feat: Support feature flag evaluation server side (#5511)

* feat(editor): roll out schema view

* feat(editor): add posthog tracking

* refactor: use composables

* refactor: clean up console log

* refactor: clean up impl

* chore: clean up impl

* fix: fix demo var

* chore: add comment

* refactor: clean up

* chore: wrap error func

* refactor: clean up import

* refactor: make store

* feat: enable rudderstack usebeacon, move event to unload

* chore: clean up alert

* refactor: move tracking from hooks

* fix: reload flags on login

* fix: add func to setup

* fix: clear duplicate import

* chore: add console to tesT

* chore: add console to tesT

* fix: try reload

* chore: randomize instnace id for testing

* chore: randomize instnace id for testing

* chore: add console logs for testing

* chore: move random id to fe

* chore: use query param for testing

* feat: update PostHog api endpoint

* feat: update rs host

* feat: update rs host

* feat: update rs endpoints

* refactor: use api host for BE events as well

* refactor: refactor out posthog client

* feat: add feature flags to login

* feat: add feature flags to login

* feat: get feature flags to work

* feat: add created at to be events

* chore: add todos

* chore: clean up store

* chore: add created at to identify

* feat: add posthog config to settings

* feat: add bootstrapping

* chore: clean up

* chore: fix build

* fix: get dates to work

* fix: get posthog to recognize dates

* chore: refactor

* fix: update back to number

* fix: update key

* fix: get experiment evals to work

* feat: add posthog to signup router

* feat: add feature flags on sign up

* chore: clean up

* fix: fix import

* chore: clean up loading script

* feat: add timeout, fix: script loader

* fix: test timeout and get working on 8080

* refactor: move out posthog

* feat: add experiment tracking

* fix: clear tracked on reset

* fix: fix signup bug

* fix: handle errors when telmetry is disabled

* refactor: remove redundant await

* fix: add back posthog to telemetry

* test: fix test

* test: fix test

* test: add tests for posthog client

* lint: fix

* fix: fix issue with slow decide endpoint

* lint: fix

* lint: fix

* lint: fix

* lint: fix

* chore: address PR feedback

* chore: address PR feedback

* feat: add onboarding experiment

packages/cli/src/controllers/auth.controller.ts

@@ -1,7 +1,7 @@
 import validator from 'validator';
 import { Get, Post, RestController } from '@/decorators';
 import { AuthError, BadRequestError, InternalServerError } from '@/ResponseHelper';
-import { sanitizeUser } from '@/UserManagement/UserManagementHelper';
+import { sanitizeUser, withFeatureFlags } from '@/UserManagement/UserManagementHelper';
 import { issueCookie, resolveJwt } from '@/auth/jwt';
 import { AUTH_COOKIE_NAME } from '@/constants';
 import { Request, Response } from 'express';
@@ -11,8 +11,14 @@ import { LoginRequest, UserRequest } from '@/requests';
 import type { Repository } from 'typeorm';
 import { In } from 'typeorm';
 import type { Config } from '@/config';
-import type { PublicUser, IDatabaseCollections, IInternalHooksClass } from '@/Interfaces';
+import type {
+	PublicUser,
+	IDatabaseCollections,
+	IInternalHooksClass,
+	CurrentUser,
+} from '@/Interfaces';
 import { handleEmailLogin, handleLdapLogin } from '@/auth';
+import type { PostHogClient } from '@/posthog';
 
 @RestController()
 export class AuthController {
@@ -24,21 +30,26 @@ export class AuthController {
 
 	private readonly userRepository: Repository<User>;
 
+	private readonly postHog?: PostHogClient;
+
 	constructor({
 		config,
 		logger,
 		internalHooks,
 		repositories,
+		postHog,
 	}: {
 		config: Config;
 		logger: ILogger;
 		internalHooks: IInternalHooksClass;
 		repositories: Pick<IDatabaseCollections, 'User'>;
+		postHog?: PostHogClient;
 	}) {
 		this.config = config;
 		this.logger = logger;
 		this.internalHooks = internalHooks;
 		this.userRepository = repositories.User;
+		this.postHog = postHog;
 	}
 
 	/**
@@ -56,7 +67,7 @@ export class AuthController {
 
 		if (user) {
 			await issueCookie(res, user);
-			return sanitizeUser(user);
+			return withFeatureFlags(this.postHog, sanitizeUser(user));
 		}
 
 		throw new AuthError('Wrong username or password. Do you have caps lock on?');
@@ -66,7 +77,7 @@ export class AuthController {
 	 * Manually check the `n8n-auth` cookie.
 	 */
 	@Get('/login')
-	async currentUser(req: Request, res: Response): Promise<PublicUser> {
+	async currentUser(req: Request, res: Response): Promise<CurrentUser> {
 		// Manually check the existing cookie.
 		// eslint-disable-next-line @typescript-eslint/no-unsafe-member-access
 		const cookieContents = req.cookies?.[AUTH_COOKIE_NAME] as string | undefined;
@@ -76,7 +87,7 @@ export class AuthController {
 			// If logged in, return user
 			try {
 				user = await resolveJwt(cookieContents);
-				return sanitizeUser(user);
+				return await withFeatureFlags(this.postHog, sanitizeUser(user));
 			} catch (error) {
 				res.clearCookie(AUTH_COOKIE_NAME);
 			}
@@ -102,7 +113,7 @@ export class AuthController {
 		}
 
 		await issueCookie(res, user);
-		return sanitizeUser(user);
+		return withFeatureFlags(this.postHog, sanitizeUser(user));
 	}
 
 	/**