# Copyright © 2011-2020 MUSC Foundation for Research Development~
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class Breadcrumber
  include ActionView::Helpers::TagHelper
  include Rails.application.routes.url_helpers

  def initialize
    clear
  end

  def clear(opts={})
    if opts[:crumb]
      @crumbs.delete(opts[:crumb])
    else
      @base   = Hash.new
      @crumbs = Array.new
    end
    self
  end

  def set_base(key, url)
    @base = { key: key, url: url }
    self
  end

  def add_crumbs(crumbs)
    crumbs.each do |crumb|
      add_crumb(crumb)
    end
    self
  end

  def add_crumb(crumb)
    @crumbs << crumb
    self
  end

  def breadcrumbs
    if @base.any?
      crumbs = [content_tag(:li, content_tag(:a, I18n.t("layout.navigation.#{@base[:key]}"), href: @base[:url]))]
      @crumbs.each do |crumb|
        crumbs <<
          if crumb[:url]
            content_tag(:li, content_tag(:a, crumb[:label], href: crumb[:url]))
          else
            content_tag(:li, crumb[:label])
          end
      end
      crumbs.join(content_tag(:li, '/', class: 'px-2')).html_safe
    end
  end
end
