Posted on Mar 13, 2024

Send Message BOT Telegram NodeJs

Intruduction

Create telegram bot to send message from NODEJS Apps.

Create BOT Telegram

Goto BotFather
Open it from mobile device or web.telegram.org
type

 \newbot

Follow instruction
When completed youll get API Token, copy it to somewhere saved.

Test BOT

Open Postman/Insomnia or anything like that.
Create GET request sample.

 # HTTP request format # https://api.telegram.org/bot<token>/METHOD_NAME # our first method /getMe https://api.telegram.org/bot123456:ABC-DEF1234ghIkl-zyx57W2v1u123ew11/getMe

Now you can see your user data

Building NodeJS

Init nodejs app

 # configure as needed npm init; # install dependencies npm i express axios body-parser --save; # create main file touch index.js;

Create index.js

 // Dependencies const express = require('express'); const app = express(); const axios = require('axios'); const bodyParser = require('body-parser'); const port = 80; const url = 'https://api.telegram.org/bot'; const apiToken = '{api-token-given-by-BotFather}'; // Configurations app.use(bodyParser.json()); // Endpoints app.post('/', (req, res) => { // console.log(req.body); const chatId = req.body.message.chat.id; const sentMessage = req.body.message.text; // Regex for hello if (sentMessage.match(/hello/gi)) { axios.post(`${url}${apiToken}/sendMessage`, { chat_id: chatId, text: 'hello back 👋' }) .then((response) => { res.status(200).send(response); }).catch((error) => { res.send(error); }); } else { // if no hello present, just respond with 200 res.status(200).send({}); } }); // Listening app.listen(port, () => { console.log(`Listening on port ${port}`); });