# == Schema Information
#
# Table name: knowledge_base_faqs
#
#  id              :bigint           not null, primary key
#  account_id      :bigint           not null
#  title           :string           not null
#  content         :text             not null
#  topic_tags      :jsonb            default: []       not null
#  source_filename :string
#  embedding       :vector(1536)
#  created_at      :datetime         not null
#  updated_at      :datetime         not null
#
class KnowledgeBaseFaq < ApplicationRecord
  belongs_to :account
  # pgvector KNN support (matches repo pattern: has_neighbors + nearest_neighbors)
  has_neighbors :embedding, normalize: true

  validates :title, presence: true
  validates :content, presence: true

  # topic_tags stored as jsonb array; expose string-list helpers for import/retrieval.
  def topic_tag_list
    Array(topic_tags)
  end

  def topic_tag_list=(value)
    self.topic_tags = Array(value).map(&:strip).reject(&:blank?)
  end

  scope :for_account, ->(account) { where(account_id: account.id) }
  scope :with_embedding, -> { where.not(embedding: nil) }
end