package middlewares

import (
	"BE-MiniERP/config"
	"strings"

	"github.com/gofiber/fiber/v2"
	"github.com/golang-jwt/jwt/v4"
)

func JWTProtected() fiber.Handler {
	return func(c *fiber.Ctx) error {
		authHeader := c.Get("Authorization")
		if authHeader == "" {
			return c.Status(fiber.StatusUnauthorized).JSON(fiber.Map{
				"message": "Missing Authorization header",
			})
		}

		tokenString := strings.TrimPrefix(authHeader, "Bearer ")
		token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
			return []byte(config.GetConfig().JWTSecret), nil
		})

		if err != nil || !token.Valid {
			return c.Status(fiber.StatusUnauthorized).JSON(fiber.Map{
				"message": "Invalid or expired token",
			})
		}

		claims, ok := token.Claims.(jwt.MapClaims)
		if !ok {
			return c.Status(fiber.StatusUnauthorized).JSON(fiber.Map{
				"message": "Invalid token claims",
			})
		}

		c.Locals("user_id", uint(claims["user_id"].(float64)))
		c.Locals("role", claims["role"].(string))
		return c.Next()
	}
}