// jobs.js — Aktivität (v3): Live-System-Metriken + Hintergrund-Jobs mit Log.
// Exportiert track(id), damit andere Panels einen Job auto-aufklappen.

import { $, esc, fmtBytes } from "../core/ui.js";

const tracked = new Set();
let JOBS = [];
let SYS = null;

export function track(id) { tracked.add(id); renderJobs(); }

const hist = { cpu: [], ram: [], gpu: [] };
const MAX_HIST = 60;

function statusBadge(s) { return s === "done" ? '<span class="badge b-run">fertig</span>' : s === "failed" ? '<span class="badge b-err">fehler</span>' : '<span class="badge b-load">läuft…</span>'; }
function dotClass(s) { return s === "done" ? "on" : s === "failed" ? "" : "load"; }

function tile(label, value, sub) {
  return `<div class="tile"><div class="t-l">${label}</div><div class="t-v">${value}</div><div class="t-s">${sub}</div></div>`;
}
function meter(label, pct) {
  const p = Math.max(0, Math.min(100, pct || 0));
  const cls = p >= 90 ? "bad" : p >= 75 ? "warn" : "";
  return `<div class="meter"><div class="meter-h"><span class="mk">${label}</span><span class="mv">${Math.round(p)} %</span></div><div class="bar ${cls}"><i style="width:${Math.max(2, p)}%"></i></div></div>`;
}
function spark(arr, varName) {
  return '<div style="display:flex;align-items:flex-end;gap:2px;height:38px;margin-top:10px">' +
    arr.map(v => `<div style="width:4px;background:var(${varName});opacity:.55;height:${Math.max(2, v)}%;border-radius:2px"></div>`).join("") + "</div>";
}

function gpuPct() {
  const g = SYS?.gpu;
  if (g && (g.vram.total + g.gtt.total) > 0) return ((g.vram.used + g.gtt.used) / (g.vram.total + g.gtt.total)) * 100;
  return 0;
}

function renderSys() {
  if (!SYS) return;
  hist.cpu.push(SYS.cpu.percent); hist.ram.push(SYS.ram.percent); hist.gpu.push(gpuPct());
  for (const k of ["cpu", "ram", "gpu"]) if (hist[k].length > MAX_HIST) hist[k].shift();

  const k = $("#act-kpis");
  if (k) k.innerHTML =
    tile("Prozessor (CPU)", `${Math.round(SYS.cpu.percent)}<small> %</small>`, SYS.cpu.temp != null ? `${Math.round(SYS.cpu.temp)}° CPU-Temp` : "Auslastung") +
    tile("Arbeitsspeicher", `${Math.round(SYS.ram.percent)}<small> %</small>`, `${fmtBytes(SYS.ram.used)} / ${fmtBytes(SYS.ram.total)}`) +
    tile("Grafikspeicher", `${Math.round(gpuPct())}<small> %</small>`, SYS.gpu_temp != null ? `${Math.round(SYS.gpu_temp)}° GPU-Temp` : "VRAM + GTT");

  const g = SYS.gpu;
  const gpuStr = g && (g.vram.total + g.gtt.total) > 0 ? `${fmtBytes(g.vram.used + g.gtt.used)} / ${fmtBytes(g.vram.total + g.gtt.total)}` : "–";
  const s = $("#act-sys");
  if (s) s.innerHTML = `
    <div class="card-h"><h3>System-Metriken (Bosgame)</h3></div>
    <div class="card-sub">Live-Auslastung deines Mini-PCs, alle 0,5 Sekunden.</div>
    <div class="kv" style="margin-bottom:6px">
      <div class="kv-row"><span class="kv-k">Arbeitsspeicher (RAM)</span><span class="kv-v">${fmtBytes(SYS.ram.used)} / ${fmtBytes(SYS.ram.total)}</span></div>
      <div class="kv-row"><span class="kv-k">Grafikspeicher (VRAM + GTT)</span><span class="kv-v">${gpuStr}</span></div>
      <div class="kv-row"><span class="kv-k">Speicherplatz (Disk)</span><span class="kv-v">${Math.round(SYS.disk.percent)} % belegt</span></div>
      <div class="kv-row"><span class="kv-k">Temperatur (GPU / CPU)</span><span class="kv-v">${SYS.gpu_temp != null ? Math.round(SYS.gpu_temp) + "°" : "–"} / ${SYS.cpu.temp != null ? Math.round(SYS.cpu.temp) + "°" : "–"}</span></div>
    </div>
    <div class="grid grid-3" style="margin-top:14px">
      <div><div class="meta text-xs">CPU-Verlauf</div>${spark(hist.cpu, "--accent")}</div>
      <div><div class="meta text-xs">RAM-Verlauf</div>${spark(hist.ram, "--purple")}</div>
      <div><div class="meta text-xs">VRAM-Verlauf</div>${spark(hist.gpu, "--on")}</div>
    </div>`;
}

function mount() {
  $("#act-head").innerHTML = `<div class="pagehead"><div>
    <h1>Aktivität</h1>
    <div class="sub">Live-Auslastung und laufende Aufgaben (Downloads, Updates) mit Protokoll.</div></div></div>`;

  $("#v-activity").innerHTML = `
    <div class="card-h"><h3>Hintergrund-Aufgaben</h3><span class="meta" id="job-count"></span></div>
    <div class="card-sub">Downloads &amp; Updates erscheinen hier mit Live-Protokoll — zum Aufklappen klicken.</div>
    <div id="jobs"></div>
    <div id="jobs-empty" class="empty-c"><div class="e-t">Gerade nichts los.</div><div class="e-s">Alles ruhig — keine laufenden Aufgaben.</div></div>`;

  $("#v-activity").addEventListener("click", e => {
    const h = e.target.closest(".job-h"); if (!h) return;
    const id = h.getAttribute("data-id");
    tracked.has(id) ? tracked.delete(id) : tracked.add(id);
    renderJobs();
  });
  if (SYS) renderSys();
}

function renderJobs() {
  const c = $("#jobs"); if (!c) return;
  $("#jobs-empty").style.display = JOBS.length ? "none" : "flex";
  const failed = JOBS.filter(j => j.state === "failed").length;
  $("#job-count").textContent = JOBS.length ? (failed ? failed + " Fehler" : JOBS.length + " gesamt") : "";
  c.innerHTML = JOBS.map(j => {
    const log = tracked.has(j.id) ? `<div class="log">${esc((j.log || []).join("\n"))}</div>` : "";
    return `<div class="job"><div class="job-h" data-id="${esc(j.id)}">
      <span class="li-dot ${dotClass(j.state)}"></span><span class="mid">${esc(j.label)}</span>${statusBadge(j.state)}</div>${log}</div>`;
  }).join("");
}

function onJobs(jobs) { JOBS = jobs || []; renderJobs(); }
function onSystem(sys) { SYS = sys; if ($("#act-sys")) renderSys(); }

export default { id: "jobs", mount, onJobs, onSystem };