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0.1.2-beta Hinzugefügt: 08.11.2026, 02:53 · Erstellt: 07.11.2026, 19:32

index.js Hinzugefügt: Datum nicht erfasst 62,4 KB · 797 Zeilen

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1"use strict";

3const api = window.chjPlugin;

4const i18n = window.chjPluginI18n.createI18n("cs");

5const t = i18n.t;

6let endedSessionId = "";

7let sessionsLoading = false;

9// Guard every continuation, including sudo retries and dialog answers, against a server switch.

10async function sessionResult(promise, token) {

11 const value = await promise;

12 if (token !== state.generation) throw new Error("CHJ_SESSION_CHANGED");

13 return value;

14}

16// Marks a catalog key that is translated with t() only when it is shown.

17const k = (text) => text;

18const el = new Proxy({}, { get: (_target, id) => document.getElementById(id) });

19const HISTORY = 60;

20const state = {

21 generation: 0,

22 busy: false,

23 previousNetwork: new Map(),

24 previousPaging: null,

25 ramHistory: [],

26 swapHistory: [],

27 metrics: null,

28 vm: null,

29 vmBusy: false

30};

32// ---------- CPU packages and GPUs: a missing value stays "unavailable", never 0 ----------

33function node(tag, className, text) {

34 const element = document.createElement(tag);

35 if (className) element.className = className;

36 if (text !== undefined) element.textContent = text;

37 return element;

38}

39function usageRow(label, value, valueText) {

40 const row = node("div", "usage-row");

41 const head = node("div", "usage-head"); head.append(node("span", "", label), node("b", "", valueText));

  const bar = node("div", "bar"), fill = node("i"); fill.style.width = `${known(value) ? Math.min(100, Number(value)) : 0}%`; bar.append(fill);

43 row.append(head, bar);

44 return row;

45}

const unit = (value, suffix) => known(value) ? `${Number(value).toLocaleString(i18n.locale(), { maximumFractionDigits: 1 })} ${suffix}` : null;

47function renderCpuPackages(packages) {

48 const list = Array.isArray(packages) ? packages : [];

49 el.cpuPackages.replaceChildren(...list.map((cpu, index) => {

50 const card = node("div", "package");

    const facts = [t("{logical} logických · {physical} fyzických", { logical: known(cpu.logicalCores) ? cpu.logicalCores : "?", physical: known(cpu.physicalCores) ? cpu.physicalCores : "?" }), unit(cpu.frequencyMhz, "MHz"), unit(cpu.temperatureC, "°C")].filter(Boolean).join(" · ");

    card.append(usageRow(`${t("Procesor {id}", { id: index + 1 })}${cpu.model ? ` — ${cpu.model}` : ""}`, cpu.usagePercent, pctText(cpu.usagePercent)), node("small", "", facts));

53 return card;

54 }));

55}

56function gpuHint(gpu) {

  if (gpu.driver === "vfio-pci") return t("Zařízení je předané do virtuálního stroje; metriky jsou dostupné jen uvnitř něj.");

58 if (gpu.source !== "none") return known(gpu.usagePercent) ? "" : t("Tento ovladač využití GPU nehlásí.");

  if (gpu.driver === "nvidia") return t("Nástroj nvidia-smi není dostupný, proto jsou vidět jen základní údaje.");

60 return t("Pro toto zařízení nejsou metriky dostupné.");

61}

62function renderGpus(gpus) {

63 const list = Array.isArray(gpus) ? gpus : [];

64 el.gpuSummary.textContent = String(list.length);

65 if (!list.length) { el.gpuList.replaceChildren(node("p", "empty", t("Server nehlásí žádnou GPU."))); return; }

66 el.gpuList.replaceChildren(...list.map((gpu) => {

67 const card = node("article", "gpu");

68 const ids = [gpu.vendorId, gpu.deviceId].filter(Boolean).join(":");

69 card.append(node("strong", "model", gpu.name || (ids ? `PCI ${ids}` : gpu.id)));

70 card.append(usageRow(t("Využití GPU"), gpu.usagePercent, pctText(gpu.usagePercent)));

71 const memory = pct(gpu.memoryUsed, gpu.memoryTotal);

    card.append(usageRow(t("Video paměť"), memory, known(gpu.memoryUsed) && known(gpu.memoryTotal) ? `${bytes(gpu.memoryUsed)} / ${bytes(gpu.memoryTotal)}` : known(gpu.memoryUsed) ? bytes(gpu.memoryUsed) : known(gpu.memoryTotal) ? bytes(gpu.memoryTotal) : t("nedostupné")));

73 const facts = node("dl", "facts compact");

    const power = known(gpu.powerW) ? `${unit(gpu.powerW, "W")}${known(gpu.powerLimitW) ? ` / ${unit(gpu.powerLimitW, "W")}` : ""}` : null;

    for (const [label, value] of [[t("Teplota"), unit(gpu.temperatureC, "°C")], [t("Příkon"), power], [t("Takt"), unit(gpu.clockMhz, "MHz")], [t("Ventilátor"), unit(gpu.fanPercent, "%")], [t("Ovladač"), [gpu.driver, gpu.driverVersion].filter(Boolean).join(" ") || null], [t("Adresa"), [gpu.id, ids ? `(${ids})` : ""].filter(Boolean).join(" ")]]) {

76 if (!value) continue;

77 const row = node("div"); row.append(node("dt", "", label), node("dd", "", value)); facts.append(row);

78 }

79 card.append(facts);

80 const hint = gpuHint(gpu);

81 if (hint) card.append(node("small", "gpu-hint", hint));

82 return card;

83 }));

84}

86// ---------- formatting (server data is always rendered as text) ----------

87const known = (value) => value !== null && value !== undefined && Number.isFinite(Number(value));

88function bytes(value) {

89 if (!known(value)) return t("nedostupné");

90 const units = ["B", "KiB", "MiB", "GiB", "TiB"]; let amount = Number(value); let unit = 0;

91 while (Math.abs(amount) >= 1024 && unit < units.length - 1) { amount /= 1024; unit += 1; }

92 return `${amount.toLocaleString(i18n.locale(), { maximumFractionDigits: unit >= 3 ? 2 : 1 })} ${units[unit]}`;

93}

const pct = (used, total) => known(used) && known(total) && total > 0 ? Math.max(0, Math.min(100, used / total * 100)) : null;

const pctText = (value) => known(value) ? `${Number(value).toLocaleString(i18n.locale(), { maximumFractionDigits: 1 })} %` : t("nedostupné");

96function duration(seconds) {

97 if (!known(seconds)) return t("nedostupné");

98 let remaining = Math.max(0, Number(seconds)); const days = Math.floor(remaining / 86400); remaining %= 86400;

99 return `${days ? `${days} d ` : ""}${Math.floor(remaining / 3600)} h ${Math.floor((remaining % 3600) / 60)} min`;

100}

101

function setStatus(message, error = false) { el.status.textContent = message; el.status.classList.toggle("error", error); }

102function h(tag, props = {}, children = []) {

103 const node = document.createElement(tag);

104 for (const [key, value] of Object.entries(props)) {

105 if (value === undefined || value === null || value === false) continue;

106 if (key === "className") node.className = value;

107 else if (key === "text") node.textContent = String(value);

108 else if (key === "style") Object.assign(node.style, value);

109 else if (key.startsWith("on") && typeof value === "function") node.addEventListener(key.slice(2), value);

110 else if (typeof value === "boolean") node[key] = value;

111 else node.setAttribute(key, String(value));

112 }

113

  for (const child of [].concat(children)) if (child !== null && child !== undefined && child !== false) node.append(child instanceof Node ? child : String(child));

114 return node;

115}

116function parseError(error) {

117 const raw = String(error?.message || error || "");

118 const match = raw.match(/\b([A-Z][A-Z0-9]*(?:_[A-Z0-9]+)+): ([\s\S]*)$/);

119

  return match ? { code: match[1], detail: match[2].trim() } : { code: "UNKNOWN", detail: raw.replace(/^Error invoking remote method '[^']+': (?:\w*Error: )?/, "") };

