/**
    * 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 10/20/13
   */
  package org.kuali.student.enrollment.class1.state.impl;
  
  import org.kuali.rice.core.api.resourceloader.GlobalResourceLoader;
  import org.kuali.student.enrollment.courseoffering.dto.ActivityOfferingInfo;
  import org.kuali.student.enrollment.courseoffering.service.CourseOfferingService;
  import org.kuali.student.enrollment.examoffering.dto.ExamOfferingInfo;
  import org.kuali.student.enrollment.examoffering.dto.ExamOfferingRelationInfo;
  import org.kuali.student.enrollment.examoffering.service.ExamOfferingService;
  import org.kuali.student.r2.common.dto.ContextInfo;
  import org.kuali.student.r2.common.exceptions.DoesNotExistException;
  import org.kuali.student.r2.common.exceptions.InvalidParameterException;
  import org.kuali.student.r2.common.exceptions.MissingParameterException;
  import org.kuali.student.r2.common.exceptions.OperationFailedException;
  import org.kuali.student.r2.common.exceptions.PermissionDeniedException;
  import org.kuali.student.r2.common.util.constants.CourseOfferingServiceConstants;
  import org.kuali.student.r2.common.util.constants.ExamOfferingServiceConstants;
  import org.kuali.student.r2.core.class1.state.service.RelatedObjectHelper;
  
  import javax.xml.namespace.QName;
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  /**
   * This class retrieves the associated activity offerings given an exam offering
   * It is for processing exam offering state constraints
   *
   * @author Kuali Student Team
   */
  public class RelatedObjectHelperEOtoAOImpl implements RelatedObjectHelper {
      private ExamOfferingService examOfferingService;
      private CourseOfferingService courseOfferingService;
  
      public RelatedObjectHelperEOtoAOImpl() {
      }
  
      @Override
      public Map<String, String> getRelatedObjectsIdAndState(String examOfferingId, ContextInfo contextInfo)
              throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException, PermissionDeniedException {
  
          Map<String, String> idsAndStatesMap = new HashMap<String, String>();
          List<ExamOfferingRelationInfo> eoRelations = this.getExamOfferingService().getExamOfferingRelationsByExamOffering(examOfferingId, contextInfo);
          if(eoRelations==null || eoRelations.isEmpty()){
              return idsAndStatesMap;
          }
  
          List<String> activityOfferingIds = new ArrayList<String>();
  
          for(ExamOfferingRelationInfo eoRelation : eoRelations){
              activityOfferingIds.addAll(eoRelation.getActivityOfferingIds());
          }
  
          if (activityOfferingIds!=null && !activityOfferingIds.isEmpty()) {
              List<ActivityOfferingInfo> aoInfoList = getCourseOfferingService().getActivityOfferingsByIds(activityOfferingIds,contextInfo);
              for(ActivityOfferingInfo activityOfferingInfo : aoInfoList) {
                  idsAndStatesMap.put(activityOfferingInfo.getId(),activityOfferingInfo.getStateKey());
              }
          }
  
          return idsAndStatesMap;
      }
  
      protected ExamOfferingService getExamOfferingService(){
          if (examOfferingService == null){
              examOfferingService = (ExamOfferingService) GlobalResourceLoader.getService(new QName(ExamOfferingServiceConstants.NAMESPACE, ExamOfferingServiceConstants.SERVICE_NAME_LOCAL_PART));
          }
          return  examOfferingService;
      }
  
      protected CourseOfferingService getCourseOfferingService(){
          if (courseOfferingService == null){
              courseOfferingService = (CourseOfferingService) GlobalResourceLoader.getService(new QName(CourseOfferingServiceConstants.NAMESPACE, CourseOfferingServiceConstants.SERVICE_NAME_LOCAL_PART));
          }
          return  courseOfferingService;
      }
  }