module Pagy::Frontend

def pagy_bulma_nav(pagy)
  link, p_prev, p_next = pagy_link_proc(pagy), pagy.prev, pagy.next
  html = EMPTY + (p_prev ? link.call(p_prev, pagy_t('pagy.nav.prev'), 'class="pagination-previous" aria-label="previous page"')
                         : %(<a class="pagination-previous" disabled>#{pagy_t('pagy.nav.prev')}</a>))
  html << (p_next ? link.call(p_next, pagy_t('pagy.nav.next'), 'class="pagination-next" aria-label="next page"')
                  : %(<a class="pagination-next" disabled>#{pagy_t('pagy.nav.next')}</a>))
  html << '<ul class="pagination-list">'
  pagy.series.each do |item| # series example: [1, :gap, 7, 8, "9", 10, 11, :gap, 36]
    html << if    item.is_a?(Integer); %(<li>#{link.call item, item, %(class="pagination-link" aria-label="goto page #{item}") }</li>)                           # page link
            elsif item.is_a?(String) ; %(<li>#{link.call item, item, %(class="pagination-link is-current" aria-label="page #{item}" aria-current="page")}</li>)  # active page
            elsif item == :gap       ; %(<li><span class="pagination-ellipsis">#{pagy_t('pagy.nav.gap')}</span></li>)                                            # page gap
            end
  end
  html << '</ul>'
  %(<nav class="pagy-bulma-nav pagination is-centered" role="navigation" aria-label="pagination">#{html}</nav>)
end