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 graphql.schema.DataFetchingEnvironment;
  import graphql.schema.GraphQLList;
  import graphql.schema.GraphQLOutputType;
  import graphql.schema.GraphQLType;
  
  import static graphql.schema.GraphQLFieldDefinition.newFieldDefinition;
  
  import org.jspecify.annotations.Nullable;
  
  import org.apache.causeway.applib.annotation.Where;
  import org.apache.causeway.core.metamodel.consent.InteractionInitiatedBy;
  import org.apache.causeway.core.metamodel.facets.actcoll.typeof.TypeOfFacet;
  import org.apache.causeway.core.metamodel.object.ManagedObject;
  import org.apache.causeway.core.metamodel.spec.feature.ObjectAction;
  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.ActionInteractor;
  import org.apache.causeway.viewer.graphql.model.exceptions.DisabledException;
  import org.apache.causeway.viewer.graphql.model.exceptions.HiddenException;
  import org.apache.causeway.viewer.graphql.model.fetcher.BookmarkedPojo;
  
  import lombok.extern.log4j.Log4j2;
  
  @Log4j2
  public class RichActionInvokeResult extends Element {
  
      private final ActionInteractor actionInteractor;
  
      public RichActionInvokeResult(
              final ActionInteractor actionInteractor,
              final Context context) {
          super(context);
  
          this.actionInteractor = actionInteractor;
  
          var objectAction = actionInteractor.getObjectMember();
  
          var graphQLOutputType = typeFor(objectAction);
          if (graphQLOutputType != null) {
              var fieldBuilder = newFieldDefinition()
                      .name("results")
                      .type(graphQLOutputType);
              setField(fieldBuilder.build());
          } else {
              setField(null);
          }
      }
  
      @Nullable
      private GraphQLOutputType typeFor(final ObjectAction objectAction){
          var objectSpecification = objectAction.getReturnType();
          switch (objectSpecification.getBeanSort()){
  
              case COLLECTION:
  
                  TypeOfFacet facet = objectAction.getFacet(TypeOfFacet.class);
                  if (facet == null) {
                      log.warn("Unable to locate TypeOfFacet for {}", objectAction.getFeatureIdentifier().getFullIdentityString());
                      return null;
                  }
                  var objectSpecificationOfCollectionElement = facet.elementSpec();
                  GraphQLType wrappedType = context.typeMapper.outputTypeFor(objectSpecificationOfCollectionElement, actionInteractor.getSchemaType());
                  if (wrappedType == null) {
                      log.warn("Unable to create wrapped type of for {} for action {}",
                              objectSpecificationOfCollectionElement.getFullIdentifier(),
                              objectAction.getFeatureIdentifier().getFullIdentityString());
                      return null;
                  }
                  return GraphQLList.list(wrappedType);
  
              case VALUE:
              case ENTITY:
              case VIEW_MODEL:
              default:
                  return context.typeMapper.outputTypeFor(objectSpecification, actionInteractor.getSchemaType());
  
          }
      }
  
      @Override
      protected Object fetchData(final DataFetchingEnvironment dataFetchingEnvironment) {
  
          var sourcePojo = BookmarkedPojo.sourceFrom(dataFetchingEnvironment);
  
          var environment = new Environment.ForTunnelled(dataFetchingEnvironment);
  
          var objectSpecification = context.specificationLoader.loadSpecification(sourcePojo.getClass());
          if (objectSpecification == null) {
              return null;
          }
  
          var objectAction = actionInteractor.getObjectMember();
          var managedObject = ManagedObject.adaptSingular(objectSpecification, sourcePojo);
  
          var visibleConsent = objectAction.isVisible(managedObject, InteractionInitiatedBy.USER, Where.ANYWHERE);
          if (visibleConsent.isVetoed()) {
              throw new HiddenException(objectAction.getFeatureIdentifier());
          }
  
          var usableConsent = objectAction.isUsable(managedObject, InteractionInitiatedBy.USER, Where.ANYWHERE);
          if (usableConsent.isVetoed()) {
              throw new DisabledException(objectAction.getFeatureIdentifier());
          }
  
          var head = objectAction.interactionHead(managedObject);
          var argumentManagedObjects = actionInteractor.argumentManagedObjectsFor(environment, objectAction, context.bookmarkService);
  
          var validityConsent = objectAction.isArgumentSetValid(head, argumentManagedObjects, InteractionInitiatedBy.USER);
          if (validityConsent.isVetoed()) {
              throw new IllegalArgumentException(validityConsent.getReasonAsString().orElse("Invalid"));
          }
  
          var resultManagedObject = objectAction.execute(head, argumentManagedObjects, InteractionInitiatedBy.USER);
          return resultManagedObject.getPojo();
      }
  
  }
  