/*
    * 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.syncope.core.spring;
  
  import java.util.Optional;
  import org.springframework.beans.factory.support.DefaultListableBeanFactory;
  import org.springframework.context.ApplicationContext;
  import org.springframework.context.ApplicationContextAware;
  import org.springframework.context.ConfigurableApplicationContext;
  
  public class ApplicationContextProvider implements ApplicationContextAware {
  
      private static ConfigurableApplicationContext CTX;
  
      private static DefaultListableBeanFactory BEAN_FACTORY;
  
      public static ConfigurableApplicationContext getApplicationContext() {
          return CTX;
      }
  
      public static void setApplicationContext(final ConfigurableApplicationContext ctx) {
          CTX = ctx;
      }
  
      public static DefaultListableBeanFactory getBeanFactory() {
          return Optional.ofNullable(BEAN_FACTORY).
                  orElseGet(() -> Optional.ofNullable(CTX).
                  map(ctx -> (DefaultListableBeanFactory) ctx.getBeanFactory()).
                  orElse(null));
      }
  
      public static void setBeanFactory(final DefaultListableBeanFactory beanFactory) {
          BEAN_FACTORY = beanFactory;
      }
  
      /**
       * Wiring the ApplicationContext into a static method.
       *
       * @param ctx Spring application context
       */
      @Override
      public void setApplicationContext(final ApplicationContext ctx) {
          CTX = (ConfigurableApplicationContext) ctx;
      }
  }