67 lines
1.3 KiB
Go
67 lines
1.3 KiB
Go
package helper
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import (
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"errors"
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"os"
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"strconv"
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"time"
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"github.com/golang-jwt/jwt/v5"
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)
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var (
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secretKey = []byte(os.Getenv("JWT_SECRET"))
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jwtExpiration = os.Getenv("JWT_EXPIRATION")
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)
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func GenerateToken(userId string) (string, error) {
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if len(secretKey) == 0 {
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return "", errors.New("JWT_SECRET is not set")
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}
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if jwtExpiration == "" {
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return "", errors.New("JWT_EXPIRATION is not set")
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}
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jwtExpirationInt, err := strconv.Atoi(jwtExpiration)
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if err != nil {
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return "", err
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}
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claims := jwt.MapClaims{
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"userId": userId,
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"exp": time.Now().Add(time.Duration(jwtExpirationInt) * time.Hour).Unix(),
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}
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
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signedToken, err := token.SignedString(secretKey)
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if err != nil {
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return "", err
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}
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return signedToken, nil
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}
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func ValidateToken(tokenString string) (jwt.MapClaims, error) {
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if len(secretKey) == 0 {
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return nil, errors.New("JWT_SECRET is not set")
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}
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token, err := jwt.Parse(tokenString, func(t *jwt.Token) (any, error) {
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if _, ok := t.Method.(*jwt.SigningMethodHMAC); !ok {
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return nil, errors.New("unexpected signing method")
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}
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return secretKey, nil
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})
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if err != nil {
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return nil, err
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}
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if claims, ok := token.Claims.(jwt.MapClaims); ok && token.Valid {
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return claims, nil
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}
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return nil, errors.New("invalid token")
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}
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