require('dotenv').config();
const http = require('http');
const app = require('./app');
const { testConnection, disconnect } = require('./utils/db');
const { initializeSocket } = require('./socket');
const scheduler = require('./services/scheduler');

const PORT = process.env.PORT || 3000;

async function startServer() {
  // Test database connection
  await testConnection();

  // Create HTTP server
  const server = http.createServer(app);

  // Initialize Socket.IO
  initializeSocket(server);

  server.listen(PORT, '0.0.0.0', () => {
    console.log('=================================');
    console.log('🚀 spotlight.cam Backend Started');
    console.log('=================================');
    console.log(`Environment: ${process.env.NODE_ENV || 'development'}`);
    console.log(`Server running on port: ${PORT}`);
    console.log(`Health check: http://localhost:${PORT}/api/health`);
    console.log('=================================');
    if (process.env.ENABLE_SCHEDULER === 'true') {
      try {
        scheduler.start();
        console.log('[*] Scheduler started');
      } catch (e) {
        console.error('Failed to start scheduler:', e?.message || e);
      }
    } else {
      console.log('[*] Scheduler disabled (ENABLE_SCHEDULER != "true")');
    }
  });

  return server;
}

startServer().catch((err) => {
  console.error('Failed to start server:', err);
  process.exit(1);
});

// Graceful shutdown
process.on('SIGTERM', async () => {
  console.log('SIGTERM received, shutting down gracefully...');
  try { scheduler.stop(); } catch (_) {}
  await disconnect();
  process.exit(0);
});

process.on('SIGINT', async () => {
  console.log('SIGINT received, shutting down gracefully...');
  try { scheduler.stop(); } catch (_) {}
  await disconnect();
  process.exit(0);
});