module Pagy::Frontend

def pagy_nav(pagy, id: nil, aria_label: nil, **vars)
  id = %( id="#{id}") if id
  a  = pagy_anchor(pagy, **vars)
  html = %(<nav#{id} class="pagy nav" #{nav_aria_label(pagy, aria_label:)}>#{
             prev_a(pagy, a)})
  pagy.series(**vars).each do |item| # series example: [1, :gap, 7, 8, "9", 10, 11, :gap, 36]
    html << case item
            when Integer
              a.(item)
            when String
              %(<a role="link" aria-disabled="true" aria-current="page" class="current">#{pagy.label_for(item)}</a>)
            when :gap
              %(<a role="link" aria-disabled="true" class="gap">#{pagy_t('pagy.gap')}</a>)
            else
              raise InternalError, "expected item types in series to be Integer, String or :gap; got #{item.inspect}"
            end
  end
  html << %(#{next_a(pagy, a)}</nav>)
end