I've implemented my own AppleSignUpButton. It calls this piece of code to do the actual Apple sigThe spinner just keeps spinning.
When I press cancel this function is called as expected:
func authorizationController(controller _: ASAuthorizationController, didCompleteWithError error: Error) {..}
So my only problem is with this one:
func authorizationController(controller _: ASAuthorizationController, didCompleteWithAuthorization authorization: ASAuthorization) {..}
This is my class that handles Apple Sign Up:
import AuthenticationServices
import CryptoKit
import Firebase
import FirebaseAuth
import Foundation
@objc class AppleAuthProvider: NSObject, AuthProvider {
@Published var loggedInUser: FIRUser?
var completion: ((Result<User, Error>) -> Void)?
private var currentNonce: String?
func signIn(completion: @escaping (Result<User, Error>) -> Void) {
self.completion = completion
startSignInWithAppleFlow()
}
func signOut(completion _: @escaping (Result<Void, Error>) -> Void) {
()
}
func startSignInWithAppleFlow() {
let nonce = randomNonceString()
currentNonce = nonce
let appleIDProvider = ASAuthorizationAppleIDProvider()
let request = appleIDProvider.createRequest()
request.requestedScopes = [.fullName, .email]
request.nonce = sha256(nonce)
let authorizationController = ASAuthorizationController(authorizationRequests: [request])
authorizationController.delegate = self
authorizationController.performRequests()
}
private func randomNonceString(length: Int = 32) -> String {
precondition(length > 0)
let charset: [Character] =
Array("0123456789ABCDEFGHIJKLMNOPQRSTUVXYZabcdefghijklmnopqrstuvwxyz-._")
var result = ""
var remainingLength = length
while remainingLength > 0 {
let randoms: [UInt8] = (0 ..< 16).map { _ in
var random: UInt8 = 0
let errorCode = SecRandomCopyBytes(kSecRandomDefault, 1, &random)
if errorCode != errSecSuccess {
completion?(.failure(fatalError(
"Unable to generate nonce. SecRandomCopyBytes failed with OSStatus \(errorCode)"
)))
}
return random
}
randoms.forEach { random in
if remainingLength == 0 {
return
}
if random < charset.count {
result.append(charset[Int(random)])
remainingLength -= 1
}
}
}
return result
}
private func sha256(_ input: String) -> String {
let inputData = Data(input.utf8)
let hashedData = SHA256.hash(data: inputData)
let hashString = hashedData.compactMap {
String(format: "%02x", $0)
}.joined()
return hashString
}
}
extension AppleAuthProvider: ASAuthorizationControllerDelegate {
func authorizationController(controller _: ASAuthorizationController, didCompleteWithAuthorization authorization: ASAuthorization) {
if let appleIDCredential = authorization.credential as? ASAuthorizationAppleIDCredential {
guard let nonce = currentNonce else {
completion?(.failure(fatalError(
"Invalid state: A login callback was received, but no login request was sent."
)))
return
}
guard let appleIDToken = appleIDCredential.identityToken else {
completion?(.failure(fatalError(
"Unable to fetch identity token"
)))
return
}
guard let idTokenString = String(data: appleIDToken, encoding: .utf8) else {
completion?(.failure(fatalError(
"Unable to serialize token string from data: \(appleIDToken.debugDescription)"
)))
return
}
// Initialize a Firebase credential.
let credential = OAuthProvider.credential(withProviderID: "apple.com",
idToken: idTokenString,
rawNonce: nonce)
// Sign in with Firebase.
Auth.auth().signIn(with: credential) { [weak self] _, error in
if let error = error {
self?.completion?(.failure(error))
}
// User is signed in to Firebase with Apple.
// ...
}
}
}
func authorizationController(controller _: ASAuthorizationController, didCompleteWithError error: Error) {
completion?(.failure(fatalError(
"Sign in with Apple errored: \(error)"
)))
}
}
