i am having an issue to get telegram user id using his username. there are few scenarios that i want to know is that possible or not
- if we have username of any user, can we get his/her user id from @userinfobot ?
- can we receive messages from user using Bot ?
- how to hide input option from bot ?
- how to add predefined buttons instead of input field ?
- also, if a user add our bot can we programmatically press the join button for him ?
it will be great help if anyone can answers the questions.