<?php

/**
 * -------------------------------------------------------------------------
 * GenericObject plugin for GLPI
 * -------------------------------------------------------------------------
 *
 * LICENSE
 *
 * This file is part of GenericObject.
 *
 * GenericObject is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * GenericObject is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GenericObject. If not, see <http://www.gnu.org/licenses/>.
 * -------------------------------------------------------------------------
 * @copyright Copyright (C) 2009-2022 by GenericObject plugin team.
 * @license   GPLv3 https://www.gnu.org/licenses/gpl-3.0.html
 * @link      https://github.com/pluginsGLPI/genericobject
 * -------------------------------------------------------------------------
 */

class PluginGenericobjectAutoloader
{
   protected $paths = [];

   public function __construct($options = null) {
      if (null !== $options) {
         $this->setOptions($options);
      }
   }

   public function setOptions($options) {
      if (!is_array($options) && !($options instanceof \Traversable)) {
         throw new \InvalidArgumentException();
      }

      foreach ($options as $path) {
         if (!in_array($path, $this->paths)) {
            $this->paths[] = $path;
         }
      }
      return $this;
   }

   public function processClassname($classname) {
      preg_match("/^Plugin([A-Z][a-z0-9]+)([A-Z]\w+)$/", $classname, $matches);

      if (count($matches) < 3) {
         return false;
      } else {
         return $matches;
      }

   }

   public function autoload($classname) {
      $matches = $this->processClassname($classname);

      if ($matches !== false) {
         $plugin_name = strtolower($matches[1]);
         $class_name = strtolower($matches[2]);

         if ($plugin_name !== "genericobject") {
            return false;
         }

         $filename = implode(".", [
            $class_name,
            "class",
            "php"
         ]);

         foreach ($this->paths as $path) {
            $test = $path . DIRECTORY_SEPARATOR . $filename;
            if (file_exists($test)) {
               return include_once($test);
            }
         }
      }
      return false;
   }

   public function register() {
      spl_autoload_register([$this, 'autoload']);
   }
}