<%
  period = form.object.send(name)
  current_index = knob_options.index(period.to_i / 1.day)
%>

<fieldset class="knob" data-controller="knob" data-knob-target="field" style="--knob-options: <%= knob_options.length %>; --knob-index: <%= current_index %>">
  <div class="position-relative" role="radiogroup" aria-labelledby="<%= dom_id(form.object, name) %>">
    <% knob_options.each_with_index do |value, index| %>
      <label class="knob__option" style="--i: <%= index %>">
        <%= form.radio_button name,
              value.days,
              data: {
                action: "change->knob#optionChanged change->form#submit",
                index: index,
                knob_target: "option"
              } %>
        <span><%= value %></span>
      </label>
    <% end %>

    <%= form.range_field :slider,
          class: "knob__slider",
          data: { action: "input->knob#sliderChanged change->form#submit", knob_target: "slider" },
          "aria-hidden": true,
          max: knob_options.length - 1,
          min: 0
    %>

    <div class="knob__knob" aria-hidden></div>
  </div>

  <div id="<%= dom_id(form.object, name) %>" class="knob__label">Days</div>
</fieldset>
