ilk

svc/auth/jwt.go

@@ -0,0 +1,53 @@
+package auth
+
+import (
+	"errors"
+	"os"
+
+	"github.com/golang-jwt/jwt/v5"
+)
+
+// package auth
+
+func jwtSecret() ([]byte, error) {
+	sec := os.Getenv("JWT_SECRET")
+	if len(sec) < 10 {
+		return nil, errors.New("JWT_SECRET environment boş veya çok kısa")
+	}
+	return []byte(sec), nil
+}
+
+// ✅ TEK VE DOĞRU TOKEN ÜRETİCİ
+func GenerateToken(claims Claims, username string, change bool) (string, error) {
+	secret, err := jwtSecret()
+	if err != nil {
+		return "", err
+	}
+
+	token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
+	return token.SignedString(secret)
+}
+
+func ValidateToken(tokenStr string) (*Claims, error) {
+	secret, err := jwtSecret()
+	if err != nil {
+		return nil, err
+	}
+
+	token, err := jwt.ParseWithClaims(
+		tokenStr,
+		&Claims{},
+		func(token *jwt.Token) (interface{}, error) {
+			return secret, nil
+		},
+	)
+	if err != nil {
+		return nil, err
+	}
+
+	claims, ok := token.Claims.(*Claims)
+	if !ok || !token.Valid {
+		return nil, errors.New("token geçersiz")
+	}
+	return claims, nil
+}