Datei Upload und Download fix

backend/routes/knowledge.js

@@ -12,6 +12,7 @@ const multer = require('multer');
 const { getDb } = require('../database');
 const logger = require('../utils/logger');
 const { validators, stripHtml } = require('../middleware/validation');
+const notificationService = require('../services/notificationService');
 
 // Upload-Konfiguration für Knowledge-Anhänge
 const UPLOAD_DIR = path.join(__dirname, '..', 'uploads', 'knowledge');
@@ -498,6 +499,53 @@ router.post('/entries', (req, res) => {
 
     logger.info(`Knowledge-Eintrag erstellt: ${title}`);
 
+    // Benachrichtigung an alle Nutzer senden
+    const io = req.app.get('io');
+    if (io) {
+      // Alle Nutzer abrufen (außer dem Ersteller)
+      const users = db.prepare(`
+        SELECT id FROM users 
+        WHERE id != ?
+      `).all(req.user.id);
+
+      // Benachrichtigung für jeden Nutzer erstellen
+      users.forEach(user => {
+        notificationService.create(
+          user.id,
+          'knowledge:new_entry',
+          {
+            entryId: entry.id,
+            entryTitle: entry.title,
+            categoryName: category.name,
+            categoryId: category.id,
+            projectId: null,
+            actorId: req.user.id
+          },
+          io,
+          false // nicht persistent
+        );
+      });
+
+      // Socket.io Event für Echtzeit-Update senden
+      io.emit('knowledge:created', {
+        entry: {
+          id: entry.id,
+          categoryId: entry.category_id,
+          categoryName: category.name,
+          categoryColor: category.color,
+          title: entry.title,
+          url: entry.url,
+          notes: entry.notes,
+          position: entry.position,
+          attachmentCount: 0,
+          createdBy: entry.created_by,
+          creatorName: req.user.display_name,
+          createdAt: entry.created_at,
+          updatedAt: entry.updated_at
+        }
+      });
+    }
+
     res.status(201).json({
       id: entry.id,
       categoryId: entry.category_id,

backend/services/notificationService.js

@@ -58,6 +58,10 @@ const NOTIFICATION_TYPES = {
   'approval:rejected': {
     title: (data) => 'Genehmigung abgelehnt',
     message: (data) => `"${data.proposalTitle}" wurde abgelehnt`
+  },
+  'knowledge:new_entry': {
+    title: (data) => 'Neuer Wissenseintrag',
+    message: (data) => `Neuer Eintrag: "${data.entryTitle}" in ${data.categoryName}`
   }
 };
 
@@ -84,8 +88,8 @@ const notificationService = {
       const message = typeConfig.message(data);
 
       const result = db.prepare(`
-        INSERT INTO notifications (user_id, type, title, message, task_id, project_id, proposal_id, actor_id, is_persistent)
-        VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)
+        INSERT INTO notifications (user_id, type, title, message, task_id, project_id, proposal_id, actor_id, is_persistent, data)
+        VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
       `).run(
         userId,
         type,
@@ -95,7 +99,8 @@ const notificationService = {
         data.projectId || null,
         data.proposalId || null,
         data.actorId || null,
-        persistent ? 1 : 0
+        persistent ? 1 : 0,
+        JSON.stringify(data) // Zusätzliche Daten als JSON speichern
       );
 
       const notification = db.prepare(`
@@ -260,6 +265,16 @@ const notificationService = {
    * Benachrichtigung formatieren für Frontend
    */
   formatNotification(notification) {
+    // Parse zusätzliche Daten wenn vorhanden
+    let additionalData = {};
+    if (notification.data) {
+      try {
+        additionalData = JSON.parse(notification.data);
+      } catch (e) {
+        // Ignore parse errors
+      }
+    }
+
     return {
       id: notification.id,
       userId: notification.user_id,
@@ -274,7 +289,10 @@ const notificationService = {
       actorColor: notification.actor_color,
       isRead: notification.is_read === 1,
       isPersistent: notification.is_persistent === 1,
-      createdAt: notification.created_at
+      createdAt: notification.created_at,
+      // Zusätzliche Daten für Knowledge-Einträge
+      entryId: additionalData.entryId || null,
+      categoryId: additionalData.categoryId || null
     };
   },