/*
    * Copyright 2007-2009 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.user;
  
  import org.kuali.rice.kim.api.identity.Person;
  import org.kuali.rice.kim.api.identity.principal.PrincipalContract;
  
  import org.kuali.rice.kim.api.services.KimApiServiceLocator;
  import org.kuali.rice.kim.api.identity.PersonService;
  import org.kuali.rice.krad.UserSession;
  
  /**
   * Provides some utility methods for translating user ID types.
   *
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  public final class UserUtils {
  
  	private static final org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(UserUtils.class);
  
  	private static PersonService personService;
  	
  	private UserUtils() {
  		throw new UnsupportedOperationException("do not call");
  	}
  	
  	public static String getIdValue(String idType, Person user) {
  	    if ("workflowId".equalsIgnoreCase(idType) || "w".equalsIgnoreCase(idType) || "principalId".equalsIgnoreCase(idType)) {
  	      return user.getPrincipalId();
  	    } else if ("authenticationId".equalsIgnoreCase(idType) || "a".equalsIgnoreCase(idType) || "principalName".equalsIgnoreCase(idType)) {
  	      return user.getPrincipalName();
  	    } else if ("emplId".equalsIgnoreCase(idType) || "e".equalsIgnoreCase(idType)) {
  	      return user.getEmployeeId();
  	    } else {
  	      LOG.error("Could not determine ID Value for given id type!" + idType);
  	    }
  	    return null;
  	  }
  	
  	public static String getTransposedName(UserSession userSession, PrincipalContract principal) {
  		Person person = getPersonService().getPerson(principal.getPrincipalId());
  		return person.getName(); //contructTransposedName(person);
  	}
  
  	/**
  	 * @return the personService
  	 */
  	public static PersonService getPersonService() {
  		if ( personService == null ) {
  			personService = KimApiServiceLocator.getPersonService();
  		}
  		return personService;
  	}
  }