import { ValidationPipe } from '@nestjs/common';
import { NestFactory, Reflector } from '@nestjs/core';
import { DocumentBuilder, SwaggerModule } from '@nestjs/swagger';
import { AppModule } from './app.module';
import { GlobalExceptionFilter } from './common/filters/global-exception.filter';
import { ResponseTransformInterceptor } from './common/interceptors/response-transform.interceptor';

async function bootstrap() {
  const app = await NestFactory.create(AppModule);
  const reflector = app.get(Reflector);
  const corsOrigins = (process.env.FRONTEND_ORIGIN || 'http://localhost:5173')
    .split(',')
    .map((origin) => origin.trim())
    .filter(Boolean);

  app.enableCors({
    origin: corsOrigins,
    credentials: true,
    methods: ['GET', 'HEAD', 'PUT', 'PATCH', 'POST', 'DELETE', 'OPTIONS'],
    allowedHeaders: ['Content-Type', 'Authorization', 'x-cron-secret'],
  });
  app.setGlobalPrefix('api');
  app.useGlobalPipes(
    new ValidationPipe({
      whitelist: true,
      transform: true,
      forbidNonWhitelisted: true,
    }),
  );
  app.useGlobalInterceptors(new ResponseTransformInterceptor(reflector));
  app.useGlobalFilters(new GlobalExceptionFilter());

  const swaggerConfig = new DocumentBuilder()
    .setTitle('AECHR API')
    .setDescription('HR assessment portal backend APIs')
    .setVersion('0.1.0')
    .addBearerAuth()
    .addApiKey(
      {
        type: 'apiKey',
        name: 'x-cron-secret',
        in: 'header',
      },
      'cron-secret',
    )
    .build();

  const document = SwaggerModule.createDocument(app, swaggerConfig);
  SwaggerModule.setup('docs', app, document);

  const port = Number(process.env.PORT || 3000);
  await app.listen(port);
}

void bootstrap();