koi-common 0.2.202603241449

Shared types, traits, and utilities for the Koi local network toolkit
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Koi · mDNS Browser</title>
<style>
/* ── Lantern / Vellum Design Tokens ─────────────────────────────── */
:root {
  --bg-base: #f4f2ee;
  --bg-surface: #eae7e1;
  --text-primary: #2d2d2d;
  --text-secondary: #6b6b6b;
  --text-muted: #999;
  --accent-sage: #84a59d;
  --accent-clay: #d4a373;
  --accent-hopeful: #c4b060;
  --accent-red: #c45050;
  --accent-blue: #6b8cae;
  --vellum-white: rgba(255,255,255,0.45);
  --glass-blur: blur(14px);
  --border-subtle: rgba(0,0,0,0.06);
  --radius: 12px;
  --radius-sm: 8px;
  --mono: 'Cascadia Code', 'IBM Plex Mono', 'Fira Code', monospace;
  --sans: system-ui, -apple-system, 'Segoe UI', sans-serif;
  --grain: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg-base: #1a1a1a;
    --bg-surface: #232323;
    --text-primary: #e8e6e1;
    --text-secondary: #a0a0a0;
    --text-muted: #666;
    --vellum-white: rgba(255,255,255,0.07);
    --border-subtle: rgba(255,255,255,0.06);
  }
}

/* ── Reset & Base ────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; }
body {
  font-family: var(--sans);
  background: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}
body::before {
  content: '';
  position: fixed; inset: 0;
  background: var(--grain);
  pointer-events: none;
  z-index: 9999;
}

/* ── Nav Bar ─────────────────────────────────────────────────────── */
.nav {
  display: flex; align-items: center; gap: 1.2rem;
  padding: 0.6rem 1.5rem;
  background: var(--vellum-white);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky; top: 0; z-index: 100;
  font-family: var(--mono); font-size: 0.8rem;
}
.nav-logo { font-weight: 700; color: var(--accent-sage); letter-spacing: 0.1em; text-transform: uppercase; }
.nav a { color: var(--text-secondary); text-decoration: none; padding: 0.2rem 0.5rem; border-radius: 4px; transition: color 0.15s; }
.nav a:hover { color: var(--text-primary); }
.nav a.active { color: var(--accent-sage); background: rgba(132,165,157,0.1); }
.nav-sep { color: var(--text-muted); }

/* ── Container / Layout ──────────────────────────────────────────── */
.container { max-width: 1100px; margin: 0 auto; padding: 1.5rem; }

/* ── Hero ────────────────────────────────────────────────────────── */
.hero {
  background: var(--vellum-white);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-subtle);
  border-left: 4px solid var(--accent-sage);
  border-radius: var(--radius);
  padding: 1.2rem 2rem;
  margin-bottom: 1.5rem;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 0.8rem;
}
.hero-left h1 { font-size: 1.3rem; font-weight: 600; }
.hero-label {
  font-family: var(--mono); font-size: 0.65rem; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.15em; color: var(--text-secondary);
}
.hero-stat {
  font-family: var(--mono); font-size: 2rem; font-weight: 700;
  color: var(--accent-sage); line-height: 1;
}
.hero-stat-label { font-family: var(--mono); font-size: 0.6rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.15em; }

/* ── Section Header ──────────────────────────────────────────────── */
.section-label {
  font-family: var(--mono); font-size: 0.65rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.2em;
  color: var(--text-muted); margin-bottom: 0.8rem;
}

