/*

  * Copyright 2006-2011 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.ken.service.impl;

 import org.kuali.rice.core.framework.persistence.dao.GenericDao;

 import org.kuali.rice.ken.bo.NotificationChannel;

 import org.kuali.rice.ken.bo.NotificationProducer;

 import org.kuali.rice.ken.service.NotificationAuthorizationService;

 import org.kuali.rice.ken.util.NotificationConstants;

 import org.kuali.rice.kim.api.group.Group;

 import org.kuali.rice.kim.api.group.GroupService;

 import org.kuali.rice.kim.api.services.KimApiServiceLocator;

 import org.kuali.rice.kim.bo.Person;

 import org.kuali.rice.kim.util.KimConstants;

 import java.util.List;

 /**

  * NotificationAuthorizationService implementation - this is the default out-of-the-box implementation of the service.

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

  */

 public class NotificationAuthorizationServiceImpl implements NotificationAuthorizationService {

     private static org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(NotificationAuthorizationServiceImpl.class);

     private GenericDao businessObjectDao;

     /**

      * Constructs a NotificationAuthorizationServiceImpl class instance.

      * @param businessObjectDao

      */

     public NotificationAuthorizationServiceImpl(GenericDao businessObjectDao) {

         this.businessObjectDao = businessObjectDao;

     }

     /**

      * @see org.kuali.rice.ken.service.NotificationAuthorizationService#isProducerAuthorizedToSendNotificationForChannel(org.kuali.rice.ken.bo.NotificationProducer, org.kuali.rice.ken.bo.NotificationChannel)

      */

     public boolean isProducerAuthorizedToSendNotificationForChannel(NotificationProducer producer, NotificationChannel channel) {

         List channels = producer.getChannels();

         if(channels.contains(channel)) {

             return true;

         } else {

             return false;

         }

     }

     /**

      * Implements by calling the is user member of service in KEW's workgroup service, looking for a specific membership

      * in the "NotificationAdmin" workgroup.

      * @see org.kuali.rice.ken.service.NotificationAuthorizationService#isUserAdministrator(java.lang.String)

      */

     public boolean isUserAdministrator(String userId) {

             String groupNameId = NotificationConstants.KEW_CONSTANTS.NOTIFICATION_ADMIN_GROUP_NAME;

             Person user = KimApiServiceLocator.getPersonService().getPerson(userId);

             if (user == null) {

                 return false;

             }

         final GroupService groupService = KimApiServiceLocator.getGroupService();

         Group group = groupService.getGroupByName(KimConstants.KIM_GROUP_WORKFLOW_NAMESPACE_CODE, groupNameId);

                 return group == null ? false : groupService.isMemberOfGroup(user.getPrincipalId(), group.getId());

     }

 }