/*

  * 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.authorization;

 import org.apache.commons.lang.StringUtils;

 import org.kuali.rice.kim.api.role.Role;

 import org.kuali.rice.kim.api.role.RoleMembership;

 import org.kuali.rice.kim.api.services.KimApiServiceLocator;

 import org.kuali.rice.kim.bo.role.dto.PermissionAssigneeInfo;

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

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

 import java.util.ArrayList;

 import java.util.HashMap;

 import java.util.List;

 import java.util.Map;

 /**

  * This is a description of what this class does - wliang don't forget to fill this in.

  *

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

  */

 public class PermissionDerivedRoleTypeServiceImpl extends KimDerivedRoleTypeServiceBase {

         private static PermissionService permissionService;

         private String permissionTemplateNamespace;

         private String permissionTemplateName;

         /**

          * @return the permissionTemplateNamespace

          */

         public String getPermissionTemplateNamespace() {

                 return this.permissionTemplateNamespace;

         }

         /**

          * @param permissionTemplateNamespace the permissionTemplateNamespace to set

          */

         public void setPermissionTemplateNamespace(String permissionTemplateNamespace) {

                 this.permissionTemplateNamespace = permissionTemplateNamespace;

         }

         /**

          * @return the permissionTemplateName

          */

         public String getPermissionTemplateName() {

                 return this.permissionTemplateName;

         }

         /**

          * @param permissionTemplateName the permissionTemplateName to set

          */

         public void setPermissionTemplateName(String permissionTemplateName) {

                 this.permissionTemplateName = permissionTemplateName;

         }

         protected List<PermissionAssigneeInfo> getPermissionAssignees(Map<String, String> qualification) {

                 return getPermissionService().getPermissionAssigneesForTemplateName(permissionTemplateNamespace, permissionTemplateName, new HashMap<String, String>(qualification),  new HashMap<String, String>(qualification));

         }

     @Override

     public List<RoleMembership> getRoleMembersFromApplicationRole(String namespaceCode, String roleName, Map<String, String> qualification) {

         List<PermissionAssigneeInfo> permissionAssignees = getPermissionAssignees(qualification);

         List<RoleMembership> members = new ArrayList<RoleMembership>();

         for (PermissionAssigneeInfo permissionAssigneeInfo : permissionAssignees) {

             if (StringUtils.isNotBlank(permissionAssigneeInfo.getPrincipalId())) {

                 members.add(RoleMembership.Builder.create(null/*roleId*/, null, permissionAssigneeInfo.getPrincipalId(), Role.PRINCIPAL_MEMBER_TYPE, null).build());

             } else if (StringUtils.isNotBlank(permissionAssigneeInfo.getGroupId())) {

                 members.add(RoleMembership.Builder.create(null/*roleId*/, null, permissionAssigneeInfo.getGroupId(), Role.GROUP_MEMBER_TYPE, null).build());

             }

         }

         return members;

     }

     @Override

     public boolean hasApplicationRole(

             String principalId, List<String> groupIds, String namespaceCode, String roleName, Map<String, String> qualification){

         // FIXME: dangerous - data changes could cause an infinite loop - should add thread-local to trap state and abort

         return getPermissionService().isAuthorizedByTemplateName(principalId, permissionTemplateNamespace, permissionTemplateName, new HashMap<String, String>(qualification), new HashMap<String, String>(qualification));

     }

     /**

      * @return the documentService

      */

     protected PermissionService getPermissionService() {

         if (permissionService == null) {

             permissionService = KimApiServiceLocator.getPermissionService();

         }

         return permissionService;

     }

 }