SignInWithAppleButton.swift

import SwiftUI
import AuthenticationServices

final class SignInWithAppleButton: UIViewRepresentable {
  let buttonType: ASAuthorizationAppleIDButton.ButtonType
  let style: ASAuthorizationAppleIDButton.Style
  let cornerRadius: CGFloat?

  init(
    buttonType: ASAuthorizationAppleIDButton.ButtonType = .signIn,
    style: ASAuthorizationAppleIDButton.Style = .black,
    cornerRadius: CGFloat? = nil
  ) {
    self.buttonType = buttonType
    self.style = style
    self.cornerRadius = cornerRadius
  }

  func makeUIView(context: Context) -> ASAuthorizationAppleIDButton {
    let button = ASAuthorizationAppleIDButton(
      type: self.buttonType, style: self.style
    )
    if let cornerRadius = self.cornerRadius {
      button.cornerRadius = cornerRadius
    }
    return button
  }

  func updateUIView(_ uiView: ASAuthorizationAppleIDButton, context: Context) {
  }
}