ログイン画面

class LoginView:UIViewController {
    
    @IBOutlet weak var emailField: UITextField!
    @IBOutlet weak var passwordField: UITextField!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
    }
    
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        if AuthHelper().uid() != "" {
            dismiss(animated: false, completion: nil)
        }
    }
    
    @IBAction func onLogin(_ sender: Any) {
        AuthHelper().login(email: emailField.text!, password: passwordField.text!, result: {
            success in
            if success {
                self.dismiss(animated: true, completion: nil)
            } else {
                self.showError()
            }
        })
    }
    
    func showError(){
        let dialog = UIAlertController(title: "エラー", message: "メールアドレス、またはパスワードが間違っています。", preferredStyle: .alert)
        dialog.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
        present(dialog, animated: true, completion: nil)
    }
}