static.rack

VIEW_PATH = 'lib/assets'

namespace :static do
  desc 'Render all resources'
  task :publicate => :environment do
    resources(VIEW_PATH).each do |src, dest|
      html= controller.render_to_string(file:src, layout:'application')
      dirname = File.dirname(dest)
      unless File.directory?(dirname)
        FileUtils.mkdir_p(dirname)
      end
      File.write(dest, html)
    end
  end

  desc 'Remove all resources, generated by publicate task'
  task :clean => :environment do
    resources(VIEW_PATH).each do |src,dest|
      FileUtils.remove_file(dest,true)
    end
  end

  def resources search_path
    search_path = search_path.to_s
    files = Dir["#{search_path}/**/*"]
                .select {|f| !File.directory? f}
                .map{|x| [x, x.gsub(search_path, Rails.root.join('public').to_s)]}
    Hash[files]
  end

  def controller
    ApplicationController.new.tap do |controller|
      controller.request  = ActionDispatch::Request.new( {
         'HTTP_HOST'   =>  'example.com',
         'SCRIPT_NAME' => '',
         'HTTPS'       => Rails.env.development? ? 'off' : 'on',
         'rack.input'  => '' })
      controller.response = ActionDispatch::Response.new
      controller.params = {}
    end
  end
end