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node-red-nodes/time/79-suncalc.js

62 lines
2.2 KiB
JavaScript

/**
* 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 SunCalc = require('suncalc');
function SunNode(n) {
RED.nodes.createNode(this,n);
this.lat = n.lat;
this.lon = n.lon;
this.start = n.start;
this.end = n.end;
var node = this;
var oldval = null;
this.tick = setInterval(function() {
var now = new Date();
var hour = now.getUTCHours();
var mins = now.getUTCMinutes();
var times = SunCalc.getTimes(now, node.lat, node.lon);
var hour1 = times[node.start].getUTCHours();
var mins1 = times[node.start].getUTCMinutes();
var hour2 = times[node.end].getUTCHours();
var mins2 = times[node.end].getUTCMinutes();
var e1 = (hour*60+mins) - (hour1*60+mins1);
var e2 = (hour*60+mins) - (hour2*60+mins2);
var moon = SunCalc.getMoonIllumination(now).fraction;
msg = { payload:0, topic:"sun", moon:moon };
if ((e1 > 0) & (e2 < 0)) { msg.payload = 1; }
if (oldval == null) { oldval = msg.payload; }
if (msg.payload == 1) { node.status({fill:"yellow",shape:"dot",text:"day"}); }
else { node.status({fill:"blue",shape:"dot",text:"night"}); }
if (msg.payload != oldval) {
oldval = msg.payload;
msg2 = msg;
node.send( [msg,msg2] );
}
else { node.send(msg); }
}, 60000);
this.on("close", function() {
clearInterval(this.tick);
});
}
RED.nodes.registerType("sunrise",SunNode);
}