class Bundler::SSLCerts::CertificateManager

def self.update_from!(rubygems_path)
  new(rubygems_path).update!
end

def certificates_in(path)
  Dir[File.join(path, "*.pem")].sort
end

def initialize(rubygems_path)
  rubygems_certs = File.join(rubygems_path, 'lib/rubygems/ssl_certs')
  @rubygems_certs = certificates_in(rubygems_certs)
  @bundler_cert_path = File.expand_path("..", __FILE__)
  @bundler_certs = certificates_in(bundler_cert_path)
end

def up_to_date?
  bundler_certs.zip(rubygems_certs).all? do |bc, rc|
    File.basename(bc) == File.basename(rc) && FileUtils.compare_file(bc, rc)
  end
end

def update!
  return if up_to_date?
  FileUtils.rm bundler_certs
  FileUtils.cp rubygems_certs, bundler_cert_path
end