package com.mh.user.aspect;

import javax.servlet.http.HttpServletRequest;

import com.alibaba.fastjson2.JSONObject;
import com.mh.user.annotation.SysLogger;
import com.mh.user.model.SysLog;
import com.mh.user.service.SysLogService;
import com.mh.user.utils.HttpUtils;
import com.mh.user.utils.IPUtils;
import com.mh.user.utils.SecurityUtils;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Lazy;
import org.springframework.stereotype.Component;

import java.lang.reflect.Method;
import java.util.Date;


/**
 * 系统日志，切面处理类，记录日志
 */
@Aspect
@Component
@Lazy(value = false)
public class SysLogAspect {

	@Autowired
	private SysLogService sysLogService;

//	@Pointcut("execution(* com.mh.*.service.*.*(..))")
    @Pointcut("@annotation(com.mh.user.annotation.SysLogger)")
	public void logPointCut() {

	}

	@Around("logPointCut()")
	public Object around(ProceedingJoinPoint point) throws Throwable {
		long beginTime = System.currentTimeMillis();
		// 执行方法
		Object result = point.proceed();
		// 执行时长(毫秒)
		long time = System.currentTimeMillis() - beginTime;
		// 保存日志
		saveSysLog(point, time);
		return result;

	}

	private void saveSysLog(ProceedingJoinPoint joinPoint, long time) {
		SysLog sysLog = new SysLog();
		String methodName = joinPoint.getSignature().getName();
		Method method = currentMethod(joinPoint,methodName);
		SysLogger sysLogger = method.getAnnotation(SysLogger.class);
		String module = sysLogger.title(); //操作模块
        String optDesc=sysLogger.optDesc();//业务操作描述
		sysLog.setOptDesc(optDesc);
		sysLog.setOperation(module);
		String userName = SecurityUtils.getUsername(); //用户名称

		if(joinPoint.getTarget() instanceof SysLogService) {
			return ;
		}
		MethodSignature signature = (MethodSignature) joinPoint.getSignature();

		// 请求的方法名
		String className = joinPoint.getTarget().getClass().getName();
		String methodName1 = signature.getName();
		sysLog.setMethod(className + "." + methodName1 + "()");

		// 请求的参数
		Object[] args = joinPoint.getArgs();
		try{
			String params = JSONObject.toJSONString(args[0]);
			if(params.length() > 200) {
				params = params.substring(0, 200) + "...";
			}
			sysLog.setParams(params);
		} catch (Exception e){
		}
		// 获取request
		HttpServletRequest request = HttpUtils.getHttpServletRequest();
		// 设置IP地址
		sysLog.setIp(IPUtils.getIpAddr(request));
		String ip=IPUtils.getRemoteIp();
		// 用户名
		sysLog.setUserName(userName);
		Date date1 = SecurityUtils.getLoginTime();
		// 登录时间
		sysLog.setCreateTime(date1);
		Date date=new Date();
		// 最后操作时间
		sysLog.setLastUpdateTime(date);
		// 执行时长(毫秒)
		sysLog.setTime(time);
		// 保存系统日志
		sysLogService.save(sysLog);
	}

	/**
	 * 获取当前执行的方法
	 *
	 * @param joinPoint  连接点
	 * @param methodName 方法名称
	 * @return 方法
	 */
	private Method currentMethod(JoinPoint joinPoint, String methodName) {
		/**
		 * 获取目标类的所有方法，找到当前要执行的方法
		 */
		Method[] methods = joinPoint.getTarget().getClass().getMethods();
		Method resultMethod = null;
		for (Method method : methods) {
			if (method.getName().equals(methodName)) {
				resultMethod = method;
				break;
			}
		}
		return resultMethod;
	}

}