package com.datao.config;

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

//import javax.servlet.http.HttpServletRequest;
//import javax.servlet.http.HttpServletResponse;
import java.lang.reflect.Method;
import java.util.HashMap;

/**
 * 添加拦截器
 */
//@Component
public class TokenInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
    throws Exception {
//        System.out.println(String.format("[%s]", new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()))
//                    +" preHandle "+request.getRequestURL());
        //如果不是映射到方法直接放行
        if(!(handler instanceof HandlerMethod)){
            return true;
        }
        HandlerMethod handlerMethod = (HandlerMethod)handler;
        Method method = handlerMethod.getMethod();

        HashMap<String,String> hashMap = new HashMap<>();
        String token = request.getHeader("Authorization");
        if((token == null || token.isEmpty())
                && method.isAnnotationPresent(PassToken.class)) { //带有PassToken注解的方法不处理
            return true;
        }

//        String msg = "";
//        try {
//            if(token != null && token!="") {
//                TokenUtil.verifyToken(token.substring(7));
//                return true;
//            }
//            else{
//                msg = "token无效";
//            }
//        }catch (SignatureVerificationException e){
////            e.printStackTrace();
//            msg = "签名不一致";
//        }catch (TokenExpiredException e){
////            e.printStackTrace();
//            msg = "令牌过期异常";
//        }catch (AlgorithmMismatchException e) {
////            e.printStackTrace();
//            msg = "算法不匹配异常";
//        }catch (InvalidClaimException e){
////            e.printStackTrace();
//            msg = "失效的claim异常";
//        }catch (Exception e){
////            e.printStackTrace();
//            msg = "token无效";
//        }

//        AjaxResult result = new AjaxResult(HttpStatus.UNAUTHORIZED.value(),msg);
//
//        String resultJson = JSON.toJSONString(result);
//        response.setContentType("application/json;charset=utf-8");
//        response.getWriter().print(resultJson);
        return false;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
    ModelAndView modelAndView) throws Exception {
//        System.out.println("postHandle");
        HandlerInterceptor.super.postHandle(request, response, handler, modelAndView);
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response,
    Object handler, Exception ex) throws Exception {
//        System.out.println("afterCompletion");
        HandlerInterceptor.super.afterCompletion(request, response, handler, ex);
    }
}