ApplicationController.java

package controllers;

import play.inject.Injector;
import play.libs.F;
import play.mvc.Controller;
import play.mvc.Result;
import setupwidget.controllers.SetupController;

import javax.inject.Inject;
import javax.inject.Singleton;

/**
 * Front controller for the {@link HomeController} to enable a widget to set the SPHERE.IO credentials.
 */
@Singleton
public class ApplicationController extends Controller {
    private final Injector injector;
    private final SetupController setupController;

    @Inject
    public ApplicationController(final Injector injector, final SetupController setupController) {
            this.injector = injector;
            this.setupController = setupController;
    }

    public F.Promise<Result> index() {
        return setupController.handleOrFallback(() -> injector.instanceOf(HomeController.class).show());
    }
}