Some while ago I tried to find a library to write a bot for Telegram in golang. There were some written libraries, but almost all of them were outdated. So, I started to write my own. Here it is my library:
https://github.com/nasermirzaei89/telegram
I tried to keep it up to date and useful
Happy to hear feedback if you are a Golang Developer or Telegram Bot Developer or else.
Feel free to contribute to the library