// main.js — istrain dashboard. Frame chrome (hit counter, refresh / hard-reset) + mounts live panels.
// Panels follow the engine's panels/<name>/mount(el) contract (see the radio engine). Static placeholder
// panels (dispatch, detect) stay in index.html until built.
//
// Refresh policy: slow background polls + change-aware renders so the page idles at ~0% CPU (no
// compositor stutter). Manual "refresh" re-pulls now; "hard reset" kills captures + restarts all helpers (/api/supervisor/reset).

import { mountSupervisor } from '/panels/supervisor/supervisor.js';
import { mountChecklist } from '/panels/checklist/checklist.js';
// captures RESTORED 2026-07-10 — the new antenna arrived + whisper transcripts went live; the public
// node gets voiced clips pushed. activity stays SHELVED (voice activity = a correlate-graph signal).
import { mountCaptures } from '/panels/captures/captures.js';
import { mountEot } from '/panels/eot/eot.js';
import { mountCorrelate } from '/panels/correlate/correlate.js';
import { mountBot } from '/panels/bot/bot.js';
import { mountMidtrain } from '/panels/midtrain/midtrain.js';
import { mountLive } from '/panels/live/live.js';
import { mountTrains } from '/panels/trains/trains.js';
import { mountBanner } from '/panels/banner/banner.js';
import { mountErrors } from '/panels/errors/errors.js';

// --- client-side error reporter → the Errors card (rate-limited + escaped server/panel side) ---
function reportErr(msg, src, line) {
  try {
    fetch('/api/errors/report', {
      method: 'POST', headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify({ msg: String(msg).slice(0, 500), src: String(src || '').slice(0, 200), line: line || 0 }),
    }).catch(() => {});
  } catch { /* the reporter must never itself throw */ }
}
window.addEventListener('error', e => reportErr(e.message, e.filename, e.lineno));
window.addEventListener('unhandledrejection', e => reportErr('unhandledrejection: ' + ((e.reason && e.reason.message) || e.reason), location.pathname, 0));

// --- hit counter (change-aware; shows "—" until the server exists) ---
let lastHits = null;
async function loadHits() {
  try {
    const r = await fetch('/api/hits', { cache: 'no-store' });
    if (!r.ok) return;
    const { unique, total } = await r.json();
    const key = unique + '/' + total;
    if (key === lastHits) return;                 // no change → no DOM write
    lastHits = key;
    if (unique != null) document.getElementById('hits-unique').textContent = unique.toLocaleString();
    if (total != null)  document.getElementById('hits-total').textContent  = total.toLocaleString();
  } catch { /* no server yet — leave the dashes */ }
}

// --- build stamp: the commit this dashboard serves (VM: git; NAS: VERSION stamped by fetch-app.sh) ---
async function loadVersion() {
  try {
    const r = await fetch('/api/version', { cache: 'no-store' });
    if (!r.ok) return;
    const { commit } = await r.json();
    if (commit) document.getElementById('ver').textContent = commit;
  } catch { /* leave the dash */ }
}

// --- unique visitor: a persistent client token (robust behind the tunnel, where the real IP collapses) ---
function recordVisit() {
  let vid = localStorage.getItem('istrain_vid');
  if (!vid) {
    vid = (window.crypto && crypto.randomUUID) ? crypto.randomUUID()
        : (Date.now().toString(16) + '-' + Math.floor(Math.random() * 0xffffffff).toString(16));
    localStorage.setItem('istrain_vid', vid);
  }
  fetch('/api/hit?vid=' + encodeURIComponent(vid), { cache: 'no-store' }).catch(() => {}).finally(loadHits);
}

// --- live panels ---
const supervisor = mountSupervisor(document.getElementById('supervisor'));
const checklist = mountChecklist(document.getElementById('checklist'));
const banner = mountBanner(document.getElementById('istrain-banner'));
const trains = mountTrains(document.getElementById('trains'));
const eot = mountEot(document.getElementById('eot'));
const correlate = mountCorrelate(document.getElementById('correlate'));
const bot = mountBot(document.getElementById('bot'));
const midtrain = mountMidtrain(document.getElementById('midtrain'));
const live = mountLive(document.getElementById('live'));
const captures = mountCaptures(document.getElementById('captures'));
const errors = mountErrors(document.getElementById('errors'));

// --- controls ---
document.getElementById('btn-refresh').onclick = () => { loadHits(); banner.refresh(); supervisor.refresh(); checklist.refresh(); trains.refresh(); eot.refresh(); correlate.refresh(); bot.refresh(); midtrain.refresh(); errors.refresh(); captures.refresh(); };
document.getElementById('btn-reset').onclick = async () => {
  if (!confirm('Hard reset — kill the captures and restart all istrain helpers? Frees the dongles; device-level DVB resets still need cmd-palette.')) return;
  const b = document.getElementById('btn-reset'), t = b.textContent;
  b.disabled = true; b.textContent = 'resetting…';
  try { await fetch('/api/supervisor/reset', { method: 'POST', headers: { 'X-Ops': '1' } }); } catch {}
  setTimeout(() => { b.disabled = false; b.textContent = t; supervisor.refresh(); eot.refresh(); correlate.refresh(); }, 3500);
};

// initial pull + a slow safety poll (manual refresh drives the rest)
recordVisit();                   // beacon once per load (mints/sends the visitor token), then shows counts
loadVersion();                   // header build stamp — once per load
setInterval(loadHits, 600000);   // 10 min