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.domain.rich.query;
  
  import java.util.Collections;
  
  import graphql.schema.DataFetchingEnvironment;
  
  import static graphql.schema.GraphQLFieldDefinition.newFieldDefinition;
  
  import org.apache.causeway.applib.annotation.Where;
  import org.apache.causeway.core.metamodel.interactions.managed.ManagedAction;
  import org.apache.causeway.core.metamodel.interactions.managed.ParameterNegotiationModel;
  import org.apache.causeway.core.metamodel.object.ManagedObject;
  import org.apache.causeway.core.metamodel.spec.feature.ObjectFeature;
  import org.apache.causeway.viewer.graphql.model.context.Context;
  import org.apache.causeway.viewer.graphql.model.domain.Environment;
  import org.apache.causeway.viewer.graphql.model.domain.Element;
  import org.apache.causeway.viewer.graphql.model.domain.common.interactors.ActionParamInteractor;
  import org.apache.causeway.viewer.graphql.model.fetcher.BookmarkedPojo;
  import org.apache.causeway.viewer.graphql.model.types.TypeMapper;
  
  import lombok.extern.log4j.Log4j2;
  
  @Log4j2
  public class RichActionParamsParamDefault extends Element {
  
      private final ActionParamInteractor actionParamInteractor;
  
      public RichActionParamsParamDefault(
              final ActionParamInteractor actionParamInteractor,
              final Context context) {
          super(context);
          this.actionParamInteractor = actionParamInteractor;
          var objectActionParameter = actionParamInteractor.getObjectActionParameter();
          if (objectActionParameter.hasDefaults()) {
              var elementType = objectActionParameter.getElementType();
              var fieldBuilder = newFieldDefinition()
                      .name("default")
                      .type(context.typeMapper.outputTypeFor(elementType, actionParamInteractor.getSchemaType()));
              actionParamInteractor.addGqlArguments(actionParamInteractor.getObjectMember(), fieldBuilder, TypeMapper.InputContext.DEFAULT, actionParamInteractor.getParamNum());
              setField(fieldBuilder.build());
          } else {
              setField(null);
          }
      }
  
      @Override
      protected Object fetchData(final DataFetchingEnvironment dataFetchingEnvironment) {
          var sourcePojo = BookmarkedPojo.sourceFrom(dataFetchingEnvironment);
          var objectSpecification = context.specificationLoader.loadSpecification(sourcePojo.getClass());
          if (objectSpecification == null) {
              return Collections.emptyList();
          }
          var objectAction = actionParamInteractor.getObjectMember();
          var managedObject = ManagedObject.adaptSingular(objectSpecification, sourcePojo);
          final ObjectFeature objectFeature = actionParamInteractor.getObjectActionParameter();
          var objectActionParameter = objectAction.getParameterById(objectFeature.asciiId());
          var argumentManagedObjects = actionParamInteractor.argumentManagedObjectsFor(new Environment.For(dataFetchingEnvironment), objectAction, context.bookmarkService);
          var managedAction = ManagedAction.of(managedObject, objectAction, Where.ANYWHERE);
          var pendingArgs = ParameterNegotiationModel.of(managedAction, argumentManagedObjects);
          var defaultManagedObject = objectActionParameter.getDefault(pendingArgs);
          return defaultManagedObject.getPojo();
      }
  
  }
  