# This is broken, document.write is only allowed on load
# See: http://stackoverflow.com/questions/9154026/jquery-dynamically-load-a-gist-embed
module Onebox
  module Engine
    class GithubGistOnebox
      include Engine

      matches_regexp Regexp.new("^http(?:s)?://gist\\.(?:(?:\\w)+\\.)?(github)\\.com(?:/)?")

      def url
        "https://api.github.com/gists/#{match[:sha]}"
      end

      def to_html
        "<script src=\"//gist.github.com/#{match[:sha]}.js\"></script>"
      end

      private

      def data
        { sha: match[:sha], title: match[:sha], link: @url }
      end

      def match
        @match ||= @url.match(%r{gist\.github\.com/([^/]+/)?(?<sha>[0-9a-f]+)})
      end

    end
  end
end