content: /*
   *  Licensed to the Apache Software Foundation (ASF) under one
   *  or more contributor license agreements.  See the NOTICE file
   *  distributed with this work for additional information
   *  regarding copyright ownership.  The ASF licenses this file
   *  to you under the Apache 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.apache.org/licenses/LICENSE-2.0
   *
   *  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.apache.causeway.viewer.restfulobjects.viewer.resources;
  
  import org.apache.causeway.applib.services.iactnlayer.InteractionContext;
  import org.apache.causeway.viewer.restfulobjects.applib.JsonRepresentation;
  import org.apache.causeway.viewer.restfulobjects.applib.Rel;
  import org.apache.causeway.viewer.restfulobjects.applib.RepresentationType;
  import org.apache.causeway.viewer.restfulobjects.rendering.IResourceContext;
  import org.apache.causeway.viewer.restfulobjects.rendering.LinkBuilder;
  import org.apache.causeway.viewer.restfulobjects.rendering.LinkFollowSpecs;
  import org.apache.causeway.viewer.restfulobjects.rendering.ReprRendererAbstract;
  
  public class UserReprRenderer
  extends ReprRendererAbstract<InteractionContext> {
  
      UserReprRenderer(final IResourceContext resourceContext, final LinkFollowSpecs linkFollower, final JsonRepresentation representation) {
          super(resourceContext, linkFollower, RepresentationType.USER, representation);
      }
  
      @Override
      public UserReprRenderer with(final InteractionContext authentication) {
          representation.mapPutString("userName", authentication.getUser().name());
          final JsonRepresentation roles = JsonRepresentation.newArray();
  
          authentication.getUser().streamRoleNames()
          .forEach(roles::arrayAdd);
  
          representation.mapPutJsonRepresentation("roles", roles);
          return this;
      }
  
      @Override
      public JsonRepresentation render() {
          if (includesSelf) {
              addLinkToSelf();
              addLinkToUp();
              addLinkToLogout();
          }
          getExtensions();
          return representation;
      }
  
      private void addLinkToSelf() {
          final JsonRepresentation link = LinkBuilder.newBuilder(getResourceContext(), Rel.SELF.getName(), RepresentationType.USER, "user").build();
  
          final LinkFollowSpecs linkFollower = getLinkFollowSpecs().follow("links");
          if (linkFollower.matches(link)) {
              final UserReprRenderer renderer = new UserReprRenderer(getResourceContext(), linkFollower, JsonRepresentation.newMap());
              renderer.with(getResourceContext().getInteractionService().currentInteractionContextElseFail());
              link.mapPutJsonRepresentation("value", renderer.render());
          }
  
          getLinks().arrayAdd(link);
      }
  
      private void addLinkToUp() {
          final JsonRepresentation link = LinkBuilder.newBuilder(resourceContext, Rel.UP.getName(), RepresentationType.HOME_PAGE, "").build();
  
          final LinkFollowSpecs linkFollower = getLinkFollowSpecs().follow("links");
          if (linkFollower.matches(link)) {
              final HomePageReprRenderer renderer = new HomePageReprRenderer(getResourceContext(), linkFollower, JsonRepresentation.newMap());
              link.mapPutJsonRepresentation("value", renderer.render());
          }
          getLinks().arrayAdd(link);
      }
  
      private void addLinkToLogout() {
          final JsonRepresentation link = LinkBuilder.newBuilder(resourceContext, Rel.LOGOUT.getName(), RepresentationType.HOME_PAGE, "user/logout").build();
  
          getLinks().arrayAdd(link);
      }
  
  }
  