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dashboard.js
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273
dashboard.js
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/* ═══════════════════════════════════════════════════════════════
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Smart Mirror — Dashboard JS
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Handles: clock, polling, chart, sensor cards, log, alerts
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═══════════════════════════════════════════════════════════════ */
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'use strict';
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/* ── Config injected by Flask via data-attribute ───────────────── */
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const ROOT = document.getElementById('mirror-root');
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const POLL_MS = parseInt(ROOT.dataset.pollMs || '800', 10);
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const SENSORS = JSON.parse(ROOT.dataset.sensors || '[]');
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/* ── State ─────────────────────────────────────────────────────── */
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let lastLogCount = 0;
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let alertsSeen = 0;
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let chartHistory = []; // first numeric channel only
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/* ══════════════════════════════════════════════════════════════════
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CLOCK
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══════════════════════════════════════════════════════════════════ */
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function tickClock() {
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const now = new Date();
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const hh = String(now.getHours()).padStart(2,'0');
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const mm = String(now.getMinutes()).padStart(2,'0');
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const ss = String(now.getSeconds()).padStart(2,'0');
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const days = ['Sonntag','Montag','Dienstag','Mittwoch','Donnerstag','Freitag','Samstag'];
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const months = ['Jan','Feb','Mär','Apr','Mai','Jun','Jul','Aug','Sep','Okt','Nov','Dez'];
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const dateStr = `${days[now.getDay()]}, ${now.getDate()}. ${months[now.getMonth()]} ${now.getFullYear()}`;
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document.getElementById('clock-time').textContent = `${hh}:${mm}:${ss}`;
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document.getElementById('clock-date').textContent = dateStr;
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}
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setInterval(tickClock, 1000);
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tickClock();
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/* ══════════════════════════════════════════════════════════════════
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CANVAS CHART
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══════════════════════════════════════════════════════════════════ */
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const canvas = document.getElementById('chart');
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const ctx = canvas.getContext('2d');
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function resizeCanvas() {
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const wrap = canvas.parentElement;
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canvas.width = wrap.clientWidth - 40;
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canvas.height = 140;
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}
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window.addEventListener('resize', () => { resizeCanvas(); drawChart(); });
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resizeCanvas();
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function drawChart() {
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const W = canvas.width, H = canvas.height;
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ctx.clearRect(0, 0, W, H);
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if (chartHistory.length < 2) {
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ctx.fillStyle = 'rgba(232,244,255,.08)';
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ctx.font = `11px 'Share Tech Mono', monospace`;
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ctx.fillText('Warte auf Daten …', 8, H / 2 + 4);
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return;
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}
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const pts = chartHistory.slice(-80);
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const min = Math.min(...pts);
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const max = Math.max(...pts);
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const range = max - min || 1;
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const step = W / (pts.length - 1);
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const yPos = v => H - ((v - min) / range) * H * 0.82 - H * 0.09;
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/* grid lines */
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ctx.strokeStyle = 'rgba(255,255,255,.04)';
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ctx.lineWidth = 1;
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ctx.font = `9px 'Share Tech Mono', monospace`;
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ctx.fillStyle = 'rgba(232,244,255,.2)';
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for (let i = 0; i <= 4; i++) {
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const y = H - (i / 4) * H * 0.82 - H * 0.09;
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ctx.beginPath(); ctx.moveTo(0, y); ctx.lineTo(W, y); ctx.stroke();
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ctx.fillText((min + (i / 4) * range).toFixed(2), 4, y - 3);
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}
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/* gradient fill */
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const grad = ctx.createLinearGradient(0, 0, 0, H);
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grad.addColorStop(0, 'rgba(168,216,240,.18)');
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grad.addColorStop(1, 'rgba(168,216,240,.00)');
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ctx.beginPath();
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pts.forEach((v, i) => {
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const x = i * step, y = yPos(v);
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i === 0 ? ctx.moveTo(x, y) : ctx.lineTo(x, y);
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});
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ctx.lineTo((pts.length - 1) * step, H);
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ctx.lineTo(0, H);
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ctx.closePath();
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ctx.fillStyle = grad;
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ctx.fill();
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/* line */
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ctx.beginPath();
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pts.forEach((v, i) => {
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const x = i * step, y = yPos(v);
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i === 0 ? ctx.moveTo(x, y) : ctx.lineTo(x, y);
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});
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ctx.strokeStyle = 'rgba(168,216,240,.85)';
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ctx.lineWidth = 1.5;
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ctx.shadowColor = 'rgba(168,216,240,.4)';
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ctx.shadowBlur = 8;
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ctx.stroke();
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ctx.shadowBlur = 0;
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/* last point dot */
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const lv = pts[pts.length - 1];
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const lx = (pts.length - 1) * step;
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const ly = yPos(lv);
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ctx.beginPath();
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ctx.arc(lx, ly, 3.5, 0, Math.PI * 2);
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ctx.fillStyle = '#a8d8f0';
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ctx.shadowColor = '#a8d8f0';
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ctx.shadowBlur = 12;
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ctx.fill();
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ctx.shadowBlur = 0;
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}
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/* ══════════════════════════════════════════════════════════════════
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SENSOR TILES
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══════════════════════════════════════════════════════════════════ */
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function updateSensorTiles(values) {
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SENSORS.forEach((s, i) => {
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const idx = s.field_index;
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if (idx >= values.length) return;
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const v = values[idx];
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const tile = document.getElementById(`sc-${i}`);
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const valEl= document.getElementById(`sv-${i}`);
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if (!tile || !valEl) return;
