class Jekyll::Generators::SitemapGenerator2

# File _plugins/sitemap.rb, line 25
def _build(site)
  # We import later in case we don't need to bother importing in the first place.
  require 'date'
  require './_plugins/gtn'

  Jekyll.logger.info '[GTN/Sitemap] Generating'
  result = '<?xml version="1.0" encoding="UTF-8"?>'
  result += '<urlset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" ' \
            'xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9 ' \
            'http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd" ' \
            'xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">'

  subset_pages = site.pages
    .reject { |t| t.path =~ /ipynb$/ || t.path =~ /api\/ga4gh\/trs\/v2/}
    .reject { |t| t.data.fetch('layout', 'page') =~ /external/}
    .reject { |t| t.data.fetch('hands_on', '') == 'external'}

  subset_pages.each do |t|
    begin
      d = Gtn::ModificationTimes.obtain_time(t.path)
      d.format = '%FT%T%:z'
      formatted_date = d.to_s
    rescue StandardError
      d = Time.new
      formatted_date = d.strftime('%FT%T%:z')
    end

    result += "<url><loc>#{site.config['url'] + site.config['baseurl'] + t.url}</loc>" \
              "<lastmod>#{formatted_date}</lastmod></url>"
  end
  result += '</urlset>'

  page2 = PageWithoutAFile.new(site, '', '.', 'sitemap.xml')
  page2.content = result
  site.pages << page2
end

# File _plugins/sitemap.rb, line 17
def generate(site)
  if Jekyll.env == 'production'
    _build(site)
  else
    Jekyll.logger.info '[GTN/Sitemap] Skipping in development mode'
  end
end