Function handler

main.ts:58–122

(request: Request)

}

async function handler(request: Request) {
  const contentLength = request.headers.get('content-length');
  const path = new URL(request.url).pathname;

  const isUploadRequest = path.startsWith('/api/files/upload') || path.startsWith('/dav');
  const maxSizeInBytes = isUploadRequest ? MAX_UPLOAD_SIZE_IN_BYTES : MAX_REQUEST_SIZE_IN_BYTES;

  if (contentLength && parseInt(contentLength, 10) > maxSizeInBytes) {
    return new Response('Payload too large', { status: 413 });
  }

  const origin = request.headers.get('Origin') || '*';

  // CORS headers for non-DAV routes
  if (
    request.method == 'OPTIONS' && path !== '/dav' && !path.startsWith('/dav/') && path !== '/carddav' &&
    !path.startsWith('/carddav/') && path !== '/caldav' && !path.startsWith('/caldav/')
  ) {
    const response = new Response(null, {
      status: 204,
    });
    const headers = response.headers;
    headers.set('Access-Control-Allow-Origin', origin);
    headers.set('Access-Control-Allow-Credentials', 'true');
    headers.set('Access-Control-Allow-Methods', 'POST, OPTIONS, GET, PUT, DELETE');
    headers.set(
      'Access-Control-Allow-Headers',
      'Content-Type, Content-Length, Accept-Encoding, X-CSRF-Token, Authorization, accept, origin, Cache-Control, X-Requested-With',
    );
    return response;
  }

  const routeKeys = Object.keys(routes);

  for (const routeKey of routeKeys) {
    const route: Route = routes[routeKey];
    const match = route.pattern.exec(request.url);

    if (match) {
      const response = await route.handler(request, match);

      applyCorsHeadersToResponse(origin, response);
      handleLogging(request, response);

      return response;
    }
  }

  const notFoundPage: Page = (await import(`/pages/404.ts`)).default;

  const notFoundResponse = await notFoundPage.get!({
    request,
    match: new URLPattern({ pathname: '/' }).exec(request.url) as URLPatternResult,
    isRunningLocally: false,
  });

  const response = new Response(notFoundResponse.body, {
    status: 404,