/*
    * 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.tobago.example.demo;
  
  import org.apache.myfaces.tobago.util.FacesVersion;
  
  import javax.enterprise.context.ApplicationScoped;
  import javax.inject.Named;
  
  @Named
  @ApplicationScoped
  public class Version {
  
    private static final boolean CDI10 = hasClass("javax.enterprise.context.Conversation");
    private static final boolean CDI1112 = hasClass("javax.enterprise.context.Destroyed");
    private static final boolean CDI20 = hasClass("javax.enterprise.context.BeforeDestroyed");
  
    private static boolean hasClass(String clazz) {
      try {
        Class.forName(clazz);
        return true;
      } catch (ClassNotFoundException e) {
        return false;
      }
    }
  
    public boolean isVersion20() {
      return FacesVersion.supports20() && !FacesVersion.supports21();
    }
  
    public boolean isVersion21() {
      return FacesVersion.supports21() && !FacesVersion.supports22();
    }
  
    public boolean isVersion22() {
      return FacesVersion.supports22() && !FacesVersion.supports23();
    }
  
    public boolean isVersion23() {
      return FacesVersion.supports23();
    }
  
    public boolean isMojarra() {
      return FacesVersion.isMojarra();
    }
  
    public boolean isMyfaces() {
      return FacesVersion.isMyfaces();
    }
  
    public boolean isCdiVersion10() {
      return CDI10 && !CDI1112;
    }
  
    public boolean isCdiVersion1112() {
      return CDI1112 && !CDI20;
    }
  
    public boolean isCdiVersion20() {
      return CDI20;
    }
  }