/**
    * Copyright 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.osedu.org/licenses/ECL-2.0
    *
    * 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.mobility.push.dao;
  
  import org.apache.log4j.Logger;
  import org.kuali.mobility.push.service.PushDeviceTupleService;
  import org.kuali.mobility.security.group.api.Group;
  import org.kuali.mobility.security.user.api.User;
  import org.kuali.mobility.shared.Constants;
  import org.springframework.beans.factory.annotation.Autowired;
  
  import javax.persistence.EntityManager;
  import javax.persistence.PersistenceContext;
  import javax.servlet.http.HttpServletRequest;
  import java.util.Iterator;
  import java.util.List;
  
  /**
   * PurgePushNotificationDaoImpl class is implementation of PurgePushNotificationDao interface and it provides a
   * method namely purgePushNotification to purge push notification data from the database based on the status provided.
   *
   * @author Kuali Mobility Team (mobility.collab@kuali.org)
   */
  public class PurgePushNotificationDaoImpl implements  PurgePushNotificationDao {
  
      /** A reference to a logger */
      private static final Logger LOG = Logger.getLogger(PurgePushNotificationDaoImpl.class);
  
      /** A reference to the <code>EntityManger</code> */
      @PersistenceContext
      private EntityManager entityManager;
  
      @Autowired
      private PushDeviceTupleService pdtService;
  
  
      /**
       * Creates a new instance of a <code>PurgePushNotificationDaoImpl</code>
       */
      public PurgePushNotificationDaoImpl(){}
  
      public boolean purgePushNotification(HttpServletRequest request, int status){
          boolean success = false;
          String isAdmin = "no";
          int result = 0;
          User user = (User) request.getSession().getAttribute(Constants.KME_USER_KEY);
          List<Group> groups = user.getGroups();
          Iterator<Group> it = groups.iterator();
          while(it.hasNext()){
              Group group = it.next();
              if("KME-ADMINISTRATOR".equals(group.getName())){
                  isAdmin = "yes";
              }
          }
          if("yes".equalsIgnoreCase(isAdmin)) {
              String hql = "DELETE PushDeviceTuple t WHERE t.status = :status";
              result = entityManager.createQuery(hql).setParameter("status", status).executeUpdate();
              success = true;
          }
          return success;
      }
  
      /**
       * Return the <code>EntityManager</code> for this DaoImpl..
       * @return
       */
      public EntityManager getEntityManager() {
          return entityManager;
      }
  
      /**
       * Set the <code>EntityMAnager</code> for this DaoImpl.
       * @param entityManager
       */
      public void setEntityManager(EntityManager entityManager) {
          this.entityManager = entityManager;
      }
  
  }