/**

  * Copyright 2005-2011 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.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.kim.impl.group;

 import org.apache.commons.lang.StringUtils;

 import org.kuali.rice.core.api.criteria.Predicate;

 import org.kuali.rice.core.api.criteria.PredicateUtils;

 import org.kuali.rice.core.api.criteria.QueryByCriteria;

 import org.kuali.rice.kim.api.KimConstants;

 import org.kuali.rice.kim.api.group.Group;

 import org.kuali.rice.kim.api.group.GroupQueryResults;

 import org.kuali.rice.kim.api.group.GroupService;

 import org.kuali.rice.kim.api.services.KimApiServiceLocator;

 import org.kuali.rice.kim.impl.role.RoleBo;

 import org.kuali.rice.kim.impl.role.RoleDao;

 import org.kuali.rice.kim.impl.services.KimImplServiceLocator;

 import org.kuali.rice.krad.lookup.LookupableImpl;

 import org.kuali.rice.krad.util.KRADConstants;

 import org.kuali.rice.krad.web.form.LookupForm;

 import java.sql.Timestamp;

 import java.util.ArrayList;

 import java.util.Calendar;

 import java.util.HashMap;

 import java.util.List;

 import java.util.Map;

 import static org.kuali.rice.core.api.criteria.PredicateFactory.*;

 import static org.kuali.rice.core.api.criteria.PredicateFactory.and;

 import static org.kuali.rice.core.api.criteria.PredicateFactory.lessThan;

 /**

  * Custom lookupable for the {@link GroupBo} lookup to call the group service for searching

  *

  * @author Kuali Rice Team (rice.collab@kuali.org)

  */

 public class GroupLookupableImpl extends LookupableImpl {

     private static final long serialVersionUID = -3149952849854425077L;

     /**

      * Translates any search criteria on principal name to member id and active data, then calls group service to

      * retrieve matching groups

      *

      * @return List<GroupBo>

      */

     @Override

     protected List<?> getSearchResults(LookupForm form, Map<String, String> searchCriteria, boolean unbounded) {

         Map<String, String> criteriaMap = new HashMap<String, String>(searchCriteria);

         QueryByCriteria.Builder criteria = QueryByCriteria.Builder.create();

         if (!criteriaMap.isEmpty()) {

             List<Predicate> predicates = new ArrayList<Predicate>();

             //principalId doesn't exist on 'Group'.  Lets do this predicate conversion separately

             if (StringUtils.isNotBlank(criteriaMap.get(KimConstants.UniqueKeyConstants.PRINCIPAL_NAME))) {

                 String principalId = KimApiServiceLocator.getIdentityService().getPrincipalByPrincipalName(

                         criteriaMap.get(KimConstants.UniqueKeyConstants.PRINCIPAL_NAME)).getPrincipalId();

                 Timestamp currentTime = new Timestamp(Calendar.getInstance().getTimeInMillis());

                 predicates.add(and(equal("members.memberId", principalId), equal("members.typeCode",

                         KimConstants.KimGroupMemberTypes.PRINCIPAL_MEMBER_TYPE.getCode()), and(or(isNull(

                         "members.activeFromDateValue"), greaterThanOrEqual("members.activeFromDateValue", currentTime)),

                         or(isNull("members.activeToDateValue"), lessThan("members.activeToDateValue", currentTime)))));

             }

             criteriaMap.remove(KimConstants.UniqueKeyConstants.PRINCIPAL_NAME);

             predicates.add(PredicateUtils.convertMapToPredicate(criteriaMap));

             criteria.setPredicates(and(predicates.toArray(new Predicate[predicates.size()])));

         }

         GroupQueryResults groupResults = getGroupService().findGroups(criteria.build());

         List<Group> groups = groupResults.getResults();

         //have to convert back to Bos :(

         List<GroupBo> groupBos = new ArrayList<GroupBo>(groups.size());

         for (Group group : groups) {

             groupBos.add(GroupBo.from(group));

         }

         return groupBos;

     }

     public GroupService getGroupService() {

         return KimApiServiceLocator.getGroupService();

     }

 }