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valEl.textContent = `${v.toFixed(2)} ${s.unit || ''}`;
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// Clear old badges
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tile.querySelectorAll('.sensor-alert-badge').forEach(b => b.remove());
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tile.classList.remove('breach-high', 'breach-low');
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const isHigh = s.notify_on_high && s.threshold_high != null && v > s.threshold_high;
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const isLow = s.notify_on_low && s.threshold_low != null && v < s.threshold_low;
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if (isHigh) {
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tile.classList.add('breach-high');
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const b = document.createElement('span');
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b.className = 'sensor-alert-badge';
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b.textContent = '↑ Grenzwert überschritten';
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tile.appendChild(b);
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} else if (isLow) {
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tile.classList.add('breach-low');
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const b = document.createElement('span');
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b.className = 'sensor-alert-badge low';
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b.textContent = '↓ Grenzwert unterschritten';
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tile.appendChild(b);
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}
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});
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}
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/* ══════════════════════════════════════════════════════════════════
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TABS
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══════════════════════════════════════════════════════════════════ */
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function switchTab(name) {
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document.querySelectorAll('.tab').forEach(t => {
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t.classList.toggle('active', t.dataset.tab === name);
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});
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document.querySelectorAll('.tab-pane').forEach(p => {
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p.classList.toggle('active', p.id === `pane-${name}`);
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});
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if (name === 'alerts') {
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const badge = document.getElementById('alert-badge');
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badge.classList.remove('visible');
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badge.textContent = '';
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}
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}
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/* ══════════════════════════════════════════════════════════════════
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MAIN POLL
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══════════════════════════════════════════════════════════════════ */
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async function poll() {
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try {
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const [dataRes, alertRes] = await Promise.all([
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fetch('/api/data'),
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fetch('/api/alerts'),
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]);
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const data = await dataRes.json();
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const alerts = await alertRes.json();
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/* ── Connection badge ── */
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const badge = document.getElementById('conn-badge');
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badge.className = `conn-badge glass ${data.status.connected ? 'ok' : 'err'}`;
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document.getElementById('conn-dot').className = 'conn-dot';
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document.getElementById('conn-text').textContent =
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data.status.connected
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? `${data.status.port} · ${data.status.baud} Bd`
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: 'Getrennt — warte …';
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/* ── Stat cards ── */
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document.getElementById('stat-total').textContent = data.status.total_lines;
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document.getElementById('stat-errors').textContent = data.status.errors;
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document.getElementById('stat-port').textContent = data.status.port;
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document.getElementById('stat-baud').textContent = `${data.status.baud} baud`;
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if (data.entries.length) {
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const latest = data.entries[data.entries.length - 1];
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const disp = latest.values?.length
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? latest.values[0].toFixed(3)
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: latest.raw.slice(0, 14);
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document.getElementById('stat-last').textContent = disp;
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document.getElementById('stat-ts').textContent = latest.ts.split('T')[1];
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if (latest.values?.length) updateSensorTiles(latest.values);
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}
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/* ── Log (new entries only, prepended) ── */
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const newEntries = data.entries.slice(-(data.entries.length - lastLogCount));
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lastLogCount = data.entries.length;
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const logPane = document.getElementById('pane-log');
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newEntries.forEach(e => {
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if (e.values?.length) chartHistory.push(e.values[0]);
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const row = document.createElement('div');
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row.className = 'log-entry';
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const numStr = e.values?.map(v => v.toFixed(3)).join(' ') || '';
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row.innerHTML =
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`<span class="log-ts">${e.ts.split('T')[1]}</span>` +
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`<span class="log-raw">${e.raw}</span>` +
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(numStr ? `<span class="log-num">${numStr}</span>` : '');
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logPane.prepend(row);
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});
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/* ── Alerts ── */
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if (alerts.length > alertsSeen) {
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const newAlerts = alerts.slice(alertsSeen);
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alertsSeen = alerts.length;
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const alertPane = document.getElementById('pane-alerts');
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if (alertsSeen === newAlerts.length) alertPane.innerHTML = '';
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newAlerts.forEach(a => {
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const row = document.createElement('div');
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row.className = 'alert-entry';
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row.innerHTML =
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`<span class="alert-icon">⚠</span>` +
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`<span class="alert-ts">${a.ts.split('T')[1]}</span>` +
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`<span class="alert-msg">${a.subject}</span>`;
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alertPane.prepend(row);
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});
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const alertBadge = document.getElementById('alert-badge');
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if (!document.getElementById('pane-alerts').classList.contains('active')) {
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alertBadge.textContent = newAlerts.length > 9 ? '9+' : newAlerts.length;
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alertBadge.classList.add('visible');
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}
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}
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drawChart();
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} catch (err) {
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console.warn('[Mirror] Poll error:', err);
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}
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setTimeout(poll, POLL_MS);
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}
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/* ── Kick off ─────────────────────────────────────────────────── */
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poll();
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