120}

121const ERROR_TEXT = {

122 CHJ_CANCELLED: k("Operace byla zrušena."),

123 SUDO_NOT_PERMITTED: k("Účet SSH relace nemá oprávnění sudo; zadání hesla to nezmění."),

124 SUDO_PASSWORD_INCORRECT: k("Heslo pro sudo bylo odmítnuto."),

125 SUDO_TTY_REQUIRED: k("Politika sudo vyžaduje terminál (requiretty); CH-J ji neobchází."),

126 SESSION_NOT_CONNECTED: k("SSH relace byla odpojena; stav operace na serveru ověřte po novém připojení."),

127 REMOTE_COMMAND_TIMEOUT: k("Server neodpověděl včas."),

128 VM_BUSY: k("Na této relaci právě probíhá jiná změna virtuální paměti."),

129 VM_SWAP_BUSY: k("Na serveru právě probíhá jiná změna swapu."),

130 VM_SWAPOFF_UNSAFE: k("Deaktivace by mohla vyčerpat paměť, operace byla odmítnuta:"),

131 VM_SWAP_DISK_FULL: k("Nedostatek místa na disku:"),

132 VM_SWAP_FS_UNSUPPORTED: k("Souborový systém nepodporuje bezpečný swapfile:"),

133 VM_SWAP_SIZE_INVALID: k("Neplatná velikost (64 MiB – 64 GiB, celé MiB)."),

134 VM_SWAP_PATH_INVALID: k("Neplatná cesta swapfile:"),

135 VM_SWAP_MANUAL_ONLY: k("Tuto operaci je nutné provést ručně:"),

136 VM_SWAP_EXISTS: k("Soubor již existuje."),

137 VM_SWAP_PRIORITY_INVALID: k("Neplatná priorita: zvolte automatickou nebo celé číslo 0–32767."),

138 VM_FSTAB_AMBIGUOUS: k("V /etc/fstab je pro tento swap více záznamů; nejprve je ručně sjednoťte:"),

139 VM_FSTAB_BACKUP_FAILED: k("Zálohu /etc/fstab nelze vytvořit, nic nebylo změněno:"),

140 VM_FSTAB_WRITE_FAILED: k("/etc/fstab nelze zapsat, původní obsah zůstal:"),

141 VM_SWAPON_FAILED: k("Aktivace swapu selhala:"),

142 VM_PRIVILEGE_REQUIRED: k("Změna vyžaduje oprávnění root/sudo."),

143

  VM_WINDOWS_ELEVATION_REQUIRED: k("Změna pagefile vyžaduje relaci správce se zvýšeným tokenem (CH-J neobchází UAC)."),

144 VM_PAGEFILE_LAST: k("Jde o poslední pagefile – vyžaduje výslovné potvrzení."),

145

  VM_PAGEFILE_CRASHDUMP: k("Systémový pagefile slouží pro výpis paměti při pádu – vyžaduje výslovné potvrzení."),

146 VM_PAGEFILE_SIZE_INVALID: k("Neplatná velikost pagefile:"),

147 VM_PAGEFILE_DISK_FULL: k("Nedostatek místa na svazku:"),

148 VM_PAGEFILE_AUTOMATIC: k("Nejprve přepněte na ruční správu."),

149 METRICS_PLATFORM_UNSUPPORTED: k("Operační systém serveru nelze rozpoznat:")

150};

151function describe(error) {

152 const { code, detail } = parseError(error);

153 const base = ERROR_TEXT[code] && t(ERROR_TEXT[code]);

154 return base ? (base.endsWith(":") ? `${base} ${detail}` : base) : detail || code;

155}

156

157// ---------- charts ----------

158function drawChart(canvas, values, color) {

159 const context = canvas.getContext("2d");

160 const ratio = window.devicePixelRatio || 1;

161 const width = canvas.clientWidth || 560; const height = canvas.clientHeight || 120;

162 canvas.width = width * ratio; canvas.height = height * ratio;

163 context.setTransform(ratio, 0, 0, ratio, 0, 0);

164 context.clearRect(0, 0, width, height);

165 context.strokeStyle = "rgba(151,176,205,.15)"; context.lineWidth = 1;

166

  for (const level of [25, 50, 75]) { const y = height - (level / 100) * height; context.beginPath(); context.moveTo(0, y); context.lineTo(width, y); context.stroke(); }

167 context.strokeStyle = color; context.lineWidth = 2; context.beginPath();

168 let started = false;

169 values.forEach((value, index) => {

170 if (!known(value)) { started = false; return; }

171 const x = index * (width / (HISTORY - 1)); const y = height - (value / 100) * (height - 4) - 2;

172 if (!started) { context.moveTo(x, y); started = true; } else context.lineTo(x, y);

173 });

174 context.stroke();

175 context.fillStyle = "#8ea5bf"; context.font = "10px sans-serif";

176 const last = values.at(-1);

177 context.fillText(known(last) ? `${last.toFixed(1)} %` : "—", 6, 13);

178}

179

function pushHistory(list, value) { list.push(known(value) ? value : null); while (list.length > HISTORY) list.shift(); }

180

181// ---------- sessions and metrics ----------

182async function loadSessions() {

183 if (sessionsLoading) return;

184 sessionsLoading = true;

185 let sessions = [];

186 try { sessions = (await api.sessions.list()).filter((session) => session.state === "connected"); }

187

  catch (error) { sessionsLoading = false; setStatus(t("Relace nelze načíst: {error}", { error: describe(error) }), true); return; }

188 sessionsLoading = false;

189 const selected = el.sessionSelect.value;

190 const next = api.sessions.reconcile(endedSessionId || selected, sessions);

191 if (next.reason === "gone") endedSessionId ||= selected;

192

  el.sessionSelect.replaceChildren(new Option(sessions.length ? t("Vyberte relaci…") : t("Žádná připojená relace"), ""));

193

  for (const session of sessions) el.sessionSelect.add(new Option(api.sessions.displayName(session), session.sessionId));

194 el.sessionSelect.value = next.id;

195 if (el.sessionSelect.value !== selected) resetSession();

196 if (next.reason === "choose") api.sessions.offerChoice(el.sessionSelect, sessions, t("Vyberte relaci…"));

197 el.refreshMetricsButton.disabled = !el.sessionSelect.value;

198 if (next.reason === "gone") setStatus(t("Relace skončila. Vyberte server."), true);

199 else if (!sessions.length) setStatus(t("Nejprve se v Core připojte k serveru přes SSH."));

200}

201

202function resetSession() {

203 state.generation += 1;

204

  Object.assign(state, { previousNetwork: new Map(), previousPaging: null, ramHistory: [], swapHistory: [], metrics: null, vm: null });

205 state.busy = false; state.vmBusy = false;

206 for (const dialog of document.querySelectorAll("dialog[open]")) dialog.close();

207 el.sudoPassword.value = ""; el.vmContent.replaceChildren(); el.vmStatus.textContent = "";

208

  for (const id of ["hostname", "platform", "kernel", "uptime", "cpu", "cpuDetail", "cpuArchitecture", "cpuModel", "cpuTopology", "load", "loadDetail", "memory", "memoryDetail", "swap", "swapDetail", "disk", "diskDetail", "networkSummary", "gpuSummary", "memorySummary", "ramExplain", "swapNote", "vmPrivilege"]) el[id].textContent = "—";

209

  for (const id of ["cpuPackages", "gpuList", "cpuTypes", "networkInterfaces", "ramStack", "ramLegend", "ramFacts", "swapFacts", "swapHead", "swapRows"]) el[id].replaceChildren();

210 for (const id of ["cpuBar", "memoryBar", "swapBar", "diskBar"]) el[id].style.width = "0%";

211 drawChart(el.ramChart, [], "#6ad"); drawChart(el.swapChart, [], "#6ad");

212 el.manageVmButton.disabled = true;

213}

214

215async function loadMetrics() {

216 const requestGeneration = state.generation;

217 const sessionId = el.sessionSelect.value;

218 if (!sessionId || state.busy) return;

219 const token = state.generation;

220 state.busy = true; el.refreshMetricsButton.disabled = true;

221 try {

222 const metrics = await sessionResult(api.system.readMetrics(sessionId), requestGeneration);

223 if (token !== state.generation) return;

224 state.metrics = metrics;

225 renderMetrics(metrics);

226

    setStatus(`${t("Aktualizováno {time}", { time: new Date(metrics.collectedAt).toLocaleTimeString(i18n.locale()) })}${metrics.unavailable?.length ? ` · ${t("nedostupné zdroje: {count}", { count: metrics.unavailable.length })}` : ""}.`);

227 } catch (error) { if (requestGeneration !== state.generation) return;

228 if (token === state.generation) setStatus(describe(error), true);

229 if (parseError(error).code === "SESSION_NOT_CONNECTED") void loadSessions();

230 } finally { if (requestGeneration === state.generation) {

231 state.busy = false; el.refreshMetricsButton.disabled = !el.sessionSelect.value;

232 } }

233}

234

235// Each card renders independently: one missing metric never breaks the others.

