From 9b14bf82357d12b8b0441bc08bde3e1f245fd739 Mon Sep 17 00:00:00 2001
From: Daniel Seifert <git@daniel-seifert.com>
Date: Tue, 7 Jan 2025 14:01:44 +0100
Subject: [PATCH] check for empty credentials

---
 src/Connection.php | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/Connection.php b/src/Connection.php
index e64b601..8c9e224 100644
--- a/src/Connection.php
+++ b/src/Connection.php
@@ -17,8 +17,10 @@ declare(strict_types=1);
 
 namespace D3\KlicktippPhpClient;
 
+use Assert\Assert;
 use Composer\InstalledVersions;
 use D3\KlicktippPhpClient\Exceptions\BaseException;
+use D3\KlicktippPhpClient\Exceptions\NoCredentialsException;
 use GuzzleHttp\Client;
 use GuzzleHttp\ClientInterface;
 use GuzzleHttp\Cookie\CookieJar;
@@ -47,6 +49,14 @@ class Connection
 
     public function __construct(string $client_key, string $secret_key)
     {
+        Assert::lazy()
+            ->setExceptionClass(NoCredentialsException::class)
+            ->that($client_key, 'client_key')
+            ->notBlank()
+            ->that($secret_key, 'secret_key')
+            ->notBlank()
+            ->verifyNow();
+
         $this->client_key = $client_key;
         $this->secret_key = $secret_key;
         $this->cookies_jar = new CookieJar();