class Doctrine < ApplicationRecord
  belongs_to :document, polymorphic: true, optional: false

  has_many :doctrine_subjects, dependent: :destroy
  has_many :subjects, through: :doctrine_subjects

  has_many :annotations, dependent: :destroy

  validates :content, presence: true
  validates :content_fingerprint, uniqueness: { scope: %i[document_id document_type] }

  before_validation do
    self.content_fingerprint = Digest::SHA256.hexdigest(content)
  end

  def doctrine_subjects
    DoctrineSubject.where(doctrine_id: self.id)
  end

  def subjects
    Cdao::Subject.where(id: doctrine_subjects.map(&:subject_id))
  end

  def subject_ids
    subjects.map(&:id)
  end

  def subject_ids=(ids)
    ids = ids.map(&:to_i)

    ids.each do |subject_id|
      record = DoctrineSubject.find_or_initialize_by(doctrine_id: self.id, subject_id: subject_id)

      next if record.persisted?

      record.save
    end

    DoctrineSubject.where(doctrine_id: self.id).each do |record|
      record.destroy unless ids.member?(record.subject_id)
    end

    subject_ids
  end

  searchable do 
    text :content

    integer :id
    integer :document_id

    integer :subject_ids, multiple: true

    integer :user_ids, multiple: true do
      paper_trail.originator.to_i
    end

    date :created_at
  end
end