require 'rubygems'
require 'uv'
require 'rdiscount'
require 'hpricot'

desc "Show avaliable sintaxes"
task :sintaxes do
  puts Uv.syntaxes.join("\n")
end

desc "Show avaliable themes"
task :themes do
  puts Uv.themes.join("\n")
end

desc "Copy css theme files"
task :copy_themes do
  Uv.copy_files "xhtml", ARGV[1] || File.dirname(__FILE__)
end

desc "Convert to Markdown and highlight"
task :convert do
  file_name = ARGV[1]
  new_file_name = "#{file_name}.html"

  input = File.read(file_name)
  output = File.new(new_file_name, "w")

  html = Markdown.new(input).to_html
  doc = Hpricot(html)

  nodes = doc.search("pre > code")

  nodes.each do |node|
    inner_text = node.inner_text.sub(/\s*:::([\w-]+)\s*$/,'')
    language = $1 || "javascript"

    puts "Found <pre> with #{language} code"

    themed = Uv.parse(inner_text, "xhtml", language, false, "twilight")
    node.parent.swap(themed)
  end

  output << doc
  output.flush and output.close
  puts "=> Generated #{new_file_name}"
end