module Pagy::UikitExtra

def pagy_uikit_combo_nav_js(pagy, id: nil, aria_label: nil)
  id    = %( id="#{id}") if id
  a     = pagy_anchor(pagy)
  pages = pagy.pages
  page_input = %(<input name="page" type="number" min="1" max="#{pages}" value="#{pagy.page}" aria-current="page" ) <<
               %(style="text-align: center; width: #{pages.to_s.length + 1}rem;">#{JSTools::A_TAG})
  %(<ul#{id} class="pagy-uikit combo-nav-js uk-button-group uk-pagination uk-flex-center" role="navigation" #{
      nav_aria_label(pagy, aria_label:)} #{
      pagy_data(pagy, :combo, pagy_url_for(pagy, PAGE_TOKEN))
    }>#{
      uikit_prev_html(pagy, a)
    }<li><label>#{
      pagy_t('pagy.combo_nav_js', page_input:, pages:)
    }</label></li>#{
      uikit_next_html(pagy, a)
    }</ul>)
end

def pagy_uikit_nav(pagy, id: nil, aria_label: nil, **vars)
  id = %( id="#{id}") if id
  a  = pagy_anchor(pagy)
  html = %(<ul#{id} class="pagy-uikit nav uk-pagination uk-flex-center" role="navigation" #{
            nav_aria_label(pagy, aria_label:)}>#{
            uikit_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>#{a.(item)}</li>)
            when String
              %(<li class="uk-active"><span role="link" aria-current="page" aria-disabled="true">#{
                  pagy.label_for(item)}</span></li>)
            when :gap
              %(<li class="uk-disabled"><span>#{pagy_t 'pagy.gap'}</span></li>)
            else
              raise InternalError, "expected item types in series to be Integer, String or :gap; got #{item.inspect}"
            end
  end
  html << %(#{uikit_next_html(pagy, a)}</ul>)
end

def pagy_uikit_nav_js(pagy, id: nil, aria_label: nil, **vars)
  sequels = pagy.sequels(**vars)
  id      = %( id="#{id}") if id
  a       = pagy_anchor(pagy)
  tokens  = { 'before'  => uikit_prev_html(pagy, a),
              'a'       => %(<li>#{a.(PAGE_TOKEN, LABEL_TOKEN)}</li>),
              'current' => %(<li class="uk-active"><span role="link" aria-current="page" aria-disabled="true">#{
                               LABEL_TOKEN}</span></li>),
              'gap'     => %(<li class="uk-disabled"><span>#{pagy_t 'pagy.gap'}</span></li>),
              'after'   => uikit_next_html(pagy, a) }
  %(<ul#{id} class="#{'pagy-rjs ' if sequels.size > 1}pagy-uikit nav-js uk-pagination uk-flex-center" role="navigation" #{
      nav_aria_label(pagy, aria_label:)} #{
      pagy_data(pagy, :nav, tokens, sequels, pagy.label_sequels(sequels))
    }></ul>)
end

def uikit_next_html(pagy, a)
  span = %(<span uk-pagination-next></span>)
  if (p_next = pagy.next)
    %(<li>#{a.(p_next, span, aria_label: pagy_t('pagy.aria_label.prev'))}</li>)
  else
    %(<li class="uk-disabled"><a role="link" aria-disabled="true" aria-label="#{
        pagy_t('pagy.aria_label.next')}">#{span}</a></li>)
  end
end

def uikit_prev_html(pagy, a)
  span = %(<span uk-pagination-previous></span>)
  if (p_prev = pagy.prev)
    %(<li>#{a.(p_prev, span, aria_label: pagy_t('pagy.aria_label.prev'))}</li>)
  else
    %(<li class="uk-disabled"><a role="link" aria-disabled="true" aria-label="#{
        pagy_t('pagy.aria_label.prev')}">#{span}</a></li>)
  end
end