{# Shared template macros. Import with: {% from "_macros.html" import crumbs %} #}

{# Breadcrumb trail. `items` is a list of (label, href) pairs, ordered root→current.
   Intermediate items with a truthy href render as links; the last item (or any
   item with an empty href) renders as plain current text. #}
{% macro crumbs(items) -%}
<nav class="breadcrumb" aria-label="Breadcrumb">
  {%- for label, href in items -%}
    {%- if loop.last -%}
      <span class="breadcrumb-cur" aria-current="page">{{ label }}</span>
    {%- elif href -%}
      <a href="{{ href }}">{{ label }}</a><span class="breadcrumb-sep">›</span>
    {%- else -%}
      <span>{{ label }}</span><span class="breadcrumb-sep">›</span>
    {%- endif -%}
  {%- endfor -%}
</nav>
{%- endmacro %}

{# Threshold emphasis for a numeric metric (CPU/mem/disk %, etc).
   Returns an inline-style fragment to drop into a span's style="": amber +
   semibold at >= warn, red + bold at >= crit, empty (inherit) when the value
   is normal or None. This makes the FAILING METRIC ITSELF stand out — not just
   the status dot. Defaults suit percentage gauges (warn 80 / crit 90); pass
   explicit warn/crit for other scales. Keep thresholds here so they live in one
   place rather than hardcoded per template. #}
{% macro metric_style(value, warn=80, crit=90) -%}
{%- if value is not none and value >= crit -%}color:var(--red);font-weight:700;
{%- elif value is not none and value >= warn -%}color:var(--yellow);font-weight:600;
{%- endif -%}
{%- endmacro %}

{# Inverted emphasis for "higher is better" metrics like uptime %: amber below
   `warn`, red below `crit`. The mirror of metric_style — same one-place-for-
   thresholds discipline, opposite direction. Defaults suit SLA percentages. #}
{% macro uptime_style(value, warn=99.0, crit=95.0) -%}
{%- if value is not none and value < crit -%}color:var(--red);font-weight:700;
{%- elif value is not none and value < warn -%}color:var(--yellow);font-weight:600;
{%- endif -%}
{%- endmacro %}