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path: root/app/models/identity.rb
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class Identity < ActiveRecord::Base
  include Sortable
  include CaseSensitivity

  belongs_to :user

  validates :provider, presence: true
  validates :extern_uid, allow_blank: true, uniqueness: { scope: :provider, case_sensitive: false }
  validates :user_id, uniqueness: { scope: :provider }

  before_save :ensure_normalized_extern_uid, if: :extern_uid_changed?
  after_destroy :clear_user_synced_attributes, if: :user_synced_attributes_metadata_from_provider?

  scope :with_provider, ->(provider) { where(provider: provider) }
  scope :with_extern_uid, ->(provider, extern_uid) do
    iwhere(extern_uid: normalize_uid(provider, extern_uid)).with_provider(provider)
  end

  def ldap?
    Gitlab::Auth::OAuth::Provider.ldap_provider?(provider)
  end

  def self.normalize_uid(provider, uid)
    if Gitlab::Auth::OAuth::Provider.ldap_provider?(provider)
      Gitlab::Auth::LDAP::Person.normalize_dn(uid)
    else
      uid.to_s
    end
  end

  private

  def ensure_normalized_extern_uid
    return if extern_uid.nil?

    self.extern_uid = Identity.normalize_uid(self.provider, self.extern_uid)
  end

  def user_synced_attributes_metadata_from_provider?
    user.user_synced_attributes_metadata&.provider == provider
  end

  def clear_user_synced_attributes
    user.user_synced_attributes_metadata&.destroy
  end
end