/* ── Filter Bar ──────────────────────────────────────────────────── */
.filter-bar {
  display: flex; gap: 0.6rem; align-items: center; margin-bottom: 1rem; flex-wrap: wrap;
}
.filter-input {
  flex: 1; min-width: 180px;
  font-family: var(--mono); font-size: 0.8rem;
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  background: var(--vellum-white);
  backdrop-filter: var(--glass-blur);
  color: var(--text-primary);
  outline: none;
}
.filter-input:focus { border-color: var(--accent-sage); }
.filter-input::placeholder { color: var(--text-muted); }
.filter-tags { display: flex; gap: 0.3rem; flex-wrap: wrap; }
.filter-tag {
  font-family: var(--mono); font-size: 0.65rem;
  padding: 0.2rem 0.5rem; border-radius: 4px;
  background: var(--bg-surface); color: var(--text-secondary);
  cursor: pointer; border: 1px solid transparent;
  transition: all 0.15s; user-select: none;
}
.filter-tag:hover { color: var(--text-primary); }
.filter-tag.active { background: rgba(132,165,157,0.15); color: var(--accent-sage); border-color: var(--accent-sage); }

/* ── Histogram ───────────────────────────────────────────────────── */
.histogram {
  background: var(--vellum-white);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 1rem 1.2rem;
  margin-bottom: 1rem;
}
.hist-row {
  display: flex; align-items: center; gap: 0.6rem;
  font-family: var(--mono); font-size: 0.75rem;
  margin-bottom: 0.3rem; cursor: pointer;
}
.hist-row:hover { opacity: 0.8; }
.hist-label { min-width: 180px; color: var(--text-secondary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.hist-bar-wrap { flex: 1; height: 14px; background: var(--bg-surface); border-radius: 3px; overflow: hidden; }
.hist-bar { height: 100%; border-radius: 3px; transition: width 0.3s; }
.hist-count { min-width: 2rem; text-align: right; color: var(--text-muted); font-size: 0.7rem; }

/* Type-colour palette (cycling) */
.type-0 { background: var(--accent-sage); }
.type-1 { background: var(--accent-clay); }
.type-2 { background: var(--accent-hopeful); }
.type-3 { background: var(--accent-blue); }
.type-4 { background: var(--accent-red); }

/* ── Service Table ───────────────────────────────────────────────── */
.panel {
  background: var(--vellum-white);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 0;
  margin-bottom: 1rem;
  overflow: hidden;
}
.panel-title {
  font-family: var(--mono); font-size: 0.65rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.2em;
  color: var(--text-muted); padding: 0.8rem 1.2rem 0;
}
.svc-table { width: 100%; border-collapse: collapse; font-size: 0.82rem; }
.svc-table th {
  font-family: var(--mono); font-size: 0.65rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-muted);
  text-align: left; padding: 0.5rem 0.8rem; border-bottom: 1px solid var(--border-subtle);
  cursor: pointer; user-select: none; white-space: nowrap;
}
.svc-table th:hover { color: var(--text-primary); }
.svc-table th .sort-arrow { font-size: 0.55rem; margin-left: 0.2rem; }
.svc-table td { padding: 0.5rem 0.8rem; border-bottom: 1px solid var(--border-subtle); vertical-align: middle; }
.svc-table tr.svc-row { cursor: pointer; transition: background 0.1s; }
.svc-table tr.svc-row:hover { background: rgba(132,165,157,0.04); }
.svc-table tr.svc-detail { display: none; }
.svc-table tr.svc-detail.open { display: table-row; }
.svc-table tr.svc-detail td { padding: 0.6rem 1.2rem 0.8rem; background: var(--bg-surface); }
.resolved-dot { display: inline-block; width: 6px; height: 6px; border-radius: 50%; margin-right: 0.3rem; vertical-align: middle; }
.resolved-dot.yes { background: var(--accent-sage); }
.resolved-dot.no { background: var(--text-muted); }
.removed-tag {
  font-family: var(--mono); font-size: 0.6rem; color: var(--accent-red);
  background: rgba(196,80,80,0.1); padding: 0.1rem 0.4rem; border-radius: 3px; margin-left: 0.3rem;
}
.ip-cell { font-family: var(--mono); font-size: 0.75rem; }
.port-cell { font-family: var(--mono); font-size: 0.75rem; }

