package de.ph87.homeautomation;

import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.scheduling.annotation.Async;
import org.springframework.scheduling.annotation.EnableAsync;
import org.springframework.stereotype.Service;

@Slf4j
@Service
@EnableAsync
@RequiredArgsConstructor
public class ServerService implements ApplicationContextAware {

  private static final int DELAY_SECONDS = 1;

  private ConfigurableApplicationContext applicationContext;

  @Async
  public void shutdown() {
    try {
      for (int delay = DELAY_SECONDS; delay > 0; delay--) {
        log.info("Shutdown in {} second.", delay);
        Thread.sleep(1000);
      }
    } catch (InterruptedException e) {
      log.warn("Shutdown interrupted.");
      return;
    }
    applicationContext.close();
    System.exit(0);
  }

  @Override
  public void setApplicationContext(ApplicationContext ctx) throws BeansException {
    this.applicationContext = (ConfigurableApplicationContext) ctx;
  }

}