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Add what3words node

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node-red-node-what3words
========================
A <a href="http://nodered.org" target="_new">Node-RED</a> node to convert positions to what3words...
Install
-------
Run the following command in the root directory of your Node-RED install
npm install node-red-node-what3words
Pre-reqs
--------
You will need a valid API key from <a href="http://what3words.com/">what3words</a>
Usage
-----
Uses What 3 Words to convert a location to 3 unique words.
and vice versa. Don't ask... just try it...
To convert position to words it requires
- msg.location.lat
- msg.location.lon
or
- msg.payload containing a string lat,lon
To convert words to position it requires
- msg.payload containing a string unique.three.words
The API-key is stored in a separate credentials file.
**Note:** This is an online service and requires a live internet connection and a valid API key to work correctly.
See <a href="http://what3words.com/" target="_new">what3words</a> for more details.</p>
Example flow:
[{"id":"f38eba15.0c7148","type":"inject","name":"","topic":"","payload":"calibrate.newlyweds.switched","payloadType":"string","repeat":"","crontab":"","once":false,"x":646,"y":319,"z":"cf058368.30fa8","wires":[["22d6b2a5.dd294e"]]},{"id":"22d6b2a5.dd294e","type":"what3words","title":"","name":"","x":881,"y":317,"z":"cf058368.30fa8","wires":[["9caf8aa8.635078"]]},{"id":"9caf8aa8.635078","type":"debug","name":"","active":true,"console":false,"complete":"true","x":1077,"y":315,"z":"cf058368.30fa8","wires":[]}]

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{
"name" : "node-red-node-what3words",
"version" : "0.0.1",
"description" : "A Node-RED node to convert locations to/from what3words",
"dependencies" : {
"geo.what3words" : "0.0.2"
},
"repository" : {
"type":"git",
"url":"https://github.com/node-red/node-red-nodes/tree/master/parsers/what3words"
},
"license": "Apache-2.0",
"keywords": [ "node-red", "what3words" ],
"node-red" : {
"nodes" : {
"what3words": "what3words.js"
}
},
"author": {
"name": "Dave Conway-Jones",
"email": "ceejay@vnet.ibm.com",
"url": "http://nodered.org"
}
}

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<!--
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.
-->
<script type="text/x-red" data-template-name="what3words">
<div class="form-row">
<label for="node-config-input-pushkey"><i class="fa fa-key"></i> API Key</label>
<input type="password" id="node-config-input-pushkey">
</div>
<div class="form-row">
<label for="node-input-lang"><i class="fa fa-language"></i> Language</label>
<select type="text" id="node-input-lang" style="width:73%;">
<option value="en">English</option>
<option value="de">German</option>
<option value="es">Spanish</option>
<option value="fr">French</option>
<option value="pt">Portuguese</option>
<option value="ru">Russian</option>
<option value="sv">Swedish</option>
<option value="tr">Turkish</option>
</select>
</div>
<br/>
<div class="form-row">
<label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
<input type="text" id="node-input-name" placeholder="Name">
</div>
</script>
<script type="text/x-red" data-help-name="what3words">
<p>Uses what3words to convert a location to a unique three.word.combination .</p>
<p>Expects either <ul>
<li><b>msg.location.lat</b> and <b>msg.location.lon</b>, or </li>
<li><b>msg.payload</b> to contain a <i>lat,lon</i> string,</li>
</ul> and produces a msg.payload of unique.three.words .</p>
<p>Also does the reverse by accepting a <b>dot (.)</b> separated three.word.string in <b>msg.payload</b>, and adds the corresponding <b>msg.location</b> property.</p>
<p><b>Note:</b> This is an online service and requires a live internet connection.</p>
<p>The API-key is stored in a separate credentials file.</p>
<p>See <i><a href="http://www.what3words.com/" target="_new">what3words</a></i> for more details.</p>
</script>
<script type="text/javascript">
RED.nodes.registerType('what3words',{
category: 'location',
defaults: {
title: {value:""},
lang: {value:"en"},
name: {value:""}
},
color:"#DEBD5C",
inputs:1,
outputs:1,
icon: "arrow-in.png",
label: function() {
return this.name||"what3words";
},
labelStyle: function() {
return this.name?"node_label_italic":"";
},
oneditprepare: function() {
$.getJSON('nma/'+this.id,function(data) {
if (data.hasPassword) {
$('#node-config-input-pushkey').val('__PWRD__');
} else {
$('#node-config-input-pushkey').val('');
}
});
},
oneditsave: function() {
var credentials = {};
var newPass = $('#node-config-input-pushkey').val();
if (newPass != '__PWRD__') {
credentials.pushkey = newPass;
$.ajax({
url: 'nma/'+this.id,
type: 'POST',
data: credentials,
success: function(result){}
});
}
},
ondelete: function() {
$.ajax({
url: 'nma/'+this.id,
type: 'DELETE',
success: function(result) {}
});
}
});
</script>

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/**
* 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');
function what3wordsNode(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);
});
});
}