hey guys ive out together a skeleton that i always have good use on every new project of mine. Hope you guys find it helpful and im open for any opinions.
Instantiating a Controller and using it's methods outside the dispatch loop is an anti-pattern... It does not cause any troubles atm, but later on, you might run into problems, because the controller was not instantiated by the dispatcher.
I would create a Component or a Plugin to handle the language settings, and expose that through the API controller.