PwnedPasswords（泄露密码）

class ViewController: UIViewController {

  @IBOutlet weak var textField: UITextField!

  @IBAction func buttonDidPress(_ sender: Any) {
    guard let text = textField.text else { return }
    let client = PwnedPasswords()

    client.check(text) { occurences, error in
      guard error == nil else {
        print(error)
        return
      }
      
      if let occurences = occurences {
        if occurences > 0 {
          print("🛑 The password you entered has been in a breach")
        } else {
          print("✅ The password you entered was not found")
        }
      }
    }
  }
}