# See the Pagy documentation: https://ddnexus.github.io/pagy/extras/bulma
# encoding: utf-8
# frozen_string_literal: true

require 'pagy/extras/shared'

class Pagy
  module Frontend

    # Pagination for Bulma: it returns the html with the series of links to the pages
    def pagy_bulma_nav(pagy)
      link, p_prev, p_next = pagy_link_proc(pagy), pagy.prev, pagy.next

      html = (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>)) \
           + (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

    # Javascript pagination for bulma: it returns a nav and a JSON tag used by the Pagy.nav javascript
    def pagy_bulma_nav_js(pagy, id=pagy_id)
      link, p_prev, p_next = pagy_link_proc(pagy), pagy.prev, pagy.next
      tags = { 'before' => ( (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>)) \
                           + (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>)) \
                           + '<ul class="pagination-list">' ),
               'link'   => %(<li>#{link.call(PAGE_PLACEHOLDER, PAGE_PLACEHOLDER, %(class="pagination-link" aria-label="goto page #{PAGE_PLACEHOLDER}"))}</li>),
               'active' => %(<li>#{link.call(PAGE_PLACEHOLDER, PAGE_PLACEHOLDER, %(class="pagination-link is-current" aria-current="page" aria-label="page #{PAGE_PLACEHOLDER}"))}</li>),
               'gap'    => %(<li><span class="pagination-ellipsis">#{pagy_t('pagy.nav.gap')}</span></li>),
               'after'  => '</ul>' }
      %(<nav id="#{id}" class="pagy-bulma-nav-js pagination is-centered" role="navigation" aria-label="pagination"></nav>#{pagy_json_tag(pagy, :nav, id, tags, pagy.sequels)})
    end

    # Javascript combo pagination for Bulma: it returns a nav and a JSON tag used by the Pagy.combo_nav javascript
    def pagy_bulma_combo_nav_js(pagy, id=pagy_id)
      link, p_prev, p_next, p_page, p_pages = pagy_link_proc(pagy), pagy.prev, pagy.next, pagy.page, pagy.pages

      html = %(<nav id="#{id}" class="pagy-bulma-combo-nav-js" role="navigation" aria-label="pagination">) \
           + %(<div class="field is-grouped is-grouped-centered" role="group">)
      html << (p_prev ? %(<p class="control">#{link.call(p_prev, pagy_t('pagy.nav.prev'), 'class="button" aria-label="previous page"')}</p>)
                      : %(<p class="control"><a class="button" disabled>#{pagy_t('pagy.nav.prev')}</a></p>))
      input = %(<input class="input" type="number" min="1" max="#{p_pages}" value="#{p_page}" style="padding: 0; text-align: center; width: #{p_pages.to_s.length+1}rem; margin:0 0.3rem;">)
      html << %(<div class="pagy-combo-input control level is-mobile">#{pagy_t('pagy.combo_nav_js', page_input: input, count: p_page, pages: p_pages)}</div>)
      html << (p_next ? %(<p class="control">#{link.call(p_next, pagy_t('pagy.nav.next'), 'class="button" aria-label="next page"')}</p>)
                      : %(<p class="control"><a class="button" disabled>#{pagy_t('pagy.nav.next')}</a></p>))
      html << %(</div></nav>#{pagy_json_tag(pagy, :combo_nav, id, p_page, pagy_marked_link(link))})
    end

  end
end