<?php
/**
 * @param Twig_Environment $env - The Twig Environment - https://twig.symfony.com/api/1.x/Twig_Environment.html
 * @param $config - Config of `@basalt/twig-renderer`
 */
function addCustomExtension(\Twig_Environment &$env, $config) {

  $env->addExtension(new \Twig_Extension_Debug());

  /**
   * ADD TWIG EXTENDS FROM FOLDER
   */
  try {
    $functionsDir = __DIR__ . DIRECTORY_SEPARATOR . '_functions';
    $filtersDir = __DIR__ . DIRECTORY_SEPARATOR . '_filters';

    if ($handle = opendir($functionsDir)) {
      while (false !== ($fileName = readdir($handle))) {
        if ($fileName[0] != "_" && $fileName[0] != "." && substr_count(
            $fileName,
            '.function.php'
          )) {
          include($functionsDir . DIRECTORY_SEPARATOR . $fileName);
          // $function should be defined in the included file
          if (isset($function)) {
            $env->addFunction($function);
            unset($function);
          }
        }
      }
    }

    if ($handle = opendir($filtersDir)) {
      while (false !== ($fileName = readdir($handle))) {
        if ($fileName[0] != "_" && $fileName[0] != "." && substr_count($fileName, '.filter.php')) {
          include($filtersDir . DIRECTORY_SEPARATOR . $fileName);
          // $filter should be defined in the included file
          if (isset($filter)) {
            $env->addFilter($filter);
            unset($filter);
          }
        }
      }
    }
    // echo '--- ADDED TWIG EXT IN ' . (microtime(true) - $time) . 'ms' . PHP_EOL;
  } catch (Exception $e) {
    echo $e . PHP_EOL;
  }

}