How to synchronize Google Calendar & Spreadsheet with Script

Question

I am trying to create a Google Apps Script that keeps a Google Calendar and a \"master spreadsheet\" on Drive synchronized -- is this possible? I found these two posts:

Answer 1

No there isn't. And although a lot of issues regarding Apps Script Calendar Service has been solved (timezones, all day events, queries and so on), it's still a fairly complex task.

I know Serge, the top contributor here in SO on #google-apps-script tag, has developed quite some scripts involving the Calendar Service.

But I don't know of anyway that made a two-way update between a calendar and a spreadsheet. It should be a hard one. If you ever do, please be kind to share :)