/**
    * 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.kew.actionrequest.dao.impl;
  
  import java.io.Serializable;
  import java.sql.Timestamp;
  import java.util.Collection;
  import java.util.Collections;
  import java.util.List;
  
  import javax.persistence.EntityManager;
  import javax.persistence.PersistenceContext;
  import javax.persistence.Query;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.core.framework.persistence.jpa.OrmUtils;
  import org.kuali.rice.kew.actionrequest.ActionRequestValue;
  import org.kuali.rice.kew.actionrequest.dao.ActionRequestDAO;
  import org.kuali.rice.kew.api.action.ActionRequestStatus;
  import org.kuali.rice.kew.api.action.RecipientType;
  import org.kuali.rice.kew.api.KewApiConstants;
  import org.kuali.rice.kim.api.group.Group;
  
  /**
   * This is a description of what this class does - sgibson don't forget to fill this in.
   * 
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  public class ActionRequestDAOJpaImpl implements ActionRequestDAO {
      
      @PersistenceContext(name = "kew-unit")
      private EntityManager entityManager;
  
      /**
  	 * @return the entityManager
  	 */
  	public EntityManager getEntityManager() {
  		return this.entityManager;
  	}
  
  	/**
  	 * @param entityManager the entityManager to set
  	 */
  	public void setEntityManager(EntityManager entityManager) {
  		this.entityManager = entityManager;
  	}
  
  	public void delete(String actionRequestId) {
          ActionRequestValue actionRequestValue = (ActionRequestValue) entityManager.find(ActionRequestValue.class, actionRequestId);
          entityManager.remove(actionRequestValue);
      }
  
      public void deleteByDocumentId(String documentId) {
          // FIXME should be jpa bulk update?
          Query query = entityManager.createNamedQuery("ActionRequestValue.FindByDocumentId");
          query.setParameter("documentId", documentId);
          List<ActionRequestValue> actionRequestValues = (List<ActionRequestValue>) query.getSingleResult();
          for(ActionRequestValue arv : actionRequestValues) {
              entityManager.remove(arv);
          }
      }
  
      public boolean doesDocumentHaveUserRequest(String principalId, String documentId) {
          Query query = entityManager.createNamedQuery("ActionRequestValue.GetUserRequestCount");
          query.setParameter("principalId", principalId);
          query.setParameter("documentId", documentId);
          query.setParameter("recipientTypeCd", RecipientType.PRINCIPAL.getCode());
          query.setParameter("currentIndicator", Boolean.TRUE);
          
          return ((Long)query.getSingleResult()) > 0;
      }
  
      public List<?> findActivatedByGroup(Group group) {
          
          Query query = entityManager.createNamedQuery("ActionRequestValue.FindActivatedByGroup");
          query.setParameter("groupId", group.getId());
          query.setParameter("currentIndicator", Boolean.TRUE);
          query.setParameter("status", ActionRequestStatus.ACTIVATED.getCode());
          
          return query.getResultList();
      }
  
      public List<ActionRequestValue> findAllByDocId(String documentId) {
          Query query = entityManager.createNamedQuery("ActionRequestValue.FindAllByDocId");
          query.setParameter("documentId", documentId);
          query.setParameter("currentIndicator", Boolean.TRUE);
         
         return query.getResultList();
     }
 
     public List<ActionRequestValue> findAllPendingByDocId(String documentId) {
         Query query = entityManager.createNamedQuery("ActionRequestValue.FindAllPendingByDocId");
         query.setParameter("documentId", documentId);
         query.setParameter("currentIndicator", Boolean.TRUE);
         query.setParameter("actionRequestStatus1", ActionRequestStatus.INITIALIZED.getCode());
         query.setParameter("actionRequestStatus2", ActionRequestStatus.ACTIVATED.getCode());
         
         return query.getResultList();
     }
 
     @SuppressWarnings("unchecked")
     public List<ActionRequestValue> findAllRootByDocId(String documentId) {
         Query query = entityManager.createNamedQuery("ActionRequestValue.FindAllRootByDocId");
         query.setParameter("documentId", documentId);
         query.setParameter("currentIndicator", Boolean.TRUE);
         
