userManager.currentUser was called too often. I was not able to prove that a bug is related to it but i think it may fix some hidden bugs.
CurrentUserProviderImpl is now used throughout the code to access the current user.
userManager.currentUser is only used from CurrentUserProviderImpl whenever the _currentUser was null (should only happen on app startup)
To avoid multiple initialization of CurrentUserProviderImpl it was changed to be a @Singleton
The handling should soon be replaced with coroutine flows. However for the v21.0.0 release it's still done with RxJava to avoid bugs.
Signed-off-by: Marcel Hibbe <dev@mhibbe.de>
To support federated rooms, capabilities have to be checked from the room which now also has capabilities.
If room is not federated, capabilities fromuser are still checked.
This is why CapabilitiesUtil had to be refactored to accept SpreedCapabilities which can come from room or user.
Other than that, many other changes were made as a result of this change.
Signed-off-by: Marcel Hibbe <dev@mhibbe.de>
