Legion Invasion related API?

[Layback_]

Hi all,

I got a super quick and simple question.

Would there be any Invasion related API?

The reason that I'm asking this is to create myself an invasion timer to track:

• Where the current invasion is located
• When the current invasion ends
• When the next invasion starts
• Where the next invasion locates (if possible, as I'm guessing that location is selected randomly, but sequentially)

Unfortunately, I could've not found anything related to Legion Invasion from WoW UI Source, XML archive or wowpedia.
(There was only C_Garrison.IsInvasionAvailable, which seems to return boolean value for Garrison Invasion in WoD)

So, could I get some any advice on how I could achieve those four features?

Thank you!