whmcsProxmoxAddon/app/Configuration/Addon/Update/AddonUpgradeService.php

<?php


namespace ModulesGarden\ProxmoxAddon\App\Configuration\Addon\Update;


use ModulesGarden\ProxmoxAddon\Core\ModuleConstants;
use Illuminate\Database\Capsule\Manager as DB;

class AddonUpgradeService
{

    public function getVersion(){
        if (!file_exists(ModuleConstants::getModuleRootDir() . DIRECTORY_SEPARATOR . 'moduleVersion.php'))
        {
            return;
        }
        include ModuleConstants::getModuleRootDir() . DS . 'moduleVersion.php';
        return $moduleVersion;
    }

    public function getDatabaseVersion(){
        return DB::table("tbladdonmodules")->where("module","proxmoxAddon")->where("setting","version")->value("value");
    }
    public function run(){
        $version = $this->getVersion();
        if($version && $this->getDatabaseVersion() != $version ){

            if(!function_exists('proxmoxAddon_upgrade')){

                require_once ModuleConstants::getFullPath() . DIRECTORY_SEPARATOR . "proxmoxAddon.php";
            }
            if(function_exists('proxmoxAddon_upgrade')){
                \proxmoxAddon_upgrade([
                    "module"=> "proxmoxAddon",
                    "modulelink" => "addonmodules.php?module=proxmoxAddon",
                    "version"=> $version,
                    "access" => 1
                ]);
            }
        }
    }

}