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 java.util.List;
  import java.util.stream.Collectors;
  
  import graphql.schema.DataFetchingEnvironment;
  import graphql.schema.GraphQLList;
  
  import static graphql.schema.GraphQLFieldDefinition.newFieldDefinition;
  
  import org.apache.causeway.applib.annotation.Where;
  import org.apache.causeway.core.metamodel.consent.InteractionInitiatedBy;
  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 RichActionParamsParamChoices extends Element {
  
       private final ActionParamInteractor actionParamInteractor;
  
       public RichActionParamsParamChoices(
               final ActionParamInteractor actionParamInteractor,
               final Context context) {
           super(context);
           this.actionParamInteractor = actionParamInteractor;
  
           var objectActionParameter = actionParamInteractor.getObjectActionParameter();
           if (objectActionParameter.hasChoices()) {
               var elementType = objectActionParameter.getElementType();
               var fieldBuilder = newFieldDefinition()
                       .name("choices")
                       .type(GraphQLList.list(context.typeMapper.outputTypeFor(elementType, actionParamInteractor.getSchemaType())));
               actionParamInteractor.addGqlArguments(actionParamInteractor.getObjectMember(), fieldBuilder, TypeMapper.InputContext.CHOICES, actionParamInteractor.getParamNum());
               setField(fieldBuilder.build());
           } else {
               setField(null);
           }
       }
  
       @Override
       protected List<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 choices = objectActionParameter.getChoices(pendingArgs, InteractionInitiatedBy.USER);
  
           return choices.stream()
                      .map(ManagedObject::getPojo)
                      .collect(Collectors.toList());
       }
  
   }
  