/*

  * 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.kns.authorization;

 import java.util.ArrayList;

 import java.util.List;

 import org.apache.commons.lang.StringUtils;

 import org.kuali.rice.kim.bo.Role;

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

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

 import org.kuali.rice.kim.bo.types.dto.AttributeSet;

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

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

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

 /**

  * 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 IdentityManagementService identityManagementService;

         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(AttributeSet qualification) {

                 return getIdentityManagementService().getPermissionAssigneesForTemplateName(permissionTemplateNamespace, permissionTemplateName, qualification, qualification);

         }

         /**

          * This overridden method ...

          * 

          * @see org.kuali.rice.kim.service.support.impl.RoleTypeServiceBase#getPrincipalIdsFromApplicationRole(java.lang.String, java.lang.String, org.kuali.rice.kim.bo.types.dto.AttributeSet)

          */

         @Override

     public List<RoleMembershipInfo> getRoleMembersFromApplicationRole(String namespaceCode, String roleName, AttributeSet qualification) {

                 List<PermissionAssigneeInfo> permissionAssignees = getPermissionAssignees(qualification);

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

                 for (PermissionAssigneeInfo permissionAssigneeInfo : permissionAssignees) {

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

                             members.add( new RoleMembershipInfo( null/*roleId*/, null, permissionAssigneeInfo.getPrincipalId(), Role.PRINCIPAL_MEMBER_TYPE, null));

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

                 members.add( new RoleMembershipInfo( null/*roleId*/, null, permissionAssigneeInfo.getGroupId(), Role.GROUP_MEMBER_TYPE, null));

                         }

                 }

                 return members;

         }

     /***

      * @see org.kuali.rice.kim.service.support.impl.RoleTypeServiceBase#hasApplicationRole(java.lang.String, java.util.List, java.lang.String, java.lang.String, org.kuali.rice.kim.bo.types.dto.AttributeSet)

      */

     @Override

     public boolean hasApplicationRole(

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

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

             return getIdentityManagementService().isAuthorizedByTemplateName(principalId,permissionTemplateNamespace, permissionTemplateName, qualification, qualification);    

         }

     /**

      * @return the documentService

      */

     protected IdentityManagementService getIdentityManagementService(){

         if (identityManagementService == null ) {

                 identityManagementService = KIMServiceLocator.getIdentityManagementService();

         }

         return identityManagementService;

     }

 }