import { app } from './app.js';
import { env } from './config/env.js';
import { tenantDb } from './config/database.js';
import { startSatSyncJob } from './jobs/sat-sync.job.js';

const PORT = parseInt(env.PORT, 10);

const server = app.listen(PORT, '0.0.0.0', () => {
  console.log(`API Server running on http://0.0.0.0:${PORT}`);
  console.log(`Environment: ${env.NODE_ENV}`);

  // Iniciar job de sincronización SAT
  if (env.NODE_ENV === 'production') {
    startSatSyncJob();
  }
});

// Graceful shutdown — close all tenant DB pools before exiting
const gracefulShutdown = async (signal: string) => {
  console.log(`${signal} received. Shutting down gracefully...`);
  server.close(() => {
    console.log('HTTP server closed');
  });
  await tenantDb.shutdown();
  process.exit(0);
};

process.on('SIGTERM', () => gracefulShutdown('SIGTERM'));
process.on('SIGINT', () => gracefulShutdown('SIGINT'));

// PM2 cluster: cross-worker cache invalidation
process.on('message', (msg: any) => {
  if (msg?.type === 'invalidate-tenant-cache' && msg.tenantId) {
    tenantDb.invalidatePool(msg.tenantId);
  }
});