Add location title to event teaser payload

src/EventListener/EventTeaserDataAttributesListener.php

@@ -25,12 +25,14 @@ class EventTeaserDataAttributesListener
         $tagMap = $this->fetchTagMap($eventIds);
         $organizationMap = $this->fetchOrganizationMap($eventIds);
         $locationMap = $this->fetchLocationMap($eventIds);
+        $locationTitleMap = $this->fetchLocationTitleMap($locationMap);
 
         foreach ($events as $dayKey => $eventsPerDay) {
             foreach ($eventsPerDay as $timeKey => $eventsPerTime) {
                 foreach ($eventsPerTime as $index => $event) {
                     if (!isset($event['id'])) {
                         $events[$dayKey][$timeKey][$index]['location_id'] = null;
+                        $events[$dayKey][$timeKey][$index]['location_title'] = '';
                         $events[$dayKey][$timeKey][$index]['event_tags'] = '';
                         $events[$dayKey][$timeKey][$index]['event_org'] = '';
 
@@ -45,6 +47,11 @@ class EventTeaserDataAttributesListener
                         $events[$dayKey][$timeKey][$index]['location_id'] = $locationMap[$eventId] ?? null;
                     }
 
+                    $locationId = $events[$dayKey][$timeKey][$index]['location_id'];
+                    $events[$dayKey][$timeKey][$index]['location_title'] = null !== $locationId
+                        ? ($locationTitleMap[(int) $locationId] ?? '')
+                        : '';
+
                     $events[$dayKey][$timeKey][$index]['event_tags'] = implode(',', $tagMap[$eventId] ?? []);
                     $events[$dayKey][$timeKey][$index]['event_org'] = implode(',', $organizationMap[$eventId] ?? []);
                 }
@@ -183,4 +190,36 @@ class EventTeaserDataAttributesListener
 
         return $map;
     }
+
+    /** @param array<int, int|null> $locationMap
+     *  @return array<int, string>
+     */
+    private function fetchLocationTitleMap(array $locationMap): array
+    {
+        $locationIds = array_values(array_unique(array_filter(array_map('intval', $locationMap), static fn (int $id): bool => $id > 0)));
+
+        if ([] === $locationIds) {
+            return [];
+        }
+
+        $rows = $this->connection->executeQuery(
+            'SELECT id, title FROM tl_location WHERE id IN (?)',
+            [$locationIds],
+            [ArrayParameterType::INTEGER],
+        )->fetchAllAssociative();
+
+        $map = [];
+
+        foreach ($rows as $row) {
+            $locationId = (int) ($row['id'] ?? 0);
+
+            if ($locationId <= 0) {
+                continue;
+            }
+
+            $map[$locationId] = (string) ($row['title'] ?? '');
+        }
+
+        return $map;
+    }
 }