#!/usr/bin/env npx tsx
/**
 * CLI: backtest GEX/VEX integrity by replaying chains as-of a timestamp.
 *
 *   npx tsx scripts/dealer-map-replay.ts --symbol IREN --as-of 2026-08-07T13:14:00.000Z
 *   npx tsx scripts/dealer-map-replay.ts --symbol IREN --from-snapshots --days 7
 *
 * Exit 1 if integrity incomplete or snapshot drift too large.
 */

import { DatabaseSync } from 'node:sqlite';
import { resolve } from 'node:path';
import { replayDealerMapAt, replayFromSnapshots } from '../src/analysis/dealerMapReplay.ts';

function arg(name: string): string | undefined {
  const i = process.argv.indexOf(name);
  if (i < 0 || i + 1 >= process.argv.length) return undefined;
  return process.argv[i + 1];
}

function has(name: string): boolean {
  return process.argv.includes(name);
}

const symbol = (arg('--symbol') ?? 'IREN').toUpperCase();
const asOf = arg('--as-of');
const days = Number(arg('--days') ?? '7');
const fromSnapshots = has('--from-snapshots');

const dbPath =
  arg('--db') ??
  resolve(process.cwd(), 'data/investor-flow.db');

const db = new DatabaseSync(dbPath, { readOnly: true });

function printResult(r: ReturnType<typeof replayDealerMapAt>) {
  console.log('---');
  console.log(r.symbol, r.asOf);
  console.log('  ok:', r.ok, '|', r.integrity.status);
  console.log('  ', r.summary);
  if (r.map?.levels.king) {
    console.log(
      '  king:',
      r.map.levels.king.strike,
      r.map.levels.king.expiry,
      `gex=${(r.map.levels.king.gex / 1000).toFixed(1)}K`,
    );
  }
  console.log(
    '  metrics:',
    JSON.stringify(r.integrity.metrics),
  );
  const fails = r.integrity.checks.filter((c) => !c.ok);
  if (fails.length) {
    console.log('  failed checks:');
    for (const c of fails) {
      console.log(`    [${c.level}] ${c.id}: ${c.detail}`);
    }
  }
}

let anyFail = false;

if (fromSnapshots) {
  const results = replayFromSnapshots(db, symbol, days);
  if (results.length === 0) {
    console.error('No snapshots for', symbol);
    process.exit(2);
  }
  for (const r of results) {
    printResult(r);
    if (!r.ok) anyFail = true;
  }
} else if (asOf) {
  const r = replayDealerMapAt(db, symbol, asOf);
  printResult(r);
  if (!r.ok) anyFail = true;
} else {
  console.error('Usage: --symbol SYM --as-of ISO | --from-snapshots [--days N] [--db path]');
  process.exit(2);
}

db.close();
process.exit(anyFail ? 1 : 0);