seo json endDate und price tag angepasst

functions.php

@@ -105,13 +105,16 @@ function handle_image_upload(?array $file): ?string {
 function render_event_jsonld_graph(array $events): string {
     $graph = [];
     foreach ($events as $e) {
-        $start = $e['date'] . 'T' . ($e['time'] ?? '19:30') . ':00+02:00'; // Berlin Zeit im Sommer; vereinfacht
+        $startTime = $e['time'] ?? '19:30';
+        $start = $e['date'] . 'T' . $startTime . ':00+02:00'; // Berlin Zeit im Sommer; vereinfacht
         $price = $e['price'] ?? '';
+        $priceValue = normalize_price_value($price);
         $validFrom = $e['created_at'] ?? $e['updated_at'] ?? null;
+        $endDate = build_event_end_date($e, $startTime);
         $offers = $price !== '' ? array_filter([
             "@type" => "Offer",
             "url" => event_url($e),
-            "price" => preg_replace('/[^\d,\.]/', '', $price),
+            "price" => $priceValue,
             "priceCurrency" => "EUR",
             "availability" => "https://schema.org/InStock",
             "validFrom" => $validFrom
@@ -122,6 +125,7 @@ function render_event_jsonld_graph(array $events): string {
             "name" => $e['title'],
             "url" => event_url($e),
             "startDate" => $start,
+            "endDate" => $endDate,
             "eventStatus" => "https://schema.org/EventScheduled",
             "eventAttendanceMode" => "https://schema.org/OfflineEventAttendanceMode",
             "performer" => !empty($e['speaker']) ? [
@@ -159,6 +163,34 @@ function h(?string $s): string {
     return htmlspecialchars($s ?? '', ENT_QUOTES | ENT_SUBSTITUTE, 'UTF-8');
 }
 
+function normalize_price_value(string $price): ?string {
+    $value = preg_replace('/[^\d,\.]/', '', $price);
+    if ($value === '') {
+        return null;
+    }
+    if (substr_count($value, ',') > 0 && substr_count($value, '.') > 0) {
+        $value = str_replace('.', '', $value);
+        $value = str_replace(',', '.', $value);
+    } else {
+        $value = str_replace(',', '.', $value);
+    }
+    return rtrim($value, '.');
+}
+
+function build_event_end_date(array $event, string $fallbackTime): ?string {
+    $endDate = trim((string)($event['end_date'] ?? ''));
+    $endTime = trim((string)($event['end_time'] ?? ''));
+    $time = $endTime !== '' ? $endTime : $fallbackTime;
+    if ($endDate !== '') {
+        return $endDate . 'T' . $time . ':00+02:00';
+    }
+    // Falls keine Endzeit gepflegt ist, nehmen wir das Startdatum, damit Schema-Validatoren zufrieden sind.
+    if (!empty($event['date'])) {
+        return $event['date'] . 'T' . $time . ':00+02:00';
+    }
+    return null;
+}
+
 /**
  * Erkennt, ob HTML-Tags enthalten sind.
  */