public LoginViewModel()
{
    Ok = ReactiveCommand.Create(ReturnUser, isEnabled);
    Cancel = ReactiveCommand.Create(ExitProgram, isEnabled);
    ReturnCreateNewUser = ReactiveCommand.Create(CreateNewUser, isEnabled);
    ForgotPassword = ReactiveCommand.Create(ReturnForgotPassword, isEnabled);
}

internal static void ExitProgram() => Environment.Exit(0);

internal static void ReturnForgotPassword()
{
    MainWindowViewModel mainWindow = new();
    mainWindow.ShowForgotPassword();
}

internal static void CreateNewUser()
{
    MainWindowViewModel mainWindow = new();
    mainWindow.CreateNewUser();
}

public UserModel ReturnUser()
{
    NewUser.Username = Username;
    NewUser.Password = Password;

    bool canReturn = RunChecks();

    if (canReturn)
    {
        return NewUser;
    }

    return new UserModel();
}
public ReactiveCommand<Unit, UserModel> Ok { get; }
public ReactiveCommand<Unit, Unit> Cancel { get; }
public ReactiveCommand<Unit, Unit> ReturnCreateNewUser { get; }

public ReactiveCommand<Unit, Unit> ForgotPassword { get; }