news screen enhancement - 1

bin/daily-screen.ts

@@ -0,0 +1,92 @@
+/**
+ * Daily screening job — keeps the signal snapshot ledger (PRODUCT.md P0.1)
+ * accumulating even when nobody opens the UI.
+ *
+ * Universe = union of all users' watchlist tickers + all non-crypto holdings,
+ * or an explicit list passed on the command line.
+ *
+ * Usage:
+ *   npm run screen:daily                 # watchlist + holdings universe
+ *   npm run screen:daily -- AAPL MSFT    # explicit tickers
+ *
+ * Schedule for market close, e.g. crontab (4:30pm ET weekdays):
+ *   30 16 * * 1-5 cd /path/to/market_screener && npm run screen:daily
+ */
+
+import 'dotenv/config';
+import {
+  YahooFinanceClient,
+  BenchmarkProvider,
+  SignalSnapshotRepository,
+  createDb,
+  DatabaseConnection,
+  QueryAudit,
+} from '../server/domains/shared';
+import { QueryBuilder } from '../server/domains/shared/utils/QueryBuilder';
+import { ScreenerEngine } from '../server/domains/screener';
+import type { AssetResult } from '../server/domains/shared';
+
+function universeFromDb(db: DatabaseConnection): string[] {
+  const watchlist = db
+    .all<{ ticker: string }>(new QueryBuilder('UNIVERSE_QUERIES.DISTINCT_WATCHLIST_TICKERS'))
+    .map((r) => r.ticker);
+  const holdings = db
+    .all<{ ticker: string }>(new QueryBuilder('UNIVERSE_QUERIES.DISTINCT_HOLDING_TICKERS'))
+    .map((r) => r.ticker);
+  return [...new Set([...watchlist, ...holdings])].sort();
+}
+
+const db = new DatabaseConnection(createDb(process.env.DB_PATH ?? './market-screener.db'), {
+  audit: new QueryAudit(),
+  logSlowQueries: 100,
+});
+
+const cliTickers = process.argv.slice(2).map((t) => t.toUpperCase());
+const tickers = cliTickers.length > 0 ? cliTickers : universeFromDb(db);
+
+if (tickers.length === 0) {
+  console.log('No tickers to screen — watchlist and holdings are empty.');
+  console.log('Pass tickers explicitly: npm run screen:daily -- AAPL MSFT');
+  process.exit(0);
+}
+
+console.log(`Screening ${tickers.length} tickers: ${tickers.join(', ')}`);
+
+const yahoo = new YahooFinanceClient();
+const benchmark = new BenchmarkProvider(yahoo);
+const engine = new ScreenerEngine(yahoo, benchmark);
+const snapshots = new SignalSnapshotRepository(db);
+
+try {
+  const results = await engine.screenWithProgress(tickers);
+  const rateRegime = results.marketContext?.rateRegime ?? null;
+
+  const assets = [...results.STOCK, ...results.ETF, ...results.BOND] as AssetResult[];
+  const written = snapshots.recordBatch(
+    assets.map((r) => ({
+      ticker: r.asset.ticker,
+      assetType: r.asset.type,
+      price: r.asset.currentPrice ?? null,
+      signal: r.signal,
+      fundamental: r.fundamental,
+      inflated: r.inflated,
+      rateRegime,
+    })),
+  );
+
+  const bySignal = new Map<string, number>();
+  for (const a of assets) bySignal.set(a.signal, (bySignal.get(a.signal) ?? 0) + 1);
+
+  console.log(`\nSnapshots written: ${written}`);
+  for (const [signal, count] of [...bySignal.entries()].sort()) {
+    console.log(`  ${signal}: ${count}`);
+  }
+  if (results.ERROR.length > 0) {
+    console.log(`Errors (${results.ERROR.length}):`);
+    for (const e of results.ERROR) console.log(`  ${e.ticker}: ${e.message}`);
+  }
+  process.exit(0);
+} catch (err) {
+  console.error('Daily screen failed:', (err as Error).message);
+  process.exit(1);
+}