rocket.chat.mqtt/lib/userpresence/publish.js

It's a MQTT Server, using redis to scale horizontally.

'use strict';

var _rocketChat = require('rocket.chat.proto');

var _publish = require('../Routes/publish');

var _publish2 = _interopRequireDefault(_publish);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _objectWithoutProperties(obj, keys) { var target = {}; for (var i in obj) { if (keys.indexOf(i) >= 0) continue; if (!Object.prototype.hasOwnProperty.call(obj, i)) continue; target[i] = obj[i]; } return target; }

const decodeUserpresence = (0, _rocketChat.decoder)('userpresence');
const encodeUserpresence = (0, _rocketChat.encoder)('userpresence');

const statusAllowed = [0, 1, 2];

_publish2.default.add('userpresence', ({ user }, packet) => {
	if (!user || !user._id) {
		return false;
	}

	const _decodeUserpresence = decodeUserpresence(packet.payload),
	      { status } = _decodeUserpresence,
	      args = _objectWithoutProperties(_decodeUserpresence, ['status']);

	if (!statusAllowed.includes(status) || Object.keys(args).length) {
		return false;
	}

	packet.qos = 0;
	packet.retain = true;

	packet.payload = encodeUserpresence({ status });

	packet.topic = `userpresence/${user._id}`;

	return true;
});