How to host your Telegram bot on Google App Script

README.md

Telegram Bot on Google App Script

This is the source code of one of my blog post. To read the full blog post please click here.

bot.js

var token = 'xxx';

function doPost(e) {
  // Make sure to only reply to json requests
  if(e.postData.type == "application/json") {
    
    // Parse the update sent from Telegram
    var update = JSON.parse(e.postData.contents);

    // Instantiate our bot passing the update 
    var bot = new Bot(token, update);
    
    // Building commands
    var bus = new CommandBus();
    bus.on(/\/start/, function () {
      this.replyToSender("Congratulations! It works!");
    });
    
    bus.on(/\/joke\s*([A-Za-z0-9_]+)?\s*([A-Za-z0-9_]+)?/, randomJoke);
    
    // Register the command bus
    bot.register(bus);
    
    // If the update is valid, process it
    if (update) {
      bot.process();
    }   
  }      
}

function setWebhook() {
  var bot = new Bot(token, {});
  var result = bot.request('setWebhook', {
    url: // publish your app and put your /excec URL here
  });
  
  Logger.log(result);
}

function randomJoke(name, surname) {
  var firstName = name || null;
  var lastName = surname || null;
      
  var url = 'http://api.icndb.com/jokes/random?escape=javascript';
  
  if (firstName) url += '&firstName=' + firstName;
  if (lastName) url += '&lastName=' + lastName;
  
  var data = JSON.parse(UrlFetchApp.fetch(url).getContentText());

  this.replyToSender(data.value.joke);
}

function Bot (token, update) {
  this.token = token;
  this.update = update;
  this.handlers = [];
}

Bot.prototype.register = function ( handler) {
  this.handlers.push(handler);
}

Bot.prototype.process = function () {  
  for (var i in this.handlers) {
    var event = this.handlers[i];
    var result = event.condition(this);
    if (result) {
      return event.handle(this);
    }
  }
}

Bot.prototype.request = function (method, data) {
  var options = {
    'method' : 'post',
    'contentType': 'application/json',
    'payload' : JSON.stringify(data)
  };
  
  var response = UrlFetchApp.fetch('https://api.telegram.org/bot' + this.token + '/' + method, options);
    
  if (response.getResponseCode() == 200) {
    return JSON.parse(response.getContentText());
  }
  
  return false;
}

Bot.prototype.replyToSender = function (text) {
  return this.request('sendMessage', {
    'chat_id': this.update.message.from.id,
    'text': text
  });
}

function CommandBus() {
  this.commands = [];
}

CommandBus.prototype.on = function (regexp, callback) {
  this.commands.push({'regexp': regexp, 'callback': callback});
}

CommandBus.prototype.condition = function (bot) {
  return bot.update.message.text.charAt(0) === '/';
}

CommandBus.prototype.handle = function (bot) {  
  for (var i in this.commands) {
    var cmd = this.commands[i];
    var tokens = cmd.regexp.exec(bot.update.message.text);
    if (tokens != null) {
      return cmd.callback.apply(bot, tokens.splice(1));
    }
  }
  return bot.replyToSender("Invalid command");
}

Changing the function name to "function doPost(e)" works for me.
Also setWebhook https://gist.github.com/unnikked/828e45e52e217adc09478321225ec3de#gistcomment-3226679

Thanks @unnikked 👍

Thank you guys for your contributions! I did not know that this blew up over these years! Feel free to share your ideas!

You can join my community on Telegram.

Thank you guys for your contributions! I did not know that this blew up over these years! Feel free to share your ideas!

You can join my community on Telegram.

hi unnikked thank you for share this
i have a little problem i can write code just in one page https://ibb.co/pnS6CNr
i want write code just Return the user message and i that massage input var x ="massage"

 

Среда, 13 января 2021, 21:14 +03:00 от xMA3x ***@***.***>:   @xMA3x commented on this gist. ---------------------------------------------------------------------- can you add a function that let the message appear in the spreadsheet? — You are receiving this because you commented. Reply to this email directly, view it on GitHub , or unsubscribe .

Я не понял, что Вам надо отображать в таблице, когда ушло сообщение ?   -- леха иванов  

The site unnikked.ga is down.
https://www.webpagetest.org/viewlog.php?test=211102_BiDcRH_e38e09f86dda4f4dd766da6ede76176a

Add keyboard to replytosender:

replyToSender(text,keys) { return this.request('sendMessage',{ 'chat_id': this.update.message.from.id, 'text': text, 'parse_mode': "HTML", 'reply_markup': JSON.stringify(keys) }); }

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