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node-red-nodes/social/pushover/57-pushover.js

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module.exports = function(RED) {
"use strict";
var PushOver = require('pushover-notifications');
var util = require('util');
var fs = require('fs');
function PushoverNode(n) {
RED.nodes.createNode(this,n);
this.title = n.title;
this.device = n.device;
this.priority = n.priority;
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this.sound = n.sound;
this.html = n.html;
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if (this.sound === '') { this.sound = null; }
var credentials = this.credentials;
if ((credentials) && (credentials.hasOwnProperty("pushkey"))) { this.pushkey = credentials.pushkey; }
else { this.error("No Pushover api token set"); }
if ((credentials) && (credentials.hasOwnProperty("deviceid"))) { this.deviceid = credentials.deviceid; }
else { this.error("No Pushover user key set"); }
var pusher = false;
if (this.pushkey && this.deviceid) {
pusher = new PushOver({
user: this.deviceid,
token: this.pushkey,
onerror: function(err) {
util.log('[57-pushover.js] Error: '+err);
}
});
}
var node = this;
this.on("input",function(msg) {
var title = node.title || msg.topic || "Node-RED";
var pri = node.priority || msg.priority || 0;
var dev = node.device || msg.device;
var sound = node.sound || msg.sound || null;
var url = node.url || msg.url || null;
var url_title = node.url_title || msg.url_title || null;
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var html = node.html || msg.html || false;
var attachment = msg.attachment || null;
var retry = msg.retry || 30;
var expire = msg.expire || 600;
if (isNaN(pri)) {pri=0;}
if (pri > 2) {pri = 2;}
if (pri < -2) {pri = -2;}
if (isNaN(retry)) {
retry = 30;
node.warn("No valid number for retry found, using default 30s retry interval");
}
if (isNaN(expire)) {
expire = 600;
node.warn("No valid number for expire time found, using default 600s retry duration");
}
if (retry < 30) {
retry = 30;
node.warn("Retry interval too low, using minimal 30s retry interval");
}
if (expire > 10800) {
expire = 10800;
node.warn("Expire time too high, using maximum setting of 10800s (3 hours) retry duration");
}
if (typeof msg.payload === 'undefined') { msg.payload = "(undefined msg.payload)"; }
if (typeof(msg.payload) === 'object') {
msg.payload = JSON.stringify(msg.payload);
}
else { msg.payload = msg.payload.toString(); }
if (pusher) {
var pushmsg = {
message: msg.payload,
title: title,
priority: pri,
retry: retry,
expire: expire,
html: html
};
if (dev) { pushmsg.device = dev; }
if (typeof(sound) === 'string') { pushmsg.sound = sound; }
if (typeof(url) === 'string') { pushmsg.url = url; }
if (typeof(url_title) === 'string') { pushmsg.url_title = url_title; }
if (html) { pushmsg.html = 1; }
if (typeof(attachment) === 'string') {
// Treat attachment as a path
fs.readFile(attachment,function(err, data) {
if (err) {
node.error("[57-pushover.js] Error: File Read Error: "+err);
return;
}
pushmsg.file = { data: data };
pushMessage(pushmsg);
});
return;
}
else if (attachment instanceof Buffer) {
// Is it base64 encoded or binary?
var attachmentString = attachment.toString();
var attachmentBuffer = Buffer.from(attachmentString,'base64');
if (attachmentString === attachmentBuffer.toString('base64')) {
// If converts back to same, then it was base64 so set to binary
// https://stackoverflow.com/a/48770228
attachment = attachmentBuffer;
}
// Unset these temporary values
attachmentBuffer = attachmentString = undefined;
// attach the buffer
pushmsg.file = { data: attachment };
}
else if (attachment) {
node.error("[57-pushover.js] Error: attachment property must be a path to a local file or a Buffer containing an image");
return;
}
pushMessage(pushmsg,msg);
}
else {
node.warn("Pushover credentials not set.");
}
});
function pushMessage(pushmsg,msg) {
pusher.send( pushmsg, function(err, response) {
if (err) { node.error(err,msg); }
else {
try {
var responseObject = JSON.parse(response);
if (responseObject.status !== 1) { node.error("[57-pushover.js] Error: "+response); }
}
catch(e) {
node.error("[57-pushover.js] Error: "+response);
}
}
});
}
}
RED.nodes.registerType("pushover",PushoverNode,{
credentials: {
deviceid: {type:"text"},
pushkey: {type: "password"}
}
});
}