package com.gkhy.assess.framework.aop;

import cn.hutool.core.util.URLUtil;
import cn.hutool.extra.servlet.ServletUtil;
import cn.hutool.json.JSONObject;
import com.gkhy.assess.common.utils.StringUtils;
import com.gkhy.assess.system.utils.ShiroUtils;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.AfterThrowing;
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.stereotype.Component;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;
import java.lang.reflect.Method;
import java.lang.reflect.Parameter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Aspect
@Component
@Slf4j
public class LogAspect {
    @Pointcut("execution(public * com.gkhy.assess.*.controller..*.*(..))")
    public void logPointCut(){

    }

    /**
     * 处理完请求后执行
     *
     * @param joinPoint 切点
     */
    @Around("logPointCut()")
    public Object doAround(ProceedingJoinPoint joinPoint) throws Throwable{
        long startTime = System.currentTimeMillis();
        //获取当前请求对象
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = attributes.getRequest();
        Signature signature = joinPoint.getSignature();
        MethodSignature methodSignature = (MethodSignature) signature;
        Method method = methodSignature.getMethod();
        StringBuffer requestURL = request.getRequestURL();
        JSONObject webLog = new JSONObject();
        String urlStr = request.getRequestURL().toString();
        webLog.put("basePath", StringUtils.removeSuffix(urlStr, URLUtil.url(urlStr).getPath()));
        webLog.put("ip", ServletUtil.getClientIP(request,null));
        webLog.put("method",request.getMethod());
        Object params=getParameter(method, joinPoint.getArgs());
        webLog.put("parameter",params);
        webLog.put("uri",request.getRequestURI());
        webLog.put("url",requestURL.toString());
        String userId=ShiroUtils.getUserId()!=null?String.valueOf(ShiroUtils.getUserId()):"";
        webLog.put("userId",userId);
        log.info(webLog.toString());
        Object result = joinPoint.proceed();
        if (result == null) {
            //如果切到了 没有返回类型的void方法，这里直接返回
            return null;
        }
        long endTime = System.currentTimeMillis();
        webLog.put("result",result);
        webLog.put("spendTime",endTime - startTime);
        log.info(webLog.toString());
        return result;
    }

    /**
     * 拦截异常操作
     *
     * @param joinPoint 切点
     * @param e 异常
     */
    @AfterThrowing(value = "logPointCut()", throwing = "e")
    public void doAfterThrowing(JoinPoint joinPoint, Exception e)
    {
        //获取当前请求对象
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = attributes.getRequest();
        String urlStr = request.getRequestURL().toString();
        log.error("@AfterThrowing异常通知：url={},出错了error_message={}", urlStr,e.getMessage());
    }



    /**
     * 根据方法和传入的参数获取请求参数
     */
    private Object getParameter(Method method, Object[] args) {
        List<Object> argList = new ArrayList<>();
        Parameter[] parameters = method.getParameters();
        for (int i = 0; i < parameters.length; i++) {
            //将RequestBody注解修饰的参数作为请求参数
            RequestBody requestBody = parameters[i].getAnnotation(RequestBody.class);
            if (requestBody != null) {
                argList.add(args[i]);
            }
            //将RequestParam注解修饰的参数作为请求参数
            RequestParam requestParam = parameters[i].getAnnotation(RequestParam.class);
            if (requestParam != null) {
                Map<String, Object> map = new HashMap<>();
                String key = parameters[i].getName();
                if (StringUtils.isNotEmpty(requestParam.value())) {
                    key = requestParam.value();
                }
                map.put(key, args[i]);
                argList.add(map);
            }
        }
        if (argList.size() == 0) {
            return null;
        } else if (argList.size() == 1) {
            return argList.get(0);
        } else {
            return argList;
        }
    }

}