How to model indirect relationship that depend on an attribute?

[juanjoDiaz]

Hi,

Thanks for the great work on OpenFGA!

I'm evaluating adopting it and there is one particular use case that I can figure out: How to model indirect relationships that depend on an attribute?

Let's use the Google Drive example: you have users, folders and documents.
By default, when you have access to a folder, you have access to all the folders inside it.
I want to have a setting at folder level to enable visibility of subfolders, i.e.
Folder A is inside folder B and folder B has "subfolder visibility" set to true.
User X has access to Folder B. Thus, user X has access to folder A.
Folder B "subfolder visibility" set to false.
User X has access to folder B contents but it has no access to folder A contents.

Could this be modelled with the current version of OpenFGA?