package org.springblade.modules.interceptor;

import org.springblade.modules.equipment.service.IEquipmentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.annotation.PostConstruct;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * 设备管理拦截器，管理设备的在线状态
 * @author zhongrj
 * @time 2021-5-7
 */


@Component
public class EquipmentInterceptor implements HandlerInterceptor {

	@Autowired
	private IEquipmentService iEquipmentService;

	public static EquipmentInterceptor equipmentInterceptor;

	@PostConstruct
	public void init(){
		equipmentInterceptor = this;
	}

	/**
	 * 拦截所有的设备查询操作，在此之前做更新设备状态的操作
	 * @param request 请求域
	 * @param response 响应域
	 * @param handler 处理器
	 * @return
	 * @throws Exception 异常
	 */
	@Override
	public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
		//更新设备状态
		equipmentInterceptor.iEquipmentService.updateEquipmentDtype();
		//放行
		return true;
	}

	@Override
	public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {

	}

	@Override
	public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {

	}
}