node-red-nodes/hardware/wemo/60-wemo.js

/**
 * Copyright 2013 IBM Corp.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 **/

module.exports = function(RED) {
    "use strict";
    var WeMo = new require('wemo');

    function WeMoOut(n) {
        RED.nodes.createNode(this,n);
        this.ipaddr = n.ipaddr;
        this.wemoSwitch = new WeMo(n.ipaddr);
        var node = this;

        this.on("input", function(msg) {
            if (msg != null) {
                var state = 0;
                if ( msg.payload == 1 || msg.payload === true || msg.payload == "on" ) { state = 1; }
                node.wemoSwitch.setBinaryState(state, function(err, result) {
                    if (err) { node.warn(err); }
                    //else { node.log(result); }
                });
            }
        });
    }
    RED.nodes.registerType("wemo out",WeMoOut);

    function WeMoIn(n) {
        RED.nodes.createNode(this,n);
        this.ipaddr = n.ipaddr;
        this.wemoSwitch = new WeMo(n.ipaddr);
        this.wemoSwitch.state = 0;
        var node = this;

        var tick = setInterval(function() {
            wemoSwitch.getBinaryState(function(err, result) {
                if (err) { node.warn(err); }
                if (parseInt(result) != wemoSwitch.state) {
                    wemoSwitch.state = parseInt(result);
                    node.send({payload:wemoSwitch.state,topic:"wemo/"+node.ipaddr});
                }
            });
        }, 2000);

        this.on("close", function() {
            clearInterval(tick);
        });
    }
    RED.nodes.registerType("wemo in",WeMoOut);
}