module Quandl
module Command
class Task

module Clientable
  
  extend ActiveSupport::Concern

  included do
  end
  
  module ClassMethods
    
    def authenticated_users_only!
      before_execute :authenticated_users_only!
    end
  
    def warn_unauthenticated_users
      before_execute :warn_unauthenticated_users
    end
    
    def autoload_quandl_client
      before_execute :autoload_quandl_client
    end
    
  end
  
  def current_user
    @current_user ||= Quandl::Client::User.info
  end
  
  protected
  
  def clear_session!
    @auth_token = nil
    @current_user = nil
    autoload_quandl_client
  end
  
  def authenticated_users_only!
    if auth_token.blank?
      fatal("You must authenticate to use #{self.class.command_name}! 'quandl login' OR --token xyz923")
      false
    end
  end
  
  def warn_unauthenticated_users
    error("WARN: Authenticate your requests! 'quandl login' OR --token xyz923") if auth_token.blank?
  end
  
  def autoload_quandl_client
    require 'thread/pool'
    require 'quandl/format'
    require 'quandl/command/client_ext'
    Quandl::Client.use( quandl_url )
    Quandl::Client.token = auth_token
    Quandl::Client.request_source = 'quandl_command'
    Quandl::Client.request_version = Quandl::Command::VERSION
  end
  
end

end
end
end