{% extends "layout.html" %}
{% block body %}
<div class="page-head">
  <div>
    <h1>Kameras</h1>
    <p class="tiny">Livebilder aller Drucker.</p>
  </div>
  <span id="when"></span>
</div>
<div class="camera-grid" id="grid"></div>
{% endblock %}
{% block script %}
<script>
const labels = {
  printing: "druckt", paused: "pausiert", complete: "fertig", standby: "bereit",
  heating: "heizt", error: "Fehler", cancelled: "abgebrochen", offline: "offline"
};
const tiles = new Map();

function shownState(printer) {
  const state = printer.state || "offline";
  const hot = (printer.nozzle_target || 0) > 40 || (printer.bed_target || 0) > 30;
  if ((state === "standby" || state === "complete") && hot) return "heating";
  return state;
}

function metaLine(printer) {
  const state = shownState(printer);
  const busy = state === "printing" || state === "paused";
  const bits = [labels[state] || state];
  if (busy) {
    const pct = Math.round((printer.progress || 0) * 100);
    bits.push(pct + " %");
    const eta = finishClock(printer.remain);
    if (eta) bits.push("fertig " + eta);
    else if (hours(printer.remain)) bits.push("Rest " + hours(printer.remain));
  }
  const job = (printer.filename || "").replace(/\.gcode$/i, "").replace(/^(\d+-)+/, "");
  if (busy && job) bits.push(job);
  return bits.join(" · ");
}

function ensureTile(printer) {
  let tile = tiles.get(printer.host);
  if (tile) return tile;
  tile = document.createElement("figure");
  tile.className = "camera-tile";
  tile.dataset.host = printer.host;
  tile.innerHTML = `
    <figcaption>
      <span class="cam-name"></span>
      <span class="host"></span>
    </figcaption>
    <p class="cam-meta tiny"></p>
    <img alt="" data-role="cam">
    <a class="cam-url" href="#"></a>`;
  tiles.set(printer.host, tile);
  document.getElementById("grid").appendChild(tile);
  return tile;
}

async function refresh() {
  const printers = await api("/drucker?live=1");
  document.getElementById("when").textContent = new Date().toLocaleTimeString("de-DE", { hour: "2-digit", minute: "2-digit" });
  const grid = document.getElementById("grid");
  if (!printers.length) {
    tiles.clear();
    grid.innerHTML = '<p class="empty">Keine Drucker eingetragen.</p>';
    return;
  }
  if (grid.querySelector(".empty")) grid.innerHTML = "";
  const seen = new Set();
  for (const printer of printers) {
    seen.add(printer.host);
    const tile = ensureTile(printer);
    const state = shownState(printer);
    tile.className = "camera-tile " + state;
    tile.querySelector(".cam-name").textContent = printer.name;
    tile.querySelector(".host").textContent = printer.host;
    tile.querySelector(".cam-meta").textContent = metaLine(printer);
    const path = "/api/v1/kamera?host=" + encodeURIComponent(printer.host);
    const shown = "/api/v1/kamera?host=" + printer.host;
    const img = tile.querySelector('[data-role="cam"]');
    img.alt = "Kamera " + printer.name;
    img.src = withToken(path) + "&t=" + Math.floor(Date.now() / 2000);
    img.classList.remove("broken");
    img.onerror = () => img.classList.add("broken");
    const link = tile.querySelector(".cam-url");
    link.href = withToken(path);
    link.textContent = shown;
  }
  for (const [host, tile] of [...tiles.entries()]) {
    if (!seen.has(host)) {
      tile.remove();
      tiles.delete(host);
    }
  }
}
refresh().catch((error) => console.error(error));
setInterval(() => refresh().catch(() => {}), 5000);
</script>
{% endblock %}