diff --git a/src/api/middlewares/TestClient.ts b/src/api/middlewares/TestClient.ts
new file mode 100644
index 00000000..0bd63eb5
--- /dev/null
+++ b/src/api/middlewares/TestClient.ts
@@ -0,0 +1,107 @@
+import express, { Request, Response, Application } from "express";
+import fs from "fs";
+import path from "path";
+import fetch, { Response as FetchResponse } from "node-fetch";
+import ProxyAgent from 'proxy-agent';
+import { Config } from "@fosscord/util";
+
+export default function TestClient(app: Application) {
+ const agent = new ProxyAgent();
+ const assetCache = new Map<string, { response: FetchResponse; buffer: Buffer; }>();
+ const indexHTML = fs.readFileSync(path.join(__dirname, "..", "..", "..", "assets", "client_test", "index.html"), { encoding: "utf8" });
+
+ var html = indexHTML;
+ const CDN_ENDPOINT = (Config.get().cdn.endpointClient || Config.get()?.cdn.endpointPublic || process.env.CDN || "").replace(
+ /(https?)?(:\/\/?)/g,
+ ""
+ );
+ const GATEWAY_ENDPOINT = Config.get().gateway.endpointClient || Config.get()?.gateway.endpointPublic || process.env.GATEWAY || "";
+
+ if (CDN_ENDPOINT) {
+ html = html.replace(/CDN_HOST: .+/, `CDN_HOST: \`${CDN_ENDPOINT}\`,`);
+ }
+ if (GATEWAY_ENDPOINT) {
+ html = html.replace(/GATEWAY_ENDPOINT: .+/, `GATEWAY_ENDPOINT: \`${GATEWAY_ENDPOINT}\`,`);
+ }
+ // inline plugins
+ var files = fs.readdirSync(path.join(__dirname, "..", "..", "..", "assets", "preload-plugins"));
+ var plugins = "";
+ files.forEach(x => { if (x.endsWith(".js")) plugins += `<script>${fs.readFileSync(path.join(__dirname, "..", "..", "..", "assets", "preload-plugins", x))}</script>\n`; });
+ html = html.replaceAll("<!-- preload plugin marker -->", plugins);
+
+ // plugins
+ files = fs.readdirSync(path.join(__dirname, "..", "..", "..", "assets", "plugins"));
+ plugins = "";
+ files.forEach(x => { if (x.endsWith(".js")) plugins += `<script src='/assets/plugins/${x}'></script>\n`; });
+ html = html.replaceAll("<!-- plugin marker -->", plugins);
+ //preload plugins
+ files = fs.readdirSync(path.join(__dirname, "..", "..", "..", "assets", "preload-plugins"));
+ plugins = "";
+ files.forEach(x => { if (x.endsWith(".js")) plugins += `<script>${fs.readFileSync(path.join(__dirname, "..", "..", "..", "assets", "preload-plugins", x))}</script>\n`; });
+ html = html.replaceAll("<!-- preload plugin marker -->", plugins);
+
+
+ app.use("/assets", express.static(path.join(__dirname, "..", "..", "assets")));
+
+ app.get("/assets/:file", async (req: Request, res: Response) => {
+ delete req.headers.host;
+ var response: FetchResponse;
+ var buffer: Buffer;
+ const cache = assetCache.get(req.params.file);
+ if (!cache) {
+ response = await fetch(`https://discord.com/assets/${req.params.file}`, {
+ agent,
+ // @ts-ignore
+ headers: {
+ ...req.headers
+ }
+ });
+ buffer = await response.buffer();
+ } else {
+ response = cache.response;
+ buffer = cache.buffer;
+ }
+
+ response.headers.forEach((value, name) => {
+ if (
+ [
+ "content-length",
+ "content-security-policy",
+ "strict-transport-security",
+ "set-cookie",
+ "transfer-encoding",
+ "expect-ct",
+ "access-control-allow-origin",
+ "content-encoding"
+ ].includes(name.toLowerCase())
+ ) {
+ return;
+ }
+ res.set(name, value);
+ });
+ assetCache.set(req.params.file, { buffer, response });
+
+ return res.send(buffer);
+ });
+ app.get("/developers*", (req: Request, res: Response) => {
+ const { useTestClient } = Config.get().client;
+ res.set("Cache-Control", "public, max-age=" + 60 * 60 * 24);
+ res.set("content-type", "text/html");
+
+ if (!useTestClient) return res.send("Test client is disabled on this instance. Use a stand-alone client to connect this instance.");
+
+ res.send(fs.readFileSync(path.join(__dirname, "..", "..", "client_test", "developers.html"), { encoding: "utf8" }));
+ });
+ app.get("*", (req: Request, res: Response) => {
+ const { useTestClient } = Config.get().client;
+ res.set("Cache-Control", "public, max-age=" + 60 * 60 * 24);
+ res.set("content-type", "text/html");
+
+ if (req.url.startsWith("/api") || req.url.startsWith("/__development")) return;
+
+ if (!useTestClient) return res.send("Test client is disabled on this instance. Use a stand-alone client to connect this instance.");
+ if (req.url.startsWith("/invite")) return res.send(html.replace("9b2b7f0632acd0c5e781", "9f24f709a3de09b67c49"));
+
+ res.send(html);
+ });
+}
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