManager;
use ThurData\Servers\KerioEmail\App\Libs\Kerio\Api;
use ThurData\Servers\KerioEmail\App\Libs\Kerio\Components\Api\Soap\Client;
use ThurData\Servers\KerioEmail\App\Traits\ExtensionsCheckerTrait;
use ThurData\Servers\KerioEmail\Core\App\Controllers\Instances\AddonController;
use ThurData\Servers\KerioEmail\Api\KerioConnectApi;

/**
 *
 * Created by PhpStorm.
 * User: ThurData
 * Date: 27.08.19
 * Time: 14:54
 * Class TestConnection
 */
class TestConnection extends AddonController
{

//    use ExtensionsCheckerTrait;
    /**
     *
     *
     * @param null $params
     * @return array
     */
    public function execute($params = null)
    {
        /**
         * API Connection
         */

        $api = new KerioConnectApi('whmcsKerioEmail', 'Thurdata', '1.0');
        try {
            $api->login($params['serverhostname'], $params['serverusername'], $params['serverpassword']);
            $serverInfo = $api->sendRequest('Server.getProductInfo');
            $api->logout();
        } catch (KerioApiException $error) {
            logModuleCall(
                'kerioEmail',
                __FUNCTION__,
                $api,
                '',
                $error->getMessage()
            );
            return ['error' => $error->getMessage()];
        }             
        
        logModuleCall(
            'kerioEmail',
            __FUNCTION__,
            $serverInfo,
            'Debug Kerio Api',
            $api
        );

        /**
         * check if connected and return true
         */
        if($serverInfo)
        {
            return ['success' => true];
        }

    }
}