format :html do
  bar_cols 6, 6
  info_bar_cols 5, 4, 3

  def existing_rule_card
    @existing_rule_card ||= find_existing_rule_card
  end

  view :bar, unknown: true do
    voo.hide :bar_nav unless existing_rule_card
    super()
  end

  view :expanded_bar, unknown: true do
    super()
  end

  view :one_line_content,
       wrap: { div: { class: "text-muted one-line" } }, unknown: true do
    return render_mini_unknown unless existing_rule_card

    with_nest_mode :compact do
      one_line_content
    end
  end

  view :raw_one_line_content,
       wrap: { div: { class: "text-muted one-line" } }, unknown: true do
    return render_mini_unknown unless existing_rule_card

    raw_one_line_content
  end

  view :bar_bottom, unknown: true do
    if nest_mode == :edit
      current_rule_form
    else
      nest existing_rule_card, view: :core
    end
  end

  view :bar_middle, unknown: true do
    rule_info
  end

  view :bar_left, unknown: true do
    super()
  end

  view :bar_right, unknown: true do
    voo.show?(:bar_bottom) ? rule_info : rule_short_content
  end

  def rule_short_content
    return "" unless existing_rule_card

    nest existing_rule_card, { view: :one_line_content },
         set_context: card.name.trunk_name
  end

  def bar_title
    return super() if voo.show? :full_name

    linking_to_existing_rule { card.rule_setting_title }
  end

  # LOCALIZE
  def rule_info
    return wrap_with(:em, "no existing #{setting_link} rule") unless existing_rule_card

    wrap_with :span,
              "#{rule_setting_link} rule that applies to "\
              "#{rule_set_link existing_rule_card}"
  end

  def rule_setting_link
    link_to_card card.rule_setting, card.rule_setting_name
  end

  def rule_set_link existing_rule
    count = link_to_card [card.rule_set, :by_name], card.rule_set.count
    "#{link_to_card card.rule_set, existing_rule.trunk&.label&.downcase} (#{count})"
  end

  private

  def linking_to_existing_rule
    return yield unless existing_rule_card && voo.show?(:toggle)

    link_to_view bar_title_toggle_view, yield
  end
end