let scanInterval = null;

async function scan() {
  startScanStatusPolling();
  await apiGet(`/scan`);
}


function startScanStatusPolling() {
  if (scanInterval) clearInterval(scanInterval);

  scanInterval = setInterval(async () => {
    const res = await fetch(`/photos/scan_status.json?ts=${Date.now()}`);
    if (!res.ok) return;

    const data = await res.json();

    document.getElementById("scanProgress").textContent =
      `Progresso: ${data.current}/${data.total} (${data.percent}%)`;

    document.getElementById("scanEta").textContent =
      `ETA: ${data.eta}`;

    document.getElementById("progressBar").style.width = data.percent + "%";

    if (data.current >= data.total && data.total > 0) {
      clearInterval(scanInterval);
      scanInterval = null;
      await readDB();
    }
  }, 1000);
}