import { NestFactory } from '@nestjs/core';
import { ValidationPipe } from '@nestjs/common';
import { SwaggerModule, DocumentBuilder } from '@nestjs/swagger';
import { AppModule } from './app.module';

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

  // Global prefix
  app.setGlobalPrefix('api/v1');

  // Validation
  app.useGlobalPipes(
    new ValidationPipe({
      whitelist: true,
      transform: true,
      forbidNonWhitelisted: true,
    }),
  );

  // CORS
  app.enableCors({
    origin: process.env.CORS_ORIGINS?.split(',') || '*',
    credentials: true,
  });

  // Swagger
  const config = new DocumentBuilder()
    .setTitle('Payment Hub API')
    .setDescription('Unified DCB Payment Aggregation Platform')
    .setVersion('1.0.0')
    .addBearerAuth() 
    .addTag('payments')
    .addTag('subscriptions')
    .build();

  const document = SwaggerModule.createDocument(app, config);
  SwaggerModule.setup('api/docs', app, document);

  app.getHttpAdapter().get('/api/swagger-json', (req, res) => {
    res.json(document);
  });

  const port = process.env.PORT || 3000;
  await app.listen(port);
  console.log(`Application is running on: http://localhost:${port}`);
  console.log(`Swagger docs: http://localhost:${port}/api/docs`);
  console.log(`Swagger docs: http://localhost:${port}/api/swagger-json`);
}
bootstrap();