module Pagy::CountlessExtra

def pagy_countless(collection, **vars)
  vars[:limit] ||= pagy_get_limit(vars)
  vars[:page]  ||= pagy_get_page(vars)
  pagy = Countless.new(**vars)
  [pagy, pagy_countless_get_items(collection, pagy)]
end

def pagy_countless_get_items(collection, pagy)
  return collection.offset(pagy.offset).limit(pagy.limit) if pagy.vars[:countless_minimal]
  fetched = collection.offset(pagy.offset).limit(pagy.limit + 1).to_a # eager load limit + 1
  pagy.finalize(fetched.size)                                         # finalize the pagy object
  fetched[0, pagy.limit]                                              # ignore eventual extra item
end