/*
    * Copyright 2007 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.ole.module.cg.businessobject.lookup;
  
  import java.util.Collections;
  import java.util.List;
  import java.util.Map;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.ole.sys.context.SpringContext;
  import org.kuali.rice.kim.api.identity.Person;
  import org.kuali.rice.kim.api.identity.PersonService;
  import org.kuali.rice.kns.lookup.KualiLookupableHelperServiceImpl;
  import org.kuali.rice.krad.bo.BusinessObject;
  
  /**
   * Allows custom handling of Proposals within the lookup framework.
   */
  public class ProposalLookupableHelperServiceImpl extends KualiLookupableHelperServiceImpl {
  
      private static final String LOOKUP_USER_ID_FIELD = "lookupPerson.principalName";
      private static final String LOOKUP_UNIVERSAL_USER_ID_FIELD = "proposalProjectDirectors.principalId";
  
      private PersonService personService;
  
      /**
       * @see org.kuali.rice.kns.lookup.KualiLookupableHelperServiceImpl#getSearchResultsHelper(java.util.Map, boolean)
       */
      @Override
      protected List<? extends BusinessObject> getSearchResultsHelper(Map<String, String> fieldValues, boolean unbounded) {
          // perform the lookup on the project director object first
          if (!StringUtils.isBlank(fieldValues.get(LOOKUP_USER_ID_FIELD))) {
              Person person = getPersonService().getPersonByPrincipalName(fieldValues.get(LOOKUP_USER_ID_FIELD));
  
              // if no project directors match, we can return an empty list right now
              if (person == null) {
                  return Collections.EMPTY_LIST;
              }
              
              // place the universal ID into the fieldValues map and remove the dummy attribute
              fieldValues.put(LOOKUP_UNIVERSAL_USER_ID_FIELD, person.getPrincipalId());
              fieldValues.remove(LOOKUP_USER_ID_FIELD);
          }
  
          return super.getSearchResultsHelper(fieldValues, unbounded);
      }
  
      /**
       * @return Returns the personService.
       */
      protected PersonService getPersonService() {
          if(personService==null)
              personService = SpringContext.getBean(PersonService.class);
          return personService;
      }
  
  }