Rocket.Chat/app/gitlab/server/startup.js

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

settings.addGroup('OAuth', function() {
	this.section('GitLab', function() {
		const enableQuery = {
			_id: 'Accounts_OAuth_Gitlab',
			value: true,
		};

		this.add('Accounts_OAuth_Gitlab', false, { type: 'boolean', public: true });
		this.add('API_Gitlab_URL', '', { type: 'string', enableQuery, public: true, secret: true });
		this.add('Accounts_OAuth_Gitlab_id', '', { type: 'string', enableQuery });
		this.add('Accounts_OAuth_Gitlab_secret', '', { type: 'string', enableQuery, secret: true });
		this.add('Accounts_OAuth_Gitlab_identity_path', '/api/v4/user', { type: 'string', public: true, enableQuery });
		this.add('Accounts_OAuth_Gitlab_merge_users', false, { type: 'boolean', public: true, enableQuery });
		this.add('Accounts_OAuth_Gitlab_callback_url', '_oauth/gitlab', { type: 'relativeUrl', readonly: true, force: true, enableQuery });
	});
});