ttb-ifttt
Version:
This node allow the user to use the channel Maker's trigger of IFTTT.
171 lines (161 loc) • 7.75 kB
JavaScript
module.exports = function(RED) {
"use strict";
var http = require('follow-redirects').http;
var https = require('follow-redirects').https;
var urllib = require("url");
var mustache = require("mustache");
var querystring = require("querystring");
function IFTTTTrigger(n) {
RED.nodes.createNode(this,n);
this.on("input",function(msg) {
this.secretkey = msg.secretkey || n.secretkey;
this.event = msg.event || n.event;
this.val1 = msg.value1 || n.val1;
this.val2 = msg.value2 || n.val2;
this.val3 = msg.value3 || n.val3;
this.url = `https://maker.ifttt.com/trigger/${this.event}/with/key/${this.secretkey}`;
if (this.val1 != "") {
this.url += "?value1=" + this.val1;
if (this.val2 != "") {
this.url += "&value2=" + this.val2;
if (this.val2 != "") {
this.url += "&value3=" + this.val3;
}
}
}
var nodeUrl = this.url;
var isTemplatedUrl = (nodeUrl||"").indexOf("{{") != -1;
var nodeMethod = n.method || "GET";
this.ret = n.ret || "txt";
var node = this;
var prox, noprox;
if (process.env.http_proxy != null) { prox = process.env.http_proxy; }
if (process.env.HTTP_PROXY != null) { prox = process.env.HTTP_PROXY; }
if (process.env.no_proxy != null) { noprox = process.env.no_proxy.split(","); }
if (process.env.NO_PROXY != null) { noprox = process.env.NO_PROXY.split(","); }
var preRequestTimestamp = process.hrtime();
node.status({fill:"blue",shape:"dot",text:"requesting"});
var url = nodeUrl || msg.url;
if (msg.url && nodeUrl && (nodeUrl !== msg.url)) { // revert change below when warning is finally removed
node.warn("Warning: msg properties can no longer override set node properties. See bit.ly/nr-override-msg-props");
}
if (isTemplatedUrl) {
url = mustache.render(nodeUrl, msg);
}
if (!url) {
node.error("No url specified",msg);
return;
}
// url must start http:// or https:// so assume http:// if not set
if (!((url.indexOf("http://") === 0) || (url.indexOf("https://") === 0))) {
url = "http://"+url;
}
var method = nodeMethod.toUpperCase() || "GET";
if (msg.method && n.method && (n.method !== "use")) { // warn if override option not set
node.warn("Warning: msg properties can no longer override fixed node properties. Use explicit override option. See bit.ly/nr-override-msg-props");
}
if (msg.method && n.method && (n.method === "use")) {
method = msg.method.toUpperCase(); // use the msg parameter
}
var opts = urllib.parse(url);
opts.method = method;
opts.headers = {};
if (msg.headers) {
for (var v in msg.headers) {
if (msg.headers.hasOwnProperty(v)) {
var name = v.toLowerCase();
if (name !== "content-type" && name !== "content-length") {
name = v;
}
opts.headers[name] = msg.headers[v];
}
}
}
var payload = null;
if (msg.payload && (method == "POST" || method == "PUT" || method == "PATCH" ) ) {
if (typeof msg.payload === "string" || Buffer.isBuffer(msg.payload)) {
payload = msg.payload;
} else if (typeof msg.payload == "number") {
payload = msg.payload+"";
} else {
if (opts.headers['content-type'] == 'application/x-www-form-urlencoded') {
payload = querystring.stringify(msg.payload);
} else {
payload = JSON.stringify(msg.payload);
if (opts.headers['content-type'] == null) {
opts.headers['content-type'] = "application/json";
}
}
}
if (opts.headers['content-length'] == null) {
if (Buffer.isBuffer(payload)) {
opts.headers['content-length'] = payload.length;
} else {
opts.headers['content-length'] = Buffer.byteLength(payload);
}
}
}
var urltotest = url;
var noproxy;
if (noprox) {
for (var i in noprox) {
if (url.indexOf(noprox[i]) !== -1) { noproxy=true; }
}
}
if (prox && !noproxy) {
var match = prox.match(/^(http:\/\/)?(.+)?:([0-9]+)?/i);
if (match) {
opts.headers['Host'] = opts.host;
var heads = opts.headers;
var path = opts.pathname = opts.href;
opts = urllib.parse(prox);
opts.path = opts.pathname = path;
opts.headers = heads;
urltotest = match[0];
}
else { node.warn("Bad proxy url: "+process.env.http_proxy); }
}
var req = ((/^https/.test(urltotest))?https:http).request(opts,function(res) {
(node.ret === "bin") ? res.setEncoding('binary') : res.setEncoding('utf8');
msg.statusCode = res.statusCode;
msg.headers = res.headers;
msg.payload = "";
res.on('data',function(chunk) {
msg.payload += chunk;
});
res.on('end',function() {
if (node.metric()) {
// Calculate request time
var diff = process.hrtime(preRequestTimestamp);
var ms = diff[0] * 1e3 + diff[1] * 1e-6;
var metricRequestDurationMillis = ms.toFixed(3);
node.metric("duration.millis", msg, metricRequestDurationMillis);
if (res.client && res.client.bytesRead) {
node.metric("size.bytes", msg, res.client.bytesRead);
}
}
if (node.ret === "bin") {
msg.payload = new Buffer(msg.payload,"binary");
}
else if (node.ret === "obj") {
try { msg.payload = JSON.parse(msg.payload); }
catch(e) { node.warn("JSON parse error"); }
}
node.send(msg);
node.status({});
});
});
req.on('error',function(err) {
msg.payload = err.toString() + " : " + url;
msg.statusCode = err.code;
node.send(msg);
node.status({fill:"red",shape:"ring",text:err.code});
});
if (payload) {
req.write(payload);
}
req.end();
});
}
RED.nodes.registerType("ifttt trigger", IFTTTTrigger);
}