/**
    * 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.acal.service.impl;
  
  import org.apache.commons.httpclient.util.DateUtil;
  import org.kuali.student.enrollment.acal.dto.TermInfo;
  import org.kuali.student.enrollment.class2.acal.service.TermCodeGenerator;
  import org.kuali.student.r2.core.constants.AtpServiceConstants;
  
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.Map;
  
  /**
   * This class //TODO ...
   *
   * @author Kuali Student Team
   */
  public class TermCodeGeneratorImpl implements TermCodeGenerator {
      private static final String YEAR_ONLY_FORMAT_STRING = "yyyy";
  
      private static Map<String, Integer> termTypeCodeMap;
  
      static {
          Map<String, Integer> map = new HashMap<String, Integer>(4);
  
          map.put(AtpServiceConstants.ATP_WINTER_TYPE_KEY, 1);
          map.put(AtpServiceConstants.ATP_SPRING_TYPE_KEY, 2);
          map.put(AtpServiceConstants.ATP_SUMMER_TYPE_KEY, 3);
          map.put(AtpServiceConstants.ATP_FALL_TYPE_KEY, 4);
  
          termTypeCodeMap = Collections.unmodifiableMap(map);
      }
  
      @Override
      public String generateTermCode(TermInfo term) {
          // if the term is not of a type that is handled by the defined formula, return null, since the value for the atp code is undefined at that point
          if(!termTypeCodeMap.containsKey(term.getTypeKey())) {
              return null;
          }
  
          StringBuilder result = new StringBuilder(DateUtil.formatDate(term.getStartDate(), YEAR_ONLY_FORMAT_STRING));
  
          result.append(termTypeCodeMap.get(term.getTypeKey()).toString());
  
          return result.toString();
      }
  }