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.core.metamodel.facets.objectvalue.mustsatisfyspec;
  
  import java.util.Arrays;
  import java.util.Objects;
  import java.util.function.BiConsumer;
  import java.util.stream.Collectors;
  
  import org.jspecify.annotations.NonNull;
  
  import org.apache.causeway.applib.services.factory.FactoryService;
  import org.apache.causeway.applib.services.i18n.TranslationContext;
  import org.apache.causeway.applib.services.i18n.TranslationService;
  import org.apache.causeway.applib.spec.Specification;
  import org.apache.causeway.commons.collections.Can;
  import org.apache.causeway.core.metamodel.facetapi.Facet;
  import org.apache.causeway.core.metamodel.facetapi.FacetAbstract;
  import org.apache.causeway.core.metamodel.facetapi.FacetHolder;
  import org.apache.causeway.core.metamodel.interactions.ProposedHolder;
  import org.apache.causeway.core.metamodel.interactions.val.ValidityContext;
  import org.apache.causeway.core.metamodel.object.ManagedObject;
  
  import lombok.Getter;
  
  public abstract class MustSatisfySpecificationFacetAbstract
  extends FacetAbstract
  implements MustSatisfySpecificationFacet {
  
      private static final Class<? extends Facet> type() {
          return MustSatisfySpecificationFacet.class;
      }
  
      @Getter //for testing
      private final @NonNull Can<Specification> specifications;
  
      private final SpecificationEvaluator specificationEvaluator;
  
      public MustSatisfySpecificationFacetAbstract(
              final Can<Specification> specifications,
              final FacetHolder holder) {
          super(type(), holder);
  
          this.specifications = specifications;
  
          final TranslationService translationService = getTranslationService();
          final TranslationContext translationContext = holder.getTranslationContext();
  
          specificationEvaluator = new SpecificationEvaluator(translationService, translationContext);
      }
  
      @Override
      public String invalidates(final ValidityContext validityContext) {
          if (!(validityContext instanceof ProposedHolder)) return null;
  
          final ProposedHolder proposedHolder = (ProposedHolder) validityContext;
          final ManagedObject proposedAdapter = proposedHolder.proposed();
          if(proposedAdapter == null) return null;
  
          final Object proposedObject = proposedAdapter.getPojo();
          return specificationEvaluator.evaluation()
                  .evaluate(specifications, proposedObject)
                  .getReason();
      }
  
      /**
       * For benefit of subclasses.
       */
      protected static Can<Specification> toSpecifications(
              final FactoryService factoryService,
              final Class<? extends Specification>[] classes) {
          return Arrays.stream(classes)
                  .map(factoryService::getOrCreate)
                  .collect(Can.toCan());
      }
  
      @Override
      public void visitAttributes(final BiConsumer<String, Object> visitor) {
          super.visitAttributes(visitor);
          visitor.accept("specifications",
                  specifications.stream()
                  .map(Specification::getClass)
                  .map(Class::getName)
                  .collect(Collectors.joining(", ")));
      }
  
      @Override
      public boolean semanticEquals(final @NonNull Facet other) {
          return other instanceof MustSatisfySpecificationFacetAbstract
                  ? Objects.equals(
                          this
                              .specifications.map(Specification::getClass),
                          ((MustSatisfySpecificationFacetAbstract)other)
                              .specifications.map(Specification::getClass))
                  : false;
      }
  
  }
  