/*
 * Copyright 2010, Red Hat, Inc. and individual contributors as indicated by the
 * @author tags. See the copyright.txt file in the distribution for a full
 * listing of individual contributors.
 * 
 * This is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 * 
 * This software 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 Lesser General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this software; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA, or see the FSF
 * site: http://www.fsf.org.
 */
package org.zanata.util;

import java.io.Serializable;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;

import javax.servlet.http.HttpServletRequest;

import org.jboss.seam.ScopeType;
import org.jboss.seam.annotations.AutoCreate;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Scope;

/**
 * Get the URL for the current page in URL encoded format for use in the query
 * string
 * 
 * @author David Mason, damason@redhat.com
 */
@Name("urlUtil")
@Scope(ScopeType.SESSION)
@AutoCreate
public class UrlUtil implements Serializable
{

   /**
    * 
    */
   private static final long serialVersionUID = 1L;
   private final static String ENCODING = "UTF-8";

   /**
    * Get the local url part, including context path, for the given page
    * request, encoded for use in query string.
    * 
    * Current implementation only works for forwarded requests
    * 
    * @param request the current request
    * @return local part of url from original request, url encoded
    */
   public String getEncodedLocalUrl(HttpServletRequest request)
   {
      String url = (String) request.getAttribute("javax.servlet.forward.context_path");
      url += (String) request.getAttribute("javax.servlet.forward.servlet_path");
      String queryString = (String) request.getAttribute("javax.servlet.forward.query_string");
      if (queryString != null && queryString.length() > 0)
      {
         url += "?" + queryString;
      }

      try
      {
         return URLEncoder.encode(url, ENCODING);
      }
      catch (UnsupportedEncodingException e)
      {
         throw new RuntimeException(e);
      }
   }

}

/*
 * Copyright 2010, Red Hat, Inc. and individual contributors as indicated by the
 * @author tags. See the copyright.txt file in the distribution for a full
 * listing of individual contributors.
 * 
 * This is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 * 
 * This software 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 Lesser General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this software; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA, or see the FSF
 * site: http://www.fsf.org.
 */
package org.zanata.util;

import java.io.Serializable;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;

import javax.servlet.http.HttpServletRequest;

import org.jboss.seam.ScopeType;
import org.jboss.seam.annotations.AutoCreate;
import org.jboss.seam.annotations.Logger;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Scope;
import org.jboss.seam.log.Log;

/**
 * Get the URL for the current page in URL encoded format for use in the query
 * string
 * 
 * @author David Mason, damason@redhat.com
 */
@Name("urlUtil")
@Scope(ScopeType.SESSION)
@AutoCreate
public class UrlUtil implements Serializable
{

   @Logger
   private Log log;

   /**
    * 
    */
   private static final long serialVersionUID = 1L;
   private final static String ENCODING = "UTF-8";

   /**
    * Get the local url part, including context path, for the given page
    * request, encoded for use in query string.
    * 
    * Current implementation only works for forwarded requests
    * 
    * @param request the current request
    * @return local part of url from original request, url encoded
    */
   public String getEncodedLocalUrl(HttpServletRequest request)
   {
      String url, queryString;
      if (request.getAttribute("javax.servlet.forward.request_uri") != null)
      {
         url = (String) request.getAttribute("javax.servlet.forward.context_path");
         url += (String) request.getAttribute("javax.servlet.forward.servlet_path");
         queryString = (String) request.getAttribute("javax.servlet.forward.query_string");
      }
      else
      {
         url = request.getRequestURI();
         queryString = request.getQueryString();
         log.warn("encountered non-rewritten url {0} with query string {1}", url, queryString);
      }


      if (queryString != null && queryString.length() > 0)
      {
         url += "?" + queryString;
      }

      try
      {
         return URLEncoder.encode(url, ENCODING);
      }
      catch (UnsupportedEncodingException e)
      {
         throw new RuntimeException(e);
      }
   }

}

handle and warn of non-rewritten urls for sign in redirect