move controller service logics into a service

src/Controller/Admin/TagRebuildStreamController.php

@@ -4,19 +4,17 @@ declare(strict_types=1);
 
 namespace App\Controller\Admin;
 
-use App\Entity\TagRebuildJob;
-use Doctrine\ORM\EntityManagerInterface;
+use App\Service\TagRebuildStatusProvider;
 use Symfony\Component\HttpFoundation\StreamedResponse;
 use Symfony\Component\Routing\Attribute\Route;
 
 final class TagRebuildStreamController
 {
     #[Route('/admin/tags/rebuild/stream', name: 'admin_tags_rebuild_stream')]
-    public function stream(EntityManagerInterface $em): StreamedResponse
+    public function stream(TagRebuildStatusProvider $provider): StreamedResponse
     {
-        $response = new StreamedResponse(function () use ($em) {
+        $response = new StreamedResponse(function () use ($provider) {
 
-            // Sofort erstes Event senden (wichtig!)
             echo "event: ping\n";
             echo "data: " . json_encode(['init' => true]) . "\n\n";
 
@@ -25,24 +23,11 @@ final class TagRebuildStreamController
 
             while (!connection_aborted()) {
 
-                $em->clear();
+                $data = $provider->getLatestStatus();
 
-                $job = $em->createQueryBuilder()
-                    ->select('j')
-                    ->from(TagRebuildJob::class, 'j')
-                    ->orderBy('j.createdAt', 'DESC')
-                    ->setMaxResults(1)
-                    ->getQuery()
-                    ->getOneOrNullResult();
-
-                if ($job) {
+                if ($data !== null) {
                     echo "event: message\n";
-                    echo "data: " . json_encode([
-                            'status' => $job->getStatus(),
-                            'startedAt' => $job->getStartedAt()?->format(DATE_ATOM),
-                            'finishedAt' => $job->getFinishedAt()?->format(DATE_ATOM),
-                            'error' => $job->getErrorMessage(),
-                        ]) . "\n\n";
+                    echo "data: " . json_encode($data) . "\n\n";
 
                     @ob_flush();
                     @flush();
@@ -55,7 +40,7 @@ final class TagRebuildStreamController
         $response->headers->set('Content-Type', 'text/event-stream');
         $response->headers->set('Cache-Control', 'no-cache');
         $response->headers->set('Connection', 'keep-alive');
-        $response->headers->set('X-Accel-Buffering', 'no'); // 🔥 wichtig bei nginx
+        $response->headers->set('X-Accel-Buffering', 'no');
 
         return $response;
     }

src/Service/TagRebuildStatusProvider.php

@@ -0,0 +1,39 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Service;
+
+use App\Entity\TagRebuildJob;
+use Doctrine\ORM\EntityManagerInterface;
+
+final readonly class TagRebuildStatusProvider
+{
+    public function __construct(
+        private EntityManagerInterface $em
+    ) {}
+
+    public function getLatestStatus(): ?array
+    {
+        $this->em->clear();
+
+        $job = $this->em->createQueryBuilder()
+            ->select('j')
+            ->from(TagRebuildJob::class, 'j')
+            ->orderBy('j.createdAt', 'DESC')
+            ->setMaxResults(1)
+            ->getQuery()
+            ->getOneOrNullResult();
+
+        if (!$job instanceof TagRebuildJob) {
+            return null;
+        }
+
+        return [
+            'status'     => $job->getStatus(),
+            'startedAt'  => $job->getStartedAt()?->format(DATE_ATOM),
+            'finishedAt' => $job->getFinishedAt()?->format(DATE_ATOM),
+            'error'      => $job->getErrorMessage(),
+        ];
+    }
+}