package org.kuali.student.enrollment.classI.lpr.service.decorators;

 import java.util.ArrayList;

 import java.util.List;

 import org.kuali.rice.core.xml.dto.AttributeSet;

 import org.kuali.rice.kim.service.PermissionService;

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

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

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

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

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

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

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

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

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

 import org.kuali.student.r2.common.infc.HoldsPermissionService;

 import org.kuali.student.enrollment.lpr.dto.LuiPersonRelationInfo;

 import org.kuali.student.enrollment.lpr.service.LuiPersonRelationService;

 import org.kuali.student.enrollment.lpr.service.LuiPersonRelationServiceDecorator;

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

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

 /**

  * An example authorization decorator for the {@link LuiPersonRelationService}.

  * We would like to decorate the createBulkRelationshipsForPerson method here with authorization checks and custom logic

  * 

  * @author sambit

  *

  */

 public class LuiPersonRelationServiceAuthorizationDecorator extends LuiPersonRelationServiceDecorator  implements HoldsPermissionService {

         private PermissionService permissionService;

         public static final String ENRLLMENT_NAMESPACE = "KS-Enrollment";

         @Override

         public PermissionService getPermissionService() {

                 return permissionService;

         }

         @Override

         public void setPermissionService(PermissionService permissionService) {

                 this.permissionService = permissionService;

         }

         @Override

         public List<String> createBulkRelationshipsForPerson(String personId, List<String> luiIdList, String relationState, String luiPersonRelationTypeKey, LuiPersonRelationInfo luiPersonRelationInfo, ContextInfo context) throws DataValidationErrorException, AlreadyExistsException, DoesNotExistException, DisabledIdentifierException, ReadOnlyException, InvalidParameterException, MissingParameterException, OperationFailedException, PermissionDeniedException {

                 // TODO Auto-generated method stub

                 List<String> bulkRelationshipValues = new ArrayList<String>();

                 System.out.println("Inside authorization impl for createBulkRelationshipsForPerson" );

                 //Simulating unknown exception behavior

                 if(personId != null){

                         bulkRelationshipValues.addAll(nextDecorator.createBulkRelationshipsForPerson(personId, luiIdList, relationState, luiPersonRelationTypeKey, luiPersonRelationInfo, context));

                 }else {

                         throw new NullPointerException("person id is null");

                 }

                 return super.createBulkRelationshipsForPerson(personId, luiIdList, relationState, luiPersonRelationTypeKey, luiPersonRelationInfo, context);                

         }

     @Override

     public List<LuiPersonRelationInfo> findLuiPersonRelationsForLui(String luiId, ContextInfo context) throws DoesNotExistException, InvalidParameterException, MissingParameterException, OperationFailedException, PermissionDeniedException {

             return nextDecorator.findLuiPersonRelationsForLui(luiId, context);

     }

         @Override

         public List<ValidationResultInfo> validateLuiPersonRelation(String validationType,

                         LuiPersonRelationInfo luiPersonRelationInfo,

                         ContextInfo context)

                         throws DoesNotExistException,

                         MissingParameterException,

                         OperationFailedException,

                         PermissionDeniedException, 

                         InvalidParameterException {

                 // TODO Kamal - THIS METHOD NEEDS JAVADOCS

                 return super.validateLuiPersonRelation(validationType, luiPersonRelationInfo, context);

         }

           /**

      * Fake authorization method.

      *

      * @param principal

      * @param permissionName  the authorization permission

      * @param qualifier an authorization qualifier

      * @return true if authorization successful

      */

         protected boolean isAuthorized(String principal, String permissionName, String qualifier) {

                 AttributeSet permissionDetails = null;

                 AttributeSet qualifierDetails = new AttributeSet();

                 qualifierDetails.put("qualifierKey", qualifier);

                 return this.permissionService.isAuthorized(principal,

                                 ENRLLMENT_NAMESPACE,

                                 permissionName,

                                 permissionDetails,

                                 qualifierDetails);

         }

 }