/*
    * 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.shiro.guice.aop;
  
  import com.google.inject.AbstractModule;
  import com.google.inject.matcher.AbstractMatcher;
  import com.google.inject.matcher.Matchers;
  import org.apache.shiro.aop.AnnotationMethodInterceptor;
  import org.apache.shiro.aop.AnnotationResolver;
  import org.apache.shiro.aop.DefaultAnnotationResolver;
  import org.apache.shiro.authz.aop.*;
  
  import java.lang.annotation.Annotation;
  import java.lang.reflect.Method;
  
  /**
   * Install this module to enable Shiro AOP functionality in Guice.  You may extend it to add your own Shiro
   * interceptors, override the default ones, or provide a specific {@link org.apache.shiro.aop.AnnotationResolver}.
   */
  public class ShiroAopModule extends AbstractModule {
      @Override
      protected final void configure() {
          AnnotationResolver resolver = createAnnotationResolver();
          configureDefaultInterceptors(resolver);
          configureInterceptors(resolver);
      }
  
      protected final void bindShiroInterceptor(final AnnotationMethodInterceptor methodInterceptor) {
          bindInterceptor(Matchers.any(), new AbstractMatcher<Method>() {
              public boolean matches(Method method) {
                  Class<? extends Annotation> annotation = methodInterceptor.getHandler().getAnnotationClass();
                  return method.getAnnotation(annotation) != null
                          || method.getDeclaringClass().getAnnotation(annotation) != null;
              }
          }, new AopAllianceMethodInterceptorAdapter(methodInterceptor));
      }
  
      protected AnnotationResolver createAnnotationResolver() {
          return new DefaultAnnotationResolver();
      }
  
      protected void configureDefaultInterceptors(AnnotationResolver resolver) {
          bindShiroInterceptor(new RoleAnnotationMethodInterceptor(resolver));
          bindShiroInterceptor(new PermissionAnnotationMethodInterceptor(resolver));
          bindShiroInterceptor(new AuthenticatedAnnotationMethodInterceptor(resolver));
          bindShiroInterceptor(new UserAnnotationMethodInterceptor(resolver));
          bindShiroInterceptor(new GuestAnnotationMethodInterceptor(resolver));
      }
  
      protected void configureInterceptors(AnnotationResolver resolver) {
  
      }
  }