pusher_test.js

function sendToPusher(event,data) {
   var pvals={
     appId: '',
     key: '',
     secret: '',
     cluster: 'us2',
     encrypted: true
   };
   
   var url = `https://api-${pvals["cluster"]}.pusher.com/apps/${pvals["appId"]}/events`;
   var body = {"name":event,"channels":["my-channel"],"data":JSON.stringify(data)};
   var bodystring = JSON.stringify(body);
   var now=new Date();
   var d = Math.round(now.getTime() / 1000);
   var auth_timestamp = d;
   var auth_version = '1.0';
   var bodymd5 = byteToString(Utilities.computeDigest(Utilities.DigestAlgorithm.MD5, bodystring));
   var wholething = `POST
 /apps/${pvals["appId"]}/events
 auth_key=${pvals["key"]}&auth_timestamp=${auth_timestamp}&auth_version=${auth_version}&body_md5=${bodymd5}`;
   var wholethingencrypt = byteToString(Utilities.computeHmacSha256Signature(wholething,pvals["secret"]));
   Logger.log(wholethingencrypt);
   
 
   var options = {
     'method' : 'post',
     'contentType': 'application/json',
     // Convert the JavaScript object to a JSON string.
     'payload' : bodystring,
     'muteHttpExceptions' : true
   };
   var urltry = UrlFetchApp.fetch(url+`?auth_key=${pvals["key"]}&auth_timestamp=${auth_timestamp}&auth_version=${auth_version}&body_md5=${bodymd5}&auth_signature=${wholethingencrypt}`, options);
 
   
   }
   
 function byteToString(byte) {
   var signature = byte.reduce(function(str,chr){
     chr = (chr < 0 ? chr + 256 : chr).toString(16);
     return str + (chr.length==1?'0':'') + chr;
   },'');
   return signature;
   }
 
 function sendMessage(message)
 {
   sendToPusher('test', {message: message});
 
 }
 
 function test()
 {
   sendMessage("hi")
 }
 
 
 function doGet(e)
 {
   var t = HtmlService.createTemplateFromFile("main");
   return t.evaluate();
 }