/**
 * Web CAD Backend – Entry Point
 */
import { createServer } from './server.js';
import { SqliteAdapter } from './database/SqliteAdapter.js';
import { initYjsPersistence, closeYjsPersistence } from './websocket/yjsServer.js';

const PORT = parseInt(process.env.PORT || '3001', 10);
const HOST = process.env.HOST || '0.0.0.0';
const DB_PATH = process.env.DB_PATH || '/data/web-cad.db';

async function main() {
  const db = new SqliteAdapter(DB_PATH);
  await db.init();
  await initYjsPersistence();

  const fastify = await createServer({ port: PORT, host: HOST, db });

  try {
    await fastify.listen({ port: PORT, host: HOST });
    console.log(`Web CAD Backend running on http://${HOST}:${PORT}`);
  } catch (err) {
    fastify.log.error(err);
    process.exit(1);
  }

  // Graceful shutdown
  const shutdown = async (signal: string) => {
    console.log(`Received ${signal}, shutting down gracefully...`);
    await fastify.close();
    await closeYjsPersistence();
    db.close();
    process.exit(0);
  };
  process.on('SIGTERM', () => shutdown('SIGTERM'));
  process.on('SIGINT', () => shutdown('SIGINT'));
}

main();