         return (List<ActionRequestValue>) query.getResultList();
     }
 
     public List<ActionRequestValue> findByDocumentIdIgnoreCurrentInd(String documentId) {
         Query query = entityManager.createNamedQuery("ActionRequestValue.FindByDocumentId");
         query.setParameter("documentId", documentId);
         
         return query.getResultList();
     }
 
     @SuppressWarnings("unchecked")
     public List<ActionRequestValue> findByStatusAndDocId(String statusCd, String documentId) {
         Query query = entityManager.createNamedQuery("ActionRequestValue.FindByStatusAndDocId");
         query.setParameter("documentId", documentId);
         query.setParameter("status", statusCd);
         query.setParameter("currentIndicator", Boolean.TRUE);
         
         return (List<ActionRequestValue>)query.getResultList();
     }
 
     public List<ActionRequestValue> findPendingByActionRequestedAndDocId(String actionRequestedCd, String documentId) {
         Query query = entityManager.createNamedQuery("ActionRequestValue.FindPendingByActionRequestedAndDocId");
         query.setParameter("documentId", documentId);
         query.setParameter("currentIndicator", Boolean.TRUE);
         query.setParameter("actionRequested", actionRequestedCd);
         query.setParameter("actionRequestStatus1", ActionRequestStatus.INITIALIZED.getCode());
         query.setParameter("actionRequestStatus2", ActionRequestStatus.ACTIVATED.getCode());
         
         return query.getResultList();
     }
 
     public List<ActionRequestValue> findPendingByDocIdAtOrBelowRouteLevel(String documentId, Integer routeLevel) {
         Query query = entityManager.createNamedQuery("ActionRequestValue.FindPendingByDocIdAtOrBelowRouteLevel");
         query.setParameter("documentId", documentId);
         query.setParameter("currentIndicator", Boolean.TRUE);
         query.setParameter("routeLevel", routeLevel);
         query.setParameter("status", ActionRequestStatus.DONE.getCode());
         
         return query.getResultList();
     }
 
     public List<ActionRequestValue> findPendingByResponsibilityIds(Collection responsibilityIds) {
         if (responsibilityIds == null || responsibilityIds.size() == 0)
             return Collections.emptyList();
 
         Query query = entityManager.createNamedQuery("ActionRequestValue.FindPendingByDocIdAtOrBelowRouteLevel");
         query.setParameter("responsibilityIds", responsibilityIds);
         
         return query.getResultList();
     }
 
     public List<ActionRequestValue> findPendingRootRequestsByDocIdAtOrBelowRouteLevel(String documentId, Integer routeLevel) {
         Query query = entityManager.createNamedQuery("ActionRequestValue.FindPendingRootRequestsByDocIdAtOrBelowRouteLevel");
         query.setParameter("documentId", documentId);
         query.setParameter("currentIndicator", Boolean.TRUE);
         query.setParameter("status", ActionRequestStatus.DONE.getCode());
         query.setParameter("routeLevel", routeLevel);
         
         return query.getResultList();
     }
 
     public List<ActionRequestValue> findPendingRootRequestsByDocIdAtRouteLevel(String documentId, Integer routeLevel) {
         Query query = entityManager.createNamedQuery("ActionRequestValue.FindPendingRootRequestsByDocIdAtRouteLevel");
         query.setParameter("documentId", documentId);
         query.setParameter("currentIndicator", Boolean.TRUE);
         query.setParameter("status", ActionRequestStatus.DONE.getCode());
         query.setParameter("routeLevel", routeLevel);
         
         return query.getResultList();
     }
 
     public List<ActionRequestValue> findPendingRootRequestsByDocIdAtRouteNode(String documentId, String nodeInstanceId) {
         Query query = entityManager.createNamedQuery("ActionRequestValue.FindPendingRootRequestsByDocIdAtRouteNode");
         query.setParameter("documentId", documentId);
         query.setParameter("currentIndicator", Boolean.TRUE);
         query.setParameter("routeNodeInstanceId", nodeInstanceId);
         query.setParameter("actionRequestStatus1", ActionRequestStatus.INITIALIZED.getCode());
         query.setParameter("actionRequestStatus2", ActionRequestStatus.ACTIVATED.getCode());
         
