package middlewares

import (
	"errors"
	"github.com/gin-gonic/gin"
	"github.com/golang-jwt/jwt"
	"github.com/han-joker/moo-layout/api/moo/confm"
	"github.com/han-joker/moo-layout/api/moo/dbm"
	"github.com/han-joker/moo-layout/api/moo/logm"
	"github.com/han-joker/moo-layout/api/panel/models"
	"github.com/han-joker/moo-layout/api/tables"
	"net/http"
	"strconv"
	"strings"
)

func JwtToken(c *gin.Context) {
	// before request
	header := models.UserJwtTokenHeader{}
	if err := c.ShouldBindHeader(&header); err != nil {
		logm.Get().Info(err.Error())
		c.JSON(http.StatusForbidden, gin.H{
			"error": err.Error(),
		})
		c.Abort()
		return
	}

	tokenString := strings.Replace(header.Authorization, "Bearer ", "", 1)
	token, err := jwt.ParseWithClaims(tokenString, &jwt.StandardClaims{}, func(token *jwt.Token) (interface{}, error) {
		return []byte(confm.Get().String("app.signingKey")), nil
	})
	if err != nil {
		logm.Get().Info(err.Error())
		c.JSON(http.StatusForbidden, gin.H{
			"error": err.Error(),
		})
		c.Abort()
		return
	}

	claims, ok := token.Claims.(*jwt.StandardClaims)
	if !ok {
		err := errors.New("token claim type error")
		logm.Get().Info(err.Error())
		c.JSON(http.StatusForbidden, gin.H{
			"error": err.Error(),
		})
		c.Abort()
		return
	}

	if !token.Valid {
		err := errors.New("token valid error")
		logm.Get().Info(err.Error())
		c.JSON(http.StatusForbidden, gin.H{
			"error": err.Error(),
		})
		c.Abort()
		return
	}

	id, err := strconv.ParseUint(claims.Audience, 10, 0)
	if err != nil {
		logm.Get().Info(err.Error())
		c.JSON(http.StatusForbidden, gin.H{
			"error": err.Error(),
		})
		c.Abort()
		return
	}
	user := tables.User{}
	if err := dbm.Get().Where("id=?", id).First(&user).Error; err != nil {
		logm.Get().Info(err.Error())
		c.JSON(http.StatusForbidden, gin.H{
			"error": err.Error(),
		})
		c.Abort()
		return
	}

	if user.JWTToken != tokenString {
		err := errors.New("token error")
		logm.Get().Info(err.Error())
		c.JSON(http.StatusForbidden, gin.H{
			"error": err.Error(),
		})
		c.Abort()
		return
	}

	c.Set("user", user)
	c.Next()
}