<%
  local_assigns[:margin_bottom] ||= 6
  shared_helper = GovukPublishingComponents::Presenters::SharedHelper.new(local_assigns)
  id ||= nil
  id_prefix ||= "radio-#{SecureRandom.hex(4)}"
  items ||= []

  label ||= nil
  heading ||= nil
  heading_caption ||= nil
  heading_size ||= nil
  small ||= false
  inline ||= false
  heading_level = shared_helper.get_heading_level
  heading_classes = %w(govuk-fieldset__heading)
  heading_classes << "gem-c-radio__heading-text" if heading_level == 'h1'

  if ['s', 'm', 'l', 'xl'].include?(heading_size)
    size = heading_size
  elsif heading_level == 'h1'
    size = 'xl'
  else
    size = 'm'
  end

  description ||= nil
  hint ||= nil
  error_message ||= nil
  error_items ||= []
  margin_bottom = margin_bottom ||= 6

  has_error = error_message || error_items.any?
  hint_id = "hint-#{SecureRandom.hex(4)}" if hint
  error_id = "error-#{SecureRandom.hex(4)}"

  form_group_css_classes = %w(govuk-form-group)
  form_group_css_classes << "govuk-form-group--error" if has_error
  form_group_css_classes << shared_helper.get_margin_bottom

  radio_classes = %w(govuk-radios)
  radio_classes << "govuk-radios--small" if small
  radio_classes << "govuk-radios--inline" if inline

  legend_classes = %w(govuk-fieldset__legend)
  legend_classes << "govuk-fieldset__legend--#{size}"

  aria = "#{hint_id} #{"#{error_id}" if has_error}".strip if hint or has_error

  # check if any item is set as being conditional
  has_conditional = items.any? { |item| item.is_a?(Hash) && item[:conditional] }
%>
<%= tag.div id: id, class: form_group_css_classes do %>
  <%= tag.fieldset class: "govuk-fieldset", "aria-describedby": aria do %>
    <% if heading.present? %>
      <%= tag.legend class: legend_classes do %>
        <%= tag.span(heading_caption, class: "govuk-caption-#{size}") if heading_caption.present? %>
        <%= content_tag(heading_level, heading, class: heading_classes) %>
      <% end %>
    <% end %>
    <% if description.present? %>
      <%= tag.div description, class: "govuk-body" %>
    <% end %>

    <% if hint %>
      <%= render "govuk_publishing_components/components/hint", {
        id: hint_id,
        text: hint
      } %>
    <% end %>

    <% if has_error %>
      <%= render "govuk_publishing_components/components/error_message", {
        id: error_id,
        text: error_message,
        items: error_items,
      } %>
    <% end %>

    <%= content_tag :div, class: radio_classes,
      data: {
        module: ('govuk-radios' if has_conditional)
      } do %>
      <% items.each_with_index do |item, index| %>
        <% if item === :or %>
          <%= tag.div t('components.radio.or'), class: "govuk-radios__divider" %>
        <% else %>
          <%
            item_next = items[index + 1] unless index === items.size - 1
            label_id = item[:id] ? item[:id] : "#{id_prefix}-#{index}"
            label_hint_id = "label-hint-#{SecureRandom.hex(4)}" if item[:hint_text].present?
            conditional_id = "conditional-#{SecureRandom.hex(4)}" if item[:conditional].present?

            data_attrs = { "aria-controls": conditional_id }
            data_attrs["tracking-url"] =  item[:url] if item.key?(:url)

            if item.fetch(:data_attributes, {}).any?
              data_attrs = data_attrs.merge(item[:data_attributes])
            end
          %>
          <%= tag.div class: %w( gem-c-radio govuk-radios__item ) do %>
            <%= check_box_tag name,
              item[:value],
              item[:checked],
              {
                class: "govuk-radios__input",
                id: label_id,
                type: "radio",
                aria: {
                  describedby: label_hint_id
                },
                data: data_attrs,
              }
            %>
            <%= render "govuk_publishing_components/components/label", {
              hint_id: label_hint_id,
              html_for: label_id,
              is_radio_label: true,
              hint_text: item[:hint_text],
              text: item[:text],
              bold: item[:bold]
            } %>
          <% end %>

          <% if item[:conditional] %>
            <%= tag.div item[:conditional], class:"govuk-radios__conditional govuk-radios__conditional--hidden", id: conditional_id %>
          <% end %>

        <% end %>
      <% end %>
    <% end %>

  <% end %>
<% end %>