/* ── TXT detail pane ─────────────────────────────────────────────── */
.detail-grid { display: flex; gap: 1.5rem; flex-wrap: wrap; }
.detail-section { min-width: 200px; }
.detail-section h4 {
  font-family: var(--mono); font-size: 0.6rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.15em; color: var(--text-muted); margin-bottom: 0.3rem;
}
.txt-table { font-size: 0.78rem; border-collapse: collapse; }
.txt-table td { padding: 0.15rem 0.6rem 0.15rem 0; font-family: var(--mono); font-size: 0.72rem; }
.txt-key { color: var(--accent-sage); }
.txt-val { color: var(--text-secondary); word-break: break-all; }
.detail-meta { font-family: var(--mono); font-size: 0.72rem; color: var(--text-secondary); }
.detail-meta span { display: block; margin-bottom: 0.15rem; }

/* ── Launch Button ───────────────────────────────────────────────── */
.launch-btn {
  display: inline-flex; align-items: center; gap: 0.3rem;
  font-family: var(--mono); font-size: 0.7rem; font-weight: 500;
  color: var(--accent-sage); background: rgba(132,165,157,0.12);
  border: 1px solid rgba(132,165,157,0.25);
  padding: 0.25rem 0.6rem; border-radius: 4px;
  text-decoration: none; cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
  white-space: nowrap;
}
.launch-btn:hover { background: rgba(132,165,157,0.22); border-color: var(--accent-sage); }
.launch-btn svg { width: 12px; height: 12px; flex-shrink: 0; }
.launch-inline {
  display: inline-flex; align-items: center;
  color: var(--accent-sage); text-decoration: none; cursor: pointer;
  font-family: var(--mono); font-size: 0.72rem;
}
.launch-inline:hover { text-decoration: underline; }
.launch-inline svg { width: 11px; height: 11px; margin-left: 0.2rem; flex-shrink: 0; }

/* ── Discovery Log ───────────────────────────────────────────────── */
.activity-log { max-height: 250px; overflow-y: auto; padding: 0.6rem 1.2rem; }
.log-entry {
  display: flex; gap: 0.8rem; padding: 0.25rem 0; font-size: 0.78rem;
  font-family: var(--mono); border-bottom: 1px solid var(--border-subtle);
}
.log-time { color: var(--text-muted); white-space: nowrap; min-width: 5rem; }
.log-type { min-width: 5rem; }
.log-type.found { color: var(--accent-sage); }
.log-type.resolved { color: var(--accent-clay); }
.log-type.removed { color: var(--accent-red); }
.log-msg { color: var(--text-secondary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.panel-empty { color: var(--text-muted); font-style: italic; font-size: 0.85rem; padding: 1rem 1.2rem; }

/* ── Disconnected ────────────────────────────────────────────────── */
.disconnected {
  position: fixed; bottom: 1rem; left: 50%; transform: translateX(-50%);
  background: var(--accent-red); color: #fff;
  font-family: var(--mono); font-size: 0.75rem;
  padding: 0.4rem 1.2rem; border-radius: 20px;
  display: none; z-index: 200;
}
.disconnected.show { display: block; }

/* ── Responsive ──────────────────────────────────────────────────── */
@media (max-width: 700px) {
  .hist-label { min-width: 120px; }
  .svc-table th:nth-child(5), .svc-table td:nth-child(5) { display: none; }
}
</style>
</head>
<body>

<!-- Nav -->
<div class="nav">
  <span class="nav-logo">koi</span>
  <a href="/">Dashboard</a>
  <span class="nav-sep">·</span>
  <a href="/mdns-browser" class="active">Browser</a>
  <span class="nav-sep">·</span>
  <a href="/docs">API Docs</a>
</div>

<!-- Main -->
<div class="container">

  <!-- Hero -->
  <div class="hero">
    <div class="hero-left">
      <h1>mDNS Browser</h1>
      <div class="hero-label">LIVE NETWORK SERVICE DISCOVERY</div>
    </div>
    <div style="text-align:center">
      <div class="hero-stat" id="hero-count">0</div>
      <div class="hero-stat-label">instances</div>
    </div>
    <div style="text-align:center">
      <div class="hero-stat" id="hero-types">0</div>
      <div class="hero-stat-label">types</div>
    </div>
  </div>

