import { NestFactory } from '@nestjs/core';
import { RequestMethod, ValidationPipe } from '@nestjs/common';
import { ConfigService } from '@nestjs/config';
import { NestExpressApplication } from '@nestjs/platform-express';
import { AppModule } from './app.module';
import { ensureUploadsDirs, UPLOADS_ROOT } from './uploads/uploads.util';

async function bootstrap() {
  const app = await NestFactory.create<NestExpressApplication>(AppModule);
  const config = app.get(ConfigService);

  ensureUploadsDirs();
  app.useStaticAssets(UPLOADS_ROOT, { prefix: '/uploads/' });

  app.setGlobalPrefix('api', {
    exclude: [
      { path: 'get_user', method: RequestMethod.GET },
      { path: 'get_version', method: RequestMethod.GET },
      { path: 'uploads/(.*)', method: RequestMethod.GET },
    ],
  });

  const corsOriginRaw = config.get<string>(
    'CORS_ORIGIN',
    'http://localhost:5173,http://localhost:3100',
  );
  const corsOrigins = corsOriginRaw
    .split(',')
    .map((item) => item.trim())
    .filter(Boolean);

  const isDev = (config.get<string>('NODE_ENV') ?? process.env.NODE_ENV) !== 'production';

  app.enableCors({
    origin: (
      origin: string | undefined,
      callback: (err: Error | null, allow?: boolean) => void,
    ) => {
      if (!origin) {
        callback(null, true);
        return;
      }
      if (corsOrigins.includes('*') || corsOrigins.includes(origin)) {
        callback(null, true);
        return;
      }
      // Sold versions (Hamkar/Khanegi) call public /get_user cross-origin over HTTPS.
      if (/^https:\/\/[a-z0-9.-]+(?::\d+)?$/i.test(origin)) {
        callback(null, true);
        return;
      }
      // Vite روی LAN (مثلاً 172.x / 192.168.x) در توسعه
      if (
        isDev &&
        /^http:\/\/(localhost|127\.0\.0\.1|192\.168\.\d+\.\d+|172\.\d+\.\d+\.\d+|10\.\d+\.\d+\.\d+):\d+$/.test(
          origin,
        )
      ) {
        callback(null, true);
        return;
      }
      callback(null, false);
    },
    credentials: true,
  });

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

  const port = Number(config.get('PORT') ?? 3001);
  await app.listen(port);
  console.log(`SuperAdmin API listening on http://localhost:${port}`);
}

bootstrap();