mastodon/app/models/collection_item.rb

# frozen_string_literal: true

# == Schema Information
#
# Table name: collection_items
#
#  id                        :bigint(8)        not null, primary key
#  activity_uri              :string
#  approval_last_verified_at :datetime
#  approval_uri              :string
#  object_uri                :string
#  position                  :integer          default(1), not null
#  state                     :integer          default("pending"), not null
#  created_at                :datetime         not null
#  updated_at                :datetime         not null
#  account_id                :bigint(8)
#  collection_id             :bigint(8)        not null
#
class CollectionItem < ApplicationRecord
  belongs_to :collection
  belongs_to :account, optional: true

  enum :state,
       { pending: 0, accepted: 1, rejected: 2, revoked: 3 },
       validate: true

  delegate :local?, :remote?, to: :collection

  validates :position, numericality: { only_integer: true, greater_than: 0 }
  validates :activity_uri, presence: true, if: :local_item_with_remote_account?
  validates :approval_uri, absence: true, unless: :local?
  validates :account, presence: true, if: :accepted?
  validates :object_uri, presence: true, if: -> { account.nil? }

  scope :ordered, -> { order(position: :asc) }

  def local_item_with_remote_account?
    local? && account&.remote?
  end
end