/**
    * Copyright 2013 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.
   *
   * Created by David Yin on 3/25/13
   */
  package org.kuali.student.enrollment.class2.courseoffering.keyvalue;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.rice.core.api.util.ConcreteKeyValue;
  import org.kuali.rice.core.api.util.KeyValue;
  import org.kuali.rice.krad.uif.control.UifKeyValuesFinderBase;
  import org.kuali.rice.krad.uif.view.ViewModel;
  import org.kuali.student.enrollment.class2.courseoffering.util.CourseOfferingManagementUtil;
  import org.kuali.student.enrollment.class2.courseoffering.form.CourseOfferingManagementForm;
  import org.kuali.student.enrollment.class2.courseoffering.dto.ActivityOfferingClusterWrapper;
  import org.kuali.student.enrollment.class2.courseoffering.util.CourseOfferingResourceLoader;
  import org.kuali.student.enrollment.courseoffering.service.CourseOfferingService;
  import org.kuali.student.r2.common.util.ContextUtils;
  import org.kuali.student.r2.core.class1.type.service.TypeService;
  import org.kuali.student.r2.lum.course.service.CourseService;
  
  import java.io.Serializable;
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * This class provides a key value finder for Activity Offering Clusters for the Create Activity Offering ui
   *
   * @author Kuali Student Team
   */
  public class ClustersForCreateAOKeyValues extends UifKeyValuesFinderBase implements Serializable {
      @Override
      public List<KeyValue> getKeyValues(ViewModel model) {
          List<KeyValue> keyValues = new ArrayList<KeyValue>();
          FormatsForCreateAOKeyValues formatsForCreateAOKeyValues = new FormatsForCreateAOKeyValues();
          CourseOfferingManagementForm coForm = (CourseOfferingManagementForm) model;
          String formatOfferingId = coForm.getFormatOfferingIdForNewAO();
          coForm.setHasAOCluster(false);
          //If there is no selected format and the CO has no formats, return an  empty list
          if (StringUtils.isEmpty(formatOfferingId)) {
              //  Just return if the CO has no formats (e.g. it was just created).
              if (coForm.getFoId2aoTypeMap().isEmpty()) {
                  return keyValues;
              }
              formatOfferingId = formatsForCreateAOKeyValues.getFirstKey(model);
          }
  
          if (!StringUtils.isEmpty(formatOfferingId)) {
              try {
                  //Grab the clusters corresponding to the selected format id (or all if no selection was made)
                  List<ActivityOfferingClusterWrapper> clusters = new ArrayList<ActivityOfferingClusterWrapper>();
                  for (ActivityOfferingClusterWrapper cluster : coForm.getClusterResultList()) {
                      if (StringUtils.isEmpty(formatOfferingId) || formatOfferingId.equals(cluster.getFormatOfferingId())) {
                          clusters.add(cluster);
                      }
                  }
  
                  //if there are clusters for the given FO, display them in the dropdown, otherwise create a default cluster to display
                  if (!clusters.isEmpty()) {
                      for (ActivityOfferingClusterWrapper cluster : clusters) {
                          keyValues.add(new ConcreteKeyValue(cluster.getAoCluster().getId()==null?"":cluster.getAoCluster().getId(), cluster.getAoCluster().getPrivateName()));
                          coForm.setHasAOCluster(true);
                      }
                  } else {
                      keyValues.add(new ConcreteKeyValue("", CourseOfferingManagementUtil.getCourseOfferingServiceFacade().getDefaultClusterNamePerCO(coForm.getCurrentCourseOfferingWrapper().getCourseOfferingId(), ContextUtils.getContextInfo())));
                  }
              } catch (Exception e) {
                  throw new RuntimeException(e);
              }
          }
  
          return keyValues;
      }
  
      protected CourseService getCourseService() {
          return CourseOfferingResourceLoader.loadCourseService();
      }
  
      protected TypeService getTypeService() {
          return CourseOfferingResourceLoader.loadTypeService();
      }
  
      protected CourseOfferingService getCourseOfferingService() {
          return CourseOfferingResourceLoader.loadCourseOfferingService();
      }
  
  
  }