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.wicket.ui.exec;
  
  import org.apache.wicket.core.request.handler.BookmarkablePageRequestHandler;
  import org.apache.wicket.core.request.handler.PageProvider;
  import org.apache.wicket.request.component.IRequestablePage;
  import org.apache.wicket.request.cycle.RequestCycle;
  import org.apache.wicket.request.mapper.parameter.PageParameters;
  import org.jspecify.annotations.NonNull;
  import org.jspecify.annotations.Nullable;
  
  import org.apache.causeway.applib.services.bookmark.Bookmark;
  import org.apache.causeway.viewer.wicket.model.util.PageParameterUtils;
  
  record PageRedirectRequest<T extends IRequestablePage>(
      @NonNull Class<T> pageClass,
      @Nullable PageParameters pageParameters,
      @Nullable IRequestablePage pageInstance) {
  
      static <T extends IRequestablePage> PageRedirectRequest<T> forPageClass(
              final @NonNull Class<T> pageClass,
              final @NonNull PageParameters pageParameters) {
          return new PageRedirectRequest<>(pageClass, pageParameters, null);
      }
  
      static <T extends IRequestablePage> PageRedirectRequest<T> forPageClassAndBookmark(
              final @NonNull Class<T> pageClass,
              final @NonNull Bookmark bookmark) {
          return forPageClass(
                          pageClass,
                          PageParameterUtils.createPageParametersForBookmark(bookmark));
      }
  
      static <T extends IRequestablePage> PageRedirectRequest<T> forPageClass(
              final @NonNull Class<T> pageClass) {
          return new PageRedirectRequest<>(pageClass, null, null);
      }
  
      static <T extends IRequestablePage> PageRedirectRequest<T> forPage(
              final @NonNull Class<T> pageClass,
              final @NonNull T pageInstance) {
          return new PageRedirectRequest<>(pageClass, null, pageInstance);
      }
  
      String toUrl() {
          var handler = new BookmarkablePageRequestHandler(
                  new PageProvider(pageClass, pageParameters));
          return RequestCycle.get().urlFor(handler)
              .toString();
      }
  
      void apply() {
          var requestCycle = RequestCycle.get();
          if(requestCycle==null) return;
          if(pageParameters!=null) {
              requestCycle.setResponsePage(pageClass, pageParameters);
              return;
          }
          if(pageInstance!=null) {
              requestCycle.setResponsePage(pageInstance);
              return;
          }
          requestCycle.setResponsePage(pageClass);
      }
  
  }
  