telegram

Telegram Bot Command

A simple Telegram Bot Command.

Tutorial

1. Follow the official Telegram guide for creating a Bot.

2. Deploy the Bot by clicking on this button:

3. Input TOKEN and BOT_NAME env variable fields. The token value should be available from the BotFather and the value BOT_NAME is the bot username that ends with either _bot or Bot.

4. Click on Create to create the project, then on Deploy to deploy the script.

5. Grab the URL that's displayed under Domains in the Production Deployment card.

6. Visit the following URL (make sure to replace the template fields):

   https://api.telegram.org/bot<YOUR_TOKEN>/setWebhook?url=<DOMAIN_NAME>/<YOUR_TOKEN>
   

   Replace <YOUR_TOKEN> with the token from the BotFather and <DOMAIN_NAME> with the URL from the previous step.

7. Add a command to the bot by visiting the following URL:

   https://api.telegram.org/bot<YOUR_TOKEN>/setMyCommands?commands=[{"command":"ping","description":"Should return a 'pong' from the Bot."}]
   

8. Now you can invite the bot to a Group Chat or just PM the bot with the following command "/ping".

Run Offline

You can run the example program on your machine using deno:

TOKEN=<your_telegram_bot_token> BOT_NAME=<bot_username> deno run --allow-env --allow-net https://raw.githubusercontent.com/denoland/deploy_examples/main/telegram/mod.ts

You need to use a tool like ngrok to tunnel Telegram requests to the app running on your machine.

1. Run ngrok http 8080 (assuming that the application is running on port 8080)
2. While registering the bot, use the https URL output by ngrok for url query.

Example: https://api.telegram.org/bot<YOUR_TOKEN>/setWebhook?url=<ngrok_url>/<YOUR_TOKEN>

That's it.