/**

  * Copyright 2005-2011 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.kew.notification.service.impl;

 import java.util.List;

 import javax.xml.namespace.QName;

 import org.apache.commons.lang.StringUtils;

 import org.kuali.rice.core.api.config.property.ConfigContext;

 import org.kuali.rice.core.api.resourceloader.GlobalResourceLoader;

 import org.kuali.rice.kcb.api.message.MessageDTO;

 import org.kuali.rice.kcb.api.service.KCBServiceNames;

 import org.kuali.rice.kcb.api.service.MessagingService;

 import org.kuali.rice.kcb.util.KCBConstants;

 import org.kuali.rice.kew.api.WorkflowRuntimeException;

 import org.kuali.rice.kew.api.action.ActionItem;

 import org.kuali.rice.kew.api.KewApiConstants;

 /**

  * NotificationService implementation that delegates to KCB

  *

  * @author Kuali Rice Team (rice.collab@kuali.org)

  */

 public class KCBNotificationService extends DefaultNotificationService {

     @Override

     protected void sendNotification(ActionItem actionItem) {

         super.sendNotification(actionItem);

         String enableKENNotificationValue = ConfigContext.getCurrentContextConfig().getProperty(KewApiConstants.ENABLE_KEN_NOTIFICATION);

         boolean enableKENNotification = Boolean.parseBoolean(enableKENNotificationValue);

         // we only send per-user messages to KCB

         if (!enableKENNotification || actionItem.getPrincipalId() != null)

             return;

         // send it off to KCB if available

         MessagingService ms = (MessagingService) GlobalResourceLoader.getService(new QName(KCBConstants.SERVICE_NAMESPACE, KCBServiceNames.KCB_MESSAGING));

         if (ms == null) {

                 LOG.info("Could not locate KCB MessagingService.  Message will not be forwarded to the KCB.");

                 return;

         }

         MessageDTO mvo = new MessageDTO();

         mvo.setChannel("KEW");

         mvo.setContent("i'm a kew notification");

         mvo.setContentType("KEW notification");

         mvo.setDeliveryType(actionItem.getActionRequestCd());

         mvo.setProducer("kew@localhost");

         mvo.setTitle(actionItem.getDocLabel() + " - " + actionItem.getDocName() + " - " + actionItem.getDocTitle());

         if (StringUtils.isNotBlank(actionItem.getDocHandlerURL())) {

                 mvo.setUrl(actionItem.getDocHandlerURL() + "?docId=" + actionItem.getDocumentId());

         }

         mvo.setOriginId(String.valueOf(actionItem.getId()));

         try {

             // just assume it's a user at this point...

             mvo.setRecipient(actionItem.getPrincipalId());

             LOG.debug("Sending message to KCB: " + mvo);

             ms.deliver(mvo);

         } catch (Exception e) {

             throw new WorkflowRuntimeException("could not deliver message to KCB", e);

         }

     }

     @Override

     public void removeNotification(List<ActionItem> actionItems) {

             String enableKENNotificationValue = ConfigContext.getCurrentContextConfig().getProperty(KewApiConstants.ENABLE_KEN_NOTIFICATION);

         boolean enableKENNotification = Boolean.parseBoolean(enableKENNotificationValue);

         if (!enableKENNotification) {

                 return;

         }

         MessagingService ms = (MessagingService) GlobalResourceLoader.getService(new QName(KCBConstants.SERVICE_NAMESPACE, KCBServiceNames.KCB_MESSAGING));

         for (ActionItem actionItem: actionItems) {

                 LOG.debug("Removing KCB messages for action item: " + actionItem.getId() + " " + actionItem.getActionRequestCd() + " " + actionItem.getPrincipalId());

             try {

                 // we don't have the action takens at this point...? :(

                 ms.removeByOriginId(String.valueOf(actionItem.getId()), null, null);

             } catch (Exception e) {

                 throw new RuntimeException("could not remove message from KCB", e);

             }

         }

     }

 }