Social: pushover; add callback parameter w/ documentation (#832)

* adding callback parameter to pushover node.

* pushover: callback feature added

* social/pushover documentation

* PR: added callback parameter to pushover

Author: brianmangan

social/pushover/57-pushover.html

@@ -86,6 +86,7 @@
 	<p><code>msg.sound</code>: set the notification sound, <i><a href="https://pushover.net/api#sounds" target="_new">see the available options</a></i></p>
     <p><code>msg.retry</code>: set retry interval for Emergency priority (2) messages, <i><a href="https://pushover.net/api#priority" target="_new">see details</a></i></p>
     <p><code>msg.expire</code>: set retry duration for Emergency priority (2) messages, <i><a href="https://pushover.net/api#priority" target="_new">see details</a></i></p>
+    <p><code>msg.callback</code>: set the callback url for Emergency priority (2) messages, <i><a href="https://pushover.net/api/receipts#callback" target="_new">see details</a></i></p>
     <p>Uses Pushover. See <i><a href="https://pushover.net" target="_new">this link</a></i> for more details.</p>
 </script>
 

social/pushover/57-pushover.js

@@ -41,6 +41,7 @@ module.exports = function(RED) {
             var attachment = msg.attachment || null;
             var retry = msg.retry || 30;
             var expire = msg.expire || 600;
+            var callback = msg.callback || null;
             if (isNaN(pri)) {pri=0;}
             if (pri > 2) {pri = 2;}
             if (pri < -2) {pri = -2;}
@@ -78,6 +79,7 @@ module.exports = function(RED) {
                 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 (typeof(callback) === 'string') { pushmsg.callback = callback; }
                 if (html) { pushmsg.html = 1; }
                 if (typeof(attachment) === 'string') {
                     // Treat attachment as a path

social/pushover/README.md

@@ -28,6 +28,7 @@ Optionally uses `msg.topic` to set the configuration, if not already set in the
  - `msg.sound`: to set the alert sound, see the [available options](https://pushover.net/api#sounds)
  - `msg.retry`: to set retry interval for Emergency priority (2) messages, see [priority](https://pushover.net/api#priority)
  - `msg.expire`: to set retry duration for Emergency priority (2) messages, see [priority](https://pushover.net/api#priority)
+ - `msg.callback`: to set callback url for Emergency priority (2) messages, see [callback](https://pushover.net/api/receipts#callback)
 
 The User-key and API-token are stored in a separate credentials file.