/**
    * Copyright 2005-2013 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.rice.ksb.messaging.web;
  
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Map;
  
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  import javax.xml.namespace.QName;
  
  import org.apache.log4j.Logger;
  import org.apache.struts.action.ActionForm;
  import org.apache.struts.action.ActionForward;
  import org.apache.struts.action.ActionMapping;
  import org.apache.struts.action.ActionMessages;
  import org.kuali.rice.core.api.CoreConstants;
  import org.kuali.rice.core.api.config.CoreConfigHelper;
  import org.kuali.rice.core.api.config.property.ConfigContext;
  import org.kuali.rice.core.api.util.RiceUtilities;
  import org.kuali.rice.ksb.api.KsbApiConstants;
  import org.kuali.rice.ksb.api.KsbApiServiceLocator;
  import org.kuali.rice.ksb.api.bus.Endpoint;
  import org.kuali.rice.ksb.api.bus.ServiceBus;
  import org.kuali.rice.ksb.api.bus.ServiceConfiguration;
  import org.kuali.rice.ksb.api.bus.ServiceBusAdminService;
  
  
  /**
   * Struts action for interacting with the queue of messages.
   *
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  public class ServiceBusAction extends KSBAction {
  
      private static final QName SERVICE_BUS_ADMIN_SERVICE_QUEUE = new QName(
              KsbApiConstants.Namespaces.KSB_NAMESPACE_2_0, "serviceBusAdminService");
      private static final Logger LOG = Logger.getLogger(ServiceBusAction.class);
  
      public ActionForward start(ActionMapping mapping, ActionForm form, HttpServletRequest request,
  			HttpServletResponse response) throws IOException, ServletException {
  		return mapping.findForward("basic");
  	}
  
  	public ActionForward refreshServiceBus(ActionMapping mapping, ActionForm form, HttpServletRequest request,
  			HttpServletResponse response) throws IOException, ServletException {
  
          String applicationId = ConfigContext.getCurrentContextConfig().getProperty(
                  CoreConstants.Config.APPLICATION_ID);
  
          List<Endpoint> endpoints = KsbApiServiceLocator.getServiceBus().getEndpoints(SERVICE_BUS_ADMIN_SERVICE_QUEUE, applicationId);
          if (endpoints.isEmpty()) {
              KsbApiServiceLocator.getServiceBus().synchronize();
          } else {
              for (Endpoint endpoint : endpoints) {
                  ServiceBusAdminService serviceBusAdminService = (ServiceBusAdminService) endpoint.getService();
                  LOG.info("Calling " + endpoint.getServiceConfiguration().getEndpointUrl() + " on " +
                      endpoint.getServiceConfiguration().getInstanceId());
  
                  serviceBusAdminService.clearServiceBusCache();
              }
          }
  		return mapping.findForward("basic");
  	}
  
  	public ActionMessages establishRequiredState(HttpServletRequest request, ActionForm actionForm) throws Exception {
  		ServiceBusForm form = (ServiceBusForm)actionForm;
  		form.setMyIpAddress(RiceUtilities.getIpNumber());
  		form.setMyApplicationId(CoreConfigHelper.getApplicationId());
  		form.setDevMode(ConfigContext.getCurrentContextConfig().getDevMode());
  		ServiceBus serviceBus = KsbApiServiceLocator.getServiceBus();
  		form.setMyInstanceId(serviceBus.getInstanceId());
  		form.setPublishedServices(getPublishedServices(serviceBus));
  		form.setGlobalServices(getGlobalServices(serviceBus));
  
  		return null;
  	}
  
  	private List<ServiceConfiguration> getPublishedServices(ServiceBus serviceBus) {
  		Map<QName, Endpoint> localEndpoints = serviceBus.getLocalEndpoints();
  		List<ServiceConfiguration> publishedServices = new ArrayList<ServiceConfiguration>();
  		for (Endpoint endpoint : localEndpoints.values()) {
  			publishedServices.add(endpoint.getServiceConfiguration());
 		}
 		return publishedServices;
 	}
 
 	private List<ServiceConfiguration> getGlobalServices(ServiceBus serviceBus) {
 		List<ServiceConfiguration> allServices = new ArrayList<ServiceConfiguration>();
 		for(Endpoint endpoint : serviceBus.getAllEndpoints()) {
 			allServices.add(endpoint.getServiceConfiguration());
 		}
 		return allServices;
 	}
 
 }