package com.fdkankan.openApi.component;

import cn.hutool.core.util.StrUtil;
import com.fdkankan.common.constant.ErrorCode;
import com.fdkankan.common.exception.BusinessException;
import com.fdkankan.openApi.util.TokenUtil;
import org.apache.commons.lang3.StringUtils;
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.stereotype.Component;
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.util.Objects;

@Component
@Aspect
public class ValidateApiAOP {
    @Pointcut("@annotation(com.fdkankan.openApi.component.ValidateApi)")
    public void pointCut(){}
    @Around("pointCut()")
    public Object handle(ProceedingJoinPoint proceedingJoinPoint) throws Throwable{
        //获取请求对象
        ServletRequestAttributes servletRequestAttributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = servletRequestAttributes.getRequest();
        //处理
        //请求头
        String authorization =  request.getHeader("Authorization");

        if(StrUtil.isEmpty(authorization)){
            throw new BusinessException(ErrorCode.AUTH_FAIL);
        }

        if (!TokenUtil.validateToken(authorization)){
            throw new BusinessException(ErrorCode.AUTH_FAIL);
        }

        //注解处理
        Class<?> clazz = proceedingJoinPoint.getTarget().getClass();
        //方法签名
        MethodSignature methodSignature = (MethodSignature) proceedingJoinPoint.getSignature();
        Method method = clazz.getDeclaredMethod(methodSignature.getName(), methodSignature.getParameterTypes());
        return proceedingJoinPoint.proceed();
    }
}