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.commons.semantics;
  
  import java.beans.Introspector;
  import java.util.Map;
  import java.util.function.Predicate;
  
  import org.jspecify.annotations.Nullable;
  
  import org.apache.causeway.commons.internal.base._Strings;
  import org.apache.causeway.commons.internal.reflection._GenericResolver.ResolvedMethod;
  
  import lombok.Getter;
  import lombok.RequiredArgsConstructor;
  
  @Getter
  @RequiredArgsConstructor
  public enum AccessorSemantics {
      GET("get"),
      IS("is"),
      SET("set");
      private final String prefix;
  
      public static String associationIdentifierFor(final ResolvedMethod method) {
          return AccessorSemantics.isRecordComponentAccessor(method)
                  ? method.name()
                  : Introspector.decapitalize(_Strings.baseName(method.name()));
      }
  
      public String prefix(final @Nullable String input) {
          return input!=null
                  ? prefix + input
                  : prefix;
      }
  
      public boolean isPrefixOf(final @Nullable String input) {
          return input!=null
                  ? input.startsWith(prefix)
                  : false;
      }
  
      // -- HIGH LEVEL PREDICATES
  
      public static boolean isPropertyAccessor(final ResolvedMethod method) {
          return isRecordComponentAccessor(method)
                  || isGetter(method)
              ? !hasCollectionSemantics(method.returnType())
              : false;
      }
  
      public static boolean isCollectionAccessor(final ResolvedMethod method) {
          return isRecordComponentAccessor(method)
                  || isNonBooleanGetter(method)
              ? hasCollectionSemantics(method.returnType())
              : false;
      }
  
      // -- LOW LEVEL PREDICATES
  
      public static boolean isRecordComponentAccessor(final ResolvedMethod method) {
          var recordClass = method.implementationClass();
          if(!recordClass.isRecord()) return false;
          for(var recordComponent : recordClass.getRecordComponents()) {
              if(method.name().equals(recordComponent.getName())) return true;
          }
          return false;
      }
  
      public static boolean isCandidateGetterName(final @Nullable String name) {
          return GET.isPrefixOf(name)
                  || IS.isPrefixOf(name);
      }
  
      public static boolean isBooleanGetter(final ResolvedMethod method) {
          return IS.isPrefixOf(method.name())
                  && method.isNoArg()
                  && !method.isStatic()
                  && (method.returnType() == boolean.class
                  || method.returnType() == Boolean.class);
      }
  
      public static boolean isGetter(final ResolvedMethod method) {
          return isBooleanGetter(method)
                  || isNonBooleanGetter(method);
      }
  
      public static boolean isNonBooleanGetter(final ResolvedMethod method) {
          return isNonBooleanGetter(method, type->type != void.class);
      }
  
  //  public static boolean hasIterableMethodReturnType(final ResolvedMethod method) {
  //      return isNonBooleanGetter(method, Iterable.class)
  //          && hasCollectionSemantics(method.returnType());
  //  }
  //
  //  private static boolean isNonBooleanGetter(final ResolvedMethod method, final Class<?> expectedType) {
  //      return isNonBooleanGetter(method, type->
  //          expectedType.isAssignableFrom(ClassUtils.resolvePrimitiveIfNecessary(type)));
  //  }
  
      private static boolean isNonBooleanGetter(final ResolvedMethod method, final Predicate<Class<?>> typeFilter) {
          return GET.isPrefixOf(method.name())
                  && method.isNoArg()
                  && !method.isStatic()
                  && typeFilter.test(method.returnType());
      }
  
      // -- HELPER
  
      /** includes {@link Map} which are not directly iterable */
      private static boolean hasCollectionSemantics(final Class<?> cls) {
          return CollectionSemantics.valueOf(cls).isPresent();
      }
  }
  