  <!-- Filter Bar -->
  <div class="filter-bar">
    <input class="filter-input" id="filter-input" type="text" placeholder="Filter services…" autocomplete="off">
    <div class="filter-tags" id="filter-tags"></div>
  </div>

  <!-- Type Histogram -->
  <div class="section-label">SERVICE TYPES</div>
  <div class="histogram" id="histogram">
    <div class="panel-empty">Discovering…</div>
  </div>

  <!-- Service Table -->
  <div class="section-label">SERVICES</div>
  <div class="panel">
    <table class="svc-table">
      <thead><tr>
        <th data-sort="name">Name <span class="sort-arrow"></span></th>
        <th data-sort="service_type">Type <span class="sort-arrow"></span></th>
        <th data-sort="host">Host <span class="sort-arrow"></span></th>
        <th data-sort="ip">IP <span class="sort-arrow"></span></th>
        <th data-sort="port">Port <span class="sort-arrow"></span></th>
        <th style="width:3rem"></th>
      </tr></thead>
      <tbody id="svc-body"></tbody>
    </table>
    <div class="panel-empty" id="svc-empty" style="display:none">No services discovered yet</div>
  </div>

  <!-- Discovery Log -->
  <div class="section-label">DISCOVERY LOG</div>
  <div class="panel">
    <div class="activity-log" id="discovery-log">
      <div class="panel-empty" id="log-empty">Waiting for events…</div>
    </div>
  </div>

</div>

<div class="disconnected" id="disconnected">Connection lost — reconnecting…</div>

<!-- Inline SVG icon for external link / launch -->
<template id="tmpl-launch-icon">
  <svg viewBox="0 0 16 16" fill="none" stroke="currentColor" stroke-width="1.8" stroke-linecap="round" stroke-linejoin="round">
    <path d="M6 3H3v10h10v-3"/>
    <path d="M9 2h5v5"/>
    <path d="M14 2 7 9"/>
  </svg>
</template>

<script>
(function() {
  'use strict';

  const POLL_INTERVAL = 5000;
  const MAX_LOG = 30;

  // ── State ─────────────────────────────────────────────────────
  let snapshot = null;
  let logEntries = [];
  let sortKey = 'name';
  let sortAsc = true;
  let filterText = '';
  let activeTypes = new Set(); // empty = show all
  let expandedRows = new Set();
  let pollTimer = null;
  let eventSource = null;

  // ── Helpers ───────────────────────────────────────────────────
  function $(id) { return document.getElementById(id); }
  function esc(s) { const d = document.createElement('div'); d.textContent = s; return d.innerHTML; }
  function timeStr() { return new Date().toLocaleTimeString('en-GB', { hour12: false }); }
  function launchIcon() { return $('tmpl-launch-icon').innerHTML; }

  function relTime(iso) {
    if (!iso) return '—';
    const diff = Math.floor((Date.now() - new Date(iso).getTime()) / 1000);
    if (diff < 5) return 'just now';
    if (diff < 60) return diff + 's ago';
    if (diff < 3600) return Math.floor(diff / 60) + 'm ago';
    return Math.floor(diff / 3600) + 'h ago';
  }

  // ── HTTP / launchable endpoint detection ──────────────────────
  //
  // Detects services that expose HTTP endpoints based on:
  // 1. Service type matching (_http._tcp, _https._tcp, _webapp._tcp, etc.)
  // 2. Well-known HTTP ports (80, 443, 8080, 8443, …)
  // 3. TXT record hints (path=, url=, etc.)
  //
  // Returns { url, label } or null.

