My-Weekly-ToDo-List/src/middleware.ts

import { NextRequest, NextResponse } from 'next/server';
import { getToken } from 'next-auth/jwt';

export async function middleware(request: NextRequest) {
  // Skip middleware for public paths
  if (
    request.nextUrl.pathname.startsWith('/auth') ||
    request.nextUrl.pathname.startsWith('/api/auth') || // CRITICAL: Allow NextAuth API routes
    request.nextUrl.pathname.startsWith('/_next') ||
    request.nextUrl.pathname === '/favicon.ico' ||
    request.nextUrl.pathname === '/sw.js' ||
    request.nextUrl.pathname === '/manifest.webmanifest'
  ) {
    return NextResponse.next();
  }

  // Check if user is authenticated using NextAuth
  const token = await getToken({
    req: request,
    secret: process.env.NEXTAUTH_SECRET,
  });

  // Redirect to login if not authenticated
  if (!token && !request.nextUrl.pathname.startsWith('/auth')) {
    const url = request.nextUrl.clone();
    url.pathname = '/auth/login';
    url.searchParams.set('callbackUrl', request.nextUrl.pathname);
    return NextResponse.redirect(url);
  }

  return NextResponse.next();
}

export const config = {
  matcher: [
    /*
     * Match all request paths except:
     * - api/auth/* (NextAuth endpoints)
     * - _next/static (static files)
     * - _next/image (image optimization)
     * - favicon.ico
     */
    '/((?!_next/static|_next/image|favicon.ico).*)',
  ],
};