236function safely(render) { try { render(); } catch (error) { console.error("Metric render failed", error); } }

237

238function renderMetrics(metrics) {

239 const windows = metrics.os === "windows";

240 safely(() => {

241 el.hostname.textContent = metrics.hostname || t("nedostupné");

242

    el.platform.textContent = windows ? `${metrics.osName || "Windows"}${metrics.installationType ? ` (${metrics.installationType})` : ""}` : metrics.platform || t("nedostupné");

243 el.kernelLabel.textContent = windows ? t("Sestavení") : t("Jádro");

244 el.kernel.textContent = metrics.kernel || t("nedostupné");

245 el.uptime.textContent = duration(metrics.uptimeSeconds);

246 });

247 safely(() => {

248 const cpu = metrics.cpu || {};

249 const usage = known(cpu.usagePercent) ? Number(cpu.usagePercent) : null;

250 el.cpu.textContent = usage !== null ? pctText(usage) : cpu.usagePending ? t("měřím…") : t("nedostupné");

251 el.cpuBar.style.width = `${usage ?? 0}%`;

252

    el.cpuDetail.textContent = known(cpu.logicalCores) ? t("{count} logických procesorů", { count: cpu.logicalCores }) : t("počet procesorů nedostupný");

253 el.cpuArchitecture.textContent = cpu.architecture || t("neznámá architektura");

254 el.cpuModel.textContent = cpu.model || t("Údaj o modelu CPU není dostupný.");

255

    el.cpuTopology.textContent = t("{logical} logických · {physical} fyzických · {sockets} socketů", { logical: known(cpu.logicalCores) ? cpu.logicalCores : "?", physical: known(cpu.physicalCores) ? cpu.physicalCores : t("nedostupné"), sockets: known(cpu.sockets) ? cpu.sockets : t("nedostupné") });

256 renderCpuPackages(cpu.packages); renderGpus(metrics.gpus);

257

    el.cpuTypes.textContent = Array.isArray(cpu.coreTypes) && cpu.coreTypes.length ? cpu.coreTypes.map((type) => `${type.name} ${type.count}`).join(" · ") : t("Server nerozlišuje typy jader.");

258 });

259 safely(() => {

260 if (metrics.loadAverageSupported === false) {

261 el.loadLabel.textContent = t("Zatížení (load average)");

262 el.load.textContent = t("nedostupné");

263

      el.loadDetail.textContent = `${t("Windows load average neposkytuje")}${known(metrics.processorQueueLength) ? ` · ${t("fronta procesoru {count}", { count: metrics.processorQueueLength })}` : ""}`;

264 } else {

265 el.loadLabel.textContent = t("Zatížení 1 min");

266

      el.load.textContent = known(metrics.load1) ? Number(metrics.load1).toLocaleString(i18n.locale(), { maximumFractionDigits: 2 }) : t("nedostupné");

267 el.loadDetail.textContent = t("průměrná zátěž");

268 }

269 });

270 safely(() => {

271 const total = metrics.memory?.total; const available = metrics.memory?.available;

272 const used = known(total) && known(available) ? Math.max(0, total - available) : null;

273 const usedPercent = pct(used, total);

274 el.memory.textContent = pctText(usedPercent);

275 el.memoryBar.style.width = `${usedPercent ?? 0}%`;

276 el.memoryDetail.textContent = `${bytes(used)} / ${bytes(total)}`;

277 pushHistory(state.ramHistory, usedPercent);

278 });

279 safely(() => {

280 const swap = metrics.swap || {};

281 el.swapLabel.textContent = windows ? "Pagefile" : "Swap";

282 const swapPercent = pct(swap.used, swap.total);

283

    el.swap.textContent = known(swap.total) ? (swap.total > 0 ? pctText(swapPercent) : t("neaktivní")) : t("nedostupné");

284 el.swapBar.style.width = `${swapPercent ?? 0}%`;

285

    el.swapDetail.textContent = known(swap.total) ? `${bytes(swap.used)} / ${bytes(swap.total)}` : t("údaj není dostupný");

286 pushHistory(state.swapHistory, known(swap.total) ? (swap.total > 0 ? swapPercent : 0) : null);

287 });

288 safely(() => {

289 const disk = metrics.disk || {};

290 el.diskLabel.textContent = t("Disk {mount}", { mount: disk.mount || "/" });

291 const diskPercent = pct(disk.used, disk.total);

292 el.disk.textContent = pctText(diskPercent);

293 el.diskBar.style.width = `${diskPercent ?? 0}%`;

294

    el.diskDetail.textContent = `${bytes(disk.used)} / ${bytes(disk.total)}${Array.isArray(metrics.disks) && metrics.disks.length > 1 ? ` · ${t("{count} svazků", { count: metrics.disks.length })}` : ""}`;

295 });

296 safely(() => renderNetwork(metrics.network, metrics.collectedAt));

297 safely(() => renderMemorySection(metrics));

298}

299

300function renderNetwork(network, collectedAt) {

301 const interfaces = Array.isArray(network?.interfaces) ? network.interfaces : [];

302 el.networkInterfaces.replaceChildren();

303 const collectedMs = Date.parse(collectedAt) || Date.now();

304 const next = new Map();

305 const active = interfaces.filter((item) => item.state === "up" || item.state === "active").length;

306

  el.networkSummary.textContent = interfaces.length ? `${t("{active}/{total} aktivní", { active, total: interfaces.length })}${network.defaultInterface ? ` · ${t("výchozí {name}", { name: network.defaultInterface })}` : ""}` : t("žádná rozhraní");

307

  if (!interfaces.length) el.networkInterfaces.append(h("p", { className: "empty", text: t("Nebyla nalezena žádná síťová rozhraní mimo loopback.") }));

308 for (const item of interfaces) {

309 const isUp = item.state === "up" || item.state === "active";

310 const previous = state.previousNetwork.get(item.name);

311 const seconds = previous ? Math.max(0, (collectedMs - previous.collectedMs) / 1000) : 0;

312

    const rate = (current, before) => (previous && known(current) && known(before) && seconds > 0 && current >= before ? (current - before) / seconds : null);

313 const rxRate = rate(item.rxBytes, previous?.rxBytes); const txRate = rate(item.txBytes, previous?.txBytes);

314 const traffic = known(item.rxBytes) || known(item.txBytes)

315

      ? [h("span", { className: "rx", text: `↓ ${bytes(item.rxBytes)}${rxRate !== null ? ` · ${bytes(rxRate)}/s` : ""}` }),

316

        h("span", { className: "tx", text: `↑ ${bytes(item.txBytes)}${txRate !== null ? ` · ${bytes(txRate)}/s` : ""}` })]

317

      : [h("span", { className: "rx", text: `↓ ${known(item.rxPackets) ? t("{count} paketů", { count: item.rxPackets.toLocaleString(i18n.locale()) }) : t("nedostupné")}` }),

318

        h("span", { className: "tx", text: `↑ ${known(item.txPackets) ? t("{count} paketů", { count: item.txPackets.toLocaleString(i18n.locale()) }) : t("nedostupné")}` }),

319

        item.bytesUnavailableReason ? h("span", { className: "mac", text: t("Ovladač síťové karty nehlásí přenesené bajty.") }) : null];

320 el.networkInterfaces.append(h("article", { className: "network-interface" }, [

321

      h("div", { className: "interface-heading" }, [h("strong", { className: "interface-name" }, [item.name || "unknown", item.isDefault ? h("span", { className: "default-mark", text: t("výchozí") }) : null]),

322

        h("span", { className: `state ${isUp ? "up" : "down"}`, text: isUp ? t("aktivní") : (item.state || t("neznámý")) })]),

323

      h("p", { className: "addresses", text: Array.isArray(item.addresses) && item.addresses.length ? item.addresses.join(" · ") : t("bez globální IP adresy") }),

324 item.mac ? h("p", { className: "mac", text: `MAC ${item.mac}` }) : null,

325 h("div", { className: "traffic" }, traffic)

326 ]));

327 next.set(item.name, { rxBytes: item.rxBytes, txBytes: item.txBytes, collectedMs });

328 }

329 state.previousNetwork = next;

330}

331

332// ---------- memory and virtual memory section ----------

333

const COLORS = { used: "#42a5ff", buffers: "#9b8cff", cached: "#43d6a0", reclaimable: "#2fb39a", free: "#2b3d52", inUse: "#42a5ff", modified: "#f2c463", standby: "#43d6a0" };

334

335function renderMemorySection(metrics) {

336 const windows = metrics.os === "windows";

337 const detail = metrics.memoryDetail;

338 const total = windows ? metrics.memory?.total : detail?.total ?? metrics.memory?.total;

339

  el.memorySummary.textContent = `RAM ${pctText(state.ramHistory.at(-1))} · ${windows ? "pagefile" : "swap"} ${metrics.swap && known(metrics.swap.total) && metrics.swap.total > 0 ? pctText(pct(metrics.swap.used, metrics.swap.total)) : t("neaktivní")}`;

340 drawChart(el.ramChart, state.ramHistory, "#42a5ff");

341 drawChart(el.swapChart, state.swapHistory, "#f2c463");

342 let slices = []; let facts = []; let explain = "";

343 const rate = (value) => (known(value) ? value.toFixed(1) : "—");

344 if (windows && detail) {

345

    slices = [["inUse", t("Používaná"), detail.slices.inUse], ["modified", t("Upravená (Modified)"), detail.slices.modified], ["standby", "Standby cache", detail.slices.standby], ["free", t("Volná a vynulovaná"), detail.slices.free]];

346

    facts = [[t("Fyzická RAM celkem"), bytes(total)], [t("Skutečně využitá"), `${bytes(detail.slices.inUse)} (${pctText(pct(detail.slices.inUse, total))})`], [t("Dostupná"), bytes(detail.available)], [t("Volná"), bytes(detail.slices.free)],

347

      ["Standby cache", bytes(detail.slices.standby)], ["Modified page list", bytes(detail.slices.modified)], [t("System Cache (rezidentní)"), bytes(detail.systemCache)],

