package utils

import (
	"time"

	"github.com/golang-jwt/jwt/v5"
)

var JWTSecret = []byte("your-secret-key")

type Claims struct {
	UserID uint `json:"user_id"`
	jwt.RegisteredClaims
}

func GenerateToken(userID uint) (string, error) {
	expirationTime := time.Now().Add(24 * time.Hour)
	claims := &Claims{
		UserID: userID,
		RegisteredClaims: jwt.RegisteredClaims{
			ExpiresAt: jwt.NewNumericDate(expirationTime),
		},
	}

	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
	return token.SignedString(JWTSecret)
}

func ParseToken(tokenString string) (*Claims, error) {
	token, err := jwt.ParseWithClaims(tokenString, &Claims{}, func(token *jwt.Token) (interface{}, error) {
		return JWTSecret, nil
	})

	if claims, ok := token.Claims.(*Claims); ok && token.Valid {
		return claims, nil
	}
	return nil, err
}