utils/jwt_util.go

package utils

import (
	"time"
	"whatsapp-backend/config"

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

type JWTClaims struct {
	UserID   uuid.UUID `json:"user_id"`
	Username string    `json:"username"`
	Role     string    `json:"role"`
	jwt.RegisteredClaims
}

func GenerateAccessToken(userID uuid.UUID, username, role string, jwtConfig config.JWTConfig) (string, error) {
	claims := JWTClaims{
		UserID:   userID,
		Username: username,
		Role:     role,
		RegisteredClaims: jwt.RegisteredClaims{
			ExpiresAt: jwt.NewNumericDate(time.Now().Add(15 * time.Minute)), // 15 minutes expiration
			IssuedAt:  jwt.NewNumericDate(time.Now()),
		},
	}

	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
	return token.SignedString([]byte(jwtConfig.GetSecretKey()))
}

func GenerateRefreshToken() (string, error) {
	return uuid.New().String(), nil
}