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.graphql.model.fetcher;
  
  import org.apache.causeway.applib.services.bookmark.Bookmark;
  import org.apache.causeway.applib.services.bookmark.BookmarkService;
  import org.apache.causeway.viewer.graphql.model.context.Context;
  
  import graphql.schema.DataFetchingEnvironment;
  
  public class BookmarkedPojo {
  
      private final Bookmark bookmark;
      private final BookmarkService bookmarkService;
  
      public BookmarkedPojo(
              final Bookmark bookmark,
              final BookmarkService bookmarkService) {
  
          this.bookmark = bookmark;
          this.bookmarkService = bookmarkService;
      }
  
      public static Object sourceFrom(DataFetchingEnvironment dataFetchingEnvironment) {
          var source = dataFetchingEnvironment.getSource();
          return source instanceof BookmarkedPojo
                  ? ((BookmarkedPojo) source).getTargetPojo()
                  : source;
      }
  
      public static BookmarkedPojo sourceFrom(DataFetchingEnvironment dataFetchingEnvironment, Context context) {
          var sourcePojo = sourceFrom(dataFetchingEnvironment);
          return context.bookmarkService.bookmarkFor(sourcePojo)
                  .map(bookmark -> new BookmarkedPojo(bookmark, context.bookmarkService))
                  .orElseThrow();
      }
  
      public Object getTargetPojo() {
          return bookmarkService.lookup(bookmark).orElseThrow();
      }
  }
  