@UIApplicationDelegateAdaptor(AppDelegate.self) var appDelegate

import Foundation
import OneSignalFramework

class AppDelegate: UIResponder, UIApplicationDelegate {

    static var orientationLock = UIInterfaceOrientationMask.all

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
        setup(launchOptions: launchOptions)
        return true
    }

    func application(_ application: UIApplication, supportedInterfaceOrientationsFor window: UIWindow?) -> UIInterfaceOrientationMask {
        return AppDelegate.orientationLock
    }

    func setup(launchOptions: [UIApplication.LaunchOptionsKey: Any]?) {
        OneSignal.initialize("ID", withLaunchOptions: launchOptions)
        OneSignal.Notifications.requestPermission({ accepted in }, fallbackToSettings: true)
    }
}