class Bullet::Detector::CounterCache

def add_counter_cache(object, associations)
  return unless Bullet.start?
  return unless Bullet.counter_cache_enable?
  return unless object.bullet_primary_key_value
  Bullet.debug(
    'Detector::CounterCache#add_counter_cache',
    "object: #{object.bullet_key}, associations: #{associations}"
  )
  create_notification object.class.to_s, associations if conditions_met?(object, associations)
end

def add_impossible_object(object)
  return unless Bullet.start?
  return unless Bullet.counter_cache_enable?
  return unless object.bullet_primary_key_value
  Bullet.debug('Detector::CounterCache#add_impossible_object', "object: #{object.bullet_key}")
  impossible_objects.add object.bullet_key
end

def add_possible_objects(object_or_objects)
  return unless Bullet.start?
  return unless Bullet.counter_cache_enable?
  objects = Array.wrap(object_or_objects)
  return if objects.map(&:bullet_primary_key_value).compact.empty?
  Bullet.debug(
    'Detector::CounterCache#add_possible_objects',
    "objects: #{objects.map(&:bullet_key).join(', ')}"
  )
  objects.each { |object| possible_objects.add object.bullet_key }
end

def conditions_met?(object, _associations)
  possible_objects.include?(object.bullet_key) && !impossible_objects.include?(object.bullet_key)
end

def create_notification(klazz, associations)
  notify_associations = Array.wrap(associations) - Bullet.get_safelist_associations(:counter_cache, klazz)
  if notify_associations.present?
    notice = Bullet::Notification::CounterCache.new klazz, notify_associations
    Bullet.notification_collector.add notice
  end
end

def impossible_objects
  Thread.current[:bullet_counter_impossible_objects]
end

def possible_objects: () -> Bullet::Registry::Object

def possible_objects
  Thread.current[:bullet_counter_possible_objects]
end