/**

  * Copyright 2012 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.osedu.org/licenses/ECL-2.0

  *

  * 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.student.enrollment.class2.courseoffering.service.impl;

 import org.apache.commons.lang.StringUtils;

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

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

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

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

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

 import org.kuali.student.enrollment.class2.courseoffering.util.ActivityOfferingConstants;

 import org.kuali.student.enrollment.class2.courseoffering.util.CourseOfferingResourceLoader;

 import org.kuali.student.enrollment.common.util.ContextBuilder;

 import org.kuali.student.enrollment.courseoffering.dto.ActivityOfferingInfo;

 import org.kuali.student.enrollment.courseoffering.service.CourseOfferingService;

 import org.kuali.student.r2.common.dto.ContextInfo;

 import org.kuali.student.r2.common.exceptions.*;

 import java.util.*;

 /**

  * This class //TODO ...

  *

  * @author Kuali Student Team

  */

 public class ActivityOfferingLookupableImpl extends LookupableImpl {

     @Override

     protected List<?> getSearchResults(LookupForm lookupForm, Map<String, String> fieldValues, boolean unbounded) {

         List<ActivityOfferingInfo> activityOfferingInfos = new ArrayList<ActivityOfferingInfo>();

         try {

             if(hasCriteria(fieldValues)){

                 QueryByCriteria qbc = buildQueryByCriteria(fieldValues);

                 activityOfferingInfos = getCourseOfferingService().searchForActivityOfferings(qbc, getContextInfo());

             }

         } catch (Exception e) {

            throw new RuntimeException(e);

         }

         return activityOfferingInfos;

     }

     private QueryByCriteria buildQueryByCriteria(Map<String, String> fieldValues){

         String aoId = fieldValues.get(ActivityOfferingConstants.ACTIVITYOFFERING_ID);

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

         if (StringUtils.isNotBlank(aoId)) {

             predicates.add(PredicateFactory.equalIgnoreCase("id", aoId));

         }

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

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

         QueryByCriteria qbc = qbcBuilder.build();

         return qbc;

     }

     private boolean hasCriteria(Map<String, String> fieldValues){

         return StringUtils.isNotBlank(fieldValues.get(ActivityOfferingConstants.ACTIVITYOFFERING_ID));

     }

     public CourseOfferingService getCourseOfferingService() {

         return CourseOfferingResourceLoader.loadCourseOfferingService();

     }

     public ContextInfo getContextInfo() {

         return ContextBuilder.loadContextInfo();

     }

 }