feat: add Backend mit allen aktuellen features + Demo Daten

development-system/public/booking/confirm.php

@@ -0,0 +1,25 @@
+<?php
+
+declare(strict_types=1);
+
+require __DIR__.'/backend.php';
+
+header('Content-Type: text/html; charset=utf-8');
+header('Cache-Control: no-store');
+header('X-Content-Type-Options: nosniff');
+
+function page(string $title, string $message, bool $success = false): never
+{
+    $safeTitle = htmlspecialchars($title, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8');
+    $safeMessage = htmlspecialchars($message, ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8');
+    $class = $success ? 'success' : 'error';
+    echo "<!doctype html><html lang=\"de\"><meta charset=\"utf-8\"><meta name=\"viewport\" content=\"width=device-width, initial-scale=1\"><title>$safeTitle</title><style>body{font:18px/1.5 Arial,sans-serif;margin:0;background:#f3f6f3;color:#202020}.box{max-width:42rem;margin:12vh auto;padding:2rem;background:#fff;border-top:6px solid #08752a}.success{color:#08752a}.error{color:#8a1515}a{color:#08752a}</style><main class=\"box\"><h1 class=\"$class\">$safeTitle</h1><p>$safeMessage</p><p><a href=\"/perspektivwerk/\">Zurück zur Terminbuchung</a></p></main></html>";
+    exit;
+}
+
+try {
+    $registration = bookingConfirmRegistration(bookingDatabase(), (string) ($_GET['token'] ?? ''));
+    page('Termin bestätigt', "Vielen Dank. Ihr Termin \"{$registration['title']}\" ist verbindlich bestätigt.", true);
+} catch (Throwable $exception) {
+    page('Bestätigung nicht möglich', $exception->getMessage());
+}