Handling Phone Authentication using FirebaseUI and SwiftUI - swift

Question

I am attempting to use the FirebaseUI pre-built phone authentication screen to request a verification code. I am using SwiftUI, so a lot of the Firebase documentation is outdated, but I've gotten most of it working. To be explicit: I can open the phone Auth UI, type in my phone number, and input the verification code.
Where I'm currently having an issue is the part in which they tell you to receive the user info by using:
func authUI(_ authUI: FUIAuth, didSignInWith user: FIRUser?, error: Error?) {
// handle user and error as necessary
}
It says to put this in your FUIAuthDelegate. However I do not have an FUIAuthDelegate, and do not know if this is outdated, or something I'm lacking.
How I currently have it set up, is using some of Peter Friese's answer regarding the new SwiftUI 2.0 Lifecycle.
Where am I supposed to receive the Firebase User information in this new lifecycle? I have tried to make my AppDelegate an FUIAuthDelegate and add the "authUI" function into it, and that didn't work. I have also tried to add an "authUI" function to my LoginView struct, and that didn't work either.
Please see below for a more in-depth look at my code:
///testApp.swift
import SwiftUI
import Firebase
import FirebaseUI
class AppDelegate: NSObject, UIApplicationDelegate {
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
FirebaseApp.configure()
print("App Starting Up...")
return true
}
func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
print("Registered for remote notifications...")
Auth.auth().setAPNSToken(deviceToken, type: .sandbox)
}
func application(_ app: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any] = [:]) -> Bool {
if Auth.auth().canHandle(url){
return true
}
print("URL Error - oops")
return true
}
func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: #escaping(UIBackgroundFetchResult) -> Void) {
if Auth.auth().canHandleNotification(userInfo) {
print("Handling Notification")
completionHandler(.noData)
return
}
return
}
}
#main
struct testApp: App {
#UIApplicationDelegateAdaptor(AppDelegate.self) var delegate
var body: some Scene {
WindowGroup {
AnyView(LoginView())
}
}
}
And my LoginView:
///LoginView.swift
import SwiftUI
import Firebase
import FirebaseAuth
import FirebaseUI
struct LoginView: View {
#State var verified: Int? = nil
var body: some View {
NavigationView {
NavigationLink(destination: LoggedInView(), tag: 1, selection: $verified) {
Button(action: {
login()
}
}
}
}
func login() {
let authUI = FUIAuth.defaultAuthUI()!
let providers: [FUIAuthProvider] = [FUIPhoneAuth(authUI: FUIAuth.defaultAuthUI()!)]
authUI.providers = providers
let authViewController = authUI.authViewController()
guard let windowScene = UIApplication.shared.connectedScenes.first as? UIWindowScene else {return}
guard let rootViewController = windowScene.windoes.first?.rootViewController else {return}
Auth.auth().settings?.isAppVerificationDisabledForTesting = true
rootViewController.present(authViewController, animated: true, completion: nil)
}
}
I am currently testing on the xcode simulator, and using a dummy account from my firebase console.
If you have any questions, please feel free to ask and I will do my best to clarify. Any help would be much appreciated. Thanks!