import { NestFactory } from '@nestjs/core';
import { AppModule } from './app.module';
import { DocumentBuilder, SwaggerModule } from '@nestjs/swagger';
import { ValidationPipe } from '@nestjs/common';
import { useContainer } from 'class-validator';
import * as express from 'express';
import {
  ExpressAdapter,
  NestExpressApplication,
} from '@nestjs/platform-express';
import { RawBodyRequest } from './types/raw-body-request';
import { validateEnvironment } from './common/validate-env';

async function bootstrap() {
  // Fail fast if critical env vars are missing
  validateEnvironment();

  const server = express();
  const captureRawBody = (
    request: RawBodyRequest,
    _response: express.Response,
    buffer: Buffer,
  ) => {
    request.rawBody = buffer.toString('utf8');
  };

  server.use(
    express.json({
      limit: '10mb',
      verify: captureRawBody,
    }),
  );

  server.use(
    express.urlencoded({
      extended: true,
      limit: '10mb',
      verify: captureRawBody,
    }),
  );

  const app = await NestFactory.create<NestExpressApplication>(
    AppModule,
    new ExpressAdapter(server),
    {
      bodyParser: false,
    },
  );

  useContainer(app.select(AppModule), { fallbackOnErrors: true });

  if (
    process.env.ENVIRONMENT === 'development' ||
    process.env.ENVIRONMENT === 'local'
  ) {
    const swagConfig = new DocumentBuilder()
      .setTitle('IndeeHub API')
      .setDescription('This is the API for the IndeeHub application')
      .setVersion('1.0')
      .build();

    const document = SwaggerModule.createDocument(app, swagConfig);

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

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

  if (process.env.ENVIRONMENT === 'production') {
    // Build CORS origin list from FRONTEND_URL + known domains
    const origins: string[] = [
      'https://indeehub.studio',
      'https://www.indeehub.studio',
      'https://app.indeehub.studio',
      'https://bff.indeehub.studio',
    ];

    if (process.env.FRONTEND_URL) {
      origins.push(process.env.FRONTEND_URL);
    }
    if (process.env.DOMAIN) {
      origins.push(`https://${process.env.DOMAIN}`);
    }

    app.enableCors({
      origin: [...new Set(origins)],
      methods: ['GET', 'POST', 'PUT', 'PATCH', 'DELETE', 'OPTIONS'],
      credentials: true,
    });
  } else {
    app.enableCors();
  }

  await app.listen(process.env.PORT || 4000);
}

// eslint-disable-next-line unicorn/prefer-top-level-await
bootstrap().catch(console.error);