{# alerts/_rule_fields.html — what a rule watches, for one source; the rule
   form includes it and swaps it in again when the source changes. For a
   source whose resources are hosts, the rule can instead cover every host,
   or every host in an inventory group (#5464): Steward then keeps one rule
   per host under it. What a rule covers is fixed once it exists. The host,
   part and metric pickers are alerts/_rule_target.html, swapped on their
   own as a host or part is picked (#5475). #}
{% set covers = current_covers|default("resource") %}
{% set one = covers == "resource" %}
{% if host_source|default(false) %}
<div class="form-group">
  <label for="rule-covers">Covers</label>
  {% if covers_locked|default(false) %}
  <input type="hidden" name="covers" value="{{ covers }}">
  <p style="margin:0;">{% if one %}One host, or one part of a host{% elif covers == "all_hosts" %}Every host{% else %}Every host in a group{% endif %}
    <span class="tone-dim">· fixed once the rule exists</span></p>
  {% else %}
  <select id="rule-covers" name="covers" data-covers>
    <option value="resource" {% if one %}selected{% endif %}>One host, or one part of a host</option>
    <option value="all_hosts" {% if covers == "all_hosts" %}selected{% endif %}>Every host</option>
    <option value="group" {% if covers == "group" %}selected{% endif %}>Every host in a group</option>
  </select>
  {% endif %}
  <p class="field-hint">Covering hosts keeps one alert per host under this rule, each named
    "rule: host". A host that starts reporting, or joins the group, is covered within a minute;
    one that leaves loses its alert and that alert's history.</p>
</div>
<div class="form-group" data-cover-group {% if covers != "group" %}hidden{% endif %}>
  <label for="rule-group">Group</label>
  {# Re-read when the reader comes back to this tab, so a group just made in
     Inventory is here without losing what was typed. #}
  <div id="rule-group-picker" hx-get="/alerts/api/cover_groups" hx-trigger="visibilitychange[document.visibilityState === 'visible'] from:document"
       hx-include="[name='cover_group'],[name='covers']" hx-swap="innerHTML">
    {% include "alerts/_cover_groups.html" %}
  </div>
  <p class="field-hint">A host is in a group through its linked Ansible target.
    <a href="/ansible/inventory/?add=group" target="_blank" rel="noopener">Make a group, or change who is in one, in Ansible → Inventory</a>;
    it shows here when you come back.</p>
</div>
{% endif %}
<div id="rule-target">
{% include "alerts/_rule_target.html" %}
</div>