`;
const stage = document.getElementById("photo_stage");
const v = document.createElement("video");
v.autoplay = true; v.muted = true; v.playsInline = true;
v.className = "nfc-photo-video";
v.srcObject = cameraStream;
stage.insertBefore(v, stage.firstChild);
v.play().catch(() => {});
document.getElementById("photo_capture").addEventListener("click", () => {
captured = _captureProfileSquare(v);
if (captured) renderPreview(); else finish();
});
document.getElementById("photo_skip").addEventListener("click", finish);
}
renderLive();
}
// ──────────────────────────────────────────────────────────────
// Wake Lock — keeps the screen on while the kiosk page is active.
// Released automatically on tab close/navigation; re-acquired on
// visibilitychange when the page comes back to the foreground.
// ──────────────────────────────────────────────────────────────
let wakeLock = null;
async function acquireWakeLock() {
if (!("wakeLock" in navigator)) {
debugLog("wakeLock: API not supported on this browser");
return;
}
if (wakeLock) {
debugLog("wakeLock: already held, skipping");
return;
}
try {
wakeLock = await navigator.wakeLock.request("screen");
debugLog("wakeLock: acquired ✓ (screen will stay on)");
wakeLock.addEventListener("release", () => {
debugLog("wakeLock: released by browser/OS");
wakeLock = null;
});
} catch (e) {
debugLog("wakeLock: request failed: " + (e && e.message));
}
}
document.addEventListener("visibilitychange", async () => {
if (document.visibilityState === "visible") {
debugLog("visibility: visible — re-acquiring wakeLock");
await acquireWakeLock();
} else {
debugLog("visibility: " + document.visibilityState);
}
});
// ──────────────────────────────────────────────────────────────
// Setup wizard activation
// ──────────────────────────────────────────────────────────────
const setupBtn = document.getElementById("nfc_setup_start");
if (setupBtn) {
setupBtn.addEventListener("click", async () => {
debugLog("setup button clicked");
unlockAudio(); // user gesture → unlock Web Audio for clock sounds
// Try Web NFC, but don't fail if absent — USB HID reader is a
// first-class alternative (works on desktops/iOS too).
let webNfcOk = false;
try {
await startNfcReader();
webNfcOk = true;
debugLog("setup: Web NFC ready ✓");
} catch (webNfcErr) {
debugLog("setup: Web NFC unavailable, continuing with USB HID — " + webNfcErr.message);
}
// USB HID listener: no permission needed, works on any platform.
startUsbHidListener();
// Local wedge daemon SSE listener (for ACR122U / PC/SC readers).
startWedgeSseListener();
// Camera: best-effort unless photoRequired forces it.
try {
await startCamera();
debugLog("setup: camera ready ✓");
} catch (camErr) {
debugLog("setup: camera failed: " + camErr.message);
if (photoRequired) {
// Only THIS path is a hard fail. Use the existing error
// render to keep DOM patterns consistent with the rest
// of this file.
stateContainer.innerHTML = `
Setup failed
${escapeHtml(camErr.message)}
Camera is required but unavailable. Either plug in a webcam, or disable "Photo Required" in Fusion Clock settings.