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

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

 import org.kuali.rice.krad.maintenance.MaintenanceDocument;

 import org.kuali.rice.krad.maintenance.MaintainableImpl;

 import org.kuali.rice.krad.util.KRADConstants;

 import org.kuali.student.enrollment.acal.dto.TermInfo;

 import org.kuali.student.enrollment.acal.service.AcademicCalendarService;

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

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

 import org.kuali.student.r2.common.util.constants.AtpServiceConstants;

 import javax.xml.namespace.QName;

 import java.util.Calendar;

 import java.util.Date;

 import java.util.Map;

 public class TermInfoMaintainableImpl extends MaintainableImpl {

         private static final long serialVersionUID = 1L;        

     public final static String TERM_KEY_PREFIX = "kuali.term.";

     public final static String TYPE_KEY_PREFIX = "kuali.atp.type.";

     public final static String DEFAULT_VALUE_OF_ATP_STATE ="kuali.atp.state.Official";

     private transient AcademicCalendarService academicCalendarService;

     @Override

     public void saveDataObject() {

             System.out.println(">>In TermInfoMaintainableImpl.saveDataObject()");

         TermInfo termInfo = (TermInfo)getDataObject();

         String termKey = getTermInfoKey (termInfo);

         System.out.println(">>>termKey = "+termKey);

         termInfo.setStateKey(AtpServiceConstants.ATP_OFFICIAL_STATE_KEY);

         try{

                 if(getMaintenanceAction().equals(KRADConstants.MAINTENANCE_NEW_ACTION) ||

                 getMaintenanceAction().equals(KRADConstants.MAINTENANCE_COPY_ACTION)) {   

                         getAcademicCalendarService().createTerm(termKey, termInfo, new ContextInfo());

                 }

                 else {

                         getAcademicCalendarService().updateTerm(termKey, termInfo, new ContextInfo());

                 }

         }catch (DataValidationErrorException dvee){

         }catch (InvalidParameterException ipe){

         }catch (MissingParameterException mpe){

         }catch (OperationFailedException ofe){

         }catch (PermissionDeniedException pde){

         }catch (ReadOnlyException roe){

         }catch (DoesNotExistException dee){

         }catch (VersionMismatchException vme){

         }       

     }

     @Override

     public Object retrieveObjectForEditOrCopy(MaintenanceDocument document, Map<String, String> dataObjectKeys) {

             ContextInfo context = new ContextInfo();

             try{

                     return getAcademicCalendarService().getTerm(dataObjectKeys.get("key"), context);

         }catch (InvalidParameterException ipe){

         }catch (MissingParameterException mpe){

         }catch (OperationFailedException ofe){

         }catch (PermissionDeniedException pde){

         }catch (DoesNotExistException dee){

         }

         return null;

     }

     protected AcademicCalendarService getAcademicCalendarService() {

         if(academicCalendarService == null) {

                 academicCalendarService = (AcademicCalendarService) GlobalResourceLoader.getService(new QName("http://student.kuali.org/wsdl/acal","AcademicCalendarService"));

        }

        return academicCalendarService;

    }

     /**

      * @see org.kuali.rice.krad.maintenance.MaintainableImpl#prepareForSave()

      */

     @Override

     public void prepareForSave() {

             System.out.println (">>> in prepareForSave ");

         if (getMaintenanceAction().equalsIgnoreCase(KRADConstants.MAINTENANCE_NEW_ACTION)) {

                 TermInfo newTerm = (TermInfo)getDataObject();           

                 newTerm.setStateKey(AtpServiceConstants.ATP_OFFICIAL_STATE_KEY);

         }

         super.prepareForSave();

     }

     /*

      *  Based on Norm's suggestion at 

      *  https://wiki.kuali.org/display/STUDENT/How+to+Calculate+Keys+for+Academic+Calendar+Entities

      *  Term Keys should be 

      *  kuali.term.<yearOfStartDate>-<yearOfEndDate>.

      *  <The last part of the type key of the term selected (when split using ".") converted to lower case>

      */

    private String getTermInfoKey(TermInfo termInfo){

        String termKey = new String (TERM_KEY_PREFIX);

        String theType;

        String theTypeKey = termInfo.getTypeKey();      

        if (theTypeKey.startsWith(TYPE_KEY_PREFIX)){

                theType = theTypeKey.substring(15);

        }

        else {

                theType = theTypeKey;

        }        

        String yearOfStartDate = getYearFromDate(termInfo.getStartDate());

        String yearOfEndDate = getYearFromDate(termInfo.getEndDate());

        termKey = termKey.concat("."+yearOfStartDate+"-"+yearOfEndDate+"."+theType.toLowerCase());

        return termKey;       

    }

    private String getYearFromDate(Date date){

            Calendar cal = Calendar.getInstance();

            cal.setTime(date);

            int year = cal.get(Calendar.YEAR);

            return new Integer(year).toString();

    }

 }