348

      [t("Paměť jádra"), `${bytes((detail.kernel.pagedPool || 0) + (detail.kernel.nonpagedPool || 0))} (${t("stránkovaný pool {paged}, nestránkovaný {nonpaged}", { paged: bytes(detail.kernel.pagedPool), nonpaged: bytes(detail.kernel.nonpagedPool) })})`],

349

      ["Commit (Committed / Limit)", `${bytes(detail.commit.committed)} / ${bytes(detail.commit.limit)} (${pctText(pct(detail.commit.committed, detail.commit.limit))})`],

350

      [t("Stránkování in / out"), t("{in} / {out} stránek/s", { in: rate(detail.paging.pagesInPerSecond), out: rate(detail.paging.pagesOutPerSecond) })]];

351

    explain = t("Používaná = RAM obsazená procesy a jádrem. Dostupná = Standby cache + volná paměť, kterou Windows uvolní okamžitě. Modified obsahuje data, která se musí nejdřív zapsat. System Cache se s ostatními kategoriemi překrývá, proto není v pruhu. Commit Limit = RAM + pagefile, nejde o velikost pagefile.");

352 } else if (detail) {

353

    slices = [["used", t("Využitá (aplikace a jádro)"), detail.used], ["buffers", "Buffers", detail.buffers], ["cached", "Cache (Cached)", detail.cached], ["reclaimable", t("Uvolnitelná slab"), detail.slabReclaimable], ["free", t("Volná"), detail.free]];

354 const kernel = (detail.slab || 0) + (detail.kernelStack || 0) + (detail.pageTables || 0);

355

    facts = [[t("Fyzická RAM celkem"), bytes(detail.total)], [t("Skutečně využitá"), `${bytes(detail.used)} (${pctText(pct(detail.used, detail.total))})`], [t("Dostupná (MemAvailable)"), bytes(detail.available)], [t("Volná (MemFree)"), bytes(detail.free)],

356

      ["Cache / Buffers", `${bytes(detail.cached)} / ${bytes(detail.buffers)}`], ["Reclaimable (SReclaimable)", bytes(detail.slabReclaimable)], [t("Sdílená (Shmem, součást Cached)"), bytes(detail.shmem)],

357

      [t("Paměť jádra"), `${bytes(kernel)} (slab ${bytes(detail.slab)}, stack ${bytes(detail.kernelStack)}, page tables ${bytes(detail.pageTables)})`],

358

      ["Dirty / Writeback", `${bytes(detail.dirty)} / ${bytes(detail.writeback)}`], ["Commit (Committed_AS / CommitLimit)", `${bytes(detail.commit.committed)} / ${bytes(detail.commit.limit)}`]];

359

    explain = t("Využitá = MemTotal − MemFree − Buffers − Cached − SReclaimable (paměť, kterou nelze rychle uvolnit). Dostupná je odhad jádra, kolik lze použít bez swapování (zahrnuje volnou paměť a uvolnitelnou cache). Shmem je součástí Cached a není uvolnitelný. Kategorie v pruhu se nepřekrývají.");

360 } else {

361 facts = [[t("Fyzická RAM celkem"), bytes(total)], [t("Dostupná"), bytes(metrics.memory?.available)]];

362

    explain = t("Podrobný rozpis paměti není z tohoto serveru dostupný (např. chybí oprávnění ke čítačům).");

363 }

364

  el.ramStack.replaceChildren(...slices.map(([key, label, value]) => h("i", { title: `${label}: ${bytes(value)}`, style: { width: `${pct(value, total) ?? 0}%`, background: COLORS[key] } })));

365

  el.ramLegend.replaceChildren(...slices.map(([key, label, value]) => h("li", {}, [h("b", { style: { background: COLORS[key] } }), `${label} ${bytes(value)}`])));

366

  el.ramFacts.replaceChildren(...facts.map(([label, value]) => h("div", {}, [h("dt", { text: label }), h("dd", { text: value })])));

367 el.ramExplain.textContent = explain;

368 renderVirtual(metrics);

369}

370

371function renderVirtual(metrics) {

372 const windows = metrics.os === "windows";

373 el.virtualTitle.textContent = windows ? t("Pagefile (virtuální paměť)") : "Swap";

374 const swap = metrics.swap || {};

375 const facts = known(swap.total) && swap.total === 0

376 ? [[t("Stav"), windows ? t("žádný aktivní pagefile") : t("swap není aktivní")]]

377

    : [[t("Celková velikost"), bytes(swap.total)], [t("Využito"), `${bytes(swap.used)} (${pctText(pct(swap.used, swap.total))})`], [t("K dispozici"), bytes(swap.free)]];

378 const paging = metrics.memoryDetail?.paging;

379 if (!windows && paging && known(paging.swapInPages)) {

380 const pageSize = metrics.pageSize || 4096;

381 const now = Date.parse(metrics.collectedAt) || Date.now();

382 const previous = state.previousPaging;

383 let rates = t("měřím…");

384 if (previous && now > previous.time) {

385 const seconds = (now - previous.time) / 1000;

386

      rates = `${bytes(((paging.swapInPages - previous.in) * pageSize) / seconds)}/s in · ${bytes(((paging.swapOutPages - previous.out) * pageSize) / seconds)}/s out`;

387 }

388 state.previousPaging = { in: paging.swapInPages, out: paging.swapOutPages, time: now };

389 facts.push(["Swap-in / swap-out", rates]);

390 }

391

  if (windows && paging) facts.push([t("Stránkování in / out"), t("{in} / {out} stránek/s", { in: known(paging.pagesInPerSecond) ? paging.pagesInPerSecond.toFixed(1) : "—", out: known(paging.pagesOutPerSecond) ? paging.pagesOutPerSecond.toFixed(1) : "—" })]);

392

  if (!windows && metrics.memoryDetail?.zswap) facts.push([t("zswap (jen čtení)"), metrics.memoryDetail.zswap.enabled ? t("zapnut ({compressor}), pool {pool}", { compressor: metrics.memoryDetail.zswap.compressor || "?", pool: bytes(metrics.memoryDetail.zswapPool) }) : t("vypnut")]);

393

  el.swapFacts.replaceChildren(...facts.map(([label, value]) => h("div", {}, [h("dt", { text: label }), h("dd", { text: value })])));

394 const config = state.vm;

395 if (windows) {

396

    el.swapHead.replaceChildren(h("tr", {}, ["Pagefile", t("Alokováno"), t("Využito"), t("Maximum využití"), t("Nastaveno (min–max)")].map((text) => h("th", { text }))));

397 const rows = (metrics.pagefiles || []).map((file) => {

398 const setting = config?.pagefiles?.find((entry) => String(entry.name).toLowerCase() === file.name.toLowerCase());

399

      return h("tr", {}, [h("td", { text: file.name }), h("td", { text: bytes(file.allocated) }), h("td", { text: bytes(file.used) }), h("td", { text: bytes(file.peak) }),

400

        h("td", { text: config ? (config.automatic ? t("automaticky (Windows)") : setting?.configured ? (setting.systemManagedSize ? t("velikost spravuje systém") : `${bytes(setting.initial)} – ${bytes(setting.maximum)}`) : t("nenastaveno")) : t("načte se ve správě") })]);

401 });

402

    el.swapRows.replaceChildren(...(rows.length ? rows : [h("tr", {}, h("td", { colspan: 5, className: "empty", text: metrics.pagefiles ? t("Žádný aktivní pagefile.") : t("Údaje o pagefile nejsou dostupné (WMI/CIM odepřeno).") }))]));

403

    el.swapNote.textContent = config ? `${config.automatic ? t("Velikost pagefile spravuje Windows automaticky.") : t("Ruční správa pagefile.")}${config.restartPending ? ` ${t("Změny čekají na restart Windows.")}` : ""}` : t("Konfigurace pagefile se načte po otevření správy.");

404

    el.vmPrivilege.textContent = config ? (config.canManage ? t("Relace má zvýšený token správce.") : t("Jen pro čtení: chybí zvýšený token správce.")) : "";

405 } else {

406

    el.swapHead.replaceChildren(h("tr", {}, [t("Swap prostor"), t("Typ"), t("Velikost"), t("Využito"), t("Priorita"), t("Po restartu")].map((text) => h("th", { text }))));

407 const rows = (metrics.swapAreas || []).map((area) => {

408 const configured = config?.swapAreas?.find((entry) => entry.path === area.name);

409

      return h("tr", {}, [h("td", { text: area.name }), h("td", { text: area.type === "zram" ? "zram" : area.type === "partition" ? t("oddíl") : t("soubor") }), h("td", { text: bytes(area.size) }),

410

        h("td", { text: `${bytes(area.used)} (${pctText(pct(area.used, area.size))})` }), h("td", {}, priorityCell(configured || { active: true, priority: area.priority, effectivePriority: area.priority })), h("td", { text: config ? (configured?.persistent ? t("ano (fstab)") : t("ne")) : "—" })]);

411 });

412

    el.swapRows.replaceChildren(...(rows.length ? rows : [h("tr", {}, h("td", { colspan: 6, className: "empty", text: t("Swap není aktivní.") }))]));

