/**
    * 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.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.class2.courseoffering.util.FormatOfferingConstants;
  import org.kuali.student.common.util.ContextBuilder;
  import org.kuali.student.enrollment.courseoffering.dto.FormatOfferingInfo;
  import org.kuali.student.enrollment.courseoffering.service.CourseOfferingService;
  import org.kuali.student.r2.common.dto.ContextInfo;
  import org.kuali.student.r2.common.util.ContextUtils;
  
  import java.util.ArrayList;
  import java.util.Iterator;
  import java.util.List;
  import java.util.Map;
  
  /**
   * This class provides a Lookupable implementation for Format Offerings
   *
   * @author Kuali Student Team
   */
  public class FormatOfferingInfoLookupableImpl extends LookupableImpl {
      private static final long serialVersionUID = 1L;
      public final static String COURSE_OFFER_ID = "courseOfferingId";
  
      private transient CourseOfferingService courseOfferingService;
  
      @Override
      protected List<?> getSearchResults(LookupForm lookupForm, Map<String, String> fieldValues, boolean unbounded) {
          List<FormatOfferingInfo> formatOfferingInfos = null;
  
          String typeKey = fieldValues.get(FormatOfferingConstants.FORMAT_OFFERING_TYPE_KEY);
          String courseOfferingId = fieldValues.get(ActivityOfferingConstants.ACTIVITYOFFERING_COURSE_OFFERING_ID);
          try {
              if (StringUtils.isNotBlank(courseOfferingId)) {
                  formatOfferingInfos = getCourseOfferingService().getFormatOfferingsByCourseOffering(fieldValues.get(COURSE_OFFER_ID), ContextUtils.createDefaultContextInfo());
              }  else if (StringUtils.isNotBlank(typeKey)) {
                  formatOfferingInfos = getSearchResultsByType (typeKey);
              }
          } catch (Exception e) {
              throw new RuntimeException("Error getting FormatOfferingInfo.", e);
          }
  
          return formatOfferingInfos;
      }
  
      public CourseOfferingService getCourseOfferingService() {
          if(courseOfferingService == null)
              courseOfferingService= CourseOfferingResourceLoader.loadCourseOfferingService();
          return courseOfferingService;
      }
  
      public ContextInfo getContextInfo() {
          ContextInfo contextInfo = new ContextInfo();
          if (contextInfo == null){
              contextInfo =  ContextBuilder.loadContextInfo();
          }
          return contextInfo;
      }
  
      public static int getLineNumber() {
          return Thread.currentThread().getStackTrace()[2].getLineNumber();
      }
  
      private List<FormatOfferingInfo> getSearchResultsByType (String typeKey){
          List<FormatOfferingInfo> formatOfferingInfos = null;
          try {
              QueryByCriteria.Builder qbcBuilder = QueryByCriteria.Builder.create();
              qbcBuilder.setPredicates(PredicateFactory.and(
                      PredicateFactory.equalIgnoreCase(FormatOfferingConstants.FORMAT_OFFERING_LUI_TYPE, typeKey)));
              QueryByCriteria criteria = qbcBuilder.build();
  
              List<String> listFormatOfferingIDs = getCourseOfferingService().searchForFormatOfferingIds(criteria, getContextInfo());
              if (listFormatOfferingIDs != null) {
                  String formatOfferingID = null;
                  formatOfferingInfos = new ArrayList<FormatOfferingInfo>();
                  for(Iterator i = listFormatOfferingIDs.iterator(); i.hasNext();){
                      formatOfferingID = (String) i.next();
                      formatOfferingInfos.add ((FormatOfferingInfo) getCourseOfferingService().getFormatOffering(formatOfferingID, getContextInfo()));
                 }
             }
         } catch (Exception e) {
             throw new RuntimeException("Error getting FormatOfferingInfo.getSearchResultsByType.errorLineNumber=" + getLineNumber(), e);
         }
         return formatOfferingInfos;
     }
 }