# CSSO complains when using node as an execJS runtime, but we currently have
# to due to a bug in therubyracer (or maybe execJS?)

require 'execjs'

module Csso
  class JsLib

    def initialize
      spec = Gem::Specification.find_by_name("csso-rails")
      path = spec.gem_dir

      lib = File.read(File.expand_path(path + "/" + CSSO_JS_LIB, File.dirname(__FILE__)))
      unless @csso = ExecJS.runtime.compile(lib)
        raise 'cannot compile or what?'
      end
    end

    def compress css, structural_optimization=true
      @csso.call("do_compression", css, !structural_optimization)
    end

  end
end