{% extends "base.html" %}
{% block title %}{% if rule %}Edit Rule{% else %}New Alert Rule{% endif %} — Fabled Scryer{% endblock %}
{% block content %}
<div style="max-width:600px;margin:2rem auto;">
  <h1 class="page-title">{% if rule %}Edit Rule{% else %}New Alert Rule{% endif %}</h1>
  <div class="card">
    <form method="post" action="{% if rule %}/alerts/rules/{{ rule.id }}{% else %}/alerts/rules{% endif %}">

      <div class="form-group">
        <label>Rule Name</label>
        <input type="text" name="name" required autofocus
               value="{{ rule.name if rule else '' }}"
               placeholder="e.g. Home server down">
      </div>

      {# ── Source module ───────────────────────────────────────────────────── #}
      <div class="form-group">
        <label>Source</label>
        <select name="source_module" required
                hx-get="/alerts/api/rule_fields"
                hx-trigger="change"
                hx-target="#rule-fields"
                hx-include="[name='source_module']">
          {% for src in source_modules %}
          <option value="{{ src }}" {% if src == initial_source %}selected{% endif %}>
            {{ src }}
          </option>
          {% endfor %}
        </select>
      </div>

      {# ── Dynamic resource + metric ────────────────────────────────────────── #}
      <div id="rule-fields">
        {# Inline the same partial logic so the page is fully usable without JS #}
        <div class="form-group">
          <label>Resource Name</label>
          {% if resources %}
          <select name="resource_name" required>
            {% if not (rule and rule.resource_name) %}<option value="" disabled selected>— pick a resource —</option>{% endif %}
            {% for r in resources %}
            <option value="{{ r }}" {% if rule and r == rule.resource_name %}selected{% endif %}>{{ r }}</option>
            {% endfor %}
          </select>
          {% else %}
          <select name="resource_name" required disabled>
            <option value="">No data yet — run monitors first</option>
          </select>
          <p style="font-size:0.78rem;color:var(--text-muted);margin-top:0.25rem;">
            Resource names populate from live metric data. Start the scheduler and try again.
          </p>
          {% endif %}
        </div>

        <div class="form-group">
          <label>Metric Name</label>
          <select name="metric_name" required>
            {% if not (rule and rule.metric_name) %}<option value="" disabled selected>— pick a metric —</option>{% endif %}
            {% for m in metrics %}
            <option value="{{ m }}" {% if rule and m == rule.metric_name %}selected{% endif %}>{{ m }}</option>
            {% endfor %}
          </select>
        </div>
      </div>

      {# ── Condition ───────────────────────────────────────────────────────── #}
      <div style="display:grid;grid-template-columns:1fr 1fr;gap:1rem;">
        <div class="form-group">
          <label>Operator</label>
          <select name="operator">
            {% for val, label in operators %}
            <option value="{{ val }}" {% if rule and rule.operator.value == val %}selected{% endif %}>
              {{ label }}
            </option>
            {% endfor %}
          </select>
        </div>
        <div class="form-group">
          <label>Threshold</label>
          <input type="number" name="threshold" step="any" required
                 value="{{ rule.threshold if rule else '' }}"
                 placeholder="0.5">
        </div>
      </div>

      <div class="form-group">
        <label>Consecutive failures before FIRING</label>
        <input type="number" name="consecutive_failures_required" min="1"
               value="{{ rule.consecutive_failures_required if rule else 1 }}">
      </div>

      {# ── Metric reference ────────────────────────────────────────────────── #}
      <details style="margin-bottom:1rem;">
        <summary style="cursor:pointer;font-size:0.82rem;color:var(--text-muted);user-select:none;">
          Metric reference
        </summary>
        <div style="margin-top:0.75rem;display:grid;gap:0.5rem;">
          {% set descs = {
            "ping":    [("up", "1.0 = reachable, 0.0 = unreachable"),
                        ("response_time_ms", "round-trip latency in milliseconds")],
            "dns":     [("resolved", "1.0 = resolved, 0.0 = failed"),
                        ("ip_changed", "1.0 when resolved IP differs from expected")],
            "traefik": [("request_rate", "requests/sec for this router"),
                        ("error_rate", "fraction of 5xx responses (0–1)"),
                        ("latency_p50_ms", "median response time ms"),
                        ("latency_p95_ms", "p95 response time ms"),
                        ("latency_p99_ms", "p99 response time ms"),
                        ("response_bytes_rate", "bytes/sec of responses"),
                        ("cert_expiry_days", "days until TLS cert expires")],
            "unifi":   [("is_up", "1.0 = WAN up, 0.0 = down"),
                        ("latency_ms", "WAN latency in ms"),
                        ("total_clients", "number of connected clients")],
            "ups":     [("battery_charge_pct", "battery charge 0–100"),
                        ("on_battery", "1.0 when running on battery"),
                        ("battery_runtime_secs", "estimated runtime remaining in seconds")],
            "docker":  [("cpu_pct", "container CPU usage %"),
                        ("mem_pct", "container memory usage %")],
            "http":    [("is_up", "1.0 = check passed, 0.0 = failed"),
                        ("response_ms", "HTTP response time in ms")],
          } %}
          {% for src, pairs in descs.items() %}
          <div>
            <div style="font-size:0.78rem;font-weight:600;color:var(--text-dim);text-transform:uppercase;letter-spacing:0.05em;margin-bottom:0.2rem;">{{ src }}</div>
            {% for metric, desc in pairs %}
            <div style="display:grid;grid-template-columns:160px 1fr;gap:0.5rem;font-size:0.78rem;padding:0.15rem 0;">
              <code>{{ metric }}</code>
              <span style="color:var(--text-muted);">{{ desc }}</span>
            </div>
            {% endfor %}
          </div>
          {% endfor %}
        </div>
      </details>

      <div style="display:flex;gap:1rem;margin-top:1.5rem;">
        <button type="submit" class="btn">{% if rule %}Save Changes{% else %}Create Rule{% endif %}</button>
        <a href="/alerts/" class="btn btn-ghost">Cancel</a>
      </div>
    </form>
  </div>
</div>
{% endblock %}