Fix for saving message id (#6)

* Fix for saving message id

* Revert "Fix for saving message id"

This reverts commit 32570b4.

* Fix for saving message id

* Fix for saving message id (handle the case when message-id header is null)

* treat various cases for message-id type

* treated the default case for msg id class type

* Use instanceof in getMessageId method

---------

Co-authored-by: Tjardo <info@tjardo.com>

src/Listeners/CreateMailViewerItem.php

@@ -40,11 +40,30 @@ private function formatHeaders(Headers $headers): ?array
 
         return [
             'date' => $headers->get('date'),
-            'message-id' => $headers->get('message-id'),
+            'message-id' => $this->getMessageId($headers),
             'from' => $headers->get('from'),
         ];
     }
 
+    private function getMessageId(Headers $headers): mixed
+    {
+        $messageId = $headers->get('message-id');
+
+        if ($messageId instanceof \Symfony\Component\Mime\Header\UnstructuredHeader) {
+            return $messageId->getBodyAsString();
+        }
+
+        if ($messageId instanceof \Symfony\Component\Mime\Header\IdentificationHeader) {
+            return $messageId->getIds();
+        }
+
+        if (is_object($messageId)) {
+            return $messageId->toString();
+        }
+
+        return $messageId;
+    }
+
     private function formatRecipients(Email $message): array
     {
         return array_merge(