/*
 * Copyright (C) 2008-2017, Juick
 *
 * This program 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.
 *
 * 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.juick.www;

import javax.servlet.http.HttpServletRequest;
import java.util.Optional;

/**
 *
 * @author Ugnich Anton
 */
public class Utils {


    public static String encodeSphinx(String str) {
        return str.replaceAll("@", "\\\\@");
    }

    /**
     * Returns the viewName to return for coming back to the sender url
     *
     * @param request Instance of {@link HttpServletRequest} or use an injected instance
     * @return Optional with the view name. Recomended to use an alternativa url with
     * {@link Optional#orElse(java.lang.Object)}
     */
    public static Optional<String> getPreviousPageByRequest(HttpServletRequest request)
    {
        return Optional.ofNullable(request.getHeader("Referer")).map(requestUrl -> "redirect:" + requestUrl);
    }
}