package api

import (
	"errors"
	"github.com/gin-gonic/gin"
	"github.com/golang-jwt/jwt/v5"
	"log"
	"qnc-server/config"
	"qnc-server/model/response"
	"qnc-server/utils"
	"strconv"
	"time"
)

func JWTAuth() gin.HandlerFunc {
	return func(c *gin.Context) {
		token := utils.GetToken(c)
		if token == "" {
			response.NoAuth("未登录", c)
			c.Abort()
			return
		}
		j := utils.NewJWT()
		// parseToken 解析token包含的信息
		claims, err := j.ParseToken(token)
		if err != nil {
			if errors.Is(err, utils.TokenExpired) {
				response.NoAuth("授权已过期", c)
				utils.ClearToken(c)
				c.Abort()
				return
			}
			response.NoAuth(err.Error(), c)
			utils.ClearToken(c)
			c.Abort()
			return
		}

		if claims.Disable {
			response.Fail(c)
			c.Abort()
			return
		}

		c.Set("claims", claims)
		if claims.ExpiresAt.Unix()-time.Now().Unix() < claims.BufferTime {
			dr, _ := utils.ParseDuration(config.ConfigData.JWT.ExpiresTime)
			claims.ExpiresAt = jwt.NewNumericDate(time.Now().Add(dr))
			newToken, _ := j.CreateTokenByOldToken(token, *claims)
			newClaims, _ := j.ParseToken(newToken)
			c.Header("new-token", newToken)
			c.Header("new-expires-at", strconv.FormatInt(newClaims.ExpiresAt.Unix(), 10))
			utils.SetToken(c, newToken, int(dr.Seconds()))
		}
		c.Next()

		if newToken, exists := c.Get("new-token"); exists {
			c.Header("new-token", newToken.(string))
		}
		if newExpiresAt, exists := c.Get("new-expires-at"); exists {
			c.Header("new-expires-at", newExpiresAt.(string))
		}
	}
}

// NotifyMiddleware 中间件
func NotifyMiddleware() gin.HandlerFunc {
	return func(c *gin.Context) {
		if config.ConfigData.Notify.Switch {
			startTime, err := utils.ParseTime(config.ConfigData.Notify.StartTime)
			if err != nil {
				log.Printf("【通知中间件】起始时间解析错误：%v", err)
				c.Next()
				return
			}

			endTime, err := utils.ParseTime(config.ConfigData.Notify.EndTime)
			if err != nil {
				log.Printf("【通知中间件】结束时间解析错误：%v", err)
				c.Next()
				return
			}

			if utils.IsInTimeRange(startTime, endTime) {
				response.FailNotify(c)
				c.Abort()
				return
			}
		}
		c.Next()
	}
}