/**
    * Copyright 2004-2014 The Kuali Foundation
    *
    * Licensed under the Educational Community License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
    * http://www.opensource.org/licenses/ecl2.php
    *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.kuali.kpme.core;
  
  import java.io.IOException;
  import java.util.Date;
  
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import org.apache.commons.lang.StringUtils;
  import org.apache.log4j.Logger;
  import org.kuali.rice.kns.web.struts.action.KualiRequestProcessor;
  
  public class KPMERequestProcessor extends KualiRequestProcessor {
  	
  	private static final Logger LOG = Logger.getLogger(KPMERequestProcessor.class);
  	private static final String PRIVACY_POLICY_KEY = "P3P";
  	private static final String PRIVACY_POLICY_VALUE = "CP=\"CAO DSP COR CURa ADMa DEVa CUSo TAIa PSAa PSDa OUR STP ONL UNI COM NAV INT DEM STA PRE\"";
  	
  	@Override
  	public void process(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
  
          // Make sure ThreadLocal context is clean before doing anything else -
          // Tomcat uses a threadpool, and the ThreadLocals do not automatically die.
  		
  		Date startTime = new Date();
  		
  		super.process(request, response);
  
  		String header = " Browser: " + request.getHeader("User-Agent");
  		if (StringUtils.isBlank(header)) {
  			header = "No header found";
  		}
  		
  		response.setHeader(PRIVACY_POLICY_KEY, PRIVACY_POLICY_VALUE);
  		
  		long totalTime = System.currentTimeMillis() - startTime.getTime();
  		
  		LOG.info(new StringBuffer("Finished processing :: PERFORMANCE :: [[[Total Time: " + totalTime + "ms]]] ").append(request.getRequestURL()).append(header));
  		
  	}
  
  }