@UIApplicationMain
public class AppDelegate: UIResponder, UIApplicationDelegate {

    private var ribsTreeViewer: RIBsTreeViewer? = nil
    
    public func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        let window = UIWindow(frame: UIScreen.main.bounds)
        self.window = window

        let result = RootBuilder(dependency: AppComponent()).build()
        let launchRouter = result.launchRouter
        self.launchRouter = launchRouter
        urlHandler = result.urlHandler
        launchRouter.launch(from: window)
        startRIBsTreeViewer(launchRouter: launchRouter)
        return true
    }
}

// MARK: - RIBsTreeViewer

#if DEBUG
import RIBsTreeViewerClient

extension AppDelegate {
    private func startRIBsTreeViewer(launchRouter: Routing) {
        if #available(iOS 13.0, *) {
            ribsTreeViewer = RIBsTreeViewerImpl.init(router: launchRouter,
                                                     options: [.webSocketURL("ws://0.0.0.0:8080"),
                                                               .monitoringIntervalMillis(1000)])
            ribsTreeViewer?.start()
        } else {
            // RIBsTreeViewer is not supported OS version.
        }
    }
}
#endif