<?php 

namespace app\controllers\cms;

use Registry;
use Render;
use app\controllers\Auth;
use app\models\cms\Course_model;

class Course {

    /** serve file by file_path
     * (request is valid only for admin users)
     * 
     * @param $file_path (string): relative file path
     * GET @param type (string) : media-type of file
     */
    public static function serve_file($file_path)
    {
        // check privileges
        if (Auth::is_admin()) {     // TODO: -OR- has prvivilege

            $media_type = Registry::get('REQUEST')->GET['type'];    // get media-type
            $real_path = MEDIA_STORAGE_ROOT . $file_path;           // construct real path

            if (!file_exists($real_path)) {
                Render::view('error/404');

            } else {
                Render::file($real_path, $media_type);
            }

        }
    }

}