<?php

defined('BASEPATH') or exit('No direct script access allowed');

class App_Autoloader
{
    /**
     * Register Autoloader
     */
    public static function register()
    {
        spl_autoload_register(function ($classname) {
            // file_exists(APPPATH . 'core/' . $classname . '.php') will include the deprecated too CRM_Controller and CRM_Model
            // strpos($classname, 'App_') !== 0 is for AdminController and ClientsController
            if (strpos($classname, 'App_') !== 0 && file_exists(APPPATH . 'core/' . $classname . '.php')) {
                @include_once(APPPATH . 'core/' . $classname . '.php');
            }

            $prefixes = [
                'app'     => APPPATH,
                'modules' => APP_MODULES_PATH,
            ];

            foreach ($prefixes as $prefix => $replacement) {
                if (strpos(strtolower($classname), "{$prefix}\\") === 0) {

                    // Locate class relative path
                    $classname = str_replace("{$prefix}\\", '', $classname);
                    $filepath = $replacement . str_replace('\\', DIRECTORY_SEPARATOR, ltrim($classname, '\\')) . '.php';

                    if (file_exists($filepath)) {
                        require $filepath;
                    }
                }
            }
        });
    }
}