How to scheduling push notifications using azure sdk for node - node.js

Question

I know it is possible in .net, i can see the reference over here https://learn.microsoft.com/en-us/azure/notification-hubs/notification-hubs-send-push-notifications-scheduled. But I want to know how to do that in node. Can any one guide me on this.

Answer 1

You can send a scheduled notification in Node using the REST API. Use the specification for sending a normal notification and replace /messages with /schedulednotifications. You will also need to add a header specifying the datetime named ServiceBusNotification-ScheduleTime.
For an example using the template schema:
var CryptoJS = require("crypto-js");
var axios = require("axios");
var getSelfSignedToken = function(targetUri, sharedKey, keyName,
expiresInMins) {
targetUri = encodeURIComponent(targetUri.toLowerCase()).toLowerCase();
// Set expiration in seconds
var expireOnDate = new Date();
expireOnDate.setMinutes(expireOnDate.getMinutes() + expiresInMins);
var expires = Date.UTC(expireOnDate.getUTCFullYear(), expireOnDate
.getUTCMonth(), expireOnDate.getUTCDate(), expireOnDate
.getUTCHours(), expireOnDate.getUTCMinutes(), expireOnDate
.getUTCSeconds()) / 1000;
var tosign = targetUri + '\n' + expires;
// using CryptoJS
var signature = CryptoJS.HmacSHA256(tosign, sharedKey);
var base64signature = signature.toString(CryptoJS.enc.Base64);
var base64UriEncoded = encodeURIComponent(base64signature);
// construct autorization string
var token = "SharedAccessSignature sr=" + targetUri + "&sig="
+ base64UriEncoded + "&se=" + expires + "&skn=" + keyName;
// console.log("signature:" + token);
return token;
};
var keyName = "<mykeyName>";
var sharedKey = "<myKey>";
var uri = "https://<mybus>.servicebus.windows.net/<myhub>";
var expiration = 10;
var token = getSelfSignedToken(uri, sharedKey, keyName, expiration);
const instance = axios.create({
baseURL: uri,
timeout: 100000,
headers: {
'Content-Type': 'application/octet-stream',
'X-WNS-Type': 'wns/raw',
'ServiceBusNotification-Format' : 'template',
'ServiceBusNotification-ScheduleTime': '2019-07-19T17:13',
'authorization': token}
});
var payload = {
"alert" : " This is my test notification!"
};
instance.post('/schedulednotifications?api-version=2016-07', payload)
.then(function (response) {
console.log(response);
}).catch(function (error) {
// handle error
console.log(error);
});