create open api endpoint

Author: ggazzo

apps/meteor/app/api/server/index.ts

@@ -48,5 +48,6 @@ import './v1/voip/omnichannel';
 import './v1/voip';
 import './v1/federation';
 import './v1/moderation';
+import './openApi';
 
 export { API, APIClass, defaultRateLimiterOptions } from './api';

apps/meteor/app/api/server/openApi.ts

@@ -0,0 +1,45 @@
+import { API } from './api';
+import { settings } from '../../settings/server';
+import { Info } from '../../utils/rocketchat.info';
+
+const openApi = new API.ApiClass({
+	version: 'json',
+	useDefaultAuth: false,
+	prettyJson: false,
+	enableCors: false,
+	auth: API.getUserAuth(),
+});
+
+openApi.addRoute('/', {
+	get() {
+		return {
+			openapi: '3.0.3',
+			info: {
+				title: 'Rocket.Chat API',
+				description: 'Rocket.Chat API',
+				version: Info.version,
+			},
+			servers: [
+				{
+					url: settings.get('Site_Url'),
+				},
+			],
+			components: {
+				securitySchemes: {
+					userId: {
+						type: 'apiKey',
+						in: 'header',
+						name: 'X-User-Id',
+					},
+					authToken: {
+						type: 'apiKey',
+						in: 'header',
+						name: 'X-Auth-Token',
+					},
+				},
+				schemas: {},
+			},
+			paths: API.v1.typedRoutes,
+		};
+	},
+});