Code refactoring:

Splitting API code in several files.

server/lib/routers/api/federation-server-infos.ts

@@ -0,0 +1,25 @@
+import type { RegisterServerOptions } from '@peertube/peertube-types'
+import type { Router, Request, Response, NextFunction } from 'express'
+import { asyncMiddleware } from '../../middlewares/async'
+import { serverBuildInfos } from '../../federation/outgoing'
+
+/**
+ * Instanciate the authentication API.
+ * This API is used by the frontend to get current user's XMPP credentials.
+ * @param options server register options
+ */
+async function initFederationServerInfosApiRouter (options: RegisterServerOptions, router: Router): Promise<void> {
+  const logger = options.peertubeHelpers.logger
+
+  router.get('/federation_server_infos', asyncMiddleware(
+    async (req: Request, res: Response, _next: NextFunction) => {
+      logger.info('federation_server_infos api call')
+      const result = await serverBuildInfos(options)
+      res.json(result)
+    }
+  ))
+}
+
+export {
+  initFederationServerInfosApiRouter
+}