413

    const zram = (metrics.memoryDetail?.zram || []).map((device) => `${t("{device}: logicky {size}, data {data} → komprimováno {compressed}, RAM {ram}", { device: device.device, size: bytes(device.diskSize), data: bytes(device.originalData), compressed: bytes(device.compressedData), ram: bytes(device.memoryUsed) })}${device.algorithm ? `, ${device.algorithm}` : ""}`);

414

    el.swapNote.textContent = [zram.length ? t("zram (jen pro čtení): {list}", { list: zram.join("; ") }) : "", config ? "" : t("Trvalost a souborové systémy se načtou po otevření správy.")].filter(Boolean).join(" ");

415 const mode = config?.privilege?.mode;

416

    el.vmPrivilege.textContent = config ? (mode === "none" ? t("Jen pro čtení: účet nemá sudo.") : mode === "sudo-password" ? t("Změny si vyžádají heslo pro sudo.") : t("Změny lze provést (root/sudo bez hesla).")) : "";

417 }

418 el.manageVmButton.disabled = !el.sessionSelect.value;

419}

420

421// ---------- dialogs ----------

422function runDialog(dialog, { init, submit } = {}) {

423 return new Promise((resolve) => {

424 const form = dialog.querySelector("form");

425 let finished = false;

426 const finish = (value) => {

427 if (finished) return; finished = true;

428 form?.removeEventListener("submit", onSubmit); dialog.removeEventListener("close", onClose);

429 for (const button of dialog.querySelectorAll("[data-close]")) button.removeEventListener("click", onClose);

430 if (dialog.open) dialog.close();

431 resolve(value);

432 };

433

    const onSubmit = async (event) => { event.preventDefault(); const value = await submit(); if (value !== undefined) finish(value); };

434 const onClose = () => finish(null);

435 form?.addEventListener("submit", onSubmit);

436 dialog.addEventListener("close", onClose);

437 for (const button of dialog.querySelectorAll("[data-close]")) button.addEventListener("click", onClose);

438 init?.();

439 if (!dialog.open) dialog.showModal();

440 });

441}

442function askSudo(label, error) {

443 return runDialog(el.sudoDialog, {

444

    init: () => { el.sudoMessage.textContent = t("Operace „{label}“ vyžaduje oprávnění správce.", { label }); el.sudoPassword.value = ""; el.sudoError.textContent = error || ""; el.sudoError.hidden = !error; setTimeout(() => el.sudoPassword.focus(), 0); },

445 submit: () => { const value = el.sudoPassword.value; el.sudoPassword.value = ""; return value || undefined; }

446 }).finally(() => { el.sudoPassword.value = ""; });

447}

448function confirmAction({ title, details, confirmLabel = t("Potvrdit"), option = "" }) {

449 return runDialog(el.confirmDialog, {

450 init: () => {

451 el.confirmTitle.textContent = title;

452 el.confirmDetails.replaceChildren(...details.map((item) => h("li", { text: item })));

453

      el.confirmOptionLabel.hidden = !option; el.confirmOptionText.textContent = option; el.confirmOption.checked = false;

454 el.confirmSubmit.textContent = confirmLabel;

455 },

456 submit: () => ({ option: el.confirmOption.checked })

457 });

458}

459function askNumber(title, label, value) {

460 return runDialog(el.confirmDialog, {

461 init: () => {

462 el.confirmTitle.textContent = title;

463 const input = h("input", { id: "numberInput", type: "number", value: String(value), "aria-label": label });

464 el.confirmDetails.replaceChildren(h("li", {}, [h("label", {}, [label, input])]));

465 el.confirmOptionLabel.hidden = true; el.confirmSubmit.textContent = t("Pokračovat");

466 setTimeout(() => input.focus(), 0);

467 },

468 submit: () => Number(document.getElementById("numberInput").value)

469 });

470}

471// Core is called without a password first; the dialog appears only when Core reports that sudo needs one.

472async function withSudo(label, invoke) {

473 const requestGeneration = state.generation;

474 try {

475 let password = ""; let attempts = 0;

476 try {

477 for (;;) {

478 try { return await sessionResult(invoke(password ? { sudoPassword: password } : {}), requestGeneration); }

479 catch (error) { if (requestGeneration !== state.generation) return;

480 const { code } = parseError(error);

481 if ((code === "SUDO_PASSWORD_REQUIRED" || code === "SUDO_PASSWORD_INCORRECT") && attempts < 3) {

482 attempts += 1;

483

            password = await sessionResult(askSudo(label, code === "SUDO_PASSWORD_INCORRECT" && password ? t("Heslo bylo odmítnuto.") : ""), requestGeneration);

484 if (!password) throw new Error(`CHJ_CANCELLED: ${t("Operace byla zrušena.")}`);

485 continue;

486 }

487 throw error;

488 }

489 }

490 } finally { password = ""; }

491 } catch (error) { if (requestGeneration !== state.generation) return; throw error; }

492}

493

494// ---------- virtual memory management (never part of the monitoring loop) ----------

495async function openVirtualMemory() {

496 const requestGeneration = state.generation;

497 try {

498 const sessionId = el.sessionSelect.value;

499 if (!sessionId) return;

500

    el.vmContent.replaceChildren(h("p", { className: "hint", text: t("Načítám konfiguraci virtuální paměti…") }));

501 el.vmStatus.textContent = "";

502 void runDialog(el.vmDialog);

503 await sessionResult(reloadVirtualMemory(sessionId, false), requestGeneration);

504 } catch (error) { if (requestGeneration !== state.generation) return; throw error; }

505}

506

507async function reloadVirtualMemory(sessionId, elevated) {

508 const requestGeneration = state.generation;

509 if (sessionId !== el.sessionSelect.value) return;

510 const token = state.generation;

511 try {

512 const run = (auth) => api.system.virtualMemory(sessionId, { ...auth, privileged: elevated });

513

    const vm = elevated ? await sessionResult(withSudo(t("Načtení konfigurace swapu"), run), requestGeneration) : await sessionResult(run({}), requestGeneration);

514 if (token !== state.generation) return;

515 state.vm = vm;

516 renderVirtualMemoryDialog(sessionId, vm);

517 if (state.metrics) renderVirtual(state.metrics);

518 } catch (error) { if (requestGeneration !== state.generation) return;

519 if (token === state.generation) el.vmStatus.textContent = describe(error);

520 }

521}

522

523function sizeInput(id, value, unit) {

524 return h("span", { className: "inline-actions" }, [

525

    h("input", { id: `${id}Value`, type: "number", min: "1", step: "1", value: String(value), "aria-label": t("Velikost") }),

526

    h("select", { id: `${id}Unit`, "aria-label": t("Jednotka") }, [h("option", { value: "MiB", text: "MiB", selected: unit === "MiB" }), h("option", { value: "GiB", text: "GiB", selected: unit === "GiB" })])

527 ]);

528}

529function readSize(id) {

530 const value = Number(document.getElementById(`${id}Value`).value);

531

  return Number.isFinite(value) ? Math.round(value * (document.getElementById(`${id}Unit`).value === "GiB" ? 1024 : 1)) : NaN;

532}

533

534// Returns { ok: true, result } or { ok: false, error } so callers can offer a safer alternative.

535async function runVmChange(sessionId, label, payload, details, option = "", { confirm = true, describeResult } = {}) {

536 const requestGeneration = state.generation;

537 try {

538 if (state.vmBusy || sessionId !== el.sessionSelect.value) return { ok: false };

539 if (confirm) {

540

      const answer = await sessionResult(confirmAction({ title: label, details, confirmLabel: t("Provést"), option }), requestGeneration);

541

      if (!answer || (option && !answer.option)) { el.vmStatus.textContent = t("Požadavek nebyl odeslán – neuložená změna byla zrušena."); return { ok: false }; }

542 }

543 state.vmBusy = true;

544 el.vmStatus.textContent = t("{label}… (změna běží na serveru)", { label });

545 for (const button of el.vmContent.querySelectorAll("button")) button.disabled = true;

546 try {

547

      const result = await sessionResult(withSudo(label, (auth) => api.system.manageVirtualMemory(sessionId, { ...payload, ...auth })), requestGeneration);

548

      const steps = (result.steps || []).map((step) => `${step.step}: ${step.status}${step.message ? ` (${step.message})` : ""}`).join(", ");

549 el.vmStatus.textContent = describeResult ? describeResult(result) : result.restartRequired

550

        ? `${t("Uloženo – čeká na restart Windows (CH-J restart neprovádí).")}${result.backup ? ` ${t("Záloha: {path}", { path: result.backup })}` : ""}`

551

        : `${t("Provedeno a ověřeno podle skutečného stavu serveru.")}${steps ? ` ${t("Kroky: {steps}.", { steps })}` : ""}`;

552

      if (result.state) { state.vm = { ...state.vm, ...result.state }; renderVirtualMemoryDialog(sessionId, state.vm); if (state.metrics) renderVirtual(state.metrics); }

553 else await sessionResult(reloadVirtualMemory(sessionId, false), requestGeneration);

554 void loadMetrics();

555 return { ok: true, result };

556 } catch (error) { if (requestGeneration !== state.generation) return;

557 el.vmStatus.textContent = t("Nebylo provedeno: {error}", { error: describe(error) });

558 // Show the server's real state again after a failed change.

