/**
 * Fetch, parse, validate and store recent Kerala lottery results.
 *   npm run results                      last 7 days from the portal
 *   npm run results -- --days 5 --force
 *   npm run results -- --pdf-dir ./pdfs  parse PDFs you already have (no network)
 * Exit code: 0 all fine, 2 a draw was held, 3 a fetch failed.
 */
import { readdirSync, readFileSync } from 'node:fs';
import { join } from 'node:path';
import { loadConfig } from '../src/config';
import { openDb } from '../src/db';
import { runMigrations } from '../src/db/migrate';
import { processPdf, runResultsJob } from '../src/results/job';
import { hasErrors } from '../src/results/parseResult';
import { storeDraw } from '../src/results/store';

function arg(name: string): string | undefined {
  const i = process.argv.indexOf(`--${name}`);
  return i >= 0 ? process.argv[i + 1] : undefined;
}

async function main(): Promise<number> {
  const config = loadConfig();
  const db = openDb(config.dbPath);
  runMigrations(db);

  const dir = arg('pdf-dir');
  if (dir) {
    let held = 0;
    for (const f of readdirSync(dir).filter((n) => n.toLowerCase().endsWith('.pdf')).sort()) {
      const { draw, issues } = await processPdf(readFileSync(join(dir, f)));
      if (draw) storeDraw(db, draw, issues);
      if (draw && !hasErrors(issues)) {
        console.log(`${f}: ${draw.schemeCode}-${draw.drawNo} ${draw.drawDate} ready`);
      } else {
        held++;
        console.log(`${f}: HELD ${issues.map((i) => i.message).join('; ')}`);
      }
    }
    return held ? 2 : 0;
  }

  const days = arg('days');
  const today = arg('today');
  const reports = await runResultsJob({
    db,
    force: process.argv.includes('--force'),
    ...(days ? { days: Number(days) } : {}),
    ...(today ? { today } : {}),
  });
  for (const r of reports) {
    const detail = r.issues.length ? ' - ' + r.issues.map((i) => `${i.level} ${i.message}`).join('; ') : '';
    console.log(`${r.code} ${r.date}: ${r.status}${detail}`);
  }
  if (reports.some((r) => r.status === 'fetch_failed')) return 3;
  return reports.some((r) => r.status === 'held') ? 2 : 0;
}

main().then(
  (code) => process.exit(code),
  (err) => {
    console.error(err instanceof Error ? err.message : err);
    process.exit(3);
  },
);