  const HTTP_TYPES = new Set([
    '_http._tcp', '_https._tcp', '_webapp._tcp',
    '_http._tcp.local.', '_https._tcp.local.',
    '_webapp._tcp.local.',
  ]);
  const HTTPS_TYPES = new Set([
    '_https._tcp', '_https._tcp.local.',
  ]);
  const HTTPS_PORTS = new Set([443, 8443, 9443]);
  const HTTP_PORTS = new Set([80, 8080, 8000, 8888, 3000, 3001, 5000, 5001, 9090]);

  function normalizeType(t) {
    return t.replace(/\.local\.?$/, '');
  }

  function inferEndpoint(svc) {
    if (!svc.ip && !svc.host) return null;
    if (!svc.port) return null;

    const normType = normalizeType(svc.service_type);
    const isExplicitHttp = HTTP_TYPES.has(normType) || HTTP_TYPES.has(svc.service_type);
    const isExplicitHttps = HTTPS_TYPES.has(normType) || HTTPS_TYPES.has(svc.service_type);
    const isHttpPort = HTTP_PORTS.has(svc.port);
    const isHttpsPort = HTTPS_PORTS.has(svc.port);

    // Check TXT records for explicit URL
    const txt = svc.txt || {};
    const txtUrl = txt['url'] || txt['URL'] || txt['Url'];
    if (txtUrl) {
      try {
        new URL(txtUrl); // validate
        return { url: txtUrl, label: txtUrl.replace(/^https?:\/\//, '').replace(/\/$/, '') };
      } catch (_) {}
    }

    // Must be an HTTP-like type or HTTP-ish port
    if (!isExplicitHttp && !isExplicitHttps && !isHttpPort && !isHttpsPort) return null;

    const host = svc.ip || svc.host.replace(/\.$/, '');
    const useHttps = isExplicitHttps || isHttpsPort;
    const scheme = useHttps ? 'https' : 'http';

    // Path from TXT 'path' key
    let path = txt['path'] || txt['Path'] || txt['PATH'] || '/';
    if (!path.startsWith('/')) path = '/' + path;

    // Omit default port in label
    const defaultPort = useHttps ? 443 : 80;
    const portStr = (svc.port === defaultPort) ? '' : ':' + svc.port;
    const url = scheme + '://' + host + portStr + path;
    const label = host + portStr + path;

    return { url, label };
  }

  function isLaunchable(svc) {
    return inferEndpoint(svc) !== null;
  }

  // ── Render ────────────────────────────────────────────────────

  function render() {
    if (!snapshot) return;
    const s = snapshot;

    // Hero
    $('hero-count').textContent = s.total_instances;
    $('hero-types').textContent = s.total_types;

    // Filter tags
    renderFilterTags(s.service_types);

    // Histogram
    renderHistogram(s.service_types);

    // Service table
    renderServiceTable(s.instances);
  }

  function renderFilterTags(types) {
    const container = $('filter-tags');
    let html = '';
    for (const t of types) {
      const norm = normalizeType(t.service_type);
      const cls = activeTypes.has(norm) ? ' active' : '';
      html += '<span class="filter-tag' + cls + '" data-type="' + esc(norm) + '">' + esc(norm) + '</span>';
    }
    container.innerHTML = html;
    container.querySelectorAll('.filter-tag').forEach(function(tag) {
      tag.addEventListener('click', function() {
        const t = this.dataset.type;
        if (activeTypes.has(t)) activeTypes.delete(t); else activeTypes.add(t);
        render();
      });
    });
  }

  function renderHistogram(types) {
    if (types.length === 0) {
      $('histogram').innerHTML = '<div class="panel-empty">Discovering…</div>';
      return;
    }
    const max = Math.max(1, types[0].count);
    let html = '';
    types.forEach(function(t, i) {
      const pct = Math.max(4, (t.count / max) * 100);
      const colorClass = 'type-' + (i % 5);
      const norm = normalizeType(t.service_type);
      html += '<div class="hist-row" data-type="' + esc(norm) + '">'
        + '<span class="hist-label">' + esc(norm) + '</span>'
        + '<span class="hist-bar-wrap"><span class="hist-bar ' + colorClass + '" style="width:' + pct + '%"></span></span>'
        + '<span class="hist-count">' + t.count + '</span></div>';
    });
    $('histogram').innerHTML = html;
    $('histogram').querySelectorAll('.hist-row').forEach(function(row) {
      row.addEventListener('click', function() {
        const t = this.dataset.type;
        if (activeTypes.has(t)) activeTypes.delete(t); else { activeTypes.clear(); activeTypes.add(t); }
        render();
      });
    });
  }

