/*
    * 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.myfaces.cdi;
  
  import javax.enterprise.event.Observes;
  import javax.enterprise.inject.spi.AfterBeanDiscovery;
  import javax.enterprise.inject.spi.AfterTypeDiscovery;
  import javax.enterprise.inject.spi.AnnotatedType;
  import javax.enterprise.inject.spi.BeanManager;
  import javax.enterprise.inject.spi.Extension;
  import javax.enterprise.inject.spi.ProcessAnnotatedType;
  import javax.faces.annotation.FacesConfig;
  
  public class JsfArtifactProducerExtension implements Extension
  {
      private boolean registerCdiProducers = false;
      
      <T> void processAnnotatedType(@Observes ProcessAnnotatedType<T> event, BeanManager beanManager)
      {
          FacesConfig facesConfig = event.getAnnotatedType().getAnnotation(FacesConfig.class);
          if (facesConfig != null && facesConfig.version() == FacesConfig.Version.JSF_2_3)
          {
              registerCdiProducers = true;
          }
      }
      
      void afterTypeDiscovery(@Observes AfterTypeDiscovery event, BeanManager beanManager)
      {        
          if (registerCdiProducers)
          {
              AnnotatedType<JsfArtifactProducer> jsfArtifactProducer =
                              beanManager.createAnnotatedType(JsfArtifactProducer.class);
              event.addAnnotatedType(jsfArtifactProducer, jsfArtifactProducer.getJavaClass().getName());
          }
      }
      
      void afterBeanDiscovery(@Observes AfterBeanDiscovery afterBeanDiscovery, BeanManager beanManager)
      {
          if (registerCdiProducers)
          {
              afterBeanDiscovery.addBean(new JsfArtifactFlowMapProducer(beanManager));
          }
      }
  
      public boolean isRegisterCdiProducers()
      {
          return registerCdiProducers;
      }
  }