Rocket.Chat/app/apps/server/bridges/activation.js

import { STATUS_MAP } from '../../../../imports/users-presence/server/activeUsers';
import { Users } from '../../../models/server';
import { Notifications } from '../../../notifications/server';

export class AppActivationBridge {
	constructor(orch) {
		this.orch = orch;
	}

	async appAdded(app) {
		await this.orch.getNotifier().appAdded(app.getID());
	}

	async appUpdated(app) {
		await this.orch.getNotifier().appUpdated(app.getID());
	}

	async appRemoved(app) {
		await this.orch.getNotifier().appRemoved(app.getID());
	}

	async appStatusChanged(app, status) {
		const user = Users.findOneByAppId(app.getID(), { fields: { username: 1 } });

		if (user) {
			const { _id, username } = user;
			const userStatus = ['auto_enabled', 'manually_enabled'].includes(status) ? 'online' : 'offline';

			Users.updateStatusById(_id, userStatus);
			Notifications.notifyLogged('user-status', [
				_id,
				username,
				STATUS_MAP[userStatus],
			]);
		}

		await this.orch.getNotifier().appStatusUpdated(app.getID(), status);
	}
}