/*

  * Copyright 2007-2008 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.opensource.org/licenses/ecl2.php

  *

  * 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.rice.krad.service.impl;

 import org.apache.commons.lang.StringUtils;

 import org.kuali.rice.kim.api.permission.Permission;

 import org.kuali.rice.kim.impl.permission.PermissionBo;

 import org.kuali.rice.kim.service.support.impl.KimPermissionTypeServiceBase;

 import org.kuali.rice.kim.util.KimConstants;

 import java.util.ArrayList;

 import java.util.List;

 import java.util.Map;

 /**

  * @author Kuali Rice Team (rice.collab@kuali.org)

  */

 public class NamespacePermissionTypeServiceImpl extends

                 KimPermissionTypeServiceBase {

         private Boolean exactMatchPriority = true;

         {

 //                requiredAttributes.add(KimAttributes.NAMESPACE_CODE);

         }

         /**

          * Check for entries that match the namespace.

          * 

          * By default, this method will return all exact matches if any exist, and it will only return partial matches if there are no exact matches.

          * i.e. KR-NS will have priority over KR-*

          * 

      * If ExactMatchPriority is false, then this method will return all exact AND partial matching permissions.  By default, ExactMatchPriority will be set to true.

          */

         @Override

         protected List<Permission> performPermissionMatches(Map<String, String> requestedDetails, List<Permission> permissionsList) {

                 List<Permission> matchingPermissions = new ArrayList<Permission>();

                 String requestedNamespaceCode = requestedDetails.get(KimConstants.AttributeConstants.NAMESPACE_CODE);

                 // Add all exact matches to the list 

                 for ( Permission permission : permissionsList ) {

             PermissionBo bo = PermissionBo.from(permission);

                         String permissionNamespaceCode = bo.getDetails().get(KimConstants.AttributeConstants.NAMESPACE_CODE);

                         if ( StringUtils.equals(requestedNamespaceCode, permissionNamespaceCode ) ) {

                                 matchingPermissions.add(permission);

                         } 

                 }

                 // Add partial matches to the list if there are no exact matches or if exactMatchPriority is false

                 if ((exactMatchPriority && matchingPermissions.isEmpty()) || (!(exactMatchPriority))) {

                         for ( Permission kpi : permissionsList ) {

                 PermissionBo bo = PermissionBo.from(kpi);

                                 String permissionNamespaceCode = bo.getDetails().get(KimConstants.AttributeConstants.NAMESPACE_CODE);

                                 if ( requestedNamespaceCode != null

                                          && permissionNamespaceCode != null

                                          && (!( StringUtils.equals(requestedNamespaceCode, permissionNamespaceCode ))) 

                                          && requestedNamespaceCode.matches(permissionNamespaceCode.replaceAll("\\*", ".*") ) ) {

                                                  matchingPermissions.add(kpi);

                                 }

                         }

                 }

         return matchingPermissions;

         }

         public Boolean getExactMatchPriority() {

                 return this.exactMatchPriority;

         }

         public void setExactMatchPriority(Boolean exactMatchPriority) {

                 this.exactMatchPriority = exactMatchPriority;

         }

 }