phpengine/src/OpenMind/System/OMUtils.php

<?php
/**
 * @author Open Mind
 * @date 26/04/2018
 * @time 11:11
 */

namespace OpenMind\System;

use FilesystemIterator;
use OpenMind\Web\Web;
use RecursiveDirectoryIterator;
use RecursiveIteratorIterator;

class OMUtils
{
  public static function getInstance()
  {
    static $instance = null;
    if ($instance === null) {
      $instance = new static(); // PHP 5+ lazy state building
    }
    return $instance;
  }

  /**
   * Load all modules in <$path> folder
   * @param string $path
   */
  public function PluginLoader(string $path)
  {
    // <class priority>
    //TODO if is necessary to give a priority to some classes before other, initialize here
    Global $System, $Web;
    $System = new System();  // we need System Base class first, so will force to load as first
    $Web = new Web();
    // </class priority>
    $Directory = new RecursiveDirectoryIterator($path, FilesystemIterator::SKIP_DOTS);
    $Iterator = new RecursiveIteratorIterator($Directory, RecursiveIteratorIterator::CHILD_FIRST);

    foreach($Iterator as $item) {
      if (is_file($item->getPathname()))
        continue;
      $moduleName = $item->getFilename();
      $className = str_replace('/', '\\', ltrim("{$item->getPathname()}/{$moduleName}", $path));
      // Load only PHP file with same name of namespace ex.: \Lamborghini\Lamborghini.php
      $moduleInitPath = "{$item->getPathname()}/{$moduleName}.php";
      if (file_exists($moduleInitPath)) { // If already imported, skip
        if (!isset($$moduleName)) {
          Global $$moduleName;  // Declare visibility to Global
          $$moduleName = new $className(); // Instantiate the Module, all init procedure must reside in __constructor() method
        }
      }
    }
  }

  /**
   * Use F3 template resolve() to parse string like "{{@BASESITE}}"
   *
   * @param string $strTemplate the F3 original string
   * @return string converted string
   */
  public function getStringFromTemplate(string $strTemplate)
  {
    return \Template::instance()->resolve($strTemplate);
  }


  /**
   * Load an encrypted file with the method "base64_encode(gzcompress(<path to config.ini>))", save it in a temporary file in temp folder of system and load with F3::config()
   *
   * @param string $path
   * @throws \Exception
   */
  public function LoadEncryptedConfig(string $path)
  {
    if(!file_exists($path))
      throw new \Exception('Config file not found');

    $tmpFilepath = tempnam(sys_get_temp_dir(), 'om');
    $config = gzuncompress(base64_decode(file_get_contents($path)));
    file_put_contents($tmpFilepath, $config);
    \F3::config($tmpFilepath, true);
    unlink($tmpFilepath);
  }

  public function DieByOldPhpVersion()
  {
    if (version_compare(PHP_VERSION, '7.2') != 1)
      throw new \Exception('PHP 7.2+ is need to run the project');
  }
}