chore: convert CAS integration code to typescript (RocketChat#31492)

apps/meteor/server/configuration/cas.ts

@@ -0,0 +1,35 @@
+import type { Awaited } from '@rocket.chat/core-typings';
+import debounce from 'lodash.debounce';
+import { RoutePolicy } from 'meteor/routepolicy';
+import { WebApp } from 'meteor/webapp';
+
+import { settings } from '../../app/settings/server/cached';
+import { loginHandlerCAS } from '../lib/cas/loginHandler';
+import { middlewareCAS } from '../lib/cas/middleware';
+import { updateCasServices } from '../lib/cas/updateCasService';
+
+const _updateCasServices = debounce(updateCasServices, 2000);
+
+settings.watchByRegex(/^CAS_.+/, async () => {
+	await _updateCasServices();
+});
+
+RoutePolicy.declare('/_cas/', 'network');
+
+// Listen to incoming OAuth http requests
+WebApp.connectHandlers.use((req, res, next) => {
+	middlewareCAS(req, res, next);
+});
+
+/*
+ * Register a server-side login handler.
+ * It is called after Accounts.callLoginMethod() is called from client.
+ *
+ */
+Accounts.registerLoginHandler('cas', (options) => {
+	const promise = loginHandlerCAS(options);
+
+	// Pretend the promise has been awaited so the types will match -
+	// #TODO: Fix registerLoginHandler's type definitions (it accepts promises)
+	return promise as unknown as Awaited<typeof promise>;
+});

apps/meteor/server/importPackages.ts

@@ -6,7 +6,6 @@ import '../app/assets/server';
 import '../app/authorization/server';
 import '../app/autotranslate/server';
 import '../app/bot-helpers/server';
-import '../app/cas/server';
 import '../app/channel-settings/server';
 import '../app/cloud/server';
 import '../app/crowd/server';