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.param.parameter;
  
  import jakarta.inject.Inject;
  import jakarta.validation.constraints.Pattern;
  
  import org.apache.causeway.applib.annotation.Parameter;
  import org.apache.causeway.core.metamodel.context.MetaModelContext;
  import org.apache.causeway.core.metamodel.facetapi.FeatureType;
  import org.apache.causeway.core.metamodel.facets.FacetFactoryAbstract;
  import org.apache.causeway.core.metamodel.facets.param.parameter.fileaccept.FileAcceptFacetForParameterAnnotation;
  import org.apache.causeway.core.metamodel.facets.param.parameter.mandatory.MandatoryFacetForParameterAnnotation;
  import org.apache.causeway.core.metamodel.facets.param.parameter.mandatory.MandatoryFacetInvertedByNullableAnnotationOnParameter;
  import org.apache.causeway.core.metamodel.facets.param.parameter.maxlen.MaxLengthFacetForParameterAnnotation;
  import org.apache.causeway.core.metamodel.facets.param.parameter.mustsatisfy.MustSatisfySpecificationFacetForParameterAnnotation;
  import org.apache.causeway.core.metamodel.facets.param.parameter.precpol.PrecedingParametersPolicyFacet;
  import org.apache.causeway.core.metamodel.facets.param.parameter.regex.RegExFacetForParameterAnnotation;
  import org.apache.causeway.core.metamodel.facets.param.parameter.regex.RegExFacetForPatternAnnotationOnParameter;
  
  public class ParameterAnnotationFacetFactory
  extends FacetFactoryAbstract {
  
      @Inject
      public ParameterAnnotationFacetFactory(final MetaModelContext mmc) {
          super(mmc, FeatureType.PARAMETERS_ONLY);
      }
  
      @Override
      public void processParams(final ProcessParameterContext processParameterContext) {
          processPrecedingParamsPolicy(processParameterContext);
          processParamsMaxLength(processParameterContext);
          processParamsMustSatisfy(processParameterContext);
          processParamsRegEx(processParameterContext);
          processParamsOptional(processParameterContext);
          processParamsFileAccept(processParameterContext);
      }
  
      // check for @Parameter(precedingParamsPolicy=...)
      void processPrecedingParamsPolicy(final ProcessParameterContext processParameterContext) {
  
          var holder = processParameterContext.getFacetHolder();
          var parameterIfAny = processParameterContext.synthesizeOnParameter(Parameter.class);
  
          addFacetIfPresent(
                  PrecedingParametersPolicyFacet
                          .create(parameterIfAny, getConfiguration(), holder));
      }
  
      void processParamsMaxLength(final ProcessParameterContext processParameterContext) {
  
          var holder = processParameterContext.getFacetHolder();
          var parameterIfAny = processParameterContext.synthesizeOnParameter(Parameter.class);
  
          addFacetIfPresent(
                  MaxLengthFacetForParameterAnnotation
                  .create(parameterIfAny, holder));
      }
  
      void processParamsMustSatisfy(final ProcessParameterContext processParameterContext) {
  
          var holder = processParameterContext.getFacetHolder();
          var parameterIfAny = processParameterContext.synthesizeOnParameter(Parameter.class);
  
          addFacetIfPresent(
                  MustSatisfySpecificationFacetForParameterAnnotation
                  .create(parameterIfAny, holder, getFactoryService()));
      }
  
      void processParamsRegEx(final ProcessParameterContext processParameterContext) {
  
          var holder = processParameterContext.getFacetHolder();
          var parameterIfAny = processParameterContext.synthesizeOnParameter(Parameter.class);
  
          var parameterType = processParameterContext.getParameterType();
  
          var patternIfAny = processParameterContext.synthesizeOnParameter(Pattern.class);
          addFacetIfPresent(
                  RegExFacetForPatternAnnotationOnParameter
                  .create(patternIfAny, parameterType, holder));
  
          addFacetIfPresent(
                  RegExFacetForParameterAnnotation
                  .create(parameterIfAny, parameterType, holder));
      }
  
      void processParamsOptional(final ProcessParameterContext processParameterContext) {
  
          var holder = processParameterContext.getFacetHolder();
          var parameterIfAny = processParameterContext.synthesizeOnParameter(Parameter.class);
  
          var hasNullable = processParameterContext.streamParameterAnnotations()
              .anyMatch(annot->annot.annotationType().getSimpleName().equals("Nullable"));
  
          var parameterType = processParameterContext.getParameterType();
  
          addFacetIfPresent(
                  MandatoryFacetInvertedByNullableAnnotationOnParameter
                  .create(hasNullable, parameterType, holder));
  
          addFacetIfPresent(
                  MandatoryFacetForParameterAnnotation
                  .create(parameterIfAny, parameterType, holder));
      }
  
      void processParamsFileAccept(final ProcessParameterContext processParameterContext) {
  
          var holder = processParameterContext.getFacetHolder();
          var parameterIfAny = processParameterContext.synthesizeOnParameter(Parameter.class);
  
          addFacetIfPresent(
                  FileAcceptFacetForParameterAnnotation
                  .create(parameterIfAny, holder));
      }
  
  }
  