package middleware

import (
	"encoding/json"
	"errors"
	"fmt"
	"surveyService/cache"
	"surveyService/response"
	"surveyService/util/constants"

	"github.com/gin-gonic/gin"
	"github.com/go-redis/redis/v8"
	"gogs.uu.mdfitnesscao.com/cuiguohai/sdk"
)

func AuthorizeMember() gin.HandlerFunc {
	return func(c *gin.Context) {
		// 如果有第三方的拦截逻辑，跳过该部分
		surveyToken := c.Request.Header.Get("surveyToken")
		if surveyToken == "" {
			token := c.Request.Header.Get("token")
			if token == "" {
				response.Fail(c, response.ErrAuthorizationExpired)
				return
			}
			// 拿到用户系统的资料
			currentUser, err := getMemberTokenInfo[*sdk.AuthMember](token)
			if err != nil {
				response.Fail(c, err)
				return
			}
			c.Set(constants.MemberCacheKey, currentUser)
		}
		c.Next()
	}
}

// 根据Token获取用户信息
func getMemberTokenInfo[T any](token string) (T, *response.ErrCode) {
	// 检查token是否存在
	var currentUser T
	cacheKey := fmt.Sprintf("archivesService:Authorize:Token:%s", token)
	userInfoJson, err := cache.Instance().Get(cacheKey)
	if err != nil {
		if errors.Is(err, redis.Nil) {
			return currentUser, &response.ErrCode{
				Code: response.ErrAuthorizationExpired.Code,
				Msg:  "登录已过期，请重新登录",
			}
		}
		return currentUser, response.Err
	}

	err = json.Unmarshal([]byte(userInfoJson), &currentUser)
	if err != nil {
		return currentUser, response.Err
	}
	return currentUser, nil
}