Add download stats, key deletion, batch creation, and newest-first listing.

Track landing downloads per platform/month, support admin delete and bulk key issue, and sort licenses by createdAtSec.

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/downloadStats.mjs

@@ -0,0 +1,42 @@
+export const DOWNLOAD_PLATFORMS = ['windows', 'macos', 'linux'];
+
+export function monthKeyFromDate(date = new Date()) {
+  const y = date.getUTCFullYear();
+  const m = String(date.getUTCMonth() + 1).padStart(2, '0');
+  return `${y}-${m}`;
+}
+
+export function normalizeDownloadPlatform(platform) {
+  const p = String(platform ?? '').trim().toLowerCase();
+  if (DOWNLOAD_PLATFORMS.includes(p)) return p;
+  return null;
+}
+
+export function ensureDownloadStats(data) {
+  data.downloadStats ??= { byMonth: {} };
+  data.downloadStats.byMonth ??= {};
+  return data.downloadStats;
+}
+
+export function recordDownload(data, platform, date = new Date()) {
+  const normalized = normalizeDownloadPlatform(platform);
+  if (!normalized) return { ok: false, error: 'invalid_platform' };
+
+  const stats = ensureDownloadStats(data);
+  const month = monthKeyFromDate(date);
+  stats.byMonth[month] ??= { windows: 0, macos: 0, linux: 0 };
+  stats.byMonth[month][normalized] += 1;
+  return { ok: true, month, platform: normalized, count: stats.byMonth[month][normalized] };
+}
+
+export function getDownloadStatsForMonth(data, month) {
+  const stats = ensureDownloadStats(data);
+  const row = stats.byMonth[month] ?? { windows: 0, macos: 0, linux: 0 };
+  const total = row.windows + row.macos + row.linux;
+  return { month, windows: row.windows, macos: row.macos, linux: row.linux, total };
+}
+
+export function listDownloadMonths(data) {
+  const stats = ensureDownloadStats(data);
+  return Object.keys(stats.byMonth).sort((a, b) => b.localeCompare(a));
+}

lib/licenseLogic.mjs

@@ -84,6 +84,7 @@ export function enrichLicenseEntry(pk, devices, revoked) {
     sub: pk.sub,
     pid: pk.pid,
     maxDevices: pk.maxDevices,
+    createdAtSec: pk.createdAtSec ?? null,
     expiryMode: getExpiryMode(pk),
     expiresAtSec: pk.expiresAtSec ?? null,
     validDays: pk.validDays ?? null,
@@ -95,3 +96,54 @@ export function enrichLicenseEntry(pk, devices, revoked) {
     activatedCount: devices.length,
   };
 }
+
+export function sortLicensesNewestFirst(licenses) {
+  return [...licenses].sort((a, b) => {
+    const aSec = a.createdAtSec ?? a.activatedAtSec ?? 0;
+    const bSec = b.createdAtSec ?? b.activatedAtSec ?? 0;
+    return bSec - aSec;
+  });
+}
+
+export function buildProductKeyEntry(body, { generateKey, generateSub, nowSec }) {
+  const expiry = parseProductKeyExpiry(body, nowSec);
+  if (!expiry.ok) return expiry;
+
+  const entry = {
+    key: body.key ?? generateKey(),
+    sub: body.sub ?? generateSub(),
+    pid: body.pid ?? 'dnd_player',
+    maxDevices: body.maxDevices ?? 3,
+    createdAtSec: nowSec,
+    ...(expiry.expiresAtSec != null
+      ? { expiresAtSec: expiry.expiresAtSec }
+      : { validDays: expiry.validDays }),
+  };
+
+  if (!entry.key || !entry.sub) return { ok: false, error: 'invalid_entry' };
+  return { ok: true, entry };
+}
+
+export function deleteProductKey(data, key) {
+  const idx = data.productKeys?.findIndex((x) => x.key === key) ?? -1;
+  if (idx < 0) return { ok: false, error: 'unknown_product_key' };
+
+  const pk = data.productKeys[idx];
+  data.productKeys.splice(idx, 1);
+
+  if (Array.isArray(data.revokedKeys)) {
+    data.revokedKeys = data.revokedKeys.filter((k) => k !== key);
+  }
+
+  const subStillUsed = data.productKeys.some((x) => x.sub === pk.sub);
+  if (!subStillUsed) {
+    if (data.activations && pk.sub in data.activations) {
+      delete data.activations[pk.sub];
+    }
+    if (Array.isArray(data.revokedSubs)) {
+      data.revokedSubs = data.revokedSubs.filter((s) => s !== pk.sub);
+    }
+  }
+
+  return { ok: true, deleted: pk.key, sub: pk.sub };
+}