Passkeys Demonstration (Signup Process)

AccountManager.swift

import AuthenticationServices
import Foundation
import os
extension NSNotification.Name {
    static let UserSignedIn = Notification.Name("UserSignedInNotification")
    static let ModalSignInSheetCanceled = Notification.Name("ModalSignInSheetCanceledNotification")
}
class AccountManager: NSObject, ASAuthorizationControllerPresentationContextProviding, ASAuthorizationControllerDelegate {
    //To setup backend side, https://quickbirdstudios.com/blog/ios-passkeys/
    //Define your connected domain
    let domain = "example.com"
    var authenticationAnchor: ASPresentationAnchor?
    var isPerformingModalReqest = false
    
    //IN THIS CLASS WE WILL WORK WITH SEVERAL METHODS
    
    //SIGN IN METHOD 
    func signInWith(anchor: ASPresentationAnchor, preferImmediatelyAvailableCredentials: Bool) {
       //SIGN IN METHOD IMPLEMENTATION
    }
    
    //SIGN UP METHOD
    func signUpWith(userName: String, anchor: ASPresentationAnchor) {
        //SIGN UP METHOD IMPLEMENTATION
    }
    
    func authorizationController(controller: ASAuthorizationController, didCompleteWithAuthorization authorization: ASAuthorization) {
        ///TO HANDLE CALLBACKS ON [REGISTRATION], [SIGN IN], [PROVIDED VIA PASSWORD]
    }

    func authorizationController(controller: ASAuthorizationController, didCompleteWithError error: Error) {
        //TO HANDLE ERROR CALLBACKS 
    }
    
    //OTHER METHODS
    func presentationAnchor(for controller: ASAuthorizationController) -> ASPresentationAnchor {
        return authenticationAnchor!
    }

    func didFinishSignIn() {
        NotificationCenter.default.post(name: .UserSignedIn, object: nil)
    }

    func didCancelModalSheet() {
        NotificationCenter.default.post(name: .ModalSignInSheetCanceled, object: nil)
    }
}