class ROTP::CLI

def errors
  if %i[time hmac].include?(options.mode)
    if options.secret.to_s == ''
      red 'You must also specify a --secret. Try --help for help.'
    elsif options.secret.to_s.chars.any? { |c| ROTP::Base32::CHARS.index(c.upcase).nil? }
      red 'Secret must be in RFC4648 Base32 format - http://en.wikipedia.org/wiki/Base32#RFC_4648_Base32_alphabet'
    end
  end
end