package com.nanjing.water.host.api;

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;
import javax.servlet.http.HttpServletRequest;

import com.nanjing.water.common.enums.ELogger;
import com.nanjing.water.common.util.*;
import com.nanjing.water.common.util.LocalDateTimeUtil;
import com.nanjing.water.common.util.LoggerUtil;
import com.nanjing.water.common.util.SerializeUtil;
import com.nanjing.water.common.util.StringUtil;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.Signature;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.slf4j.Logger;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

/**
 * 统一日志处理切面
 * Created by macro on 2018/4/26.
 */
@Aspect
@Component
@Order(1)
public class WebLogAspect {
    private static final Logger logger = LoggerUtil.get(ELogger.API_REQUEST);
    private static final Logger sysLogger = LoggerUtil.get(ELogger.SYS_ERROR);
    /**
     * 100毫秒
     */
    private static final long MS_100 = 100;
    /**
     * 2秒
     */
    private static final long SEC_1 = 1000;
    /**
     * 2秒
     */
    private static final long SEC_2 = 2 * 1000;
    /**
     * 10秒
     */
    private static final long SEC_10 = 10 * 1000;
    /**
     * 1分钟
     */
    private static final long MINS_1 = 60 * 1000;
    /**
     * 5分钟
     */
    private static final long MINS_5 = 5 * 60 * 1000;

    @Pointcut(
        "execution(public * com.lunhan.*.host.controller.*.*(..))" +
        "||execution(public * com.lunhan.*.host.admin.*.*(..))" +
        "||execution(public * com.lunhan.*.host.customer.*.*(..))"
    )
    public void webLog() {
    }

    @Before("webLog()")
    public void doBefore(JoinPoint joinPoint) {
    }

    @AfterReturning(value = "webLog()", returning = "ret")
    public void doAfterReturning(Object ret) {
    }


    @Around("webLog()")
    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();
        //记录请求信息(通过Logstash传入Elasticsearch)
        ApiRequestLogDTO webLog = HttpRequestLogPool.getRequestInfo();
        Object result = joinPoint.proceed();
        Signature signature = joinPoint.getSignature();
        MethodSignature methodSignature = (MethodSignature) signature;
        Method method = methodSignature.getMethod();
//        if (method.isAnnotationPresent(ApiOperation.class)) {
//            ApiOperation log = method.getAnnotation(ApiOperation.class);
//            webLog.setDescription(log.value());
//        }
        String desc;
        switch (webLog.getMethod()) {
            case "POST":
                desc = method.getAnnotation(PostMapping.class).name();
                break;
            case "GET":
                desc = method.getAnnotation(GetMapping.class).name();
                break;
            case "PUT":
                desc = method.getAnnotation(PutMapping.class).name();
                break;
            case "Delete":
                desc = method.getAnnotation(DeleteMapping.class).name();
                break;
            default:
                desc = "";
                break;
        }
        webLog.setDesc(desc);

        Long endTime = LocalDateTimeUtil.nowTimeStamp();
        webLog.setResponseTime(endTime);
        webLog.setRequestData(SerializeUtil.toJson(getParameter(method, joinPoint.getArgs())));
        webLog.setResponseData(SerializeUtil.toJson(result));
        webLog.setSpendTime((endTime - startTime));

        String usedTimesLevel;
        if (webLog.getSpendTime() > MINS_5) {//大于5分钟
            usedTimesLevel = "F";
        } else if (webLog.getSpendTime() > MINS_1) {//1 - 5分钟
            usedTimesLevel = "E";
        } else if (webLog.getSpendTime() > SEC_10) {//10秒 - 1分钟
            usedTimesLevel = "D";
        } else if (webLog.getSpendTime() > SEC_2) {//2秒 - 10秒
            usedTimesLevel = "C";
        } else if (webLog.getSpendTime() > SEC_1) {//1秒 - 2秒
            usedTimesLevel = "B";
        } else if (webLog.getSpendTime() > MS_100) {//100毫秒 - 1秒
            usedTimesLevel = "A";
        } else {//100毫秒以内
            usedTimesLevel = "SSS";
        }

        List<String> listTag = new ArrayList<>();
        listTag.add("url=" + webLog.getPath());
        listTag.add("method=" + webLog.getMethod());
        listTag.add("spendTime=" + webLog.getSpendTime());
        listTag.add("description=" + webLog.getDesc());
        listTag.add("tokenCode=" + webLog.getRequestToken());
        listTag.add("usedTimesLevel=" + usedTimesLevel);

        String log = String.format("[%s]" +
                        "%nrequestPath: %s[%s]" +
                        "%nreponseData: %s" +
                        "%nrequestTime: %s" +
                        "%nresponseTime: %s" +
                        "%nspendTime: %s" +
                        "%nmethod: %s" +
                        "%nrequestIp: %s" +
                        "%ntokenCode: %s" +
                        "%nrequestData: %s",

                StringUtil.join(listTag, "],["),
                webLog.getPath(),
                webLog.getDesc(),
                webLog.getResponseData(),
                LocalDateTimeUtil.toFormatFullString(webLog.getRequestTime()),
                LocalDateTimeUtil.toFormatFullString(webLog.getResponseTime()),
                webLog.getSpendTime(),
                webLog.getMethod(),
                webLog.getRequestIP(),
                webLog.getRequestToken(),
                webLog.getRequestData()
        );

        logger.info(log);
        return result;
    }

    /**
     * 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.isEmpty(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;
        }
    }
}