package jwt

import (
	"fmt"

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

func ValidateToken(tokenString string, secretKey []byte) (bool, error) {
	token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
		if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
			return nil, fmt.Errorf("unexpected signing method: %v", token.Header["alg"])
		}
		return secretKey, nil
	})
	if err != nil {
		return false, err
	}
	if _, ok := token.Claims.(jwt.MapClaims); ok && token.Valid {
		return true, nil
	} else {
		return false, nil
	}
}

func GetPayload(tokenString string, secretKey []byte) (jwt.MapClaims, error) {
	token, err := jwt.Parse(tokenString, func(token *jwt.Token) (interface{}, error) {
		if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
			return nil, fmt.Errorf("unexpected signing method: %v", token.Header["alg"])
		}
		return secretKey, nil
	})
	if err != nil {
		return nil, err
	}
	if Claims, ok := token.Claims.(jwt.MapClaims); ok && token.Valid {
		return Claims, nil
	} else {
		return nil, nil
	}
}