package org.kuali.student.enrollment.class2.courseoffering.service;

 import org.kuali.rice.core.api.resourceloader.GlobalResourceLoader;

 import org.kuali.rice.kns.uif.service.impl.LookupViewHelperServiceImpl;

 import org.kuali.student.enrollment.courseoffering.dto.CourseOfferingInfo;

 import org.kuali.student.enrollment.courseoffering.service.CourseOfferingService;

 import org.kuali.student.r2.common.dto.ContextInfo;

 import org.kuali.student.r2.common.exceptions.*;

 import javax.xml.namespace.QName;

 import java.util.ArrayList;

 import java.util.List;

 import java.util.Map;

 public class CourseOfferingInfoLookupViewHelperServiceImpl extends LookupViewHelperServiceImpl {

     private transient CourseOfferingService courseOfferingService;

     private static final String TERM_FIELD_NAME = "termKey";

     private static final String SUBJECT_AREA_FIELD_NAME = "subjectArea";

     private static Boolean foundValidCourseOfferings = null;

     @Override

     protected List<?> getSearchResultsWithBounding(Map<String, String> fieldValues, boolean unbounded) {

         ContextInfo context = ContextInfo.newInstance();

         String termKey = fieldValues.get(TERM_FIELD_NAME);

         String subjectArea = fieldValues.get(SUBJECT_AREA_FIELD_NAME);

         /* HACK HACK

          * Hack code! This is a temporary hack so that at least some course offerings are added to the system

          * Remove this when there is a reliable way through the UI to create course offerings

          */

         if(foundValidCourseOfferings == null) {

             try {

                 List<String> courseOfferingIds = getCourseOfferingService().getCourseOfferingIdsByTermAndSubjectArea("testTermId1", "CHEM", context);

                 foundValidCourseOfferings = !courseOfferingIds.isEmpty();

             } catch (DoesNotExistException e) {

                 throw new RuntimeException(e);

             } catch (InvalidParameterException e) {

                 throw new RuntimeException(e);

             } catch (MissingParameterException e) {

                 throw new RuntimeException(e);

             } catch (OperationFailedException e) {

                 throw new RuntimeException(e);

             } catch (PermissionDeniedException e) {

                 throw new RuntimeException(e);

             }

         }

         if(!foundValidCourseOfferings) {

             try {

                 getCourseOfferingService().createCourseOfferingFromCanonical("REFERENCECOURSECHEM131", "testTermId1", null, context);

                 getCourseOfferingService().createCourseOfferingFromCanonical("REFERENCECOURSECHEM132", "testTermId1", null, context);

                 foundValidCourseOfferings = true;

             } catch (Exception e) {

                 throw new RuntimeException(e);

             }

         }

         List<CourseOfferingInfo> courseOfferings;

         try {

             List<String> courseOfferingIds = getCourseOfferingService().getCourseOfferingIdsByTermAndSubjectArea(termKey, subjectArea, context);

             courseOfferings = new ArrayList<CourseOfferingInfo>(courseOfferingIds.size());

             for(String coId : courseOfferingIds) {

                 courseOfferings.add(getCourseOfferingService().getCourseOffering(coId, context));

             }

         } catch (DoesNotExistException e) {

             throw new RuntimeException(e);

         } catch (InvalidParameterException e) {

             throw new RuntimeException(e);

         } catch (MissingParameterException e) {

             throw new RuntimeException(e);

         } catch (OperationFailedException e) {

             throw new RuntimeException(e);

         } catch (PermissionDeniedException e) {

             throw new RuntimeException(e);

         }

         return courseOfferings;

     }

     protected CourseOfferingService getCourseOfferingService() {

         if (courseOfferingService == null) {

             courseOfferingService = (CourseOfferingService) GlobalResourceLoader.getService(new QName("http://student.kuali.org/wsdl/courseOffering", "CourseOfferingService"));

         }

         return courseOfferingService;

     }

 }