From dd8ce885563cdb4afac5ddd6ef4b87be9fdffec2 Mon Sep 17 00:00:00 2001
From: "Torsten Schulz (local)" <tsschulz@gmx.net>
Date: Mon, 16 Mar 2026 22:04:57 +0100
Subject: [PATCH] Implement form validation and error handling for email
 sending in Register class

---
 include/register.php | 10 ++++++++--
 include/renderer.php |  7 ++++++-
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/include/register.php b/include/register.php
index 0bf047a..6c6e905 100644
--- a/include/register.php
+++ b/include/register.php
@@ -15,9 +15,15 @@ class Register extends Renderer {
     protected string $templateName = 'renderer';
     
     protected function formAction(): void {
+        if (!$this->formCheckFields()) {
+            // Bei Validierungsfehlern: nichts speichern, keine Mail, Fehler im Formular anzeigen
+            return;
+        }
         $this->writeToDb();
         $this->sendEmail();
-        $this->templateName = 'register_successful';
+        if (count($this->errors) === 0) {
+            $this->templateName = 'register_successful';
+        }
     }
     
     protected function formCheckFields(): bool {
@@ -41,7 +47,7 @@ class Register extends Renderer {
         if (filter_input(INPUT_POST, 'accept', FILTER_SANITIZE_NUMBER_INT) !== '1') {
             $this->errors['accept'] = 'Sie müssen der Speicherung Ihrer Daten zustimmen.';
         }
-        return (count($errors) === 0);
+        return (count($this->errors) === 0);
     }
     
     protected function writeToDb(): void {
diff --git a/include/renderer.php b/include/renderer.php
index 362117c..fe8bed5 100644
--- a/include/renderer.php
+++ b/include/renderer.php
@@ -461,7 +461,12 @@ class Renderer {
             $mail->addStringAttachment($attachment['content'], $fileName, 'base64', $attachment['type']);
 
         }
-        $mail->send();
+        try {
+            $mail->send();
+        } catch (Exception $e) {
+            error_log('Mailversand fehlgeschlagen: ' . $e->getMessage());
+            $this->errors[] = 'Die Bestätigungs-Email konnte nicht versendet werden. Bitte versuchen Sie es später erneut oder kontaktieren Sie uns direkt.';
+        }
     }
     
     protected function connectToImap($folder = ''): bool {