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/**
 * Copyright (C) 2015 The Gravitee team (http://gravitee.io)
 *
 * 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 io.gravitee.node.container;

import io.gravitee.node.api.Node;
import io.gravitee.node.api.NodeDeployer;
import java.util.List;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.config.AbstractFactoryBean;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;

/**
 * @author David BRASSELY (david.brassely at graviteesource.com)
 * @author GraviteeSource Team
 */
public class NodeFactory
  extends AbstractFactoryBean
  implements ApplicationContextAware {

  @Autowired
  private NodeDeployerFactoriesLoader nodeDeployerFactoriesLoader;

  private ApplicationContext applicationContext;

  private final Class nodeClass;

  public NodeFactory(Class nodeClass) {
    this.nodeClass = nodeClass;
  }

  @Override
  public Class getObjectType() {
    return Node.class;
  }

  @Override
  protected Node createInstance() throws Exception {
    Node node = nodeClass.newInstance();
    autowire(node);

    List deployers = nodeDeployerFactoriesLoader.getNodeDeployers();

    for (NodeDeployer deployer : deployers) {
      node = deployer.deploy(node);
      autowire(node);
    }

    return node;
  }

  private void autowire(Node node) throws Exception {
    if (node != null) {
      this.applicationContext.getAutowireCapableBeanFactory()
        .autowireBean(node);
      if (node instanceof ApplicationContextAware) {
        ((ApplicationContextAware) node).setApplicationContext(
            this.applicationContext
          );
      }

      if (node instanceof InitializingBean) {
        ((InitializingBean) node).afterPropertiesSet();
      }
    }
  }

  @Override
  public void setApplicationContext(ApplicationContext applicationContext) {
    this.applicationContext = applicationContext;
  }
}