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.postprocessors.all.i18n;
  
  import java.util.Optional;
  import java.util.stream.Stream;
  
  import jakarta.inject.Inject;
  
  import org.apache.causeway.core.metamodel.context.MetaModelContext;
  import org.apache.causeway.core.metamodel.facetapi.Facet;
  import org.apache.causeway.core.metamodel.facets.all.described.MemberDescribedFacet;
  import org.apache.causeway.core.metamodel.facets.all.described.ObjectDescribedFacet;
  import org.apache.causeway.core.metamodel.facets.all.described.ParamDescribedFacet;
  import org.apache.causeway.core.metamodel.facets.all.i8n.HasMemoizableTranslation;
  import org.apache.causeway.core.metamodel.facets.all.named.MemberNamedFacet;
  import org.apache.causeway.core.metamodel.facets.all.named.ObjectNamedFacet;
  import org.apache.causeway.core.metamodel.facets.all.named.ParamNamedFacet;
  import org.apache.causeway.core.metamodel.postprocessors.MetaModelPostProcessorAbstract;
  import org.apache.causeway.core.metamodel.spec.ObjectSpecification;
  import org.apache.causeway.core.metamodel.spec.feature.ObjectAction;
  import org.apache.causeway.core.metamodel.spec.feature.ObjectActionParameter;
  import org.apache.causeway.core.metamodel.spec.feature.OneToManyAssociation;
  import org.apache.causeway.core.metamodel.spec.feature.OneToOneAssociation;
  
  public class TranslationPostProcessor
  extends MetaModelPostProcessorAbstract {
  
      @Inject
      public TranslationPostProcessor(final MetaModelContext metaModelContext) {
          super(metaModelContext);
      }
  
      @Override
      public boolean isEnabled() {
          // force PoWriter to be called to capture text that needs translating
          return super.getMetaModelContext().getTranslationService().getMode().isWrite();
      }
  
      @Override
      public void postProcessObject(final ObjectSpecification objectSpec) {
          memoizeTranslations(
                  Stream.of(
                          objectSpec.lookupFacet(ObjectNamedFacet.class),
                          objectSpec.lookupFacet(ObjectDescribedFacet.class)));
      }
  
      @Override
      public void postProcessAction(final ObjectSpecification objectSpec, final ObjectAction act) {
          memoizeTranslations(
                  Stream.of(
                          act.lookupFacet(MemberNamedFacet.class),
                          act.lookupFacet(MemberDescribedFacet.class)));
      }
  
      @Override
      public void postProcessParameter(
              final ObjectSpecification objectSpecification,
              final ObjectAction objectAction,
              final ObjectActionParameter param) {
          memoizeTranslations(
                  Stream.of(
                          param.lookupFacet(ParamNamedFacet.class),
                          param.lookupFacet(ParamDescribedFacet.class)));
      }
  
      @Override
      public void postProcessProperty(final ObjectSpecification objectSpec, final OneToOneAssociation prop) {
          memoizeTranslations(
                  Stream.of(
                          prop.lookupFacet(MemberNamedFacet.class),
                          prop.lookupFacet(MemberDescribedFacet.class)));
      }
  
      @Override
      public void postProcessCollection(final ObjectSpecification objectSpec, final OneToManyAssociation coll) {
          memoizeTranslations(
                  Stream.of(
                          coll.lookupFacet(MemberNamedFacet.class),
                          coll.lookupFacet(MemberDescribedFacet.class)));
      }
  
      // -- HELPER
  
      private void memoizeTranslations(final Stream<Optional<? extends Facet>> facetStream) {
          facetStream
          .filter(Optional::isPresent)
          .map(Optional::get)
          .filter(facet->facet instanceof HasMemoizableTranslation)
          .map(HasMemoizableTranslation.class::cast)
          .forEach(HasMemoizableTranslation::memoizeTranslations);
      }
  
  }
  