  function renderServiceTable(services) {
    // Filter
    let filtered = services.filter(function(svc) {
      if (svc.removed_at) return false; // hide purged
      if (filterText) {
        const q = filterText.toLowerCase();
        const haystack = (svc.name + ' ' + svc.instance_name + ' ' + svc.service_type + ' ' + svc.host + ' ' + svc.ip).toLowerCase();
        if (haystack.indexOf(q) === -1) return false;
      }
      if (activeTypes.size > 0) {
        if (!activeTypes.has(normalizeType(svc.service_type))) return false;
      }
      return true;
    });

    // Sort
    filtered.sort(function(a, b) {
      let av = a[sortKey] || '', bv = b[sortKey] || '';
      if (sortKey === 'port') { av = a.port || 0; bv = b.port || 0; return sortAsc ? av - bv : bv - av; }
      if (typeof av === 'string') av = av.toLowerCase();
      if (typeof bv === 'string') bv = bv.toLowerCase();
      if (av < bv) return sortAsc ? -1 : 1;
      if (av > bv) return sortAsc ? 1 : -1;
      return 0;
    });

    if (filtered.length === 0) {
      $('svc-body').innerHTML = '';
      $('svc-empty').style.display = '';
      return;
    }
    $('svc-empty').style.display = 'none';

    let html = '';
    for (const svc of filtered) {
      const key = svc.instance_name;
      const resDot = svc.resolved ? 'yes' : 'no';
      const removed = svc.removed_at ? '<span class="removed-tag">removed</span>' : '';
      const endpoint = inferEndpoint(svc);

      // Launch column — show button inline if launchable
      let launchCell = '';
      if (endpoint) {
        launchCell = '<a class="launch-btn" href="' + esc(endpoint.url) + '" target="_blank" rel="noopener" '
          + 'title="Open ' + esc(endpoint.label) + '" onclick="event.stopPropagation()">'
          + launchIcon() + '</a>';
      }

      html += '<tr class="svc-row" data-key="' + esc(key) + '">'
        + '<td><span class="resolved-dot ' + resDot + '"></span>' + esc(svc.name) + removed + '</td>'
        + '<td><span style="font-family:var(--mono);font-size:0.72rem">' + esc(normalizeType(svc.service_type)) + '</span></td>'
        + '<td>' + esc(svc.host ? svc.host.replace(/\.$/, '') : '—') + '</td>'
        + '<td class="ip-cell">' + esc(svc.ip || '—') + '</td>'
        + '<td class="port-cell">' + (svc.port || '—') + '</td>'
        + '<td>' + launchCell + '</td>'
        + '</tr>';

      // Detail row (expandable)
      const open = expandedRows.has(key) ? ' open' : '';
      html += '<tr class="svc-detail' + open + '" data-detail="' + esc(key) + '"><td colspan="6">';
      html += '<div class="detail-grid">';

      // Endpoint link (prominent in detail pane)
      if (endpoint) {
        html += '<div class="detail-section">'
          + '<h4>Endpoint</h4>'
          + '<a class="launch-inline" href="' + esc(endpoint.url) + '" target="_blank" rel="noopener">'
          + esc(endpoint.label) + launchIcon() + '</a>'
          + '</div>';
      }

      // TXT Records
      const txtKeys = Object.keys(svc.txt || {});
      if (txtKeys.length > 0) {
        html += '<div class="detail-section"><h4>TXT Records</h4><table class="txt-table">';
        for (const k of txtKeys.sort()) {
          html += '<tr><td class="txt-key">' + esc(k) + '</td><td class="txt-val">' + esc(svc.txt[k]) + '</td></tr>';
        }
        html += '</table></div>';
      }

