/**
    * Copyright 2005-2014 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.krad.service.impl;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.core.api.criteria.PredicateFactory;
  import org.kuali.rice.core.api.criteria.QueryByCriteria;
  import org.kuali.rice.core.api.criteria.QueryResults;
  import org.kuali.rice.kim.api.group.Group;
  import org.kuali.rice.kim.api.services.KimApiServiceLocator;
  import org.kuali.rice.krad.bo.AdHocRoutePerson;
  import org.kuali.rice.krad.bo.AdHocRouteRecipient;
  import org.kuali.rice.krad.bo.AdHocRouteWorkgroup;
  import org.kuali.rice.krad.data.DataObjectService;
  import org.kuali.rice.krad.document.Document;
  import org.kuali.rice.krad.service.DocumentAdHocService;
  
  /**
   * Implementation for {@link DocumentAdHocService}
   *
   * @author Kuali Rice Team (rice.collab@kuali.org)
   *
   */
  public class DocumentAdHocServiceImpl implements DocumentAdHocService {
  
  	protected DataObjectService dataObjectService;
  
  	/**
  	 * {@inheritDoc}
  	 */
  	@Override
  	public void replaceAdHocsForDocument( String documentNumber, List<AdHocRouteRecipient> adHocRoutingRecipients ) {
  		if ( StringUtils.isBlank(documentNumber) ) {
  			return;
  		}
  		dataObjectService.deleteMatching( AdHocRoutePerson.class,
  				QueryByCriteria.Builder.forAttribute("documentNumber", documentNumber).build() );
  		dataObjectService.deleteMatching( AdHocRouteWorkgroup.class,
  				QueryByCriteria.Builder.forAttribute("documentNumber", documentNumber).build() );
  
  		if ( adHocRoutingRecipients != null ) {
  			for ( AdHocRouteRecipient recipient : adHocRoutingRecipients ) {
  				recipient.setdocumentNumber(documentNumber);
  				dataObjectService.save(recipient);
  			}
  		}
  	}
  
  	/**
  	 * {@inheritDoc}
  	 */
  	@Override
  	public void addAdHocs(Document document) {
  		if ( document == null ) {
  			return;
  		}
          /* Instead of reading the doc header to see if doc is in saved status
           * its probably easier and faster to just do this all the time and
           * store a null when appropriate.
           */
          QueryResults<AdHocRoutePerson> adHocRoutePersons = dataObjectService.findMatching(AdHocRoutePerson.class,
  			    QueryByCriteria.Builder.fromPredicates(
  			    		PredicateFactory.equal("documentNumber", document.getDocumentNumber()),
  			    		PredicateFactory.equal("type", AdHocRoutePerson.PERSON_TYPE) ) );
  
          QueryResults<AdHocRouteWorkgroup> adHocRouteWorkgroups = dataObjectService.findMatching(AdHocRouteWorkgroup.class,
  			    QueryByCriteria.Builder.fromPredicates(
  			    		PredicateFactory.equal("documentNumber", document.getDocumentNumber()),
  			    		PredicateFactory.equal("type", AdHocRoutePerson.WORKGROUP_TYPE) ) );
  
          //populate group namespace and names on adHocRouteWorkgroups
          for (AdHocRouteWorkgroup adHocRouteWorkgroup : adHocRouteWorkgroups.getResults()) {
              Group group = KimApiServiceLocator.getGroupService().getGroup(adHocRouteWorkgroup.getId());
              adHocRouteWorkgroup.setRecipientName(group.getName());
              adHocRouteWorkgroup.setRecipientNamespaceCode(group.getNamespaceCode());
          }
  
          // We *must* copy these into new arrays.  The returned lists are unmodifiable.
          document.setAdHocRoutePersons( new ArrayList<AdHocRoutePerson>( adHocRoutePersons.getResults() ) );
          document.setAdHocRouteWorkgroups( new ArrayList<AdHocRouteWorkgroup>( adHocRouteWorkgroups.getResults() ) );
  	}
  
  	public void setDataObjectService(DataObjectService dataObjectService) {
 		this.dataObjectService = dataObjectService;
 	}
 
 }