require './plugins/pygments_code'
 
 module BacktickCodeBlock
   include HighlightCode

   AllOptions = /([^\s]+)\s+(.+?)(https?:\/\/\S+|\/\S+)\s*(.+)?/i

   LangCaption = /([^\s]+)\s*(.+)?/i
   def render_code_block(input)

     @options = nil

     @caption = nil
     @lang = nil
     @url = nil
     @title = nil

     input.gsub(/^`{3} *([^\n]+)?\n(.+?)\n`{3}/m) do

       @options = $1 || ''

       str = $2
 

       if @options =~ AllOptions

         @lang = $1
         @caption = "<figcaption><span>#{$2}</span><a href='#{$3}'>#{$4 || 'link'}</a></figcaption>"

       elsif @options =~ LangCaption

         @lang = $1
         @caption = "<figcaption><span>#{$2}</span></figcaption>"
       end
 

       if str.match(/\A( {4}|\t)/)
         str = str.gsub(/^( {4}|\t)/, '')

       end
       if @lang.nil? || @lang == 'plain'
         code = tableize_code(str.gsub('<','&lt;').gsub('>','&gt;'))

         "<figure class='code'>#{@caption}#{code}</figure>"

       else
         if @lang.include? "-raw"

           raw = "``` #{@options.sub('-raw', '')}\n"

           raw += str
           raw += "\n```\n"
         else
           code = highlight(str, @lang)

           "<figure class='code'>#{@caption}#{code}</figure>"

         end
       end
     end
   end
 end