sync_assets.rake

# encoding: utf-8
require 'rubygems'
require 'cloudfiles'
require 'colored'
require 'yaml'

desc "refresh precompiled assets in the rackspace CloudFiles CDN"
task :sync_assets do
  root = Padrino.root
  config = YAML.load_file(File.join(root, 'config', 'assets.yml'))

  cf = CloudFiles::Connection.new(
    :username => config[:cdn][:username],
    :api_key => config[:cdn][:api_key]
  )

  config[:assets].each do |asset|
    asset_container = cf.container(asset[:container])

    dir = File.join(root, asset[:path])

    # Get File Lists
    cdn_files = asset_container.objects
    local_files = asset[:types].map do |type|
      Dir[File.join(dir, "*#{type}")]
    end.flatten

    to_delete = cdn_files.reject { |i| local_files.include?(File.join(dir, i).to_s)}
    to_upload = local_files.reject { |i| cdn_files.include?(i[dir.to_s.length+1..-1]) }

    # Upload fresh assets
    to_upload.each do |f|
      begin
        unless FileTest.directory?(f) # ignore directories
          relative_path = f[dir.to_s.length+1..-1]
          type = Rack::Mime.mime_type(File.extname(relative_path))
          puts "    ↑".green + " Uploading -> #{relative_path} [#{type}]"
          file = open(f)
          object = asset_container.create_object relative_path, true
          object.write file
          object.content_type = type 
          file.close
        end
      rescue => e
        logger.error e.message
        logger.error e.backtrace.join("\n")
      end
    end

    # Delete files that no longer exist
    to_delete.each do |f|
      begin
        if asset_container.delete_object(f)
          puts "    ☓".red + " Deleted   -> #{f}"
        end
      rescue => e
        logger.error e.message
        logger.error e.backtrace.join("\n")
      end
    end

    puts "    Deleted " + to_delete.size.to_s + " file(s)"
    puts "    Uploaded " + to_upload.size.to_s + " file(s)"
  end
end