Allow chaining the delay endpoint & fix delay calc bug

Author: pimterry

src/endpoints/http-index.ts

@@ -7,6 +7,7 @@ export type HttpHandler = (
     options: {
         path: string;
         query: URLSearchParams;
+        handleRequest: (req: http.IncomingMessage, res: http.ServerResponse) => void;
     }
 ) => MaybePromise<void>;
 

src/endpoints/http/delay.ts

@@ -1,5 +1,5 @@
 import { delay } from '@httptoolkit/util';
-import { HttpHandler, HttpEndpoint } from '../http-index.js';
+import { HttpHandler } from '../http-index.js';
 import { buildHttpBinAnythingEndpoint } from '../../httpbin-compat.js';
 
 const matchPath = (path: string) => path.startsWith('/delay/');
@@ -8,17 +8,26 @@ const defaultAnythingEndpoint = buildHttpBinAnythingEndpoint({
     fieldFilter: ["url", "args", "form", "data", "origin", "headers", "files"]
 });
 
-const handle: HttpHandler = async (req, res, { path }) => {
-    const delayMs = parseFloat(path.slice('/delay/'.length));
+const handle: HttpHandler = async (req, res, { path, handleRequest }) => {
+    const followingSlashIndex = path.indexOf('/', '/delay/'.length);
+    const followingUrl = followingSlashIndex !== -1 ? path.slice(followingSlashIndex) : '';
+    const endOfDelay = followingSlashIndex === -1 ? path.length : followingSlashIndex;
+    const delayMs = parseFloat(path.slice('/delay/'.length, endOfDelay));
 
     if (isNaN(delayMs)) {
         res.writeHead(400);
         res.end('Invalid delay duration');
     }
 
-    await delay(Math.min(delayMs, 10 * 1000)); // 10s max
+    await delay(Math.min(delayMs, 10) * 1000); // 10s max
 
-    return defaultAnythingEndpoint(req, res);
+    if (followingUrl) {
+        req.url = followingUrl;
+        handleRequest(req, res);
+        return;
+    } else {
+        return defaultAnythingEndpoint(req, res);
+    }
 }
 
 export const delayEndpoint = {

src/http-handler.ts

@@ -75,7 +75,8 @@ export function createHttpHandler(options: {
             console.log(`Request to ${path} matched endpoint ${matchingEndpoint.name}`);
             await matchingEndpoint.handle(req, res, {
                 path,
-                query: url.searchParams
+                query: url.searchParams,
+                handleRequest
             });
         } else {
             console.log(`Request to ${path} matched no endpoints`);