Add token auth

login.go

@@ -8,24 +8,31 @@ import (
 	"golang.org/x/oauth2"
 )
 
-
 func noDevice(ctx context.Context, devices []tesla.Device) (d tesla.Device, passcode string, err error) {
 	return tesla.Device{}, "", nil
 }
 func login(ctx context.Context, username string, password string, tok string) (string, error) {
-	client, err := tesla.NewClient(
-		ctx,
-		tesla.WithMFAHandler(noDevice),
-		tesla.WithToken(&oauth2.Token{
-			RefreshToken: tok,
-		}),
-		tesla.WithCredentials(username, password),
-	)
+	var client *tesla.Client
+	var err error
+	if tok != "" {
+		client, err = tesla.NewClient(
+			ctx,
+			tesla.WithMFAHandler(noDevice),
+			tesla.WithToken(&oauth2.Token{
+				RefreshToken: tok,
+			}),
+		)
+	} else {
+		client, err = tesla.NewClient(
+			ctx,
+			tesla.WithMFAHandler(noDevice),
+			tesla.WithCredentials(username, password),
+		)
+	}
 	if err != nil {
 		log.LogErrorType(err)
 		return "", err
 	}
-
 	t, err := client.Token()
 	if err != nil {
 		log.LogErrorType(err)