Update dependencies to include TinyMCE and Quill, enhance Navigation component with a new Newsletter submenu, and implement role-based access control for CMS features. Refactor user role handling to support multiple roles and improve user management functionality across various API endpoints.

server/api/newsletter/unsubscribe.get.js

@@ -0,0 +1,56 @@
+import { readSubscribers, writeSubscribers } from '../../utils/newsletter.js'
+
+export default defineEventHandler(async (event) => {
+  try {
+    const query = getQuery(event)
+    const token = query.token
+
+    if (!token) {
+      throw createError({
+        statusCode: 400,
+        statusMessage: 'Abmeldetoken fehlt'
+      })
+    }
+
+    const subscribers = await readSubscribers()
+    const subscriber = subscribers.find(s => s.unsubscribeToken === token)
+
+    if (!subscriber) {
+      throw createError({
+        statusCode: 404,
+        statusMessage: 'Ungültiger Abmeldetoken'
+      })
+    }
+
+    if (subscriber.unsubscribedAt) {
+      // Bereits abgemeldet
+      return sendRedirect(event, '/newsletter/unsubscribed?already=true')
+    }
+
+    // Abmeldung durchführen
+    subscriber.unsubscribedAt = new Date().toISOString()
+    subscriber.confirmed = false
+    
+    // Stelle sicher, dass groupIds existiert (für Rückwärtskompatibilität)
+    if (!subscriber.groupIds) {
+      subscriber.groupIds = []
+    }
+    // Leere groupIds, um von allen Gruppen abzumelden
+    subscriber.groupIds = []
+
+    await writeSubscribers(subscribers)
+
+    // Weiterleitung zur Abmelde-Bestätigungsseite
+    return sendRedirect(event, '/newsletter/unsubscribed')
+  } catch (error) {
+    console.error('Fehler bei Newsletter-Abmeldung:', error)
+    if (error.statusCode) {
+      throw error
+    }
+    throw createError({
+      statusCode: 500,
+      statusMessage: 'Fehler bei der Newsletter-Abmeldung'
+    })
+  }
+})
+