func application()

in FriendlyPix/AppDelegate.swift [48:92]
37 lines of code
6 McCabe index (conditional complexity)

  func application(_ application: UIApplication, didFinishLaunchingWithOptions
    launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
    FirebaseApp.configure()
    Messaging.messaging().delegate = self
    if let uid = Auth.auth().currentUser?.uid {
      blockedRef = database.reference(withPath: "blocked/\(uid)")
      blockingRef = database.reference(withPath: "blocking/\(uid)")
      observeBlocks()
    }

    if #available(iOS 10.0, *) {
      // For iOS 10 display notification (sent via APNS)
      UNUserNotificationCenter.current().delegate = self

      let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound]
      UNUserNotificationCenter.current().requestAuthorization(
        options: authOptions,
        completionHandler: { granted, _ in
          if granted {
            if let uid = Auth.auth().currentUser?.uid {
              self.database.reference(withPath: "people/\(uid)/notificationEnabled").setValue(true)
            } else {
              self.notificationGranted = true
            }
          }
      })
    } else {
      let settings: UIUserNotificationSettings =
        UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil)
      application.registerUserNotificationSettings(settings)
    }

    application.registerForRemoteNotifications()

    let authUI = FUIAuth.defaultAuthUI()
    authUI?.delegate = self
    authUI?.tosurl = kFirebaseTermsOfService
    authUI?.shouldAutoUpgradeAnonymousUsers = true

    let providers: [FUIAuthProvider] = AppDelegate.euroZone ? [FUIAnonymousAuth()] : [FUIGoogleAuth(), FUIAnonymousAuth()]
    //  ((Auth.auth().currentUser != nil) ? [FUIGoogleAuth()] as [FUIAuthProvider] : [FUIGoogleAuth(), FUIAnonymousAuth()//, FUIFacebookAuth
    //] as [FUIAuthProvider])
    authUI?.providers = providers
    return true
  }