include All::Permissions::Follow

def option_cards
  Card::FollowOption.cards.compact
end

def options_rule_card
  Card.new(
    name: 'follow_options_card',
    type_code: :pointer,
    content: option_cards.map { |oc| "[[#{oc.name}]]" }.join("\n")
  )
end

format :html do
  def default_follow_item_args args
    args[:condition] ||= Env.params[:condition] || '*always'
  end

  view :follow_item, tags: :unknown_ok do |args|
    if card.new_card? || !card.include_item?(args[:condition])
      button_view = :add_follow_rule_button
      form_opts = { add_item: args[:condition] }
    else
      button_view = :delete_follow_rule_button
      form_opts = { drop_item: args[:condition] }
    end

    text = if (option_card = Card.fetch args[:condition])
             option_card.description(card.rule_set)
           else
             card.rule_set.follow_label
           end
    link_target = if card.rule_set.tag.codename == 'self'
                    card.rule_set_name.left
                  else
                    "#{card.rule_set_name}+by name"
                  end
    wrap do
      card_form(
        { action: :update, name: card.name, success: { view: :follow_item } },
        hidden: { condition: args[:condition] }.merge(form_opts)
      ) do
        output [
          _optional_render(button_view, args),
          card_link(link_target, text: text)
        ]
      end
    end
  end

  def default_follow_status_args args
    args[:card_key] ||= card.set_prototype.key
  end

  view :follow_status do |args|
    delete_options =
      wrap_with(:ul, class: 'delete-list list-group') do
        card.item_names.map do |option|
          content_tag :li, class: 'list-group-item' do
            condition = option == '*never' ? '*always' : option
            subformat(card).render_follow_item condition: condition
          end
        end.join "\n"
      end

    follow_link =
      card_link args[:card_key],
                text: 'more options',
                path_opts: {
                  view: :related,
                  related: { name: card.name, view: :edit_single_rule }
                },
                class: 'btn update-follow-link',
                'data-card_key' => args[:card_key]

    header = '<h4>Get notified about changes</h4>'

    [header, delete_options, follow_link].join "\n\n"
  end

  view :delete_follow_rule_button do |_args|
    button_tag(
      type: :submit,
      class: 'btn-xs btn-item-delete btn-primary', 'aria-label' => 'Left Align'
    ) do
      tag :span, class: 'glyphicon glyphicon-ok', 'aria-hidden' => 'true'
    end
  end

  view :add_follow_rule_button do |_args|
    button_tag(
      type: :submit,
      class: 'btn-xs btn-item-add', 'aria-label' => 'Left Align'
    ) do
      tag :span, class: 'glyphicon glyphicon-plus', 'aria-hidden' => 'true'
    end
  end
end