node-red-contrib-lirc/lirc.js

Lirc node for node-red, allows to send date to the LIRC

/**
 * Created by aborovsky on 27.08.2015.
 */

var util = require('util');
var lircManager = require('./lib/lircmanager').LircManager;

module.exports = function(RED) {

    /**
     * ====== Lirc-controller ================
     * Holds configuration for lircjs,
     * initializes new lircjs connections
     * =======================================
     */
    function LIRCControllerNode(config) {
        var node = this;
        RED.nodes.createNode(this, config);
        node.name = config.name;
        node.devices = [];
        node.lirc = new lircManager();

        this._updateStatusDevices = function(){
            for (var key in node.devices){
                var dev = node.devices[key];
                if (dev.output == node.lirc.activeOutput && node.lirc.isReady){
                    dev.status({
                        fill: "green",
                        shape: "dot",
                        text: "active"
                    });
                } else if (node.lirc.isReady) {
                    dev.status({
                        fill: "yellow",
                        shape: "dot",
                        text: "inactive"
                    });
                } else {
                    dev.status({
                        fill: "red",
                        shape: "dot",
                        text: "not ready"
                    });
                }
            }
        };

        node.lirc.on('changeOutput', node._updateStatusDevices);
        node.lirc.on('ready', node._updateStatusDevices);
        node.lirc.on('notReady', node._updateStatusDevices);

        this.registerDevice = function(deviceNode){
            node.devices.push(deviceNode);
        };

        this.send = function(device, cmd, output, cb){
            RED.comms.publish("debug", {name: node.name, msg: 'sending to lirc: irsend SEND_ONCE ' + device + ' ' + cmd});
            //node.log('sending to lirc: ' + device + '/' + cmd);
            node.lirc.send(device, cmd, output, cb);
        };

        this.on("close", function() {
            node.log('disconnecting from lirc');
            node.lirc.end && node.lirc.end();
        });
    }

    RED.nodes.registerType("lirc-controller", LIRCControllerNode);

    /**
     * ====== Lirc-out =======================
     * Sends outgoing Global Cache device from
     * messages received via node-red flows
     * =======================================
     */
    function LIRCOut(config) {
        var node = this;
        RED.nodes.createNode(this, config);
        node.name = config.name;
        node.ctrl = RED.nodes.getNode(config.controller);
        node.device = config.device;
        node.output = config.output;

        node.ctrl && node.ctrl.registerDevice(node);

        this.on("input", function(msg) {
            RED.comms.publish("debug", {name: node.name, msg: 'lircout.onInput msg[' + util.inspect(msg) + ']'});
            //node.log('lircout.onInput msg[' + util.inspect(msg) + ']');
            if (!(msg && msg.hasOwnProperty('payload'))) return;
            var payload = msg.payload;
            if (typeof(msg.payload) === "object") {
                payload = msg.payload;
            } else if (typeof(msg.payload) === "string") {
                try {
                    payload = JSON.parse(msg.payload);
                } catch (e) {
                    payload = msg.payload.toString();
                }
            }
            if (payload == null || payload.trim().length == 0) {
                node.warn(node.name + ': lircout.onInput: illegal msg.payload!');
                return;
            }

            node.ctrl.send(node.device, payload, node.output, function(err) {
                if (err) {
                    node.error(node.name + ': send error: ' + err);
                }
                if (typeof(msg.cb) === 'function')
                    msg.cb(err);
            });

        });
        this.on("close", function() {
            node.log('lircOut [' + node.name +'] close');
        });

        node.status({
            fill: "red",
            shape: "dot",
            text: "not ready"
        });
    }

    RED.nodes.registerType("lirc-out", LIRCOut);
};