/*
 *
 * Copyright (C) 2007-2015 Licensed to the Comunes Association (CA) under
 * one or more contributor license agreements (see COPYRIGHT for details).
 * The CA licenses this file to you under the GNU Affero General Public
 * License version 3, (the "License"); you may not use this file except in
 * compliance with the License. This file is part of kune.
 *
 * 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 cc.kune.core.server.rack.filters.gwts;

import java.io.IOException;

import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import cc.kune.core.client.errors.DefaultException;
import cc.kune.core.server.rack.filters.AbstractInjectedFilter;
import cc.kune.core.server.rack.utils.RackHelper;

import com.google.gwt.user.client.rpc.RemoteService;

public class GWTServiceFilter extends AbstractInjectedFilter {
  public static final Log LOG = LogFactory.getLog(GWTServiceFilter.class);

  private final Class<? extends RemoteService> serviceClass;
  private DelegatedRemoteServlet servlet;

  public GWTServiceFilter(final Class<? extends RemoteService> serviceClass) {
    this.serviceClass = serviceClass;
  }

  @Override
  public void destroy() {
  }

  @Override
  public void doFilter(final ServletRequest request, final ServletResponse response,
      final FilterChain chain) throws IOException, ServletException, DefaultException {
    LOG.info("--------------------------------------------------------------------------------");
    LOG.debug("SERVICE: " + RackHelper.getURI(request) + " - " + serviceClass.getSimpleName());
    servlet.service(request, response);
    // servlet.doPost((HttpServletRequest) request, (HttpServletResponse)
    // response);
  }

  @Override
  public void init(final FilterConfig filterConfig) throws ServletException {
    super.init(filterConfig);
    final RemoteService service = getInstance(serviceClass);
    this.servlet = new DelegatedRemoteServlet(service);
    servlet.setService(service, serviceClass.getSimpleName());
    servlet.setServletContext(filterConfig.getServletContext());
  }

}