- return if total_pages <= 1
- original_params = params.permit!.to_h

- gap_number = 2
- page_numbers = (1..total_pages).to_a
- begin_paging = (1..(1 + gap_number)).to_a
- middle_paging = page_numbers & ((page - gap_number)..(page + gap_number)).to_a
- end_paging = page_numbers & ((total_pages - gap_number)..total_pages).to_a

- if begin_paging.last < middle_paging.first.pred
  - begin_paging[-1] = 'gap1'
- if middle_paging.last < end_paging.first.pred
  - end_paging[0] = 'gap2'
- page_numbers = begin_paging + middle_paging + end_paging

%nav.execution-paging
  %ul.pagination.justify-content-center
    - if page > 1
      %li.page-item
        = link_to original_params.merge(page: page.pred), class: 'page-link' do
          %i.bi.bi-chevron-left

    - page_numbers.uniq.each do |page_num|
      - if page == page_num
        - item_css = 'active'
      - elsif page_num.to_s.start_with?('gap')
        - page_num, item_css = '...', 'disabled'

      %li.page-item{ class: item_css }
        = link_to page_num, original_params.merge(page: page_num), class: 'page-link'

    - if page < total_pages
      %li.page-item
        = link_to original_params.merge(page: page.next), class: 'page-link' do
          %i.bi.bi-chevron-right