import bcrypt from 'bcryptjs';
import { initDb } from './db/index';
import { createApp } from './api/index';
import { connectAllEnabledBrokers } from './modules/mqtt/broker-manager';
import { connectAllEnabledSources } from './modules/postgres/source-manager';
import { startAllQueryTimers } from './modules/postgres/query-scheduler';
import { startAllPollers } from './modules/iobroker/state-poller';

const PORT = process.env.PORT ? parseInt(process.env.PORT) : 4000;
const DB_PATH = process.env.DB_PATH ?? './display.db';

async function main(): Promise<void> {
  // Initialize database
  const db = initDb(DB_PATH);

  // Create default admin user if no users exist
  const userCount = db
    .prepare('SELECT COUNT(*) as count FROM users')
    .get() as { count: number };

  if (userCount.count === 0) {
    const hash = bcrypt.hashSync('admin', 10);
    db.prepare(
      `INSERT INTO users (username, password_hash) VALUES (?, ?)`
    ).run('admin', hash);
    console.log('Created default admin user (admin/admin)');
  }

  // Connect all enabled MQTT brokers
  await connectAllEnabledBrokers();

  // Connect all enabled PostgreSQL sources and start query timers
  await connectAllEnabledSources();
  startAllQueryTimers();

  // Start ioBroker state pollers for all enabled sources
  startAllPollers();

  // Create and start Express app
  const app = createApp();

  app.listen(PORT, () => {
    console.log(`Middleware server running on port ${PORT}`);
  });
}

// Only run when executed directly (not during tests)
if (require.main === module) {
  main().catch((err) => {
    console.error('Fatal startup error:', err);
    process.exit(1);
  });
}

// Export createApp for tests that import from index
export { createApp };
export default createApp();