/**

  * Copyright 2005-2011 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.KimConstants;

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

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

 import java.util.ArrayList;

 import java.util.Collections;

 import java.util.List;

 import java.util.Map;

 /**

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

  */

 public class ParameterPermissionTypeServiceImpl extends

                 NamespaceWildcardAllowedAndOrStringExactMatchPermissionTypeServiceImpl {

     @Override

     protected List<String> getRequiredAttributes() {

         final List<String> attrs = new ArrayList<String>(super.getRequiredAttributes());

         attrs.add(KimConstants.AttributeConstants.PARAMETER_NAME);

         attrs.add(KimConstants.AttributeConstants.COMPONENT_NAME);

         return Collections.unmodifiableList(attrs);

     }

     @Override

     protected boolean isCheckRequiredAttributes() {

         return true;

     }

     @Override

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

         String requestedParameterName = requestedDetails.get(KimConstants.AttributeConstants.PARAMETER_NAME);

         String requestedComponentName = requestedDetails.get(KimConstants.AttributeConstants.COMPONENT_NAME);

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

         for (Permission kpi : permissionsList ) {

             PermissionBo bo = PermissionBo.from(kpi);

             String parameterName = bo.getDetails().get(KimConstants.AttributeConstants.PARAMETER_NAME);

             String componentName = bo.getDetails().get(KimConstants.AttributeConstants.COMPONENT_NAME);

             if ( (StringUtils.isBlank(parameterName)

                     || StringUtils.equals(requestedParameterName, parameterName)) 

                 &&(StringUtils.isBlank(componentName)

                         || StringUtils.equals(requestedComponentName, componentName))) {

                 matchingPermissions.add(kpi);

             }

         }

         return super.performPermissionMatches(requestedDetails, matchingPermissions);

     }    

 }