From 5c8a71bdda69bd4c08e7117d0974a06945c86a59 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bj=C3=B6rn=20P=C3=B6ttker?= <bjoern@poettker-holtrup.de>
Date: Sat, 9 May 2026 14:06:04 +0200
Subject: [PATCH] feat: add source attachment details as notes to processed
 documents

---
 .../paperless/paperless-task-processor.service.ts   | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/paperless-backend/src/paperless/paperless-task-processor.service.ts b/paperless-backend/src/paperless/paperless-task-processor.service.ts
index d54257d..8646e28 100644
--- a/paperless-backend/src/paperless/paperless-task-processor.service.ts
+++ b/paperless-backend/src/paperless/paperless-task-processor.service.ts
@@ -299,6 +299,19 @@ export class PaperlessTaskProcessorService {
       // Add Notes
       this.logger.log(`[Postprocessing] Task ${t.TaskId} - Füge Notizen hinzu`);
       await this.paperlessService.addNote(document.id, `Task bearbeitet: ${new Date().toLocaleString('de-DE')}`);
+
+      if (t.SourceAttachmentID) {
+        const attachment = await this.attachmentRepo.findOne({ where: { Id: t.SourceAttachmentID }, relations: ['EmailMessage'] });
+        if (attachment) {
+          const rangePart = t.SourceAttachmentRange && t.SourceAttachmentRange !== 'full'
+            ? ` | Seiten: ${t.SourceAttachmentRange}`
+            : '';
+          const messageId = attachment.EmailMessage?.MessageId ?? String(attachment.EmailMessageId);
+          await this.paperlessService.addNote(document.id, `E-Mail-ID: ${messageId} | Datei: ${attachment.FileName}${rangePart}`);
+          this.logger.log(`[Postprocessing] Task ${t.TaskId} - Herkunfts-Notiz hinzugefügt`);
+        }
+      }
+
       if (t.BarcodeJson) {
         await this.paperlessService.addNote(document.id, t.BarcodeJson);
         this.logger.log(`[Postprocessing] Task ${t.TaskId} - BarcodeJson-Notiz hinzugefügt`);