fix(router): NIP-11 being served only on root instead of relay path (#399)

* fix(router): map NIP-11 to all WebSocket endpoints with flexible Accept matching

* fix: use proper http content negotiation for nip-11 accept headers

* fix: sort imports alphabetically in routes/index.ts

---------

Co-authored-by: Ricardo Cabral <me@ricardocabral.io>

Author: sagar-h007

src/handlers/request-handlers/root-request-handler.ts

@@ -1,4 +1,5 @@
 import { NextFunction, Request, Response } from 'express'
+import accepts from 'accepts'
 import { path } from 'ramda'
 
 import { createSettings } from '../../factories/settings-factory'
@@ -9,7 +10,7 @@ import packageJson from '../../../package.json'
 export const rootRequestHandler = (request: Request, response: Response, next: NextFunction) => {
   const settings = createSettings()
 
-  if (request.header('accept') === 'application/nostr+json') {
+  if (accepts(request).type(['application/nostr+json'])) {
     const {
       info: { name, description, pubkey: rawPubkey, contact, relay_url },
     } = settings

src/routes/index.ts

@@ -1,3 +1,4 @@
+import accepts from 'accepts'
 import express from 'express'
 
 import { nodeinfo21Handler, nodeinfoHandler } from '../handlers/request-handlers/nodeinfo-handler'
@@ -11,6 +12,13 @@ import { rootRequestHandler } from '../handlers/request-handlers/root-request-ha
 
 const router = express.Router()
 
+router.use((req, res, next) => {
+  if (req.method === 'GET' && accepts(req).type(['application/nostr+json'])) {
+    return rootRequestHandler(req, res, next)
+  }
+  next()
+})
+
 router.get('/', rootRequestHandler)
 router.get('/healthz', getHealthRequestHandler)
 router.get('/terms', getTermsRequestHandler)