I have some free time and my brother need some CRM bot so they can maintain their business easier.
Telegram require us to use https in our development environment, so you need to create your own SSL certificate to use this. Use below script to generate:
$ mkdir certs && cd certs
$ openssl req -x509 -newkey rsa:2048 -keyout keytmp.pem -out cert.pem -days 365
$ openssl rsa -in keytmp.pem -out key.pem