package com.fdkankan.scene.aop;

import com.fdkankan.common.constant.ErrorCode;
import com.fdkankan.common.exception.BusinessException;
import com.fdkankan.scene.annotation.CheckCurrentUser;
import com.fdkankan.scene.entity.Camera;
import com.fdkankan.scene.entity.SceneCooperation;
import com.fdkankan.scene.entity.ScenePro;
import com.fdkankan.scene.service.ICameraService;
import com.fdkankan.scene.service.ISceneCooperationService;
import com.fdkankan.scene.service.ISceneProService;
import com.fdkankan.web.user.SSOLoginHelper;
import com.fdkankan.web.user.SSOUser;
import java.io.IOException;
import java.lang.reflect.Method;
import java.util.Objects;
import javax.servlet.http.HttpServletRequest;
import lombok.extern.log4j.Log4j2;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

/**
 * 记录注册用户操作记录、异常记录
 */
@Log4j2
@Aspect
@Component
@Order(2)
public class CheckCurrenUserAspect {

	@Autowired
	private ISceneProService sceneProService;
	@Autowired
	private ICameraService cameraService;
	@Autowired
	private SSOLoginHelper ssoLoginHelper;

	@Autowired
	private ISceneCooperationService sceneCooperationService;

	// Service层切点
	@Pointcut("@annotation(com.fdkankan.scene.annotation.CheckCurrentUser)")
	public void checkUserAspect() {
	}

	/**
	 * 前置通知 用于拦截Controller层记录用户的操作
	 *
	 * @param joinPoint
	 *            切点
	 * @throws IOException
	 */
	@Before("checkUserAspect()")
	public void doBefore(JoinPoint joinPoint) throws Exception {
		HttpServletRequest request = ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes())
				.getRequest();
		// 读取session中的用户
		SSOUser user = ssoLoginHelper.loginCheckV3(request.getHeader("token"));
		String sceneNum = request.getParameter("sceneNum");

		ScenePro entity = sceneProService.findBySceneNum(sceneNum);
		if(user == null){
			log.info(getCheckUserMthodDescription(joinPoint));
			log.info("不是当前用户的方法:"
					+ (joinPoint.getTarget().getClass().getName() + "." + joinPoint.getSignature().getName() + "()"));
			throw new BusinessException(ErrorCode.FAILURE_CODE_5014);
		}

		if("18750226207".equals(user.getUserName())){
			log.info("18750226207该账号默认超级管理员，可以操作所有场景");
			return;
		}

		if(user.getId() == null){
			Camera cameraEntity = cameraService.findByChildName(user.getUserName());
			if((cameraEntity != null && entity != null) && (cameraEntity.getId().longValue() != entity.getCameraId().longValue())){
				log.info(getCheckUserMthodDescription(joinPoint));
				log.info("不是当前用户的方法:"
						+ (joinPoint.getTarget().getClass().getName() + "." + joinPoint.getSignature().getName() + "()"));
				throw new BusinessException(ErrorCode.FAILURE_CODE_5014);
			}
		}
		else if((user != null && entity != null) && entity.getUserId() != null && (user.getId().longValue() != entity.getUserId().longValue())){
			SceneCooperation sceneCooperation = sceneCooperationService.getByNumAndUserId(sceneNum, user.getId());
			if(Objects.nonNull(sceneCooperation)){
				log.info(getCheckUserMthodDescription(joinPoint));
				log.info("不是当前用户的方法:"
						+ (joinPoint.getTarget().getClass().getName() + "." + joinPoint.getSignature().getName() + "()"));
				throw new BusinessException(ErrorCode.FAILURE_CODE_5014);
			}
		}

	}

	/**
	 * 获取注解中对方法的描述信息
	 *
	 * @param joinPoint
	 *            切点
	 * @return 方法描述
	 * @throws Exception
	 */
	public static String getCheckUserMthodDescription(JoinPoint joinPoint) throws Exception {
		String targetName = joinPoint.getTarget().getClass().getName();
		String methodName = joinPoint.getSignature().getName();
		Object[] arguments = joinPoint.getArgs();
		Class targetClass = Class.forName(targetName);
		Method[] methods = targetClass.getMethods();
		String description = "";
		for (Method method : methods) {
			if (method.getName().equals(methodName)) {
				Class[] clazzs = method.getParameterTypes();
				if (clazzs.length == arguments.length) {
					description = method.getAnnotation(CheckCurrentUser.class).description();
					break;
				}
			}
		}
		return description;
	}
}