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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.spring;

import io.gravitee.kubernetes.client.spring.KubernetesClientConfiguration;
import io.gravitee.node.api.Node;
import io.gravitee.node.container.AbstractContainer;
import io.gravitee.node.container.spring.env.EnvironmentConfiguration;
import io.gravitee.node.container.spring.env.PropertiesConfiguration;
import io.gravitee.node.management.http.spring.ManagementConfiguration;
import io.gravitee.node.monitoring.spring.MonitoringConfiguration;
import io.gravitee.node.plugins.service.spring.ServiceConfiguration;
import io.gravitee.node.reporter.spring.ReporterConfiguration;
import io.gravitee.plugin.core.spring.PluginConfiguration;
import java.util.ArrayList;
import java.util.List;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;

/**
 * @author David BRASSELY (david.brassely at graviteesource.com)
 * @author GraviteeSource Team
 */
public abstract class SpringBasedContainer extends AbstractContainer {

  private ConfigurableApplicationContext ctx;

  public SpringBasedContainer() {
    super();
  }

  @Override
  protected void initialize() {
    super.initialize();

    this.initializeContext();
  }

  protected void initializeContext() {
    ctx = new AnnotationConfigApplicationContext();

    List> classes = annotatedClasses();
    classes.forEach(
      aClass -> ((AnnotationConfigApplicationContext) ctx).register(aClass)
    );

    // Finally refresh the context
    ctx.refresh();
  }

  protected List> annotatedClasses() {
    List> classes = new ArrayList<>();

    classes.add(EnvironmentConfiguration.class);
    classes.add(PropertiesConfiguration.class);

    classes.add(PluginConfiguration.class);
    classes.add(ServiceConfiguration.class);

    classes.add(ManagementConfiguration.class);
    classes.add(ReporterConfiguration.class);

    classes.add(MonitoringConfiguration.class);
    classes.add(KubernetesClientConfiguration.class);

    classes.add(NodeConfiguration.class);

    return classes;
  }

  @Override
  protected void doStop() throws Exception {
    if (!stopped) {
      LoggerFactory
        .getLogger(this.getClass())
        .info("Shutting-down {}...", name());

      try {
        node().stop();
      } catch (Exception ex) {
        LoggerFactory.getLogger(this.getClass()).error("Unexpected error", ex);
      } finally {
        ctx.close();
        stopped = true;
      }
    }
  }

  @Override
  public Node node() {
    // Get a reference to the node
    return ctx.getBean(Node.class);
  }

  public ApplicationContext applicationContext() {
    return ctx;
  }
}