upstream-rocketchat/apps/meteor/server/lib/oauth/allowPassportOAuthMiddleware.ts

import { capitalize } from '@rocket.chat/tools';
import type { NextFunction, Request, Response } from 'express';

import { settings } from '../../settings';

export const allowPassportOAuthMiddleware =
	(service: string, isCustomOAuth: boolean = false) =>
	(_req: Request, _res: Response, next: NextFunction) => {
		const isPassportFlowEnabled = settings.get<boolean>('Accounts_OAuth_Use_Modern_Flow');
		const settingPrefix = `${isCustomOAuth ? 'Accounts_OAuth_Custom-' : 'Accounts_OAuth_'}`;
		const isOAuthServiceEnabled = settings.get<boolean>(
			`${settingPrefix}${service === 'github_enterprise' ? 'GitHub_Enterprise' : capitalize(service)}`,
		);

		if (!isPassportFlowEnabled || !isOAuthServiceEnabled) {
			next('router');
		} else {
			next();
		}
	};