class ServiceUser < ActiveRecord::Base

  belongs_to :person
  belongs_to :contact
  belongs_to :service
  belongs_to :invitation

  before_save :attach_local_models
  scope :with_local_people, joins(:person).merge(Person.local)
  scope :with_remote_people, joins(:person).merge(Person.remote)
 

  def already_invited?
    self.invitation_id.present?
  end

  def on_diaspora?
    self.person_id.present?
  end

  def self.username_of_service_user_by_uid(uid)
     if su = ServiceUser.find_by_uid(uid)
      su.username
    else
      nil
    end
  end

  def attach_local_models
    service_for_uid = Services::Facebook.where(:type => service.type.to_s, :uid => self.uid).first
    if !service_for_uid.blank? && (service_for_uid.user.person.profile.searchable)
      self.person = service_for_uid.user.person
    else
      self.person = nil
    end

    if self.person
      self.contact = self.service.user.contact_for(self.person)
    end

    self.invitation = Invitation.where(:sender_id => self.service.user_id,
                                       :service => self.service.provider,
                                       :identifier => self.uid).first
  end
end