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node-red-nodes/parsers/what3words/what3words.js
2015-06-01 09:07:28 +01:00

117 lines
5.1 KiB
JavaScript

/**
* Copyright 2014 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 What3Words = require('geo.what3words');
var what3wordsNode = function(n) {
RED.nodes.createNode(this, n);
this.lang = n.lang || "en";
var credentials = RED.nodes.getCredentials(n.id);
if ((credentials) && (credentials.hasOwnProperty("pushkey"))) { this.pushkey = credentials.pushkey; } else { this.error("No what3words API key set"); }
this.w3w = new What3Words(this.pushkey);
var node = this;
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)
});
} else if (typeof (msg.payload) === "string") {
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);
});
} else if (msg.payload.match(w3)) { // see if it's 3 dot separated words
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)
});
} else if (msg.payload.match(w1)) { // see if it's a *Oneword
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);
});
} else { node.warn("No useable data found. See info."); }
} else { node.warn("No useable data found. See info."); }
});
}
RED.nodes.registerType("what3words", what3wordsNode);
var querystring = require('querystring');
RED.httpAdmin.get('/what3words/:id', function(req, res) {
var credentials = RED.nodes.getCredentials(req.params.id);
if (credentials) {
res.send(JSON.stringify({hasPassword:(credentials.pushkey && credentials.pushkey !== "")}));
} else {
res.send(JSON.stringify({}));
}
});
RED.httpAdmin.delete('/what3words/:id', function(req, res) {
RED.nodes.deleteCredentials(req.params.id);
res.send(200);
});
RED.httpAdmin.post('/what3words/:id', function(req, res) {
var body = "";
req.on('data', function(chunk) {
body += chunk;
});
req.on('end', function() {
var newCreds = querystring.parse(body);
var credentials = RED.nodes.getCredentials(req.params.id) || {};
if (newCreds.pushkey === "") {
delete credentials.pushkey;
} else {
credentials.pushkey = newCreds.pushkey || credentials.pushkey;
}
RED.nodes.addCredentials(req.params.id, credentials);
res.send(200);
});
});
}