<?php
/*
 * Copyright 2007-2013 Charles du Jeu - Abstrium SAS <team (at) pyd.io>
 * This file is part of Pydio.
 *
 * Pydio is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Pydio 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with Pydio.  If not, see <http://www.gnu.org/licenses/>.
 *
 * The latest code can be found at <http://pyd.io/>.
 */
defined('AJXP_EXEC') or die( 'Access not allowed');

/**
 * Standard values filtering used in the core.
 * @static
 * @package Pydio
 * @subpackage Core
 */
class AJXP_VarsFilter
{
    /**
     * Filter the very basic keywords from the XML  : AJXP_USER, AJXP_INSTALL_PATH, AJXP_DATA_PATH
     * Calls the vars.filter hooks.
     * @static
     * @param $value
     * @return mixed|string
     */
    public static function filter($value)
    {
        if (is_string($value) && strpos($value, "AJXP_USER")!==false) {
            if (AuthService::usersEnabled()) {
                $loggedUser = AuthService::getLoggedUser();
                if ($loggedUser != null) {
                    if ($loggedUser->hasParent() && $loggedUser->getResolveAsParent()) {
                        $loggedUserId = $loggedUser->getParent();
                    } else {
                        $loggedUserId = $loggedUser->getId();
                    }
                    $value = str_replace("AJXP_USER", $loggedUserId, $value);
                } else {
                    return "";
                }
            } else {
                $value = str_replace("AJXP_USER", "shared", $value);
            }
        }
        if (is_string($value) && strpos($value, "AJXP_GROUP_PATH")!==false) {
            if (AuthService::usersEnabled()) {
                $loggedUser = AuthService::getLoggedUser();
                if ($loggedUser != null) {
                    $gPath = $loggedUser->getGroupPath();
                    $value = str_replace("AJXP_GROUP_PATH_FLAT", str_replace("/", "_", trim($gPath, "/")), $value);
                    $value = str_replace("AJXP_GROUP_PATH", $gPath, $value);
                } else {
                    return "";
                }
            } else {
                $value = str_replace(array("AJXP_GROUP_PATH", "AJXP_GROUP_PATH_FLAT"), "shared", $value);
            }
        }
        if (is_string($value) && strpos($value, "AJXP_INSTALL_PATH") !== false) {
            $value = str_replace("AJXP_INSTALL_PATH", AJXP_INSTALL_PATH, $value);
        }
        if (is_string($value) && strpos($value, "AJXP_DATA_PATH") !== false) {
            $value = str_replace("AJXP_DATA_PATH", AJXP_DATA_PATH, $value);
        }
        $tab = array(&$value);
        AJXP_Controller::applyIncludeHook("vars.filter", $tab);
        return $value;
    }
}
