title: Is it possible to add events to a user's google calendar (via my server) after some event in my application?
body: <p>I am trying to figure out if it is possible to add events to a user's google calendar server side via Firebase. </p>
  
  <p>I have read <a href="https://stackoverflow.com/a/28232676">this</a> and <a href="https://stackoverflow.com/questions/26064095/inserting-google-calendar-entries-with-service-account">this</a> which seems to be what I am trying to achieve but it explains that the user which I'd like to add events to their calendar should share 
  their calendar with the account I create for my application. </p>
  
  <p>Is that true or am I misunderstanding something? </p>
  
  <p>I also appreciate it if there is any guide for JavaScript/NodeJS. </p>