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.commons.services.menu;
  
  import java.util.ArrayList;
  
  import jakarta.annotation.Priority;
  import jakarta.inject.Inject;
  import jakarta.inject.Named;
  
  import org.springframework.beans.factory.annotation.Qualifier;
  import org.springframework.stereotype.Service;
  
  import org.apache.causeway.applib.annotation.DomainServiceLayout.MenuBar;
  import org.apache.causeway.applib.annotation.PriorityPrecedence;
  import org.apache.causeway.applib.layout.menubars.bootstrap.BSMenuBar;
  import org.apache.causeway.applib.services.menu.MenuBarsService;
  import org.apache.causeway.commons.collections.Can;
  import org.apache.causeway.core.metamodel.context.MetaModelContext;
  import org.apache.causeway.viewer.commons.applib.services.menu.MenuItemDto;
  import org.apache.causeway.viewer.commons.applib.services.menu.MenuUiService;
  import org.apache.causeway.viewer.commons.applib.services.menu.model.MenuDropdownBuilder;
  import org.apache.causeway.viewer.commons.applib.services.menu.model.NavbarSection;
  import org.apache.causeway.viewer.commons.applib.services.menu.model.NavbarUiModel;
  import org.apache.causeway.viewer.commons.services.CausewayModuleViewerCommonsServices;
  
  import lombok.RequiredArgsConstructor;
  
  @Service
  @Named(CausewayModuleViewerCommonsServices.NAMESPACE + ".MenuUiServiceDefault")
  @Priority(PriorityPrecedence.LATE)
  @Qualifier("Default")
  @RequiredArgsConstructor(onConstructor_ = {@Inject})
  public class MenuUiServiceDefault
  implements MenuUiService {
  
      private final MetaModelContext metaModelContext;
      private final MenuBarsService menuBarsService;
  
      @Override
      public NavbarUiModel getMenu() {
          return new NavbarUiModel(
                  buildNavBarSection(MenuBar.PRIMARY),
                  buildNavBarSection(MenuBar.SECONDARY),
                  buildNavBarSection(MenuBar.TERTIARY));
      }
  
      // -- HELPER
  
      private NavbarSection buildNavBarSection(final MenuBar menuBarSelect) {
  
          var menuBar = (BSMenuBar) menuBarsService.menuBars()
                  .menuBarFor(menuBarSelect);
  
          var topLevelEntries = new ArrayList<MenuDropdownBuilder>();
  
          _MenuItemBuilder.buildMenuItems(metaModelContext, menuBar, new _MenuItemBuilder.Visitor() {
  
              private MenuDropdownBuilder currentMenu;
  
              @Override
              public void addTopLevel(final MenuItemDto menuDto) {
                  topLevelEntries.add(currentMenu = new MenuDropdownBuilder(menuDto.name(), new ArrayList<>()));
              }
  
              @Override
              public void addSectionSpacer() {
                  currentMenu.addSectionSpacer();
              }
  
              @Override
              public void addSectionLabel(final String named) {
                  currentMenu.addSectionSpacer(named);
              }
  
              @Override
              public void addMenuAction(final MenuItemDto menuDto) {
                  var action = menuDto.managedAction();
                  currentMenu.addAction(action);
              }
  
          });
  
          return new NavbarSection(menuBarSelect, Can.ofCollection(topLevelEntries)
                  .map(MenuDropdownBuilder::build));
      }
  
  }
  