Distinguish "available & busy" from Google Calendar "Private adress" iCal link

Question

I am retrieving a iCal from a Google Calendar "Private adress" link in JSON format.

I can see both events that are available and busy but can not see any difference between them. I imported them to PHP, also tried the ?alt=json option to get a JSON object but no where saw a distinction between both.

But if I look at the same calendar shared with me with the free/busy information (Hide details) option checked, then I only see the busy events.

Is there a way to distinguish them in the iCal so I can import them into my PHP functions and not mix events that exist but are marked as available with events marked as busy ?

Answer 1

There should be a difference in the value for TRANSP.

https://www.rfc-editor.org/rfc/rfc5545#section-3.8.2.7