module Gitlab
  module Badge
    ##
    # Abstract class for badge metadata
    #
    class Metadata
      include Gitlab::Application.routes.url_helpers
      include ActionView::Helpers::AssetTagHelper
      include ActionView::Helpers::UrlHelper

      def initialize(badge)
        @badge = badge
      end

      def to_html
        link_to(image_tag(image_url, alt: title), link_url)
      end

      def to_markdown
        "[![#{title}](#{image_url})](#{link_url})"
      end

      def title
        raise NotImplementedError
      end

      def image_url
        raise NotImplementedError
      end

      def link_url
        raise NotImplementedError
      end
    end
  end
end
