# DoCoMoの時guid=onの付与
class ActionController::Base # :nodoc:
  class_attribute :docomo_guid_mode

  class << self
    def docomo_guid(mode = :docomo)
      include Jpmobile::DocomoGuid

      self.docomo_guid_mode = mode
    end
  end
end

module Jpmobile::DocomoGuid # :nodoc:
  protected

  def default_url_options
    result = super || {}
    return result unless request # for test process
    return result unless apply_add_guid?

    result.merge({ guid: 'ON' })
  end

  # guid=ONを付与すべきか否かを返す
  def apply_add_guid?
    return true if docomo_guid_mode == :always
    return false if docomo_guid_mode == :none

    return false unless request.mobile?
    return false unless request.mobile.is_a?(Jpmobile::Mobile::Docomo)
    return false if not_apply_guid_user_agent?

    if docomo_guid_mode == :valid_ip && !request.mobile.valid_ip?
      return false
    end

    true
  end

  def not_apply_guid_user_agent?
    request.user_agent.match(%r{(?:Googlebot|Y!J-SRD/1\.0|Y!J-MBS/1\.0)})
  end
end
