gretel.rb

# frozen_string_literal: true

module Gretel
  module ViewHelpers
    delegate :breadcrumbs_json_ld, to: :gretel_renderer
  end

  class Renderer
    # rubocop:disable Rails/OutputSafety
    def breadcrumbs_json_ld
      {
        "@context": 'http://schema.org/',
        "@type": 'BreadcrumbList',
        "itemListElement": links.map.with_index do |link, i|
          {
            '@type': 'ListItem',
            'position': i + 1,
            'item': {
              '@id': "#{root_url.chop}#{link}",
              'name': link.text
            }
          }
        end
      }.to_json.html_safe
    end
    # rubocop:enable Rails/OutputSafety
  end
end

.breadcrumbs
          == breadcrumbs style: :bootstrap
          = tag.script(breadcrumbs_json_ld, type: 'application/ld+json')