From 5ab43ffc73b56f0b1943e460b30c2e90bef5a1a2 Mon Sep 17 00:00:00 2001
From: Daniel Seifert <ds@shopmodule.com>
Date: Thu, 14 Jul 2022 09:38:59 +0200
Subject: [PATCH] make sender number and sender country optional

---
 src/Application/Model/Configuration.php | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/src/Application/Model/Configuration.php b/src/Application/Model/Configuration.php
index 3a52c73..90f8777 100644
--- a/src/Application/Model/Configuration.php
+++ b/src/Application/Model/Configuration.php
@@ -41,26 +41,25 @@ class Configuration
     }
 
     /**
-     * @return string
+     * @return string|null
      */
-    public function getSmsSenderNumber(): string
+    public function getSmsSenderNumber()
     {
         $number = trim(Registry::getConfig()->getConfigParam('d3linkmobility_smsSenderNumber'));
 
-        Assert::that($number)->string()->notEmpty();
-
-        return $number;
+        return strlen($number) ? $number : null;
     }
 
     /**
-     * @return string
+     * @return string|null
      */
     public function getSmsSenderCountry(): string
     {
         $country = trim(Registry::getConfig()->getConfigParam('d3linkmobility_smsSenderCountry'));
+        $country = strlen($country) ? strtoupper($country) : null;
 
-        Assert::that($country)->string()->length(2);
+        Assert::that($country)->null() || Assert::that($country)->string()->length(2);
 
-        return strtoupper($country);
+        return $country;
     }
 }