chore: sync

sproutgate-backend/internal/auth/jwt.go

@@ -0,0 +1,49 @@
+package auth
+
+import (
+	"errors"
+	"time"
+
+	"github.com/golang-jwt/jwt/v5"
+)
+
+type Claims struct {
+	Account string `json:"account"`
+	jwt.RegisteredClaims
+}
+
+func GenerateToken(secret []byte, issuer string, account string, ttl time.Duration) (string, time.Time, error) {
+	if account == "" {
+		return "", time.Time{}, errors.New("account is required")
+	}
+	expiresAt := time.Now().Add(ttl)
+	claims := Claims{
+		Account: account,
+		RegisteredClaims: jwt.RegisteredClaims{
+			Issuer:    issuer,
+			Subject:   account,
+			ExpiresAt: jwt.NewNumericDate(expiresAt),
+			IssuedAt:  jwt.NewNumericDate(time.Now()),
+		},
+	}
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
+	signed, err := token.SignedString(secret)
+	return signed, expiresAt, err
+}
+
+func ParseToken(secret []byte, issuer string, tokenString string) (*Claims, error) {
+	if tokenString == "" {
+		return nil, errors.New("token is required")
+	}
+	token, err := jwt.ParseWithClaims(tokenString, &Claims{}, func(token *jwt.Token) (any, error) {
+		return secret, nil
+	}, jwt.WithIssuer(issuer))
+	if err != nil {
+		return nil, err
+	}
+	claims, ok := token.Claims.(*Claims)
+	if !ok || !token.Valid {
+		return nil, errors.New("invalid token")
+	}
+	return claims, nil
+}