module BoardHelper
  def discussion_in_css(posts, depth=1, output="", last_post=false)
    post = posts.first
    responses = posts[1..-1]

    highlight = (post.id.to_s == @highlight) ? " highlight" : ""
    if @last_post_id && @last_post_id.to_i-@new_posts < post.id
      newpost = last_post ? " newlastpost" : " newpost"
    else
      newpost = ''
    end 

    output << "<div class='post#{highlight}#{newpost}'
                    title='Posted: #{format_timestamp post.created}'>"

    if depth < 10
      output << link_to('&#x21AA;',
                        {:action => "reply",
                          :id => post},
                        {:class => 'newthread',
                          :title => 'Respond on the right'})
    end

    if post.sage == "1"
      output << "<span class='sage' title='Sage'>&#x25c8;</span>"
    end

    if post.author?
      output << "<span class='author'>#{post.author}"
      if post.tripcode?
        output << "&#x25AA;<span class='tripcode'>#{post.tripcode}</span>"  # 25c6
      end
      output << "</span>"
    end

    output << post.to_html

    if depth > 1 && last_post
      output << link_to('&#x2193;',
                        {:action => "reply",
                          :id => post.parent},
                        {:class => 'reply',
                          :title => 'Respond below'})
    end

    output << "</div>"

    unless responses.empty?
      output << "<div class='responses'>"
      responses.each_with_index { |r, i|
        discussion_in_css r, depth+1, output, i == responses.size-1
      }
      output << "</div>"
    end

    output
  end

  def format_timestamp(time)
    time.strftime("%d%b%Y %H:%M:%S").downcase
  end
end