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node-red-nodes/parsers/what3words/what3words.js

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module.exports = function(RED) {
"use strict";
var What3Words = require('geo.what3words');
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var what3wordsNode = function(n) {
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RED.nodes.createNode(this, n);
this.lang = n.lang || "en";
var node = this;
//if ( !node.credentials.apikey ) { this.error("No what3words API key set"); }
this.w3w = new What3Words(node.credentials.apikey);
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var w1 = /^\*\w{6,31}$/;
var w3 = /^\w+\.\w+\.\w+$/;
this.on("input", function(msg) {
if (msg.hasOwnProperty("location")) {
var lat = msg.location.lat;
var lon = msg.location.lon;
node.w3w.positionToWords({ position:lat + "," + lon, lang:node.lang })
.then(function(response) {
msg.payload = response; // prom.cape.pump
if (!msg.hasOwnProperty("topic") || (msg.topic === "")) { msg.topic = "what3words"; }
node.send(msg);
})
.catch(function(err) {
node.warn(err)
});
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}
else if (typeof (msg.payload) === "string") {
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if (msg.payload.split(",").length === 2) { // see if it's 2 comma separated words
node.w3w.positionToWords({ position:msg.payload, lang:node.lang })
.then(function(response) {
msg.payload = response; // prom.cape.pump
if (!msg.hasOwnProperty("topic") || (msg.topic === "")) { msg.topic = "what3words"; }
node.send(msg);
})
.catch(function(err) {
node.warn(err);
});
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}
else if (msg.payload.match(w3)) { // see if it's 3 dot separated words
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node.w3w.wordsToPosition({ words:msg.payload })
.then(function(response) {
if (!msg.hasOwnProperty("location")) { msg.location = {}; }
msg.location.lat = Number(response.split(",")[0]);
msg.location.lon = Number(response.split(",")[1]);
node.send(msg);
})
.catch(function(err) {
node.warn(err)
});
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}
else if (msg.payload.match(w1)) { // see if it's a *Oneword
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node.w3w.wordsToPosition({ words:msg.payload })
.then(function(response) {
if (!msg.hasOwnProperty("location")) { msg.location = {}; }
msg.location.lat = Number(response.split(",")[0]);
msg.location.lon = Number(response.split(",")[1]);
msg.payload = response;
node.send(msg);
})
.catch(function(err) {
node.warn(err);
});
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}
else { node.warn("No useable data found. See info."); }
}
else { node.warn("No useable data found. See info."); }
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});
}
RED.nodes.registerType("what3words", what3wordsNode, {
credentials: { apikey: {type: "password"} }
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});
}