server.js

const mongoose = require('mongoose');
const app = require('./app');
const socketUtils = require('./utils/socket');

const DB = process.env.DATABASE.replace(
  '<PASSWORD>',
  process.env.DATABASE_PASSWORD,
);

// CONNECT TO DATABASE
mongoose
  .connect(DB, {
    maxPoolSize: 10,
    serverSelectionTimeoutMS: 5000,
    socketTimeoutMS: 45000,
  })
  .then(() => console.log('DB connection successful!'))
  .catch((err) => {
    console.log('DB connection error:', err);
  });

// START SERVER
const port = process.env.PORT || 8000;
const server = app.listen(port, () => {
  console.log(`App running on port ${port}...`);
});

const { deleteOldNotifications } = require('./utils/notificationService');

socketUtils.init(server);

// Background cleanup job for notifications (runs every 24 hours)
setInterval(
  () => {
    deleteOldNotifications().catch((err) =>
      console.error(
        'Failed to run periodic notification cleanup:',
        err.message,
      ),
    );
  },
  24 * 60 * 60 * 1000,
);

// Run cleanup once on startup
deleteOldNotifications().catch((err) =>
  console.error('Failed to run initial notification cleanup:', err.message),
);

// Graceful shutdown on unhandled rejections
process.on('unhandledRejection', (err) => {
  console.error('UNHANDLED REJECTION 💥 Shutting down...', err);
  server.close(() => {
    process.exit(1);
  });
});