559 void reloadVirtualMemory(sessionId, false);

560 return { ok: false, error: parseError(error) };

561 } finally { if (requestGeneration === state.generation) {

562 state.vmBusy = false;

563 for (const button of el.vmContent.querySelectorAll("button")) button.disabled = false;

564 } }

565 } catch (error) { if (requestGeneration !== state.generation) return; throw error; }

566}

567

568function renderVirtualMemoryDialog(sessionId, vm) {

569 const children = vm.platform === "windows" ? windowsDialog(sessionId, vm) : linuxDialog(sessionId, vm);

570 el.vmContent.replaceChildren(...children);

571}

572

573function windowsDialog(sessionId, vm) {

574

  const children = [h("p", { className: "hint", text: t("Správa: {management} · Commit Limit {limit} (RAM + pagefile, nejde o velikost pagefile) · výpis paměti při pádu: {dump}", { management: vm.automatic === null ? t("nelze zjistit") : vm.automatic ? t("automatická (Windows)") : t("ruční"), limit: bytes(vm.commit.limit), dump: vm.crashDumpEnabled ? t("zapnut") : t("vypnut") }) })];

575

  if (vm.restartPending) children.push(h("p", {}, h("span", { className: "pill warn", text: t("Čeká na restart: {changes}", { changes: vm.pendingChanges.map((change) => change.description).join("; ") || t("konfigurace se liší od aktivní") }) })));

576 if (!vm.canManage) children.push(h("p", { className: "error", text: vm.readOnlyReason }));

577 children.push(h("div", { className: "table-wrap" }, h("table", {}, [

578

    h("thead", {}, h("tr", {}, ["Pagefile", t("Aktivní"), t("Alokováno"), t("Využito / maximum"), t("Nastaveno"), t("Volné místo"), ""].map((text) => h("th", { text })))),

579

    h("tbody", {}, vm.pagefiles.map((file) => h("tr", {}, [h("td", { text: file.name }), h("td", { text: file.active ? t("ano") : t("ne (po restartu)") }), h("td", { text: bytes(file.allocated) }), h("td", { text: `${bytes(file.used)} / ${bytes(file.peak)}` }),

580

      h("td", { text: file.configured ? (file.systemManagedSize ? t("systémová velikost") : `${bytes(file.initial)} – ${bytes(file.maximum)}`) : vm.automatic ? t("automaticky") : "—" }), h("td", { text: bytes(file.volumeFree) }),

581

      h("td", {}, vm.canManage && file.configured && vm.automatic === false ? h("button", { type: "button", className: "mini danger", text: t("Odebrat…"), onclick: () => removePagefile(sessionId, vm, file) }) : null)])))])));

582 if (vm.canManage) {

583

    if (vm.automatic === false) children.push(h("div", { className: "inline-actions" }, h("button", { type: "button", className: "button", text: t("Vrátit automatickou správu Windows"), onclick: () => runVmChange(sessionId, t("Automatická správa pagefile"), { action: "automatic" }, [t("Windows bude velikost pagefile spravovat sám."), t("Změna se projeví po restartu Windows; CH-J restart neprovede.")]) })));

584 const ntfs = vm.volumes.filter((volume) => ["NTFS", "ReFS"].includes(volume.format));

585

    children.push(h("div", { className: "vm-form" }, [h("h4", { text: vm.automatic ? t("Přepnout na ruční správu a nastavit pagefile") : t("Nastavit nebo přidat pagefile") }),

586 h("div", { className: "form-grid" }, [

587

        h("label", {}, [t("Svazek"), h("select", { id: "pfDrive" }, ntfs.map((volume) => h("option", { value: volume.drive, text: t("{drive} ({format}, volno {free})", { drive: volume.drive, format: volume.format, free: bytes(volume.free) }), selected: volume.drive === vm.systemDrive })))]),

588 h("label", {}, [t("Počáteční velikost"), sizeInput("pfInitial", 1024, "MiB")]),

589 h("label", {}, [t("Maximální velikost"), sizeInput("pfMaximum", 4096, "MiB")]),

590

        h("label", { className: "check" }, [h("input", { id: "pfSystem", type: "checkbox" }), t("velikost určí systém (0/0)")])

591 ]),

592 h("p", { id: "pfError", className: "error", hidden: true }),

593

      h("div", { className: "inline-actions" }, h("button", { type: "button", className: "button primary", text: t("Uložit (čeká na restart)"), onclick: () => setPagefile(sessionId, vm) }))]));

594 }

595

  children.push(h("p", { className: "hint", text: t("Změny pagefile se uloží do konfigurace a projeví se až po restartu Windows; CH-J restart nikdy neprovádí. Velikost pagefile ovlivňuje Commit Limit a možnost uložit výpis paměti při pádu.") }));

596 return children;

597}

598

599function linuxDialog(sessionId, vm) {

600 const mode = vm.privilege?.mode;

601

  const children = [h("p", { className: "hint", text: t("{os} · oprávnění: {privilege} · RAM dostupná {ram} · swap volný {swap}", { os: vm.os || "Linux", privilege: mode === "root" ? "root" : mode === "sudo-nopasswd" ? t("sudo bez hesla") : mode === "sudo-password" ? t("sudo s heslem (vyžádá se při změně)") : t("bez sudo – jen čtení"), ram: bytes(vm.memory.available), swap: bytes(vm.memory.swapFree) }) })];

602 if (!vm.canManage) children.push(h("p", { className: "error", text: vm.readOnlyReason }));

603 children.push(h("div", { className: "table-wrap" }, h("table", {}, [

604

    h("thead", {}, h("tr", {}, [t("Swap prostor"), t("Typ / FS"), t("Velikost"), t("Využito"), t("Priorita"), t("Stav"), t("Po restartu"), t("Akce")].map((text) => h("th", { text })))),

605

    h("tbody", {}, vm.swapAreas.length ? vm.swapAreas.map((area) => swapRow(sessionId, vm, area)) : [h("tr", {}, h("td", { colspan: 8, className: "empty", text: t("Žádný swap není nakonfigurován.") }))])])));

606

  if (vm.zram.length) children.push(h("p", { className: "hint", text: t("zram zařízení jsou v této verzi jen pro čtení.") }));

607 if (vm.canManage) {

608 const supported = new Set(["ext4", "ext2/ext3", "xfs", "btrfs", "f2fs"]);

609 children.push(h("div", { className: "vm-form" }, [h("h4", { text: t("Nový swapfile") }),

610 h("div", { className: "form-grid" }, [

611

        h("label", {}, [t("Umístění"), h("select", { id: "swapDir" }, vm.locations.map((location) => h("option", { value: location.dir, disabled: !supported.has(location.fsType), text: `${location.dir} (${location.fsType}${supported.has(location.fsType) ? "" : ` – ${t("nepodporováno")}`}, ${t("volno {free}", { free: bytes(location.free) })})` })))]),

612 h("label", {}, [t("Název souboru"), h("input", { id: "swapName", value: nextSwapName(vm), maxlength: "48" })]),

613 h("label", {}, [t("Velikost"), sizeInput("swapSize", 1, "GiB")]),

614

        h("label", {}, [t("Priorita (prázdné = automatická, jinak 0–32767)"), h("input", { id: "swapPriority", type: "number", min: "0", max: "32767", value: "", placeholder: t("automatická") })]),

615

        h("label", { className: "check" }, [h("input", { id: "swapPersist", type: "checkbox", checked: true }), t("aktivovat i po restartu (/etc/fstab se zálohou)")])

616 ]),

617 h("p", { id: "swapError", className: "error", hidden: true }),

618

      h("p", { className: "hint", text: t("Swapfile se vytvoří zápisem všech bloků (dd) a mkswap, na Btrfs jako NOCOW (btrfs mkswapfile). Vyžaduje volné místo + 1 GiB rezervu. Pokud deaktivace stávajícího swapu není bezpečná, je lepší přidat nový swapfile.") }),

619

      h("div", { className: "inline-actions" }, h("button", { type: "button", className: "button primary", text: t("Vytvořit a aktivovat"), onclick: () => createSwap(sessionId) }))]));

620 }

621

  if (!vm.root && mode === "sudo-password") children.push(h("div", { className: "inline-actions" }, h("button", { type: "button", className: "button", text: t("Načíst úplnou konfiguraci (sudo)"), onclick: () => reloadVirtualMemory(sessionId, true) })));

622

  children.push(h("p", { className: "hint", text: t("Deaktivace je odmítnuta, pokud by obsah swapu nemohl bezpečně přejít do RAM (rezerva 10 % RAM, min. 512 MiB, nejvýše čtvrtina RAM; nepoužitý swap lze vypnout vždy) nebo do jiného swapu. Oddíly CH-J nemaže ani nepřerozděluje; zram a zswap jsou jen pro čtení. Úpravy /etc/fstab zachovávají ostatní řádky a vytvářejí zálohu.") }));

623 return children;

624}

625

626// Each new swap file offers a name nothing has yet, so a second and third one go through as they are.

