/**
    * Copyright 2011 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.krms.termresolver;
  
  import org.kuali.rice.krms.api.engine.TermResolutionException;
  import org.kuali.rice.krms.api.engine.TermResolver;
  import org.kuali.student.enrollment.academicrecord.service.AcademicRecordService;
  import org.kuali.student.r2.common.dto.ContextInfo;
  import org.kuali.student.r2.common.krms.util.KSKRMSExecutionUtil;
  import org.kuali.student.r2.core.constants.KSKRMSServiceConstants;
  
  import java.util.Collections;
  import java.util.HashSet;
  import java.util.Map;
  import java.util.Set;
  
  /**
   *
   * Rule statement examples:
   * 1) Must have earned a minimum Cumulative GPA of <GPA> in <durationCount><durationType>
   *
   * @author Kuali Student Team
   */
  public class GPAForDurationTermResolver implements TermResolver<Float> {
  
      private AcademicRecordService academicRecordService;
  
      @Override
      public Set<String> getPrerequisites() {
          Set<String> prereqs = new HashSet<String>(2);
          prereqs.add(KSKRMSServiceConstants.TERM_PREREQUISITE_PERSON_ID);
          prereqs.add(KSKRMSServiceConstants.TERM_PREREQUISITE_CONTEXTINFO);
          return Collections.unmodifiableSet(prereqs);
      }
  
      @Override
      public String getOutput() {
          return KSKRMSServiceConstants.TERM_RESOLVER_GPAFORDURATION;
      }
  
      @Override
      public Set<String> getParameterNames() {
          return Collections.emptySet();//Collections.singleton(KSKRMSServiceConstants.TERM_PARAMETER_TYPE_CLU_KEY);
      }
  
      @Override
      public int getCost() {
          return 5;
      }
  
      @Override
      public Float resolve(Map<String, Object> resolvedPrereqs, Map<String, String> parameters) throws TermResolutionException {
          ContextInfo context = (ContextInfo) resolvedPrereqs.get(KSKRMSServiceConstants.TERM_PREREQUISITE_CONTEXTINFO);
          String personId = (String) resolvedPrereqs.get(KSKRMSServiceConstants.TERM_PREREQUISITE_PERSON_ID);
          //String courseId = parameters.get(KSKRMSServiceConstants.TERM_PARAMETER_TYPE_CLU_KEY);
  
          Float result = null;
          try {
              //GPAInfo cumulativeGPA = academicRecordService.getCumulativeGPA(personId, AcademicRecordServiceConstants.ACADEMIC_RECORD_CALCULATION_GPA_TYPE_KEY, context);
              //result = Float.parseFloat(cumulativeGPA.getValue());
          } catch (Exception e) {
              KSKRMSExecutionUtil.convertExceptionsToTermResolutionException(parameters, e, this);
          }
  
          return result;
      }
  
      public AcademicRecordService getAcademicRecordService() {
          return academicRecordService;
      }
  
      public void setAcademicRecordService(AcademicRecordService academicRecordService) {
          this.academicRecordService = academicRecordService;
      }
  }