feat: API endpoint for last update of XML data

api.http

@@ -13,6 +13,11 @@ GET {{base_url}}/api/crm-attributes
 Accept: application/json
 Authorization: Bearer {{$auth.token("oauth2_profile")}}
 
+### API last update at
+GET {{base_url}}/api/last-update
+Accept: application/json
+Authorization: Bearer {{$auth.token("oauth2_api")}}
+
 ### API countries
 GET {{base_url}}/api/countries
 Accept: application/json

src/Controller/Api/LastUpdateController.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace App\Controller\Api;
+
+use League\Flysystem\FilesystemOperator;
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\JsonResponse;
+use Symfony\Component\Routing\Attribute\Route;
+use Symfony\Component\Security\Http\Attribute\IsGranted;
+
+#[Route('/api')]
+#[IsGranted('ROLE_OAUTH2_API')]
+class LastUpdateController extends AbstractController
+{
+    public function __construct(private readonly FilesystemOperator $xmlExport)
+    {
+    }
+
+    #[Route(path: '/last-update', name: 'api_last_update', methods: ['GET'])]
+    public function index(): JsonResponse
+    {
+        if (false === $this->xmlExport->has('uebertragung.info')) {
+            $lastUploadAt = null;
+        } else {
+            $file = $this->xmlExport->read('uebertragung.info');
+            $lines = explode("\n", $file);
+            $line = trim($lines[0]);
+
+            if (true === empty($line)) {
+                $lastUploadAt = null;
+            } else {
+                $lastUploadAt = \DateTime::createFromFormat('d.m.Y H:i:s', $line);
+            }
+        }
+
+        return $this->json(['timestamp' => $lastUploadAt->format('Y-m-d H:i:s')]);
+    }
+}