require 'will_paginate/view_helpers/action_view'
module Symphonia
  class BootstrapLinkRender < ::WillPaginate::ActionView::LinkRenderer

    def pagination
      items = @options[:page_links] ? windowed_page_numbers : []
      unless @options[:page_links] == :only
        items.unshift :previous_page
        items.push :next_page
      end
      items
    end

    def to_html
      html = pagination.map do |item|
        if @options[:remote]
          if item == :next_page
            tag :li,next_page, class: 'page-item'
          end
        else
          tag(:li, (item.is_a?(Integer) ?
            page_number(item) :
            send(item)).html_safe, class: 'page-item' + (item == current_page ? ' active' : ''))
        end
      end.join(@options[:link_separator])

      container_classes = %w(pagination justify-content-center)
      container_classes << 'pagination-sm' if @options[:small]
      container_classes << 'pagination-lg' if @options[:large]
      nav = tag(:ul, html.html_safe, class: container_classes.join(' '))
      tag :nav, nav, class: 'd-print-none'
    end

    def default_url_params
      @options[:query] && @options[:query].to_params || {}
    end

    def url(page)
      @base_url_params ||= begin
        url_params = merge_get_params(default_url_params)
        url_params[:only_path] = true
        merge_optional_params(url_params)
      end

      @template.url_for(@base_url_params.merge({:page => page}))
    end

    def page_number(page)
      link_options = @options[:link_options] || {}

      if page == current_page
        tag(:span, page, class: 'page-link current_page')
      else
        link_options.merge! class: 'page-link', rel: rel_value(page)
        link(page, page, {:'data-remote' => @options[:remote]}.merge(link_options))
      end
    end

    def previous_or_next_page(page, text, classname)
      if page
        link(text, page, :'data-remote' => @options[:remote], class: "page-link #{classname}")
      else
        tag(:span, text, class: "page-link #{classname} disabled")
      end
    end

  end

end