module InviteOnlySupport

def invitation
  return not_found unless invitation_only?
  return not_found unless params[:key].present?
  return not_found unless invitation_keys.include?(params[:key])
  session[:invitation_key] = params[:key]
  if user_signed_in?
    redirect_to new_account_team_path
  else
    redirect_to new_user_registration_path
  end
end

def not_found
  render file: "#{Rails.root}/public/404.html", layout: false, status: :not_found
end