/**
    * This file Copyright (c) 2019 Magnolia International
    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
    *
    *
    * This file is dual-licensed under both the Magnolia
    * Network Agreement and the GNU General Public License.
    * You may elect to use one or the other of these licenses.
    *
   * This file is distributed in the hope that it will be
   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
   * implied warranty of MERCHANTABILITY or FITNESS FOR A
   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
   * Redistribution, except as permitted by whichever of the GPL
   * or MNA you select, is prohibited.
   *
   * 1. For the GPL license (GPL), you can redistribute and/or
   * modify this file under the terms of the GNU General
   * Public License, Version 3, as published by the Free Software
   * Foundation.  You should have received a copy of the GNU
   * General Public License, Version 3 along with this program;
   * if not, write to the Free Software Foundation, Inc., 51
   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * 2. For the Magnolia Network Agreement (MNA), this file
   * and the accompanying materials are made available under the
   * terms of the MNA which accompanies this distribution, and
   * is available at http://www.magnolia-cms.com/mna.html
   *
   * Any modifications to this file must keep this entire header
   * intact.
   *
   */
  package info.magnolia.i18nsystem.bytebudddy;
  
  import java.lang.annotation.Annotation;
  import java.util.Objects;
  import java.util.stream.Stream;
  
  import lombok.EqualsAndHashCode;
  import net.bytebuddy.description.method.MethodDescription;
  import net.bytebuddy.description.type.TypeDescription;
  import net.bytebuddy.matcher.ElementMatcher;
  import net.bytebuddy.matcher.ElementMatchers;
  
  /**
   * Evaluates a delegate matcher against methods of a specified type and all their super-methods in parent classes.
   *
   * @param <T> method description
   */
  @EqualsAndHashCode(callSuper = false)
  public class MethodOrSuperMethodMatcher<T extends MethodDescription> extends ElementMatcher.Junction.AbstractBase<T> {
  
      /**
       * Convenience API which looks for method annotations in type hierarchy.
       */
      public static MethodOrSuperMethodMatcher<MethodDescription> annotationIsPresentInHierarchy(Class<? extends Annotation> annotationType) {
          return new MethodOrSuperMethodMatcher<>(ElementMatchers.isAnnotatedWith(annotationType));
      }
  
      private final ElementMatcher<? super MethodDescription> matcher;
  
      public MethodOrSuperMethodMatcher(ElementMatcher<? super MethodDescription> matcher) {
          this.matcher = matcher;
      }
  
      @Override
      public boolean matches(T target) {
          return matcher.matches(target) || doMatch(target, target.getDeclaringType().asGenericType());
      }
  
      public boolean doMatch(T target, TypeDescription.Generic declaringType) {
          boolean matches = getImplementedTypes(declaringType)
                  .flatMap(type -> getTargetMethod(type, target))
                  .anyMatch(matcher::matches);
  
          if (!matches && declaringType.getSuperClass() != null) {
              matches = this.doMatch(target, declaringType.getSuperClass());
          }
  
          return matches;
      }
  
      private Stream<TypeDescription.Generic> getImplementedTypes(TypeDescription.Generic declaringType) {
          return Stream.concat(
                  Stream.of(declaringType),
                  declaringType.getInterfaces().stream()
                          .flatMap(this::getImplementedTypes)
          );
      }
  
      private Stream<MethodDescription.InGenericShape> getTargetMethod(TypeDescription.Generic type, T targetMethod) {
          return type.getDeclaredMethods().stream()
                  .filter(method ->
                          Objects.equals(targetMethod.getName(), method.getName()) &&
                                  Objects.equals(targetMethod.getReturnType(), method.getReturnType()) &&
                                  Objects.equals(targetMethod.getParameters(), method.getParameters()))
                  .findFirst()
                  .map(Stream::of)
                 .orElse(Stream.empty());
     }
 }