@homenet/plugin-mqtt/lib/loader.js

Homenet plugin for buttons and sensors emitted over MQTT

"use strict";
var __decorate = (this && this.__decorate) || function (decorators, target, key, desc) {
    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
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    return c > 3 && r && Object.defineProperty(target, key, r), r;
};
var __metadata = (this && this.__metadata) || function (k, v) {
    if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
var __param = (this && this.__param) || function (paramIndex, decorator) {
    return function (target, key) { decorator(target, key, paramIndex); }
};
Object.defineProperty(exports, "__esModule", { value: true });
const button_1 = require("./button");
const sensor_1 = require("./sensor");
const mqtt = require("mqtt");
function create(annotate) {
    let MqttPluginLoader = class MqttPluginLoader {
        constructor(buttons, sensors, config, logger) {
            this._buttons = {};
            this._subscriptions = {};
            this._mqttConnected = false;
            this._logger = logger;
            this._config = config;
            this._init();
            buttons.addType('mqtt', this._createButtonFactory());
            sensors.addType('mqtt-trigger', this._createSensorsFactory('trigger'));
            sensors.addType('mqtt-value', this._createSensorsFactory('value'));
        }
        load() {
        }
        _init() {
            this._logger.info('Starting MQTT plugin');
            const mqttConfig = this._config.mqtt || {};
            const host = mqttConfig.host || 'localhost';
            const mqttUri = 'mqtt://' + host;
            this._logger.info('Connecting to broker ' + mqttUri);
            const mqttClient = mqtt.connect(mqttUri);
            this._mqttConnected = false;
            mqttClient.on('connect', () => {
                this._logger.info('MQTT connected');
                this._mqttConnected = true;
                this._onConnected();
            });
            mqttClient.on('close', () => {
                this._logger.info('MQTT closed');
                this._mqttConnected = false;
            });
            mqttClient.on('offline', () => {
                this._logger.info('MQTT offline');
                this._mqttConnected = false;
            });
            this._mqttClient = mqttClient;
            mqttClient.on('message', (topic, message) => {
                const msgObj = tryParse(message.toString());
                const handler = this._subscriptions[topic];
                if (handler)
                    handler(msgObj);
            });
        }
        _onConnected() {
            this._bindExistingSubscriptions();
        }
        _addSubscription(topic, callback) {
            this._subscriptions[topic] = callback;
            if (!this._mqttConnected)
                return;
            this._subscribe(topic);
        }
        _subscribe(topic) {
            this._mqttClient.subscribe(topic);
        }
        _bindExistingSubscriptions() {
            for (const topic in this._subscriptions) {
                this._subscribe(topic);
            }
        }
        _createButtonFactory() {
            return (id, opts) => {
                this._logger.info(`Adding MQTT button: ${id}`);
                const button = new button_1.MqttButton();
                this._buttons[id] = button;
                const baseTopic = `homenet/button/${id}/input`;
                this._addSubscription(`${baseTopic}/click`, (e) => {
                    button.emit('click', e);
                });
                this._addSubscription(`${baseTopic}/dblclick`, (e) => {
                    button.emit('dblclick', e);
                });
                this._addSubscription(`${baseTopic}/hold`, (e) => {
                    button.emit('hold', e);
                });
                return button;
            };
        }
        _createSensorsFactory(type) {
            return (id, opts) => {
                const sensor = new sensor_1.MqttSensor(id, opts);
                const baseTopic = `homenet/sensor/${id}/input`;
                if (!type || type === 'trigger') {
                    this._addSubscription(`${baseTopic}/trigger`, (e) => {
                        sensor.emit('trigger');
                    });
                    sensor.isTrigger = true;
                    sensor.isToggle = false;
                    sensor.isValue = false;
                }
                else if (type && type === 'value') {
                    this._addSubscription(`${baseTopic}/value`, (e) => {
                        Object.keys(e).forEach(key => {
                            sensor.emit('value', key, e[key]);
                        });
                    });
                    sensor.isTrigger = false;
                    sensor.isToggle = false;
                    sensor.isValue = true;
                }
                return sensor;
            };
        }
    };
    MqttPluginLoader = __decorate([
        annotate.plugin(),
        __param(0, annotate.service('IButtonManager')),
        __param(1, annotate.service('ISensorManager')),
        __param(2, annotate.service('IConfig')),
        __param(3, annotate.service('ILogger')),
        __metadata("design:paramtypes", [Object, Object, Object, Object])
    ], MqttPluginLoader);
    return { MqttPluginLoader };
}
exports.create = create;
function tryParse(str) {
    try {
        return JSON.parse(str);
    }
    catch (err) {
        return str;
    }
}
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