/*

  * Copyright 2008 The Kuali Foundation

  *

  * Licensed under the Educational Community License, Version 1.0 (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/ecl1.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.student.lum.course.service.assembler;

 import org.kuali.student.common.util.UUIDHelper;

 import org.kuali.student.core.assembly.BOAssembler;

 import org.kuali.student.core.assembly.BaseDTOAssemblyNode;

 import org.kuali.student.core.assembly.BaseDTOAssemblyNode.NodeOperation;

 import org.kuali.student.core.assembly.data.AssemblyException;

 import org.kuali.student.lum.course.dto.ActivityInfo;

 import org.kuali.student.lum.lu.dto.CluInfo;

 import org.kuali.student.lum.lu.service.LuService;

 /**

  * Assembles/Disassembles ActivityInfo DTO from/To CluInfo 

  * 

  * @author Kuali Student Team

  *

  */

 public class ActivityAssembler implements BOAssembler<ActivityInfo, CluInfo> {

     private LuService luService;

         @Override

         public ActivityInfo assemble(CluInfo clu, ActivityInfo activity, boolean shallowBuild) {

                 if(clu == null){

                         return null;

                 }

                 ActivityInfo activityInfo = (null != activity) ? activity : new ActivityInfo();

                 activityInfo.setId(clu.getId());

                 activityInfo.setActivityType(clu.getType());

                 activityInfo.setState(clu.getState());

                 activityInfo.setDefaultEnrollmentEstimate(clu.getDefaultEnrollmentEstimate());

                 activityInfo.setDuration(clu.getStdDuration());

                 activityInfo.setContactHours(clu.getIntensity());

                 activityInfo.setMetaInfo(clu.getMetaInfo());

         activityInfo.setAttributes(clu.getAttributes());

                 return activityInfo;

         }

         @Override

         public BaseDTOAssemblyNode<ActivityInfo,CluInfo> disassemble(

                         ActivityInfo activity, NodeOperation operation) throws AssemblyException {

                 if (activity==null) {

                         //FIXME Unsure now if this is an exception or just return null or empty assemblyNode 

                         throw new AssemblyException("Activity can not be null");

                 }

                 if (NodeOperation.CREATE != operation && null == activity.getId()) {

                         throw new AssemblyException("Activity's id can not be null");

                 }

                 BaseDTOAssemblyNode<ActivityInfo,CluInfo> result = new BaseDTOAssemblyNode<ActivityInfo,CluInfo>(this);

                 CluInfo clu;

         try {

             clu = (NodeOperation.UPDATE == operation) ? luService.getClu(activity.getId()) : new CluInfo();

         } catch (Exception e) {

             throw new AssemblyException("Error retrieving activity learning unit during update", e);

         }

                 //Copy all fields 

                 clu.setId(UUIDHelper.genStringUUID(activity.getId()));//Create the id if it's not there already(important for creating relations)

                 clu.setType(activity.getActivityType());

                 clu.setState(activity.getState());

                 clu.setDefaultEnrollmentEstimate(activity.getDefaultEnrollmentEstimate());

                 clu.setStdDuration(activity.getDuration());

                 clu.setIntensity(activity.getContactHours());

                 clu.setMetaInfo(activity.getMetaInfo());

                 clu.setAttributes(activity.getAttributes());

                 //Add the Clu to the result 

                 result.setNodeData(clu);

                 // Add refernce to Activity

                 result.setBusinessDTORef(activity);

                 result.setOperation(operation);

                 return result;

         }

     public void setLuService(LuService luService) {

         this.luService = luService;

     }

     public LuService getLuService() {

         return luService;

     }

 }