/**
 * bin/screen.ts — Market Screener CLI
 *
 * Fetches today's catalyst tickers from Yahoo Finance news,
 * screens them under both Market-Adjusted and Fundamental lenses,
 * and saves a full HTML report.
 *
 * Usage:
 *   npm start                   → Yahoo news → catalyst tickers → screen
 *   npm start -- watch          → default watchlist
 *   npm start -- AAPL MSFT VOO  → specific tickers
 */

import 'dotenv/config';
import { CatalystAnalyst } from '../server/analyst/CatalystAnalyst.js';
import { ScreenerEngine } from '../server/screener/ScreenerEngine.js';
import { HtmlReporter } from '../server/reporters/HtmlReporter.js';

const DEFAULT_WATCHLIST: string[] = [
  'PLTR',
  'AAPL',
  'MSFT',
  'TSLA',
  'O',
  'VOO',
  'QQQ',
  'BND',
  'LQD',
  'TLT',
  'IEF',
  'SHY',
  'GOVT',
  'AGG',
  'MUB',
];

async function main(): Promise<void> {
  const args = process.argv.slice(2);
  let tickers: string[] = [];

  if (args.length > 0 && args[0] !== 'watch') {
    tickers = args.map((t) => t.toUpperCase());
    console.log(`📋 Screening: ${tickers.join(', ')}\n`);
  } else if (args[0] === 'watch') {
    tickers = DEFAULT_WATCHLIST;
    console.log(`📋 Screening default watchlist (${tickers.length} tickers)\n`);
  } else {
    try {
      const { tickers: newsTickers, stories } = await new CatalystAnalyst().run();
      if (newsTickers.length === 0) {
        console.warn("⚠  No tickers in today's news — using default watchlist\n");
        tickers = DEFAULT_WATCHLIST;
      } else {
        tickers = newsTickers;
        console.log("\n📰 Stories driving today's screen:");
        stories.slice(0, 5).forEach((s) => {
          const tags = s.relatedTickers.slice(0, 3).join(', ');
          console.log(`   • ${s.title}${tags ? ` [${tags}]` : ''}`);
        });
        console.log(`\n📋 Tickers: ${tickers.join(', ')}\n`);
      }
    } catch (err) {
      console.warn(
        `⚠  Catalyst analysis failed (${(err as Error).message}) — using default watchlist\n`,
      );
      tickers = DEFAULT_WATCHLIST;
    }
  }

  try {
    const { STOCK, ETF, BOND, ERROR, marketContext } =
      await new ScreenerEngine().screenWithProgress(tickers);
    const reportPath = new HtmlReporter().generate(
      { STOCK, ETF, BOND, ERROR } as any,
      marketContext,
    );
    console.log(`\n✅  Done — report saved to: ${reportPath}\n`);
  } catch (err) {
    console.error('Screener failed:', (err as Error).message);
    process.exit(1);
  }
}

main().catch(console.error);