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.extensions.secman.applib.user.menu;
  
  import java.util.concurrent.Callable;
  
  import jakarta.inject.Inject;
  import jakarta.inject.Named;
  import jakarta.inject.Provider;
  
  import org.springframework.context.event.EventListener;
  import org.springframework.stereotype.Component;
  
  import org.apache.causeway.applib.annotation.Action;
  import org.apache.causeway.applib.annotation.ActionLayout;
  import org.apache.causeway.applib.annotation.Domain;
  import org.apache.causeway.applib.annotation.DomainService;
  import org.apache.causeway.applib.annotation.DomainServiceLayout;
  import org.apache.causeway.applib.annotation.MemberSupport;
  import org.apache.causeway.applib.annotation.ObjectSupport;
  import org.apache.causeway.applib.annotation.PriorityPrecedence;
  import org.apache.causeway.applib.annotation.Publishing;
  import org.apache.causeway.applib.annotation.SemanticsOf;
  import org.apache.causeway.applib.services.queryresultscache.QueryResultsCache;
  import org.apache.causeway.applib.services.user.UserService;
  import org.apache.causeway.applib.services.userui.UserMenu;
  import org.apache.causeway.core.config.CausewayConfiguration;
  import org.apache.causeway.extensions.secman.applib.CausewayModuleExtSecmanApplib;
  import org.apache.causeway.extensions.secman.applib.user.dom.ApplicationUser;
  import org.apache.causeway.extensions.secman.applib.user.dom.ApplicationUserRepository;
  
  import lombok.RequiredArgsConstructor;
  
  /**
   * @since 2.0 {@index}
   */
  @Named(MeService.LOGICAL_TYPE_NAME)
  @DomainService
  @DomainServiceLayout(
          menuBar = DomainServiceLayout.MenuBar.TERTIARY
  )
  @jakarta.annotation.Priority(PriorityPrecedence.EARLY)
  @RequiredArgsConstructor(onConstructor_ = { @Inject })
  public class MeService {
  
      public static final String LOGICAL_TYPE_NAME = CausewayModuleExtSecmanApplib.NAMESPACE + ".MeService";
  
      public static abstract class PropertyDomainEvent<T> extends CausewayModuleExtSecmanApplib.PropertyDomainEvent<MeService, T> {}
      public static abstract class CollectionDomainEvent<T> extends CausewayModuleExtSecmanApplib.CollectionDomainEvent<MeService, T> {}
      public static abstract class ActionDomainEvent<T> extends CausewayModuleExtSecmanApplib.ActionDomainEvent<T> {}
  
      final ApplicationUserRepository applicationUserRepository;
      final UserService userService;
      final Provider<QueryResultsCache> queryResultsCacheProvider;
  
      @ObjectSupport public String iconName() {
          return "applicationUser";
      }
  
      @Action(
              commandPublishing = Publishing.DISABLED,
              domainEvent = me.ActionDomainEvent.class,
              executionPublishing = Publishing.DISABLED,
              semantics = SemanticsOf.SAFE
              )
      @ActionLayout(
              cssClassFa = "fa-user",
              describedAs = "Looks up ApplicationUser entity corresponding to your user account",
              //group = "Security",
              sequence = "100"
              )
      public class me{
  
          public class ActionDomainEvent extends MeService.ActionDomainEvent<me> {}
  
          @MemberSupport public ApplicationUser act() {
              return queryResultsCacheProvider.get().execute(
                      (Callable<ApplicationUser>) this::fetchMe, MeService.class, "me");
          }
  
          @Domain.Exclude protected ApplicationUser fetchMe() {
              final String myName = userService.currentUserNameElseNobody();
              return fetchMe(myName);
          }
  
          @Domain.Exclude protected ApplicationUser fetchMe(final String myName) {
              return applicationUserRepository.findOrCreateUserByUsername(myName);
          }
  
      }
  
      @Component
      @RequiredArgsConstructor
      public static class UserMenuMeActionAdvisor {
  
          final CausewayConfiguration causewayConfiguration;
  
          @EventListener(UserMenu.me.ActionDomainEvent.class)
          public void on(final UserMenu.me.ActionDomainEvent event) {
              switch (causewayConfiguration.getExtensions().getSecman().getUserMenuMeActionPolicy()) {
                  case HIDE:
                      event.hide();
                      break;
                  case DISABLE:
                      event.disable("Use security manager's action to view the current user");
                      break;
                  case ENABLE:
                      break;
              }
          }
      }
  
  }
  