{# settings/system.html — Steward's own health (#5467): a verdict, then each of
   its process metrics now and over the last day, from the self-monitor tick.
   Each is a metric an alert rule can watch under "Steward itself". #}
{% extends "base.html" %}
{% from "_macros.html" import crumbs %}
{% from "settings/_tabs.html" import settings_tabs %}
{% block title %}Settings — System — Steward{% endblock %}
{% block section_tabs %}{{ settings_tabs("system") }}{% endblock %}
{% block breadcrumb %}{{ crumbs([("Settings", "/settings/"), ("System", "")]) }}{% endblock %}
{% block content %}
<p class="page-verdict">
  {%- if problems %}{% set said = problems|join("; ") %}<span class="tone-warn">{{ said[:1]|upper }}{{ said[1:] }}.</span>
  {%- elif not seen %}<span class="tone-dim">No readings yet: the first arrive within a minute of Steward starting.</span>
  {%- else %}<span class="tone-ok">Steward is running normally.</span>{% endif -%}
</p>

<h2 class="section-title" style="margin:1.5rem 0 1rem;">Steward itself</h2>
<div class="card-flush">
  <table class="table">
    <thead><tr><th>Measure</th><th>Now</th><th>Last 24 h</th></tr></thead>
    <tbody>
      {% for r in rows %}
      <tr>
        <td class="cell-name"><span title="{{ metric_label(r.metric) }}">{{ metric_label(r.metric) }}</span>
          <div class="cell-sub" title="{{ metric_about(r.metric) }}">{{ metric_about(r.metric) }}</div></td>
        <td class="nowrap">{{ metric_value(r.metric, r.now) }}
          {%- if r.at %}<div class="cell-sub">{{ r.at|ago }}</div>{% endif %}</td>
        <td class="nowrap">
          {%- if r.low is not none %}{{ metric_value(r.metric, r.low) }} – {{ metric_value(r.metric, r.high) }}
          <span class="metric-preview-spark" aria-hidden="true">{{ r.spark|safe }}</span>
          {%- else %}<span class="tone-dim">—</span>{% endif -%}
        </td>
      </tr>
      {% endfor %}
    </tbody>
  </table>
</div>
<p class="field-hint" style="margin-top:0.75rem;">
  Recorded each minute (the cleanup each hour). Any of these can be watched by an
  <a href="/alerts/rules/new">alert rule</a>: pick the source "Steward itself".</p>

{# Outgoing email (#5509): every email waits in the outbox until the mail
   server takes it. What hasn't gone yet, failures first, then the longest
   retrying; sent mail is only counted. #}
<h2 class="section-title" style="margin:2rem 0 0.5rem;">Outgoing email</h2>
<p style="margin:0 0 1rem;">
  {%- if not email.rows %}Nothing waiting to send. {% endif -%}
  {{ "{:,}".format(email.sent) }} sent in the last 7 days.</p>
{% if email.rows %}
<div class="card-flush">
  <table class="table">
    <thead><tr><th>To</th><th>What</th><th>State</th><th>Queued</th></tr></thead>
    <tbody>
      {% for r in email.rows %}
      <tr>
        <td class="cell-name"><span title="{{ r.recipient }}">{{ r.recipient }}</span></td>
        <td class="nowrap">{{ kind_labels.get(r.kind, r.kind) }}</td>
        <td>
          {%- if r.state == "failed" %}<span class="badge badge-red">failed</span>
          {%- elif r.state == "pending" and r.attempts %}<span class="badge badge-yellow">retrying</span>
            <span class="tone-dim">attempt {{ r.attempts }}{% if r.next_attempt_at %}, next {{ r.next_attempt_at|when }}{% endif %}</span>
          {%- elif r.state == "held" %}<span class="badge badge-yellow">gathering</span>
            <span class="tone-dim">sends {{ r.send_after|when }}</span>
          {%- else %}<span class="badge badge-yellow">sending</span>{% endif %}
          {%- if r.last_error %}<div class="cell-note" style="max-width:32rem;overflow-wrap:anywhere;">{{ r.last_error }}</div>{% endif -%}
        </td>
        <td class="nowrap">{{ r.created_at|ago }}</td>
      </tr>
      {% endfor %}
      {% if email.more %}
      <tr><td colspan="4" class="tone-dim">+{{ email.more }} more not yet sent</td></tr>
      {% endif %}
    </tbody>
  </table>
</div>
{% endif %}
<p class="field-hint" style="margin-top:0.75rem;">
  An email the server refuses is failed at once; one it can't take yet is tried
  again for up to an hour. The mail server is set under
  <a href="/settings/notifications/">Notifications</a>.</p>

{# Storage (#5469): Postgres's own figures for each table, then what the
   hourly cleanup last removed. Read from the catalog, never by counting. #}
<h2 class="section-title" style="margin:2rem 0 0.5rem;">Storage</h2>
<p class="field-hint" style="margin:0 0 1rem;">The database takes {{ storage.total|bytes }} on disk.</p>
<div class="card-flush">
  <table class="table">
    <thead><tr><th>Table</th><th class="num">On disk</th><th class="num">Rows (estimate)</th></tr></thead>
    <tbody>
      {% for t in storage.tables %}
      <tr>
        <td class="cell-name"><span title="{{ t.name }}">{{ t.name }}</span></td>
        <td class="num nowrap">{{ t.bytes|bytes }}</td>
        <td class="num nowrap">{% if t.rows is not none %}{{ "{:,}".format(t.rows) }}{% else %}—{% endif %}</td>
      </tr>
      {% endfor %}
      {% if storage.rest.count %}
      <tr><td class="tone-dim">+{{ storage.rest.count }} smaller tables</td>
        <td class="num nowrap tone-dim">{{ storage.rest.bytes|bytes }}</td><td></td></tr>
      {% endif %}
    </tbody>
  </table>
</div>

<h2 class="section-title" style="margin:2rem 0 0.5rem;">Last cleanup</h2>
{% if not cleanup %}
<p class="tone-dim">None has finished since this version started: the cleanup runs each hour.</p>
{% else %}
<p style="margin:0 0 1rem;">Ran {{ cleanup.at|ago }} and took {{ cleanup.secs|duration }}.
  {%- if not cleanup.removed %} Nothing was past its window ({{ cleanup.passes }} passes).{% endif %}</p>
{% if cleanup.removed %}
<div class="card-flush">
  <table class="table">
    <thead><tr><th>What went</th><th class="num">Rows</th></tr></thead>
    <tbody>
      {% for what, n in cleanup.removed %}
      <tr><td class="cell-name"><span title="{{ what }}">{{ what }}</span></td>
        <td class="num nowrap">{{ "{:,}".format(n) }}</td></tr>
      {% endfor %}
    </tbody>
  </table>
</div>
{% endif %}
{% endif %}
<p class="field-hint" style="margin-top:0.75rem;">
  How long each kind of data is kept is set under
  <a href="/settings/general/">General</a> (data and audit log) and
  <a href="/settings/thresholds/">Thresholds &amp; retention</a> (metrics, Docker and logs).</p>
{% endblock %}