module Pagy::BulmaExtra

def bulma_prev_next_html(pagy, a)
  html = if (p_prev = pagy.prev)
           a.(p_prev, pagy_t('pagy.prev'), classes: 'pagination-previous', aria_label: pagy_t('pagy.aria_label.prev'))
         else
           %(<a role="link" class="pagination-previous" disabled aria-disabled="true" aria-label="#{
               pagy_t('pagy.aria_label.prev')}">#{pagy_t 'pagy.prev'}</a>)
         end
  html << if (p_next = pagy.next)
            a.(p_next, pagy_t('pagy.next'), classes: 'pagination-next', aria_label: pagy_t('pagy.aria_label.next'))
          else
            %(<a role="link" class="pagination-next" disabled aria-disabled="true" aria-label="#{
                pagy_t('pagy.aria_label.next')}">#{pagy_t('pagy.next')}</a>)
          end
end

def pagy_bulma_combo_nav_js(pagy, id: nil, classes: 'pagy-bulma combo-nav-js pagination is-centered',
                            aria_label: nil, **vars)
  id    = %( id="#{id}") if id
  a     = pagy_anchor(pagy, **vars)
  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; height: 1.7rem; margin:0 0.3rem; ) <<
               %(border: none; border-radius: 4px; padding: 0; font-size: 1.1rem; color: white; ) <<
               %(background-color: #485fc7;">#{JSTools::A_TAG})
  %(<nav#{id} class="#{classes}" #{
      nav_aria_label(pagy, aria_label:)} #{
      pagy_data(pagy, :combo, pagy_url_for(pagy, PAGE_TOKEN, **vars))
    }>#{
      bulma_prev_next_html(pagy, a)
    }<ul class="pagination-list"><li class="pagination-link"><label>#{
       pagy_t('pagy.combo_nav_js', page_input:, pages:)
    }</label></li></ul></nav>)
end

def pagy_bulma_nav(pagy, id: nil, classes: 'pagy-bulma nav pagination is-centered',
                   aria_label: nil, **vars)
  id = %( id="#{id}") if id
  a  = pagy_anchor(pagy, **vars)
  html = %(<nav#{id} class="#{classes}" #{nav_aria_label(pagy, aria_label:)}>)
  html << bulma_prev_next_html(pagy, a)
  html << %(<ul class="pagination-list">)
  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, pagy.label_for(item), classes: 'pagination-link')}</li>)
            when String
              %(<li><a role="link" class="pagination-link is-current" aria-current="page" aria-disabled="true">#{
                  pagy.label_for(item)}</a></li>)
            when :gap
              %(<li><span class="pagination-ellipsis">#{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 << %(</ul></nav>)
end

def pagy_bulma_nav_js(pagy, id: nil, classes: 'pagy-bulma nav-js pagination is-centered',
                      aria_label: nil, **vars)
  sequels = pagy.sequels(**vars)
  id      = %( id="#{id}") if id
  a       = pagy_anchor(pagy, **vars)
  tokens = { 'before'  => %(#{bulma_prev_next_html(pagy, a)}<ul class="pagination-list">),
             'a'       => %(<li>#{a.(PAGE_TOKEN, LABEL_TOKEN, classes: 'pagination-link')}</li>),
             'current' => %(<li><a role="link" class="pagination-link is-current" aria-current="page" aria-disabled="true">#{
                              LABEL_TOKEN}</a></li>),
             'gap'     => %(<li><span class="pagination-ellipsis">#{pagy_t 'pagy.gap'}</span></li>),
             'after'   => '</ul>' }
  %(<nav#{id} class="#{'pagy-rjs ' if sequels.size > 1}#{classes}" #{
      nav_aria_label(pagy, aria_label:)} #{
      pagy_data(pagy, :nav, tokens, sequels, pagy.label_sequels(sequels))
    }></nav>)
end