require 'date'

module Gentoo
  class DevawayGenerator < Jekyll::Generator
    DEVAWAY_XML = '_data/devaway.xml'
    # ... @ yyyy/mm/dd HH:MMZ
    DATE_REGEXP = /@ (\d+)\/(\d+)\/(\d+) (\d+):(\d)+Z$/

    def generate(site)
      data = Nokogiri::XML(File.open(DEVAWAY_XML))

      site.data['devaway'] ||= {}
      now = Time.now

      data.xpath('/devaway/dev').each do |dev|
        reason = dev.xpath('./reason/text()').first.content
        date = Time.utc(*(DATE_REGEXP.match(reason).captures.map(&:to_i)))
        away_sec = now - date

        site.data['devaway'][dev['nick']] = {
          'reason' => dev.xpath('./reason/text()').first.content,
          'date' =>  date,
          'away_days' => away_sec / 24 / 3600,
        }
      end
    end
  end
end