FirebaseUI and SwiftUI LoginG - ios

Question

I´m trying to implement the firebaseUI login in an iOS app using swiftUI.
I´m able to use the main login view, but i can not control the flow after the user was loged on.
This is the code of my "login controller"
import SwiftUI
import FirebaseUI
struct CustomLogin: UIViewControllerRepresentable {
func makeUIViewController(context: Context) -> UIViewController {
let authUI = FUIAuth.defaultAuthUI()
let providers: [FUIAuthProvider] = [
FUIEmailAuth(),
FUIFacebookAuth()
// FUIPhoneAuth(authUI:FUIAuth.defaultAuthUI()),
]
authUI?.providers = providers
let authViewController = authUI?.authViewController()
// let controller = UIViewController()
// authUI!.delegate = self
return authViewController!
}
func updateUIViewController(_ uiViewController: UIViewController, context: Context) {
}
}
struct CustomLogin_Previews: PreviewProvider {
static var previews: some View {
CustomLogin()
}
}
I can show the login flow by add CustomLogin())to my content view.
how can I manage the call backs after the user has logged on?
The user was created in firebase, but the view don´t update.
if someone has implemented a firebaseUI login with SwiftUI I appreciated it.
Thanks

Answer 1

I was able to implement something that worked based off of your code and some Apple tutorials. Basically, you need to add a coordinator to your UIViewControllerRepresentable. You can add your delegate to the coordinator.
Here's my scratch code that works:
import SwiftUI
import FirebaseUI
import Firebase
public var screenWidth: CGFloat {
return UIScreen.main.bounds.width
}
public var screenHeight: CGFloat {
return UIScreen.main.bounds.height
}
struct LoginView : View {
#State private var viewState = CGSize(width: 0, height: screenHeight)
#State private var MainviewState = CGSize.zero
var body : some View {
ZStack {
CustomLoginViewController { (error) in
if error == nil {
self.status()
}
}.offset(y: self.MainviewState.height).animation(.spring())
MainView().environmentObject(DataStore()).offset(y: self.viewState.height).animation(.spring())
}
}
func status() {
self.viewState = CGSize(width: 0, height: 0)
self.MainviewState = CGSize(width: 0, height: screenHeight)
}
}
struct LoginView_Previews : PreviewProvider {
static var previews : some View {
LoginView()
}
}
struct CustomLoginViewController : UIViewControllerRepresentable {
var dismiss : (_ error : Error? ) -> Void
func makeCoordinator() -> CustomLoginViewController.Coordinator {
Coordinator(self)
}
func makeUIViewController(context: Context) -> UIViewController
{
let authUI = FUIAuth.defaultAuthUI()
let providers : [FUIAuthProvider] = [
FUIEmailAuth(),
FUIGoogleAuth(),
FUIOAuth.appleAuthProvider()
]
authUI?.providers = providers
authUI?.delegate = context.coordinator
let authViewController = authUI?.authViewController()
return authViewController!
}
func updateUIViewController(_ uiViewController: UIViewController, context: UIViewControllerRepresentableContext<CustomLoginViewController>)
{
}
//coordinator
class Coordinator : NSObject, FUIAuthDelegate {
var parent : CustomLoginViewController
init(_ customLoginViewController : CustomLoginViewController) {
self.parent = customLoginViewController
}
// MARK: FUIAuthDelegate
func authUI(_ authUI: FUIAuth, didSignInWith authDataResult: AuthDataResult?, error: Error?)
{
if let error = error {
parent.dismiss(error)
}
else {
parent.dismiss(nil)
}
}
func authUI(_ authUI: FUIAuth, didFinish operation: FUIAccountSettingsOperationType, error: Error?)
{
}
}
}