confirmation_helper.rb

module ConfirmationHelper
  extend ActiveSupport::Concern

  include AuthHelper

  included do
    alias_method_chain :sign_out, :confirmation_request_clear
  end

  module InstanceMethods

    def sign_out_with_confirmation_request_clear
      sign_out_without_confirmation_request_clear
      clear_provider_confirmation_request
    end

    def request_provider_confirmation(user, provider, data)
      session[:provider] = {
        :user_id => user.id,
        :name => provider,
        :uid => uid(data)
      }
    end

    def requested_provider_confirmation?(user)
      if p_data = session[:provider]
        p_data[:user_id] == user.id && p_data[:name] && p_data[:uid]
      end
    end

    def clear_provider_confirmation_request
      session[:provider] = nil
    end

    def provider_confirmation_requestor
      if p_data = session[:provider]
        p_data[:user_id]
      end
    end

    def provider_confirm_data
      {
        'uid' => session[:provider][:uid]
      }
    end

    def provider_name
      session[:provider][:name]
    end

    def uid(data)
      data.fetch('uid')
    end
  end
end