main.ts

import { NestFactory } from '@nestjs/core';
import { ValidationPipe } from '@nestjs/common';
import { AppModule } from './app.module';
import { AllExceptionsFilter } from './common/filters/all-exceptions.filter';
import { TransformInterceptor } from './common/interceptors/transform.interceptor';
import { LoggingInterceptor } from './common/interceptors/logging.interceptor';

async function bootstrap() {
  const app = await NestFactory.create(AppModule);

  // Enable CORS
  app.enableCors({
    origin: ['http://localhost:3000', 'http://localhost:4200'],
    credentials: true,
  });

  // Global validation pipe
  app.useGlobalPipes(
    new ValidationPipe({
      whitelist: true,
      forbidNonWhitelisted: true,
      transform: true,
      transformOptions: {
        enableImplicitConversion: true,
      },
    }),
  );

  // Global exception filter
  app.useGlobalFilters(new AllExceptionsFilter());

  // Global interceptors
  app.useGlobalInterceptors(
    new TransformInterceptor(),
    new LoggingInterceptor(),
  );

  const port = process.env.PORT || 3000;
  await app.listen(port);
  console.log(`🚀 Application is running on: http://localhost:${port}`);
  console.log(`📚 Advanced NestJS Tutorial`);
}

bootstrap();