Super stupid simple rack app to make livereload work

config.ru

class App
  def initialize(settings = {})
    @defaults = {:root_path => ".", :type => "text/plain", :file => "index.html"}
    @defaults.merge(settings)
  end

  def call(env)
    file = env['REQUEST_PATH'] == '/'? @defaults[:file] : env['REQUEST_PATH']
    [
      200,
      {
        "Content-Type" => type(file)
      },
      read(file)
    ]
  end

  def read(file)
    File.readlines(File.join(File.expand_path(@defaults[:root_path]), file))
  end

  def type(file)
    content_types[File.extname(file)] || @defaults[:type]
  end

  def content_types
    {
      ".html" => "text/html",
      ".css"  => "text/css",
      ".js"   => "application/javascript",
      ".png"  => "image/png",
      ".jpg"  => "image/jpeg",
    }
  end
end

run App.new