96 lines
2.9 KiB
JavaScript
96 lines
2.9 KiB
JavaScript
/**
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* Copyright 2015 IBM Corp.
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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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module.exports = function(RED) {
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"use strict";
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var eddystoneBeacon = require('eddystone-beacon');
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var EddystoneBeaconScanner = require('eddystone-beacon-scanner');
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var eddyBeacon = false;
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function Beacon(n) {
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RED.nodes.createNode(this,n);
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var node = this;
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node.power = n.power;
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node.period = n.period * 10;
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node.url = n.url;
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node.options = {
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txPowerLevel: node.power,
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tlmPeriod: node.period,
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tlmCount: 2
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};
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if (node.url) {
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if (!eddyBeacon) {
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eddyBeacon = true;
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try {
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eddystoneBeacon.advertiseUrl(node.url, node.options);
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node.status({fill:"green",shape:"dot",text:node.url});
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} catch(e) {
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node.error('Error setting beacon URL', e);
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}
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}
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else {node.warn('Beacon node already in use');}
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}
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node.on('input', function(msg) {
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try {
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eddystoneBeacon.advertiseUrl(msg.payload, node.options);
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node.status({fill:"green",shape:"dot",text:node.url.toString()});
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} catch(e) {
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node.status({fill:"red",shape:"circle",text:"URL too long"});
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node.error('error updating beacon URL', e);
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}
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});
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node.on('close', function(done) {
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eddyBeacon = false;
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try {
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node.status({});
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eddystoneBeacon.stop();
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done();
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} catch(e) {
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node.error('error shutting down beacon', e);
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}
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});
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}
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RED.nodes.registerType("PhysicalWeb out", Beacon);
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function Scanner(n) {
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RED.nodes.createNode(this,n);
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var node = this;
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node.topic = n.topic;
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function onFound(beacon) {
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node.send({
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topic: node.topic,
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payload: beacon
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});
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}
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EddystoneBeaconScanner.on('found', onFound);
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EddystoneBeaconScanner.on('updated', onFound);
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node.on('close',function(done) {
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EddystoneBeaconScanner.removeListener('found', onFound);
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EddystoneBeaconScanner.removeListener('updated', onFound);
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done();
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});
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}
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RED.nodes.registerType("PhysicalWeb in", Scanner);
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};
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