aitori-stylist/backend/src/app.setup.ts

import { INestApplication, ValidationPipe } from '@nestjs/common';
import { ConfigService } from '@nestjs/config';
import { DocumentBuilder, SwaggerModule } from '@nestjs/swagger';
import { HttpExceptionFilter } from './common/filters/http-exception.filter';
import { ApiResponseInterceptor } from './common/interceptors/api-response.interceptor';

export function configureApp(app: INestApplication): void {
  const configService = app.get(ConfigService);

  app.setGlobalPrefix('api/v1');
  app.useGlobalPipes(
    new ValidationPipe({
      whitelist: true,
      transform: true,
      forbidNonWhitelisted: true,
    }),
  );
  app.useGlobalInterceptors(new ApiResponseInterceptor());
  app.useGlobalFilters(new HttpExceptionFilter());
  app.enableCors({
    origin: configService.get<string>('corsOrigin') ?? 'http://127.0.0.1:5173',
  });

  const document = SwaggerModule.createDocument(
    app,
    new DocumentBuilder()
      .setTitle('Aitori Backend')
      .setDescription('Backend skeleton for frontend integration')
      .setVersion('0.1.0')
      .build(),
  );

  SwaggerModule.setup('api/docs', app, document);
}