         return query.getResultList();
     }
 
     public List<ActionRequestValue> findPendingRootRequestsByDocumentType(String documentTypeId) {
         Query query = entityManager.createNamedQuery("ActionRequestValue.FindPendingRootRequestsByDocumentType");
         query.setParameter("documentTypeId", documentTypeId);
         query.setParameter("currentIndicator", Boolean.TRUE);
         query.setParameter("actionRequestStatus1", ActionRequestStatus.INITIALIZED.getCode());
         query.setParameter("actionRequestStatus2", ActionRequestStatus.ACTIVATED.getCode());
         
         return query.getResultList();
     }
 
     public List<ActionRequestValue> findRootRequestsByDocIdAtRouteNode(String documentId, String nodeInstanceId) {
         Query query = entityManager.createNamedQuery("ActionRequestValue.FindRootRequestsByDocIdAtRouteNode");
         query.setParameter("documentId", documentId);
         query.setParameter("currentIndicator", Boolean.TRUE);
         query.setParameter("routeNodeInstanceId", nodeInstanceId);
         
         return query.getResultList();
     }
 
     public ActionRequestValue getActionRequestByActionRequestId(String actionRequestId) {
         return entityManager.find(ActionRequestValue.class, actionRequestId);
     }
 
     @SuppressWarnings("unchecked")
     public List<String> getRequestGroupIds(String documentId) {
         Query query = entityManager.createNamedQuery("ActionRequestValue.GetRequestGroupIds");
         query.setParameter("documentId", documentId);
         query.setParameter("currentIndicator", Boolean.TRUE);
         query.setParameter("recipientTypeCd", RecipientType.GROUP.getCode());
         
         return query.getResultList();
     }
 
     public void saveActionRequest(ActionRequestValue actionRequest) {
         if ( actionRequest.getAnnotation() != null && actionRequest.getAnnotation().length() > 2000 ) {
         	actionRequest.setAnnotation( StringUtils.abbreviate(actionRequest.getAnnotation(), 2000) );
         }
     	if(actionRequest.getActionRequestId() == null) {
         	loadDefaultValues(actionRequest);
         	entityManager.persist(actionRequest);
         }else{
             OrmUtils.merge(entityManager, actionRequest);
         }
     }
     private void loadDefaultValues(ActionRequestValue actionRequest) {
         checkNull(actionRequest.getActionRequested(), "action requested");
         checkNull(actionRequest.getResponsibilityId(), "responsibility ID");
         checkNull(actionRequest.getRouteLevel(), "route level");
         checkNull(actionRequest.getDocVersion(), "doc version");
         if (actionRequest.getForceAction() == null) {
             actionRequest.setForceAction(Boolean.FALSE);
         }
         if (actionRequest.getStatus() == null) {
             actionRequest.setStatus(ActionRequestStatus.INITIALIZED.getCode());
         }
         if (actionRequest.getPriority() == null) {
             actionRequest.setPriority(KewApiConstants.ACTION_REQUEST_DEFAULT_PRIORITY);
         }
         if (actionRequest.getCurrentIndicator() == null) {
             actionRequest.setCurrentIndicator(true);
         }
         actionRequest.setCreateDate(new Timestamp(System.currentTimeMillis()));
     }
     //TODO Runtime might not be the right thing to do here...
     private void checkNull(Serializable value, String valueName) throws RuntimeException {
         if (value == null) {
             throw new RuntimeException("Null value for " + valueName);
         }
     }
     
 	public List<ActionRequestValue> findActivatedByGroup(String groupId) {
 		Query query = entityManager.createNamedQuery("ActionRequestValue.FindByStatusAndGroupId");
         query.setParameter("status", ActionRequestStatus.ACTIVATED.getCode());
         query.setParameter("currentIndicator", Boolean.TRUE);
         query.setParameter("groupId", groupId);
         
         return query.getResultList();
 	}
 
     @Override
     public ActionRequestValue getRoleActionRequestByActionTakenId(String actionTakenId) {
         throw new UnsupportedOperationException("not yet implemented");
     }
 }