main.ts

import { NestFactory } from '@nestjs/core';
import { AppModule } from './app.module';
import { ValidationPipe } from '@nestjs/common';
import { HttpExceptionFilter } from './common/filters/http-exception.filter';
import { TransformInterceptor } from './common/interceptors/transform.interceptor';
import { ConfigService } from '@nestjs/config';
import { setupSwagger } from '../docs/swagger';

async function bootstrap() {
  const app = await NestFactory.create(AppModule);
  
  // Get config service
  const configService = app.get(ConfigService);
  
  // Enable CORS
  app.enableCors({
    origin: configService.get('app.corsOrigin'),
  });
  
  // Global validation pipe
  app.useGlobalPipes(new ValidationPipe({
    whitelist: true,
    transform: true,
    forbidUnknownValues: true,
  }));
  
  // Global exception filter
  app.useGlobalFilters(new HttpExceptionFilter());
  
  // Global response transform interceptor
  app.useGlobalInterceptors(new TransformInterceptor());
  
  // Setup Swagger
  setupSwagger(app);
  
  // Start server
  const port = configService.get('app.port');
  await app.listen(port);
  console.log(`Application is running on: http://localhost:${port}`);
}
bootstrap();