package cc.mrbird.febs.common.aspect;

import cc.mrbird.febs.common.annotation.SubmitRepeat;
import cc.mrbird.febs.common.exception.LimitAccessException;
import cc.mrbird.febs.common.utils.AppContants;
import cc.mrbird.febs.common.utils.LoginUserUtil;
import cc.mrbird.febs.common.utils.RedisUtils;
import cn.hutool.core.util.StrUtil;
import cn.hutool.crypto.asymmetric.KeyType;
import cn.hutool.crypto.asymmetric.RSA;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.*;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;

@Slf4j
@Aspect
@Component
public class SubmitRepeatAspect {
    @Resource
    private RedisUtils redisUtil;

    private String key;

    @Pointcut("@annotation(submitRepeat)")
    public void submitRepeatPointCut(SubmitRepeat submitRepeat) {

    }

    @Before("submitRepeatPointCut(submitRepeat)")
    public void before(SubmitRepeat submitRepeat) {
    }

    @Around("submitRepeatPointCut(submitRepeat)")
    public Object around(ProceedingJoinPoint joinPoint, SubmitRepeat submitRepeat) throws Throwable {
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = attributes.getRequest();

        String headerToken = request.getHeader("token");

        RSA rsa = new RSA(AppContants.PRIVATE_KEY, null);
        String[] tokens = StrUtil.split(rsa.decryptStr(headerToken, KeyType.PrivateKey), "_");
        String token = tokens[0];
        String uri = request.getRequestURI();
        Long mId = LoginUserUtil.getLoginUser().getId();
        log.info("#token : {}, uri : {}, mId : {}#", token, uri, mId);
        key = mId + "_" + uri;
        boolean flag = redisUtil.setNotExist(key, "1", 1);
        if (flag) {
            Object result = joinPoint.proceed();
            redisUtil.del(key);
            return result;
        } else {
            throw new LimitAccessException("请勿重复提交");
        }
    }

    @After("submitRepeatPointCut(submitRepeat)")
    public void after(SubmitRepeat submitRepeat) {

    }

}