require 'flannel/html_transformable'

module Flannel

  # HtmlFormatter is responsible for formatting text blocks as html
  class HtmlFormatter
    include Flannel::HtmlTransformable

    def initialize
      @tags ={:preformatted => "pre",
              :feed => "ul",
              :list => "ul",
              :dlist => "dl",
              :header_one => "h1", #new style
              :header_two => "h2",
              :header_three => "h3",
              :header_four => "h4",
              :header_five => "h5",
              :header_six => "h6",
              :paragraph => "p",
              :blockquote => "blockquote"}
    end

    def do text, style, id=nil
      @text = text
      @style = style
      @id = id

      html = build_html
      html.force_encoding("UTF-8")
      html
    end

    def build_html
      case @style

      when :preformatted
        html =  html_escape @text
      when :feed
        html =  parse_feed @text
      when :image
        html =  create_img @text
      else
        html =  build_wiki_links @text
        html =  convert_external_links html

        if @style == :list
          html = format_list html
        end

        if @style == :dlist
          html =  format_dlist html
        end
      end

      wrap(html, @tags[@style], @id)
    end
  end
end