Apple swift ios sign in snippet

YourClass.swift

// At the top of the file
import AuthenticationServices
// ...

@objc
  func appleSignIn(resolve: RCTPromiseResolveBlock, reject: RCTPromiseRejectBlock) {
    if #available(iOS 13.0, *) {
      let appleIDProvider = ASAuthorizationAppleIDProvider()
      let request = appleIDProvider.createRequest()
      request.requestedScopes = [.fullName, .email]
      let authorizationController = ASAuthorizationController(authorizationRequests: [request])
      authorizationController.delegate = self as? ASAuthorizationControllerDelegate
      authorizationController.performRequests()
    } else {
      // Fallback on earlier versions
    }
  }
  
  @available(iOS 13.0, *)
  func authorizationController(controller: ASAuthorizationController,
                               didCompleteWithAuthorization authorization: ASAuthorization) {
  if let appleIDCredential = authorization.credential as?  ASAuthorizationAppleIDCredential {
    let userIdentifier = appleIDCredential.user
    let fullName = appleIDCredential.fullName
    let email = appleIDCredential.email
    print("User id is \(userIdentifier) , Full Name is \(String(describing: fullName)) , Email id is \(String(describing: email))")
    
    }
  }
  
  @available(iOS 13.0, *)
  func authorizationController(controller: ASAuthorizationController, didCompleteWithError error: Error) {
    print("apple-signin-error: \(error)")
  }