Datei Upload und Download fix

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
     };
   },