Creating the same event after removing causes 409 error

Question

I'm writing an app which adds events from our server to user's Google Calendar using API. And I encountered a HTTP 409 Conflict error following this scenario:

1. Create an event with some explicitly defined ID / Events: insert
2. Delete the event / Events: delete
3. Try to create event with the same ID - get the error.

This scenario can come true when:

1. a user exports events from our server.
2. one of the events (say with ID = 1) will be disabled on our server
3. the user exports again the events - this disabled event will removed from user's Google Calendar / API call: delete, eventId = 1
4. the disabled event will be enabled again
5. the user performs export - API insert request will be fired with the same ID = 1 . And error 409 will be raised. / API call: insert, eventId = 1

It seems that an event in fact isn't removed after invoking delete API method. Is there any workaround for this issue?

Answer 1

It turned out that the so-called "delete" operation in fact doesn't delete events, just hides them and changes their status to "canceled". So events continue to exist in Google Calendar.
As a workaround I retrieve deleted entries using "showDeleted" = true option and update them.