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
  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
  answer
end