<?php

/**
 * This program 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; under version 2
 * of the License (non-upgradable).
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 * Copyright (c) 2008-2010 (original work) Deutsche Institut für Internationale Pädagogische Forschung (under the project TAO-TRANSFER);
 *               2009-2012 (update and modification) Public Research Centre Henri Tudor (under the project TAO-SUSTAIN & TAO-DEV);
 *
 */

namespace oat\funcAcl\helpers;

use oat\tao\model\accessControl\func\FuncHelper;
use oat\funcAcl\models\AccessService;

/**
 * Helper to map URIs to controllers
 *
 * @access public
 * @author Joel Bout <joel@taotesting.com>
 * @package tao
 */
class MapHelper
{
    
    public static function getUriForExtension($extId)
    {
        return AccessService::singleton()->makeEMAUri($extId);
    }
    
    public static function getUriForController($controllerClassName)
    {
        $extension = self::getExtensionFromController($controllerClassName);
        $shortName = strpos($controllerClassName, '\\') !== false
            ? substr($controllerClassName, strrpos($controllerClassName, '\\') + 1)
            : substr($controllerClassName, strrpos($controllerClassName, '_') + 1)
        ;
        return AccessService::singleton()->makeEMAUri($extension, $shortName);
    }

    public static function getUriForAction($controllerClassName, $actionName)
    {
        $extension = self::getExtensionFromController($controllerClassName);
        $shortName = strpos($controllerClassName, '\\') !== false
            ? substr($controllerClassName, strrpos($controllerClassName, '\\') + 1)
            : substr($controllerClassName, strrpos($controllerClassName, '_') + 1)
        ;
        return AccessService::singleton()->makeEMAUri($extension, $shortName, $actionName);
    }

    public static function getControllerFromUri($uri)
    {
        list($type, $extension, $controller) = explode('_', substr($uri, strpos($uri, '#') + 1));
        return FuncHelper::getClassName($extension, $controller);
    }
    
    public static function getActionFromUri($uri)
    {
        list($type, $extension, $controller, $action) = explode('_', substr($uri, strpos($uri, '#') + 1));
        return $action;
    }

    /**
     * @param $controllerClass
     * @return mixed
     * @throws \common_exception_Error
     */
    public static function getExtensionFromController($controllerClass)
    {
        if (strpos($controllerClass, '\\') === false) {
            $parts = explode('_', $controllerClass);
            if (count($parts) === 3) {
                return $parts[0];
            } else {
                throw new \common_exception_Error('Unknown controller ' . $controllerClass);
            }
        } else {
            foreach (\common_ext_ExtensionsManager::singleton()->getEnabledExtensions() as $ext) {
                foreach ($ext->getManifest()->getRoutes() as $routePrefix => $route) {
                    if (is_array($route) && array_key_exists('class', $route)) {
                        $route = $route['class']::getControllerPrefix() ?: $route;
                    }
                    if (is_string($route) && substr($controllerClass, 0, strlen($route)) === $route) {
                        return $ext->getId();
                    }
                }
            }
            throw new \common_exception_Error('Unknown controller ' . $controllerClass);
        }
    }
}