IndexedDB search library (1000x100, 15-day copies, Update search), server video metadata for instant local results

server/search-cache.js

@@ -58,3 +58,38 @@ export async function stats() {
   const t = (await db.execute('SELECT COUNT(*) AS n, COALESCE(SUM(size),0) AS b FROM search_cache')).rows[0];
   return { queries: Number(t.n), bytes: Number(t.b), maxQueries: MAX_ROWS, maxBytes: MAX_BYTES };
 }
+
+// ---- Known-video metadata: instant results while YouTube loads ----
+export const MAX_VIDEOS = Number(process.env.VIDEO_META_MAX) || 500_000;
+
+export async function rememberVideos(cards) {
+  const now = Date.now();
+  const rows = (cards || []).filter((c) => c && typeof c.id === 'string' && c.title);
+  if (!rows.length) return;
+  await db.batch(rows.map((c) => ({
+    sql: `INSERT INTO video_meta (id, card, hay, seen, updated_at) VALUES (?,?,?,1,?)
+          ON CONFLICT(id) DO UPDATE SET card=excluded.card, hay=excluded.hay, seen=seen+1, updated_at=excluded.updated_at`,
+    args: [c.id, JSON.stringify(c), `${c.title} ${c.channel || ''}`.toLowerCase(), now],
+  })));
+  if (Math.random() < 0.02) trimVideos().catch(() => {});
+}
+
+// Cards whose title/channel contain EVERY word of the query, most-seen first.
+export async function searchVideos(q, limit = 60) {
+  const words = String(q).toLowerCase().split(/\s+/).filter(Boolean).slice(0, 8);
+  if (!words.length) return [];
+  const like = (w) => '%' + w.replace(/[\\%_]/g, '\\$&') + '%';
+  const r = await db.execute({
+    sql: `SELECT card FROM video_meta WHERE ${words.map(() => "hay LIKE ? ESCAPE '\\'").join(' AND ')}
+          ORDER BY seen DESC, updated_at DESC LIMIT ?`,
+    args: [...words.map(like), limit],
+  });
+  return r.rows.map((x) => { try { return JSON.parse(x.card); } catch { return null; } }).filter(Boolean);
+}
+
+export async function trimVideos(max = MAX_VIDEOS) {
+  const n = Number((await db.execute('SELECT COUNT(*) AS n FROM video_meta')).rows[0].n);
+  if (n <= max) return 0;
+  await db.execute({ sql: 'DELETE FROM video_meta WHERE id IN (SELECT id FROM video_meta ORDER BY updated_at ASC LIMIT ?)', args: [n - max] });
+  return n - max;
+}