      // Metadata
      html += '<div class="detail-section"><h4>Discovery</h4><div class="detail-meta">'
        + '<span>Instance: ' + esc(svc.instance_name) + '</span>'
        + '<span>First seen: ' + relTime(svc.first_seen) + '</span>'
        + '<span>Last seen: ' + relTime(svc.last_seen) + '</span>'
        + '<span>Resolved: ' + (svc.resolved ? 'yes' : 'no') + '</span>'
        + '</div></div>';

      html += '</div></td></tr>';
    }

    $('svc-body').innerHTML = html;

    // Attach row click handlers
    $('svc-body').querySelectorAll('.svc-row').forEach(function(row) {
      row.addEventListener('click', function() {
        const key = this.dataset.key;
        if (expandedRows.has(key)) expandedRows.delete(key); else expandedRows.add(key);
        const detail = document.querySelector('[data-detail="' + CSS.escape(key) + '"]');
        if (detail) detail.classList.toggle('open');
      });
    });

    // Update sort arrows
    document.querySelectorAll('.svc-table th[data-sort]').forEach(function(th) {
      const arrow = th.querySelector('.sort-arrow');
      if (th.dataset.sort === sortKey) {
        arrow.textContent = sortAsc ? ' ▲' : ' ▼';
      } else {
        arrow.textContent = '';
      }
    });
  }

  // ── Sort handler ──────────────────────────────────────────────
  document.querySelectorAll('.svc-table th[data-sort]').forEach(function(th) {
    th.addEventListener('click', function() {
      const key = this.dataset.sort;
      if (sortKey === key) { sortAsc = !sortAsc; } else { sortKey = key; sortAsc = true; }
      render();
    });
  });

  // ── Filter handler ────────────────────────────────────────────
  $('filter-input').addEventListener('input', function() {
    filterText = this.value;
    render();
  });

  // ── Discovery Log ─────────────────────────────────────────────
  function addLog(type, msg) {
    logEntries.unshift({ time: timeStr(), type: type, msg: msg });
    if (logEntries.length > MAX_LOG) logEntries.pop();
    renderLog();
  }

  function renderLog() {
    if (logEntries.length === 0) { $('log-empty').style.display = ''; return; }
    $('log-empty').style.display = 'none';
    let html = '';
    for (const e of logEntries) {
      html += '<div class="log-entry">'
        + '<span class="log-time">' + esc(e.time) + '</span>'
        + '<span class="log-type ' + esc(e.type) + '">' + esc(e.type) + '</span>'
        + '<span class="log-msg">' + esc(e.msg) + '</span></div>';
    }
    $('discovery-log').innerHTML = html;
  }

  // ── Polling ───────────────────────────────────────────────────
  async function poll() {
    try {
      const resp = await fetch('/v1/mdns/browser/snapshot');
      if (resp.ok) {
        snapshot = await resp.json();
        render();
        $('disconnected').classList.remove('show');
      }
    } catch (e) {
      $('disconnected').classList.add('show');
    }
  }

  function startPolling() {
    poll();
    pollTimer = setInterval(poll, POLL_INTERVAL);
  }

  // ── SSE ───────────────────────────────────────────────────────
  function connectSSE() {
    if (eventSource) eventSource.close();
    eventSource = new EventSource('/v1/mdns/browser/events');

    eventSource.addEventListener('type_found', function(e) {
      const d = JSON.parse(e.data);
      addLog('found', d.service_type || '?');
    });
    eventSource.addEventListener('resolved', function(e) {
      const d = JSON.parse(e.data);
      const ip = d.ip || '';
      const port = d.port || '';
      addLog('resolved', (d.name || '?') + (ip ? ' → ' + ip : '') + (port ? ':' + port : ''));
    });
    eventSource.addEventListener('removed', function(e) {
      const d = JSON.parse(e.data);
      addLog('removed', (d.name || '?'));
    });

    eventSource.onerror = function() {
      $('disconnected').classList.add('show');
      eventSource.close();
      setTimeout(connectSSE, 5000);
    };
    eventSource.onopen = function() {
      $('disconnected').classList.remove('show');
    };
  }

  // ── Boot ──────────────────────────────────────────────────────
  startPolling();
  connectSSE();
})();
</script>
</body>
</html>