Simple Telegram Notifications

If you want to receive private notifications from your web app in Telegram here are simple code snippets on Node.js, Ruby and PHP that will allow you to do it.

You can have 1 bot fot many channel. Once you've create a bot. You can add it to another channel (skip step 1 and start with step 2)

Pre Requirements

1. Create a bot

1. Find @BotFather in Telegram
2. /newbot
3. Choose a name
4. Choose a username
5. Get token. Should be something like: 992382811:DKyqVhUJsjP-uJivOf2yQi5MuUVvsRyRaZMh

2. Add bot to the group chat

1. Create a group chat or add to existing one
2. Add your bot there

3. Get Chat ID

1. Add @RawDataBot bot to your group chat
2. Get Chat ID from the JSON That you've got from @RawDataBot
3. Remove @RawDataBot from your chat

4. Test your bot

1. Add code snippet to your project
2. Change the token and the chat id to yourth
3. Call the function send_telegram("hi")

Node.js

// where package.json is located: `npm install node-fetch`
// or `npm install -g node-fetch` to install globally
const fetch = require("node-fetch");
const sendTelegram = async (message) => {
	const token = "YOUR_BOT_TOKEN";
	const data = Object.entries({
	    	text: message,
	    	chat_id: "YOUR_CHAT_ID",
	    	parse_mode: "html"
	    })
	    .map(entry => entry[0] + "=" + entry[1])
	    .join("&");

	const url = `https://api.telegram.org/bot${token}/sendMessage?${data}`;
	console.log(`url: ${url}`);
	const response = await fetch(url);
	const json = await response.json();
	console.log(json);
	return json;	
};

sendTelegram("hi!");

Ruby

require "open-uri"

class Telegram

  def send_telegram(message)
      token = "YOUR_TOKEN"
      
      data = {
        text: message,
        chat_id: "YOUR_CHAT_ID"
      }
      url = "https://api.telegram.org/bot#{token}/sendMessage?#{data.to_param}&parse_mode=html"
      puts "telegram url: " + url
      open(url).read
    end
    
    send_telegram("hi!")
end

PHP

<?php
function send_telegram($message) {
	$token = "YOUR_TOKEN";
	$data = [
		'text' => $message,
		'chat_id' => 'YOUR_CHAT_ID'
	];

	file_get_contents("https://api.telegram.org/bot$token/sendMessage?" . http_build_query($data) . "&parse_mode=html");
}

send_telegram("hi!")

Python

import urllib.parse
import urllib.request

def send_telegram(message):
    token = "YOUR_TOKEN"
    
    data = {
        'text': message,
        'chat_id': 'YOUR_CHAT_ID'
    }
    url = f"https://api.telegram.org/bot{token}/sendMessage?{urllib.parse.urlencode(data)}&parse_mode=html"
    response = urllib.request.urlopen(url)
    return response.read().decode()

send_telegram("hi!")