627function nextSwapName(vm) {

628 const taken = new Set(vm.swapAreas.map((area) => String(area.path).split("/").pop()));

629 if (!taken.has("swapfile-chj")) return "swapfile-chj";

630 let number = 2;

631 while (taken.has(`swapfile-chj-${number}`)) number += 1;

632 return `swapfile-chj-${number}`;

633}

634function swapRow(sessionId, vm, area) {

635 const allowed = vm.canManage ? new Set(area.allowedActions || []) : new Set();

636 const actions = [];

637

  if (allowed.has("activate") && !area.active) actions.push(h("button", { type: "button", className: "mini", text: t("Aktivovat"), onclick: () => runVmChange(sessionId, t("Aktivace {path}", { path: area.path }), { action: "activate", path: area.path, priority: "keep" }, [t("swapon {path} s prioritou {priority}", { path: area.path, priority: area.persistentPriority ?? t("automatickou") })]) }));

638

  if (allowed.has("deactivate") && area.active) actions.push(h("button", { type: "button", className: "mini", text: t("Deaktivovat"), onclick: () => runVmChange(sessionId, t("Deaktivace {path}", { path: area.path }), { action: "deactivate", path: area.path }, [t("swapoff {path}: obsah ({used}) se přesune do RAM nebo jiného swapu.", { path: area.path, used: bytes(area.used) }), t("Před provedením se ověří dostupná RAM; při riziku se operace odmítne."), t("Záznam v /etc/fstab zůstane beze změny.")]) }));

639

  if (allowed.has("priority")) actions.push(h("button", { type: "button", className: "mini", text: t("Priorita…"), onclick: () => changePriority(sessionId, area) }));

640

  if (allowed.has("persist")) actions.push(h("button", { type: "button", className: "mini", text: area.persistent ? t("Nepoužít po restartu") : t("Použít po restartu"), onclick: () => runVmChange(sessionId, area.persistent ? t("Odebrání z /etc/fstab") : t("Přidání do /etc/fstab"), { action: "persist", path: area.path, persist: !area.persistent, priority: "keep" }, [t("/etc/fstab bude zazálohován; ostatní řádky zůstanou beze změny.")]) }));

641

  if (allowed.has("resize")) actions.push(h("button", { type: "button", className: "mini", text: t("Změnit velikost…"), onclick: () => resizeSwap(sessionId, area) }));

642

  if (allowed.has("delete")) actions.push(h("button", { type: "button", className: "mini danger", text: t("Odstranit…"), onclick: () => runVmChange(sessionId, t("Odstranění {path}", { path: area.path }), { action: "delete", path: area.path }, [area.active ? t("Soubor {path} bude deaktivován (s kontrolou paměti) a smazán.", { path: area.path }) : t("Soubor {path} bude smazán.", { path: area.path }), area.persistent ? t("Jeho záznam bude odebrán z /etc/fstab (se zálohou).") : t("Není v /etc/fstab.")]) }));

643

  const management = area.management === "partition" ? t("oddíl – velikost a odstranění jen ručně") : area.management === "read-only" ? t("jen pro čtení") : area.management === "foreign-file" ? t("soubor mimo spravované cesty – bez změny velikosti a mazání") : "";

644

  return h("tr", {}, [h("td", { text: area.path }), h("td", { text: `${area.type === "zram" ? "zram" : area.type === "partition" ? t("oddíl") : t("soubor")}${area.fsType ? ` / ${area.fsType}` : ""}` }), h("td", { text: bytes(area.size) }),

645 h("td", { text: area.active ? bytes(area.used) : "—" }), h("td", {}, priorityCell(area)),

646

    h("td", {}, h("span", { className: `pill ${area.active ? "ok" : ""}`, text: area.active ? t("aktivní") : t("neaktivní") })),

647

    h("td", { text: area.persistent ? `${t("ano")}${area.persistentByChj ? " (CH-J)" : ""}${area.systemdUnit ? ` · ${area.systemdUnit.unit}` : ""}` : t("ne") }),

648

    h("td", {}, [h("div", { className: "inline-actions" }, actions), management ? h("p", { className: "hint", text: management }) : null])]);

649}

650

651// Effective priority comes from /proc/swaps; the saved one from pri= in /etc/fstab (null = automatic).

652// Negative values are kernel-assigned automatic priorities and are shown, never offered as input.

653

function priorityLabel(value) { return value === null || value === undefined ? "—" : value < 0 ? t("{value} (automatická)", { value }) : String(value); }

654

function savedLabel(area) { return area.persistent ? (area.persistentPriority === null ? t("automatická") : String(area.persistentPriority)) : t("neuloženo (není v /etc/fstab)"); }

655function priorityCell(area) {

656

  const parts = [h("span", { text: area.active ? priorityLabel(area.effectivePriority ?? area.priority) : t("neaktivní · uloženo {saved}", { saved: savedLabel(area) }) })];

657

  if (area.active && area.precedence) parts.push(h("span", { className: "prio-note", text: area.sharedPriority ? t("{order}. pořadí · stejná priorita – střídání", { order: area.precedence }) : area.precedence === 1 ? t("1. pořadí – používá se přednostně") : t("{order}. pořadí – záloha", { order: area.precedence }) }));

658

  if (area.active && area.persistent !== undefined && (area.priorityPending || !area.persistent)) parts.push(h("span", { className: "prio-note", text: area.priorityPending ? t("uloženo {saved} – projeví se po opětovné aktivaci/restartu", { saved: savedLabel(area) }) : t("jen do restartu (není v /etc/fstab)") }));

659 return parts;

660}

661

662function askPriority(area) {

663 const custom = area.priorityMode === "custom";

664 const initial = area.persistentPriority ?? (area.active && area.priority >= 0 ? area.priority : 100);

665 return runDialog(el.priorityDialog, {

666 init: () => {

667 el.priorityFacts.replaceChildren(...[

668 t("Zařízení: {path}", { path: area.path }), t("Velikost: {size}", { size: bytes(area.size) }),

669

        t("Aktuálně aktivní priorita: {priority}", { priority: area.active ? priorityLabel(area.effectivePriority ?? area.priority) : t("swap není aktivní") }),

670 t("Uložená priorita: {priority}", { priority: savedLabel(area) })

671 ].map((text) => h("li", { text })));

672 el.priorityAuto.checked = !custom; el.priorityCustom.checked = custom;

673 el.priorityValue.value = String(initial); el.priorityValue.disabled = !custom;

674 el.priorityNow.checked = true; el.priorityLater.checked = false;

675 el.priorityApplyBox.hidden = !area.active;

676 el.priorityPersistLabel.hidden = area.persistent; el.priorityPersist.checked = !area.persistent;

677 el.priorityError.hidden = true; el.priorityError.textContent = "";

678 const sync = () => { el.priorityValue.disabled = !el.priorityCustom.checked; };

679 el.priorityAuto.onchange = sync; el.priorityCustom.onchange = sync;

680 setTimeout(() => (custom ? el.priorityValue : el.priorityAuto).focus(), 0);

681 },

682 submit: () => {

683 const mode = el.priorityCustom.checked ? "custom" : "auto";

684 const raw = el.priorityValue.value.trim();

685 if (mode === "custom" && !/^\d{1,5}$/.test(raw) || mode === "custom" && Number(raw) > 32767) {

686

        el.priorityError.textContent = t("Vlastní priorita musí být celé číslo 0–32767. Záporné hodnoty přiděluje jen Linux v automatickém režimu.");

687 el.priorityError.hidden = false; el.priorityValue.focus(); return undefined;

688 }

689

      return { priority: mode === "custom" ? Number(raw) : "auto", apply: area.active && el.priorityLater.checked ? "later" : "now", persist: !area.persistent && el.priorityPersist.checked };

690 }

691 });

692}

693

694function describePriorityResult(result) {

695

  const saved = result.steps.find((step) => step.step === "priority-saved"), runtime = result.steps.find((step) => step.step === "priority-runtime");

696

  const savedText = saved?.status === "ok" ? t("Uloženo do /etc/fstab (se zálohou).") : t("Do /etc/fstab neuloženo – platí jen do restartu.");

697

  const runtimeText = !runtime ? "" : runtime.status === "ok" ? t("Aktivní priorita je nyní {priority}.", { priority: runtime.message.replace(/^already /, "") }) : runtime.status === "pending" ? t("Na běžícím systému se projeví až při příští aktivaci nebo restartu.") : t("Swap není aktivní; priorita se použije při aktivaci.");

698 return `${savedText} ${runtimeText}`.trim();

699}

700

701async function changePriority(sessionId, area) {

702 const requestGeneration = state.generation;

703 try {

704 if (state.vmBusy) return;

705 const choice = await sessionResult(askPriority(area), requestGeneration);

706 if (!choice) return;

707

    const payload = { action: "priority", path: area.path, priority: choice.priority, apply: choice.apply, ...(choice.persist ? { persist: true } : {}) };

