/*
 * Copyright (c) 2004, Rafael Steil
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, 
 * with or without modification, are permitted provided 
 * that the following conditions are met:
 * 
 * 1) Redistributions of source code must retain the above 
 * copyright notice, this list of conditions and the 
 * following  disclaimer.
 * 2)  Redistributions in binary form must reproduce the 
 * above copyright notice, this list of conditions and 
 * the following disclaimer in the documentation and/or 
 * other materials provided with the distribution.
 * 3) Neither the name of "Rafael Steil" nor 
 * the names of its contributors may be used to endorse 
 * or promote products derived from this software without 
 * specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT 
 * HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, 
 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 
 * THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE 
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 
 * IN CONTRACT, STRICT LIABILITY, OR TORT 
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
 * 
 * This file creating date: 11.10.2004
 * The JForum Project
 * http://www.jforum.net
 */
package net.jforum;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author Marc Wick
 * @version $Id: JForumContext.java,v 1.2 2005/01/21 15:18:06 marcwick Exp $
 */
public class JForumContext {

    private String contextPath;

    private String servletExtension;

    private HttpServletResponse response;

    private boolean isEncodingDisabled = false;

    public JForumContext(String contextPath, String servletExtension, HttpServletRequest req,
            HttpServletResponse response) {
        this.contextPath = contextPath;
        this.servletExtension = servletExtension;
        this.response = response;

        if (req != null) {
            String userAgent = req.getHeader("user-agent");
            if (userAgent != null) {
                // search engine robots are not using cookies but don't like sessionid in url
                // we are nice with the robots and don't encode the session id for them
                if (userAgent.toLowerCase().indexOf("bot") > -1) {
                    isEncodingDisabled = true;
                } else if (userAgent.toLowerCase().indexOf("slurp") > -1) {
                    isEncodingDisabled = true;
                } else if (userAgent.toLowerCase().indexOf("crawler") > -1) {
                    isEncodingDisabled = true;
                }
            }
        }
    }

    public String encodeURL(String url) {
        if (isEncodingDisabled) {
            return contextPath + url + servletExtension;
        }
        return response.encodeURL(contextPath + url + servletExtension);
    }

    public String encodeURL(String url, String extension) {
        if (isEncodingDisabled) {
            return contextPath + url + extension;
        }
        return response.encodeURL(contextPath + url + extension);
    }
}