const isHuggingFaceSpace = !!process.env.HF_SPACE_ID || !!process.env.SPACE_ID;
const isProduction = process.env.NODE_ENV === 'production';

if (!isHuggingFaceSpace && !isProduction) {
  const dotenv = require('dotenv');
  const path = require('path');
  const fs = require('fs');
  
  const envPath = path.join(__dirname, '../.env');
  if (fs.existsSync(envPath)) {
    dotenv.config({ path: envPath });
    console.log(`📄 Development: Loaded .env from: ${envPath}`);
  } else {
    dotenv.config();
    console.log('📄 Development: Using default .env location');
  }
} else {
  console.log('📄 Production: Using environment variables from platform secrets');
}

import 'reflect-metadata';
import { AppDataSource } from './config/database';
import app from './app';
import { initializeAdmin } from './scripts/createAdmin';

const PORT = parseInt(process.env.PORT || process.env.SPACE_PORT || '7860', 10);

console.log('🔧 Starting server...');
console.log(`📡 Environment: ${process.env.NODE_ENV || 'development'}`);
console.log(`🌐 Port: ${PORT}`);
if (process.env.DATABASE_URL) {
  const dbUrl = process.env.DATABASE_URL;
  const masked = dbUrl.length > 60 
    ? `${dbUrl.substring(0, 30)}...${dbUrl.substring(dbUrl.length - 10)}`
    : dbUrl;
  console.log(`📊 Database URL: Set (${masked})`);
} else {
  console.log(`📊 Database URL: ❌ NOT SET`);
}

AppDataSource.initialize()
  .then(async () => {
    console.log('✅ Database connected');
    
    if (process.env.DB_SYNCHRONIZE !== 'true' && process.env.NODE_ENV === 'production') {
      try {
        console.log('🔄 Running migrations...');
        await AppDataSource.runMigrations();
        console.log('✅ Migrations completed');
      } catch (migrationError) {
        console.warn('⚠️  Migration warning:', migrationError);
      }
    }

    // Initialize permanent admin user from environment variables
    await initializeAdmin();

    app.listen(PORT, '0.0.0.0', () => {
      console.log(`🚀 Server running on port ${PORT}`);
      console.log(`🌍 Server accessible at http://0.0.0.0:${PORT}`);
      console.log(`📚 Swagger docs available at http://0.0.0.0:${PORT}/docs`);
      console.log(`❤️  Health check at http://0.0.0.0:${PORT}/health`);
    });
  })
  .catch((error) => {
    console.error('❌ Database connection failed:', error);
    console.error('Error details:', error.message);
    process.exit(1);
  });

// Graceful shutdown
process.on('SIGTERM', async () => {
  console.log('SIGTERM received, closing server...');
  await AppDataSource.destroy();
  process.exit(0);
});

process.on('SIGINT', async () => {
  console.log('SIGINT received, closing server...');
  await AppDataSource.destroy();
  process.exit(0);
});