Single-page module for Yii2

What is the best way to create a single page module for Yii2?

For example using Ember, I will have index.html and assets folder to publish.

I see two ways, one would be to just put the application under web accessible folder, it will work fine. But what if i want to check access to the application using existing RBAC?

Another way would be to create a module and in default controller have something like

return $this->renderFile('@path/to/index.html');

And load all assets with Asset Bundle.

The problem with this approach is that i will not know the folder where assets will be loaded (it can be solved with afterCopy callback or something, but all this doesn't look nice at all).

Please advise.