127 lines
4.3 KiB
JavaScript
127 lines
4.3 KiB
JavaScript
/**
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* philips_hue.js
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* Basic functionality for accessing and contolling a Philips Hue wireless Lamp
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* Allows for bridge/gateway and light scanning, as well as Light ON/OFF/ALERT status update
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* Requires node-hue-api https://github.com/peter-murray/node-hue-api
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* Copyright 2013 Charalampos Doukas - @BuildingIoT
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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//Require node-hue-api
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var hue = require("node-hue-api");
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var HueApi = require("node-hue-api").HueApi;
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var RED = require(process.env.NODE_RED_HOME+"/red/red");
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//store the IP address of the Hue Gateway
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var gw_ipaddress = "";
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var username, lamp_status, lamp_id, color;
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function hexToRgb(hex) {
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var result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
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return result ? {
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r: parseInt(result[1], 16),
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g: parseInt(result[2], 16),
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b: parseInt(result[3], 16)
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} : null;
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}
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// The main node definition - most things happen in here
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function HueNode(n) {
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// Create a RED node
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RED.nodes.createNode(this,n);
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//get parameters from user
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this.username = n.username;
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this.lamp_status = n.lamp_status;
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this.lamp_id = n.lamp_id;
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this.color = n.color;
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var node = this;
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var msg = {};
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this.on("input", function(msg){
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//set the lamp status
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//first locate the Hue gateway:
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hue.locateBridges(function(err, result) {
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var msg2 = {};
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msg2.topic = this.topic;
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if (err) throw err;
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//check for found bridges
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if(result[0]!=null) {
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//save the IP address of the 1st bridge found
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this.gw_ipaddress = result[0].ipaddress;
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//set light status
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var api = new HueApi(this.gw_ipaddress, node.username);
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var lightState = hue.lightState;
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var state = lightState.create();
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var status;
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if(msg.payload=="ALERT"){
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status = "ALERT";
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}
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else if(node.lamp_status=="ON" || msg.payload=="ON") status = "ON";
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else if(node.lamp_status=="OFF" || msg.payload=="OFF") status = "OFF";
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if(status=="ALERT") {
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api.setLightState(node.lamp_id, state.alert()).then(displayResult).fail(displayError).done();
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}
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else if(status=="ON") {
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if(node.color==null) {
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api.setLightState(node.lamp_id, state.on().rgb(hexToRgb(msg.topic).r,hexToRgb(msg.topic).g,hexToRgb(msg.topic).b)).then(displayResult).fail(displayError).done();
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}
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else {
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api.setLightState(node.lamp_id, state.on().rgb(hexToRgb(node.color).r,hexToRgb(node.color).g,hexToRgb(node.color).b)).then(displayResult).fail(displayError).done();
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}
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}
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else {
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api.setLightState(node.lamp_id, state.off()).then(displayResult).fail(displayError).done();
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}
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msg2.payload = 'Light with ID: '+node.lamp_id+ ' was set to '+status;
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node.send(msg2);
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}
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else {
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//bridge not found:
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var msg = {};
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msg.payload = "Bridge not found!";
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node.send(msg);
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}
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});
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});
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this.on("close", function() {
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// Called when the node is shutdown - eg on redeploy.
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// Allows ports to be closed, connections dropped etc.
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// eg: this.client.disconnect();
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});
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}
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//hue debugging on the output:
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var displayResult = function(result) {
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console.log(result);
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};
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var displayError = function(err) {
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console.error(err);
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};
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// Register the node by name. This must be called before overriding any of the
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// Node functions.
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RED.nodes.registerType("HueNode",HueNode);
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