package org.kuali.student.krms.termresolver;
   
   import org.kuali.rice.krms.api.engine.TermResolutionException;
   import org.kuali.rice.krms.api.engine.TermResolver;
   import org.kuali.student.enrollment.academicrecord.dto.StudentCourseRecordInfo;
   import org.kuali.student.enrollment.academicrecord.service.AcademicRecordService;
   import org.kuali.student.enrollment.courseoffering.infc.CourseOffering;
   import org.kuali.student.enrollment.courseoffering.service.CourseOfferingService;
   import org.kuali.student.krms.util.KSKRMSExecutionUtil;
  import org.kuali.student.r2.common.dto.ContextInfo;
  import org.kuali.student.r2.core.constants.KSKRMSServiceConstants;
  
  import java.util.Collections;
  import java.util.HashSet;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  
  /**
   * @author Kuali Student Team
   */
  public class CompletedCourseForTermTermResolver implements TermResolver<Boolean> {
  
      private AcademicRecordService academicRecordService;
      private CourseOfferingService courseOfferingService;
  
      private TermResolver<List<String>> cluIdsTermResolver;
  
      @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_COMPLETEDCOURSEFORTERM;
      }
  
      @Override
      public Set<String> getParameterNames() {
          Set<String> parameters = new HashSet<String>(2);
          parameters.add(KSKRMSServiceConstants.TERM_PARAMETER_TYPE_CLU_KEY);
          parameters.add(KSKRMSServiceConstants.TERM_PARAMETER_TYPE_TERM_KEY);
          return Collections.unmodifiableSet(parameters);
      }
  
      @Override
      public int getCost() {
          return 0;  //To change body of implemented methods use File | Settings | File Templates.
      }
  
      @Override
      public Boolean 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);
  
          try {
              //Retrieve the version independent clu id.
              String termId = parameters.get(KSKRMSServiceConstants.TERM_PARAMETER_TYPE_TERM_KEY);
  
              //Retrieve the version independent clu id.
              List<String> courseIds = this.getCluIdsTermResolver().resolve(resolvedPrereqs, parameters);
              for(String courseId : courseIds){
                  //Retrieve the students academic record for this version.
                  List<StudentCourseRecordInfo> courseRecords = this.getAcademicRecordService().getCompletedCourseRecordsForCourse(personId, courseId, context);
                  for (StudentCourseRecordInfo courseRecord : courseRecords){
                      CourseOffering courseOffering = this.getCourseOfferingService().getCourseOffering(courseRecord.getCourseOfferingId(), context);
                      if(termId.equals(courseOffering.getTermId())){
                          return true;
                      }
                  }
              }
          } catch (Exception e) {
              KSKRMSExecutionUtil.convertExceptionsToTermResolutionException(parameters, e, this);
          }
  
          return false;
      }
  
      public AcademicRecordService getAcademicRecordService() {
          return academicRecordService;
      }
  
      public void setAcademicRecordService(AcademicRecordService academicRecordService) {
          this.academicRecordService = academicRecordService;
      }
  
      public CourseOfferingService getCourseOfferingService() {
          return courseOfferingService;
      }
  
      public void setCourseOfferingService(CourseOfferingService courseOfferingService) {
          this.courseOfferingService = courseOfferingService;
      }
  
      public TermResolver<List<String>> getCluIdsTermResolver() {
         return cluIdsTermResolver;
     }
 
     public void setCluIdsTermResolver(TermResolver<List<String>> cluIdsTermResolver) {
         this.cluIdsTermResolver = cluIdsTermResolver;
     }
 }