# Apt-Cacher NG is a caching proxy for software packages which are downloaded by
# Unix/Linux system distribution mechanisms from mirror servers accessible via HTTP.
module VagrantPlugins
  module Cachier
    class Bucket
      class AptCacher < Bucket
        def self.capability
          :apt_cacher_dir
        end

        def install
          machine = @env[:machine]
          guest   = machine.guest

          if guest.capability?(:apt_cacher_dir)
            if machine.config.cache.enable_nfs
              guest_path = guest.capability(:apt_cacher_dir)

              @env[:cache_dirs] << guest_path

              machine.communicate.tap do |comm|
                comm.execute("mkdir -p /tmp/vagrant-cache/#{@name}")
                unless comm.test("test -L #{guest_path}")
                  comm.sudo("rm -rf #{guest_path}")
                  comm.sudo("mkdir -p `dirname #{guest_path}`")
                  comm.sudo("ln -s /tmp/vagrant-cache/#{@name} #{guest_path}")
                end
              end
            else
              @env[:ui].info I18n.t('vagrant_cachier.nfs_required', bucket: 'apt-cacher')
            end
          else
            @env[:ui].info I18n.t('vagrant_cachier.skipping_bucket', bucket: 'apt-cacher')
          end
        end
      end
    end
  end
end