/*
 *  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
 *
 *    https://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.grails.spring.beans;

import org.springframework.beans.BeansException;

import grails.core.GrailsApplication;
import grails.core.support.GrailsApplicationAware;
import grails.core.support.GrailsConfigurationAware;

/**
 * Implementation of {@link org.springframework.beans.factory.config.BeanPostProcessor}
 * that recognizes {@link grails.core.support.GrailsApplicationAware}
 * and injects and instance of {@link GrailsApplication}.
 *
 * @author Steven Devijver
 * @since 0.2
 */
public class GrailsApplicationAwareBeanPostProcessor extends BeanPostProcessorAdapter {

    private GrailsApplication grailsApplication;

    public GrailsApplicationAwareBeanPostProcessor(GrailsApplication grailsApplication) {
        this.grailsApplication = grailsApplication;
    }

    @Override
    public Object postProcessBeforeInitialization(Object bean, String beanName) throws BeansException {
        processAwareInterfaces(grailsApplication, bean);
        return bean;
    }

    public static void processAwareInterfaces(GrailsApplication grailsApplication, Object bean) {
        if (bean instanceof GrailsApplicationAware) {
            ((GrailsApplicationAware) bean).setGrailsApplication(grailsApplication);
        }
        if (bean instanceof GrailsConfigurationAware) {
            ((GrailsConfigurationAware) bean).setConfiguration(grailsApplication.getConfig());
        }
    }
}
