Presale question

Hi, my goal is to create a button in text format that when clicked downloads the ics file
The event data comes from my url

Example:
url
https://mysite.it?start_date=01/01/2000&end_date=01/01/2000 etc etc

My button will have to create an ics file that will have 01/01/2000 as start date and 01/01/2000 as end date

it’s possible ?

Thank you.