added download link

src/Controller/MetadataProfileController.php

@@ -19,6 +19,10 @@ use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\HttpFoundation\Request;
 use Drupal\Core\Database\Connection;
 use Drupal\Core\Entity\EntityTypeManagerInterface;
+use Drupal\node\NodeTypeInterface;
+use Symfony\Component\HttpFoundation\BinaryFileResponse;
+use Symfony\Component\HttpFoundation\ResponseHeaderBag;
+
 
 class MetadataProfileController extends ControllerBase {
 
@@ -162,6 +166,16 @@ class MetadataProfileController extends ControllerBase {
 
     $metadata_profile = $this->getMetadataProfile();
 
+    $entity = $this->routeMatch->getParameter($this->entityType);
+    $build['download'] = [
+      '#type' => 'link',
+      '#title' => $this->t('Download profile'),
+      '#url' => $entity->toUrl('metadata-download'),
+      '#attributes' => [
+        'class' => ['button', 'button--primary'],
+      ],
+      '#weight' => -10,
+    ];
     $build['summary_table'] = [
       '#type' => 'container',
       '#attributes' => ['class' => ['scrolling-table-container']],
@@ -867,27 +881,43 @@ class MetadataProfileController extends ControllerBase {
    * @return \Symfony\Component\HttpFoundation\BinaryFileResponse
    *   The file download response.
    */
-  public function download() {
+
+
+
+  public function download(NodeTypeInterface $node_type) {
+    // Rebuild your state from the entity
+    $this->entityBundle = $node_type->id();
+    $this->entityTypeBundleOf = $node_type->getEntityType()->getBundleOf();
+
     $contentType = $this->entityBundle;
     $entityKey = $this->entityTypeBundleOf;
+
     $headers = $this->getHeaders();
     $metadata_profile = $this->getMetadataProfile();
     $rows = $this->getRows($metadata_profile);
     $rows = $this->sanitizeRowsForCSV($rows);
+
     $filename_slug = "{$entityKey}__{$contentType}.csv";
     $filename = $this->fileSystem->getTempDirectory() . '/' . $filename_slug;
-    // Write file to temporary filesystem.
+
     if (file_exists($filename)) {
       $this->fileSystem->delete($filename);
     }
+
     $fh = fopen($filename, 'w');
     fputcsv($fh, $headers);
     foreach ($rows as $row) {
       fputcsv($fh, $row);
     }
     fclose($fh);
-    $request = new Request(['file' => $filename_slug]);
-    return $this->fileDownloadController->download($request, 'temporary');
+
+    $response = new BinaryFileResponse($filename);
+    $response->setContentDisposition(
+      ResponseHeaderBag::DISPOSITION_ATTACHMENT,
+      $filename_slug
+    );
+
+    return $response;
   }
 
   private function formatFacets(array $field_profile) {

src/Routing/RouteSubscriber.php

@@ -40,8 +40,7 @@ class RouteSubscriber extends RouteSubscriberBase {
         $collection->add("entity.$entity_type_id.metadata_profile", $route);
       }
       if ($route = $this->getEntityDownloadRoute($entity_type)) {
-        $collection->add("entity.$entity_type_id.metadata_profile.download", $route);
-      }
+        $collection->add("entity.$entity_type_id.metadata_download", $route);      }
     }
   }