apal21 / Telegram-Bot-with-Authentication-and-Custom-Keyboard

Telegram Echo Bot with Authentication and Custom Keyboard.

Setup and Custom Keyboard

View this repository and README file for more information: https://github.com/apal21/Telegram-Bot-Custom-Keyboard-Node.js

How to Add Authentication

1. After setting up the basic Telegram Bot, in this repository I've created an array auth_users on Line #8
2. Inside this array remove all unnecessary User IDs and add your own IDs.
3. If there is a user whose id is not inside this array, he/she will always get the response Unauthorized User.
4. /id : Send this message to your bot to get your own User ID.

How It works?

1. In this node-telegram-bot-api package, callback of onText method's first argument is the message received by the bot.
2. You can see its content by printing this msg object.
3. Here msg.from.id gives the User Id and msg.from.username gives the Username of the user.
4. We can also use Username to authenticate users but in Telegram it is not mandatory to have a Username but the User ID will always be there. (Safe Game...)
5. authenticate_users function at the bottom of the index.js file will loop through all the User IDs and if any of the User ID matches with the ID from the message is sent, it returns true else it returns false.