Improved authentication; added fallbacks to 3D; cleaner dashboard charts

frontend/app/api/auth/logout/route.ts

@@ -0,0 +1,53 @@
+import { getServerSession } from 'next-auth'
+import { authOptions } from '@/lib/auth'
+import { NextRequest } from 'next/server'
+import { getToken } from 'next-auth/jwt'
+
+export async function POST(req: NextRequest) {
+  try {
+    const session = await getServerSession(authOptions)
+    const secret = process.env.NEXTAUTH_SECRET
+    const token = await getToken({ req, secret }).catch(() => null)
+
+    const accessToken = (session as any)?.accessToken || (token as any)?.accessToken
+    const refreshToken = (session as any)?.refreshToken || (token as any)?.refreshToken
+
+    const backendUrl = process.env.BACKEND_URL
+    if (!backendUrl) {
+      return new Response(JSON.stringify({ success: false, error: 'BACKEND_URL is not configured' }), {
+        status: 500,
+        headers: { 'Content-Type': 'application/json' },
+      })
+    }
+
+    if (!refreshToken && !accessToken) {
+      return new Response(JSON.stringify({ success: false, error: 'Unauthorized' }), {
+        status: 401,
+        headers: { 'Content-Type': 'application/json' },
+      })
+    }
+
+    const payload = refreshToken ? { refresh: refreshToken } : {}
+    const headers: Record<string, string> = { 'Content-Type': 'application/json' }
+    if (accessToken) headers['Authorization'] = `Bearer ${accessToken}`
+
+    const res = await fetch(`${backendUrl}/auth/logout/`, {
+      method: 'POST',
+      headers,
+      body: JSON.stringify(payload),
+    })
+
+    const text = await res.text().catch(() => '')
+    const contentType = res.headers.get('Content-Type') || 'application/json'
+    return new Response(text || JSON.stringify({ success: res.ok }), {
+      status: res.status,
+      headers: { 'Content-Type': contentType },
+    })
+  } catch (error) {
+    console.error('Error in logout route:', error)
+    return new Response(JSON.stringify({ success: false, error: 'Failed to logout' }), {
+      status: 500,
+      headers: { 'Content-Type': 'application/json' },
+    })
+  }
+}