class LicenseAcceptance::Strategy::Prompt

def ask(output, c, s, persist_callback)
  logger.debug("Attempting to request interactive prompt on TTY")
  prompt = TTY::Prompt.new(track_history: false, active_color: :bold, interrupt: :exit, output: output)
  answer = "no"
  begin
    Timeout::timeout(60, PromptTimeout) do
      answer = prompt.ask(">") do |q|
        q.modify :down, :trim
        q.required true
        q.messages[:required?] = "You must enter 'yes' or 'no'"
        q.validate /^\s*(yes|no)\s*$/i
        q.messages[:valid?] = "You must enter 'yes' or 'no'"
      end
    end
  rescue PromptTimeout
    prompt.unsubscribe(prompt.reader)
    output.puts "Prompt timed out. Use non-interactive flags or enter an answer within 60 seconds."
  end
  if answer == "yes"
    output.puts
    output.puts "Persisting #{c} product license#{s}..."
    errs = persist_callback.call
    if errs.empty?
      output.puts "#{CHECK} #{c} product license#{s} persisted.\n\n"
    else
      output.puts <<~EOM
      #{CHECK} #{c} product license#{s} accepted.
      Could not persist acceptance:\n\t* #{errs.map(&:message).join("\n\t* ")}
      EOM
    end
    return true
  end
  return false
end

def initialize(config)
  @output = config.output
end

def request(missing_licenses, &persist_callback)
  logger.debug("Requesting a license for #{missing_licenses.map(&:id)}")
  c = missing_licenses.size
  s = c > 1 ? "s": ""
  acceptance_question = "Do you accept the #{c} product license#{s} (#{YES}/no)?"
  output.puts <<~EOM
  #{BORDER}
              Chef License Acceptance
  Before you can continue, #{c} product license#{s}
  must be accepted. View the license at
  https://www.chef.io/end-user-license-agreement/
  License#{s} that need accepting:
    * #{missing_licenses.map(&:pretty_name).join("\n  * ")}
  #{acceptance_question}
  EOM
  if ask(output, c, s, persist_callback)
    output.puts BORDER
    return true
  end
  output.puts <<~EOM
  If you do not accept this license you will
  not be able to use Chef products.
  #{acceptance_question}
  EOM
  answer = ask(output, c, s, persist_callback)
  if answer != "yes"
    output.puts BORDER
  end
  return answer
end