module Pagy::BootstrapExtra

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