yoginth.com
Hey is a decentralized and permissionless social media app built with Lens Protocol 馃尶
1export interface Context {
2 request: Request;
3 next: () => Promise<Response>;
4}
5
6export const onRequest = async (context: Context) => {
7 const { request } = context;
8 const userAgent = request.headers.get("user-agent")?.toLowerCase() || "";
9 const url = new URL(request.url);
10 const path = url.pathname;
11
12 const isBot =
13 /bot|baidu|iframely|whatsapp|babbar|bytedance|facebook|meta/.test(
14 userAgent
15 );
16
17 const createNoCacheResponse = async (targetUrl: string) => {
18 const upstreamResponse = await fetch(targetUrl, {
19 body: ["GET", "HEAD"].includes(request.method) ? undefined : request.body,
20 headers: request.headers,
21 method: request.method,
22 redirect: "follow"
23 });
24
25 const newHeaders = new Headers(upstreamResponse.headers);
26 newHeaders.set("Cache-Control", "no-store, no-cache, must-revalidate");
27
28 return new Response(upstreamResponse.body, {
29 headers: newHeaders,
30 status: upstreamResponse.status,
31 statusText: upstreamResponse.statusText
32 });
33 };
34
35 if (
36 isBot &&
37 (path.startsWith("/u/") ||
38 path.startsWith("/posts/") ||
39 path.startsWith("/g/"))
40 ) {
41 const targetUrl = `https://api.hey.xyz/og${path}`;
42 return createNoCacheResponse(targetUrl);
43 }
44
45 return context.next();
46};