class ReeValidator::ValidatePaging

def call(page:, per_page:, min_per_page:, max_per_page:, error: nil, **opts)
  if page < 1
    error ||= PagingErr.new(
      t('validator.paging.min_page', default_by_locale: :en)
    )
    raise error
  end
  if per_page < min_per_page
    error ||= PagingErr.new(
      t(
        'validator.paging.min_per_page',
        {min_per_page: min_per_page},
        default_by_locale: :en
      )
    )
    raise error
  end
  if per_page > max_per_page
    error ||= PagingErr.new(
      t(
        'validator.paging.max_per_page',
        {max_per_page: max_per_page},
        default_by_locale: :en
      )
    )
    raise error
  end
  max_result_window = opts[:max_result_window]
  if max_result_window && page * per_page > max_result_window
    error ||= PagingErr.new(
      t(
        'validator.paging.max_result_window',
        {max_result_window: max_result_window},
        default_by_locale: :en
      )
    )
    raise error
  end
  true
end