paperless-backend/src/webhook/webhook.controller.ts

@@ -1,6 +1,7 @@
 import {
   Controller,
   Post,
+  Get,
   Body,
   Logger,
   HttpCode,
@@ -8,8 +9,11 @@ import {
   UseGuards,
   BadRequestException,
 } from '@nestjs/common';
+import { InjectRepository } from '@nestjs/typeorm';
+import { Repository } from 'typeorm';
 import { ApiKeyGuard } from '../auth/api-key.guard';
 import { PaperlessProcessorService } from '../paperless/paperless-processor.service';
+import { Setting } from '../database/entities/setting.entity';
 
 export interface PaperlessWebhookPayload {
   doc_url?: string;
@@ -18,11 +22,18 @@ export interface PaperlessWebhookPayload {
   [key: string]: any;
 }
 
+// Tag (Schlüssel) des Settings-Eintrags, der den letzten Webhook-Aufruf festhält.
+const LAST_WEBHOOK_CALL_TAG = 'last_webhook_call';
+
 @Controller('api/webhook')
 export class WebhookController {
   private readonly logger = new Logger(WebhookController.name);
 
-  constructor(private readonly paperlessProcessor: PaperlessProcessorService) {}
+  constructor(
+    private readonly paperlessProcessor: PaperlessProcessorService,
+    @InjectRepository(Setting)
+    private readonly settingRepo: Repository<Setting>,
+  ) {}
 
   @UseGuards(ApiKeyGuard)
   @Post('paperless')
@@ -33,6 +44,11 @@ export class WebhookController {
       this.logger.warn(
         `Webhook ohne ermittelbare Dokument-ID: ${JSON.stringify(payload)}`,
       );
+      await this.recordWebhookCall({
+        documentId: null,
+        action: payload.action,
+        status: 'bad-request',
+      });
       throw new BadRequestException(
         'Keine Dokument-ID aus doc_url/document_id ermittelbar',
       );
@@ -45,10 +61,14 @@ export class WebhookController {
     try {
       const result =
         await this.paperlessProcessor.processDocumentById(documentId);
-      return {
-        status: result.processed ? 'processed' : 'skipped',
+      const status = result.processed ? 'processed' : 'skipped';
+      await this.recordWebhookCall({
+        documentId,
+        action: payload.action,
+        status,
         reason: result.reason,
-      };
+      });
+      return { status, reason: result.reason };
     } catch (err) {
       // Fehler tolerieren (wie der bisherige Cron) und 200 zurückgeben,
       // damit Paperless keine Retry-Schleife startet.
@@ -56,10 +76,35 @@ export class WebhookController {
       this.logger.error(
         `Fehler bei Webhook-Verarbeitung von Dokument ${documentId}: ${message}`,
       );
+      await this.recordWebhookCall({
+        documentId,
+        action: payload.action,
+        status: 'error',
+        message,
+      });
       return { status: 'error', message };
     }
   }
 
+  /**
+   * Liefert Informationen zum letzten Webhook-Aufruf (Zeitpunkt, Dokument,
+   * Ergebnis). Über die globalen Guards per JWT oder API-Key zugänglich.
+   */
+  @Get('status')
+  async getWebhookStatus(): Promise<{ lastCall: unknown }> {
+    const setting = await this.settingRepo.findOneBy({
+      Tag: LAST_WEBHOOK_CALL_TAG,
+    });
+    if (!setting?.Wert) {
+      return { lastCall: null };
+    }
+    try {
+      return { lastCall: JSON.parse(setting.Wert) };
+    } catch {
+      return { lastCall: { raw: setting.Wert } };
+    }
+  }
+
   /**
    * Ermittelt die Dokument-ID aus dem Webhook-Payload. Bevorzugt wird das
    * optionale Feld `document_id` (für manuelles Testen), andernfalls wird die
@@ -79,4 +124,47 @@ export class WebhookController {
     }
     return null;
   }
+
+  /**
+   * Hält den letzten Webhook-Aufruf in der Settings-Tabelle fest
+   * (Tag "last_webhook_call"). Fehler beim Speichern werden nur geloggt und
+   * beeinflussen die Webhook-Antwort nicht.
+   */
+  private async recordWebhookCall(info: {
+    documentId: number | null;
+    action?: string;
+    status: string;
+    reason?: string;
+    message?: string;
+  }): Promise<void> {
+    try {
+      const value = JSON.stringify({
+        at: new Date().toISOString(),
+        documentId: info.documentId,
+        action: info.action ?? null,
+        status: info.status,
+        ...(info.reason ? { reason: info.reason } : {}),
+        ...(info.message ? { message: info.message.slice(0, 100) } : {}),
+      });
+
+      let setting = await this.settingRepo.findOneBy({
+        Tag: LAST_WEBHOOK_CALL_TAG,
+      });
+      if (!setting) {
+        setting = this.settingRepo.create({
+          Typ: 0,
+          Tag: LAST_WEBHOOK_CALL_TAG,
+          Wert: value,
+        });
+      } else {
+        setting.Wert = value;
+      }
+      await this.settingRepo.save(setting);
+    } catch (err) {
+      this.logger.error(
+        'Konnte letzten Webhook-Aufruf nicht in den Settings speichern',
+        err instanceof Error ? err.stack : String(err),
+      );
+    }
+  }
 }

paperless-backend/src/webhook/webhook.module.ts

@@ -1,10 +1,12 @@
 import { Module } from '@nestjs/common';
+import { TypeOrmModule } from '@nestjs/typeorm';
 import { WebhookController } from './webhook.controller';
 import { PaperlessModule } from '../paperless/paperless.module';
 import { AuthModule } from '../auth/auth.module';
+import { Setting } from '../database/entities/setting.entity';
 
 @Module({
-  imports: [PaperlessModule, AuthModule],
+  imports: [TypeOrmModule.forFeature([Setting]), PaperlessModule, AuthModule],
   controllers: [WebhookController],
 })
 export class WebhookModule {}