708 const label = t("Priorita {path}", { path: area.path });

709

    const outcome = await sessionResult(runVmChange(sessionId, label, payload, [], "", { confirm: false, describeResult: describePriorityResult }), requestGeneration);

710

    if (!outcome.ok && outcome.error?.code === "VM_SWAPOFF_UNSAFE" && area.persistent || !outcome.ok && outcome.error?.code === "VM_SWAPOFF_UNSAFE" && choice.persist) {

711

      const answer = await sessionResult(confirmAction({ title: t("Okamžitá změna není bezpečná"), confirmLabel: t("Uložit pro restart"), details: [

712

        t("Swap nyní nelze bezpečně deaktivovat – jeho obsah by se nevešel do dostupné RAM s rezervou."), t("Priorita se může uložit do /etc/fstab a projeví se při příští aktivaci nebo restartu serveru (CH-J restart neprovádí)."), t("Běžící swap zůstane beze změny.")] }), requestGeneration);

713

      if (answer) await sessionResult(runVmChange(sessionId, label, { ...payload, apply: "later" }, [], "", { confirm: false, describeResult: describePriorityResult }), requestGeneration);

714 }

715 } catch (error) { if (requestGeneration !== state.generation) return; throw error; }

716}

717

718async function resizeSwap(sessionId, area) {

719 const requestGeneration = state.generation;

720 try {

721

    const value = await sessionResult(askNumber(t("Nová velikost {path}", { path: area.path }), t("Velikost v MiB (64 – 65536)"), Math.round((area.size || 1073741824) / 1048576)), requestGeneration);

722 if (value === null) return;

723

    if (!Number.isInteger(value) || value < 64 || value > 65536) { el.vmStatus.textContent = t("Neplatná velikost (64 – 65536 MiB)."); return; }

724

    await sessionResult(runVmChange(sessionId, t("Změna velikosti {path}", { path: area.path }), { action: "resize", path: area.path, sizeMiB: value, priority: "keep" }, [

725

      area.active ? t("Swap se deaktivuje (jen pokud {used} bezpečně přejde do RAM nebo jiného swapu), znovu vytvoří a aktivuje.", { used: bytes(area.used) }) : t("Soubor se znovu vytvoří v nové velikosti."),

726 t("Nový soubor se nejprve sestaví vedle starého; při chybě se původní soubor znovu aktivuje."),

727 t("Pokud deaktivace není bezpečná, přidejte raději nový swapfile.")]), requestGeneration);

728 } catch (error) { if (requestGeneration !== state.generation) return; throw error; }

729}

730

731async function createSwap(sessionId) {

732 const requestGeneration = state.generation;

733 try {

734

    const dir = el.swapDir.value; const name = el.swapName.value.trim(); const size = readSize("swapSize"); const priorityRaw = el.swapPriority.value.trim(); const priority = priorityRaw === "" ? -1 : Number(priorityRaw);

735 const target = dir === "/" ? `/${name}` : `${dir}/${name}`;

736 let problem = "";

737

    if (!/^[A-Za-z0-9._-]{1,48}$/.test(name)) problem = t("Název smí obsahovat jen písmena, číslice, tečku, _ a -.");

738 else if (state.vm?.swapAreas?.some((area) => area.path === target)) problem = t("Soubor již existuje.");

739

    else if (dir === "/" && !/^swapfile/.test(name)) problem = t("V kořenovém adresáři musí název začínat „swapfile“.");

740

    else if (!Number.isInteger(size) || size < 64 || size > 65536) problem = t("Velikost musí být 64 MiB až 64 GiB.");

741

    else if (!Number.isInteger(priority) || priority < -1 || priority > 32767) problem = t("Priorita musí být prázdná (automatická) nebo celé číslo 0–32767.");

742 el.swapError.textContent = problem; el.swapError.hidden = !problem;

743 if (problem) return;

744

    await sessionResult(runVmChange(sessionId, t("Vytvoření {path}", { path: target }), { action: "create", path: target, sizeMiB: size, priority, persist: el.swapPersist.checked }, [

745

      t("Soubor {path}, {size}, priorita {priority}.", { path: target, size: bytes(size * 1048576), priority: priority < 0 ? t("automatická") : priority }), el.swapPersist.checked ? t("Přidá se do /etc/fstab (se zálohou).") : t("Nebude aktivní po restartu."), t("Zápis velkého souboru může trvat několik minut.")]), requestGeneration);

746 } catch (error) { if (requestGeneration !== state.generation) return; throw error; }

747}

748

749async function setPagefile(sessionId, vm) {

750 const requestGeneration = state.generation;

751 try {

752 const system = el.pfSystem.checked;

753

    const initial = system ? 0 : readSize("pfInitial"); const maximum = system ? 0 : readSize("pfMaximum"); const drive = el.pfDrive.value;

754 let problem = "";

755 if (!drive) problem = t("Vyberte svazek NTFS.");

756

    else if (!system && (!Number.isInteger(initial) || !Number.isInteger(maximum) || initial < 16 || maximum < initial)) problem = t("Počáteční velikost musí být alespoň 16 MiB a maximální alespoň počáteční.");

757 el.pfError.textContent = problem; el.pfError.hidden = !problem;

758 if (problem) return;

759

    await sessionResult(runVmChange(sessionId, `Pagefile ${drive}`, { action: "set", drive, initialMb: initial, maximumMb: maximum }, [

760

      vm.automatic ? t("Automatická správa Windows bude vypnuta (ruční správa).") : t("Ruční správa zůstane zapnutá."),

761

      system ? t("Na {drive} bude pagefile se systémem spravovanou velikostí.", { drive }) : `${drive}\\pagefile.sys: ${bytes(initial * 1048576)} – ${bytes(maximum * 1048576)}.`,

762

      t("Konfigurace se zazálohuje a projeví po restartu Windows; CH-J restart neprovede."), t("Změní se Commit Limit; příliš malý pagefile může znemožnit výpis paměti při pádu.")]), requestGeneration);

763 } catch (error) { if (requestGeneration !== state.generation) return; throw error; }

764}

765

766async function removePagefile(sessionId, vm, file) {

767 const requestGeneration = state.generation;

768 try {

769 const last = vm.pagefiles.filter((entry) => entry.configured).length <= 1;

770 const crash = file.drive === vm.systemDrive && Boolean(vm.crashDumpEnabled);

771

    await sessionResult(runVmChange(sessionId, t("Odebrání {name}", { name: file.name }), { action: "remove", drive: file.drive, confirmLast: last, confirmCrashDump: crash }, [

772 t("Konfigurace se zazálohuje; změna se projeví po restartu Windows."),

773 last ? t("Jde o POSLEDNÍ pagefile: Commit Limit klesne na velikost RAM a hrozí chyby nedostatku paměti.") : "",

774

      crash ? t("Je na systémovém svazku a výpis paměti při pádu je zapnut – bez něj se výpis nemusí uložit.") : ""].filter(Boolean),

775 last || crash ? t("Rozumím rizikům a výslovně potvrzuji odebrání") : ""), requestGeneration);

776 } catch (error) { if (requestGeneration !== state.generation) return; throw error; }

777}

778

779// ---------- events ----------

780el.closeButton.addEventListener("click", () => api.close());

781el.refreshSessionsButton.addEventListener("click", () => { void loadSessions(); });

782el.refreshMetricsButton.addEventListener("click", () => { void loadMetrics(); });

783

el.sessionSelect.addEventListener("change", () => { endedSessionId = ""; resetSession(); el.refreshMetricsButton.disabled = !el.sessionSelect.value; void loadMetrics(); });

784el.manageVmButton.addEventListener("click", () => { void openVirtualMemory(); });

785// Monitoring loop: metrics only, never configuration changes or administrative checks.

786setInterval(() => { if (!document.hidden && el.autoRefresh.checked) void loadMetrics(); }, 5000);

787

788(async () => {

789 try { i18n.setLanguage(await api.ui.getLanguage()); } catch {}

790 i18n.apply(document);

791

  api.ui.onLanguageChanged((language) => { i18n.setLanguage(language); i18n.apply(document); if (state.metrics) renderMetrics(state.metrics); void loadSessions(); });

792

  try { const info = await api.getInfo(); el.pluginVersion.textContent = `${info.name} v${info.version} · ${info.publisher}`; } catch {}

793 await loadSessions();

794 await loadMetrics();

795})().catch((error) => setStatus(describe(error), true));

796

797setInterval(() => { if (!document.hidden) void loadSessions().catch(() => {}); }, 3000);

798

SHA-256

48dc39c1d63dd8404a89a9c7104d3fe9a90da4de01dcd681a1a6606caf4d7ac0

CH-J Proprietary Software License 1.14 · Die Quellen werden unter der CH-J Proprietary Software License 1.14 bereitgestellt. Ihre Verfügbarkeit ändert die Lizenzbedingungen nicht und gewährt keine zusätzlichen Rechte.

SHA-256 des Archivs

ac8fe790f4ba60fc098f8c985fc2656cfcc6cdc21fb34b30e308a2b54e62258f