/**

  * Copyright 2010 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.lum.program.server.metadata;

 import java.util.ArrayList;

 import java.util.List;

 import org.kuali.student.common.assembly.data.ConstraintMetadata;

 import org.kuali.student.common.assembly.dictionary.MetadataServiceImpl;

 import org.kuali.student.common.dictionary.dto.FieldDefinition;

 import org.kuali.student.common.dictionary.service.DictionaryService;

 import org.kuali.student.common.dto.DtoConstants.DtoState;

 import org.kuali.student.lum.lu.LUConstants;

 /**

  * This class provides metadata lookup for service dto objects.

  * 

  * @author Kuali Student Team

  */

 public class ProgramMetadataServiceImpl extends MetadataServiceImpl {

     public ProgramMetadataServiceImpl() {

                 super();

         }

         public ProgramMetadataServiceImpl(DictionaryService... dictionaryServices) {

         super(dictionaryServices);

     }

     @Override

     protected List<ConstraintMetadata> getConstraints(FieldDefinition fd, String type, String state, String nextState,

             String workflowNode, String documentTypeName) {

         List<ConstraintMetadata> constraints = new ArrayList<ConstraintMetadata>();

         ConstraintMetadata constraintMetadata = new ConstraintMetadata();

         //The nextState should not get a defaulted value when we're using Modify Program Proposal functionality.

         String nextStateValue = nextState;

         if (!LUConstants.PROPOSAL_TYPE_MAJOR_DISCIPLINE_MODIFY.equals(documentTypeName)) {

             nextStateValue = getNextState(state);

         }

         updateConstraintMetadata(constraintMetadata, fd, type, getNonNullState(state), nextStateValue, workflowNode);

         constraints.add(constraintMetadata);

         return constraints;

     }

     private String getNonNullState(String state) {

         return (null == state ? DtoState.DRAFT.toString() : state);

     }

     private String getNextState(String state) {

         if (null == state || DtoState.DRAFT.toString().equalsIgnoreCase(state)) {

             return DtoState.APPROVED.toString();

         } else if (DtoState.APPROVED.toString().equalsIgnoreCase(state)) {

             return DtoState.ACTIVE.toString();

         } else if (DtoState.ACTIVE.toString().equalsIgnoreCase(state)) {

             return DtoState.SUPERSEDED.toString();

         }

         return null;

     }

 }