/**
 * `npm run app:dev` — boot the content-feed app and leave it running.
 *
 * The whole point of this app is that a human clicks Like and watches the order
 * change, so there has to be a one-command way to open it. It drives the exact
 * same `startApp()` lifecycle the assertions use, so what you click is what the
 * spec ran against.
 */

import { rmSync } from 'node:fs';
import { startApp } from './harness.ts';

const app = await startApp({ verbose: true });

/**
 * Synchronous last resort. The graceful path below removes the data dir, but an
 * `exit` handler is the only thing that still runs if that path throws part-way
 * — and a stale multi-megabyte index dir in $TMPDIR is exactly the kind of litter
 * nobody goes looking for. (Nothing survives SIGKILL; that is the OS's problem.)
 */
process.on('exit', () => rmSync(app.dataDir, { recursive: true, force: true }));

console.log('');
console.log(`  content feed   ${app.url}`);
console.log(`  tidalDB node   ${app.nodeUrl}`);
console.log(`  catalog        ${Object.keys(app.groundTruth.neighboursByItem).length} items seeded`);
console.log('');
console.log('  Ctrl-C to tear down the node and remove its data dir.');
console.log('');

const shutdown = async (signal: string) => {
  console.log(`\n[app] ${signal} — closing`);
  await app.close();
  process.exit(0);
};

process.once('SIGINT', () => void shutdown('SIGINT'));
process.once('SIGTERM', () => void shutdown('SIGTERM'));