/*
 * Copyright 2005-2013 the original author or authors.
 * 
 * Licensed 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.wamblee.photos.model.plumbing;

import java.util.ArrayList;
import java.util.List;

import javax.enterprise.context.ApplicationScoped;
import javax.enterprise.context.spi.Context;
import javax.enterprise.context.spi.CreationalContext;
import javax.enterprise.event.Observes;
import javax.enterprise.inject.spi.AfterDeploymentValidation;
import javax.enterprise.inject.spi.Bean;
import javax.enterprise.inject.spi.BeanManager;
import javax.enterprise.inject.spi.Extension;
import javax.enterprise.inject.spi.ProcessBean;

public class EagerExtension implements Extension {

    private List<Bean<?>> eagerBeansList = new ArrayList<Bean<?>>();

    public <T> void collect(@Observes ProcessBean<T> event) {
        if (event.getAnnotated().isAnnotationPresent(Eager.class) &&
            event.getAnnotated().isAnnotationPresent(ApplicationScoped.class)) {
            eagerBeansList.add(event.getBean());
        }
    }

    public void load(@Observes AfterDeploymentValidation event,
        BeanManager beanManager) {
        for (Bean<?> bean : eagerBeansList) {
            // note: toString() is important to instantiate the bean
            /*
            Class main = Object.class;
            for (Type type : bean.getTypes()) {
                if (type instanceof Class) {
                    Class clazz = (Class) type;
                    if (main.isAssignableFrom(clazz)) {
                        main = clazz;
                    }
                }
            }*/
            /*
            bean.create((CreationalContext) beanManager
                .createCreationalContext(bean));*/
            /* beanManager.getReference(bean, main,
                 beanManager.createCreationalContext(null)).toString();
             beanManager.getReference(bean, main,
                 beanManager.createCreationalContext(null)).toString(); */
            /*
                        beanManager.getReference(bean, bean.getBeanClass(),
                            beanManager.createCreationalContext(bean)).toString();
                            */

            Context context = beanManager.getContext(ApplicationScoped.class);
            context.get(bean,
                (CreationalContext) beanManager.createCreationalContext(bean))
                .toString();
        }
    }
}