Cài đặt Webhook cho Telegram Bot qua AppScript của Google Sheet

Add đoạn code sau vào mục App Script của Google Sheet:
var apiSecret = "***";
var url = "https://api.telegram.org/bot"+apiSecret;
 
var webAppUrl = "https://script.google.com/macros/s/******/exec";
 
function getMe() {
  var response = UrlFetchApp.fetch(url+'/getMe');
 
  Logger.log(response.getContentText());
}
 
function getUpdates() {
  var response = UrlFetchApp.fetch(url+'/getUpdates');
 
  Logger.log(response.getContentText());
}
 
function setWebhook() {
  var response = UrlFetchApp.fetch(url+'/setWebhook?url='+webAppUrl);
 
  Logger.log(response.getContentText());
}
 
function getWebhookInfo() {
  var response = UrlFetchApp.fetch(url+'/getWebhookInfo');
 
  Logger.log(response.getContentText());
}
 
function deleteWebhook() {
  var response = UrlFetchApp.fetch(url+'/deleteWebhook');
 
  Logger.log(response.getContentText());
}
 
function sendMessage(id, message) {
  var response = UrlFetchApp.fetch(url+'/sendMessage?chat_id='+id+'&text='+message);
 
  Logger.log(response.getContentText());
}
 
function doGet(e){
  return HtmlService.createHtmlOutput('Hello '+JSON.stringify(e))
}
 
function doPost(e){
  var contents = JSON.parse(e.postData.contents);
 
  Logger.log(contents);
 
  if(contents.my_chat_member){
    var group_id = contents.my_chat_member.chat.id;
    var group_name = contents.my_chat_member.chat.title;
    var message = 'Hello group '+group_name+'. The group id is '+group_id+'. Please enter your group id into the webhook of the Website that I can notify you of the latest information.';
 
    //GmailApp.sendEmail('tungnt.blue@gmail.com', "Telegram Bot Update", JSON.stringify(contents, null, 4));
 
    sendMessage(group_id, message)
  }
}
 
function testSendMessage(){
    var group_id = -536117828;
    var group_name = 'Test';
    var message = 'Hello group '+group_name+'. The group id is '+group_id+'. Please enter your group id into the webhook of the Website that I can notify you of the latest information.';
 
    sendMessage(group_id, message)  
}