import fs from 'fs';
import path from 'path';
import { buildApp } from '../src/app';

async function generateOpenApiSpec(): Promise<void> {
  // eslint-disable-next-line no-console
  console.log('📝 Generating OpenAPI specification...');
  const app = await buildApp();

  await app.ready();

  const swaggerSpec = app.swagger();
  const outputPath = path.resolve(__dirname, '../docs/openapi.json');

  const dir = path.dirname(outputPath);
  if (!fs.existsSync(dir)) {
    fs.mkdirSync(dir, { recursive: true });
  }

  fs.writeFileSync(outputPath, JSON.stringify(swaggerSpec, null, 2));
  // eslint-disable-next-line no-console
  console.log(`✅ OpenAPI specification exported to ${outputPath}`);
  await app.close();
}

generateOpenApiSpec().catch((err: unknown) => {
  // eslint-disable-next-line no-console
  console.error('❌ Failed to generate OpenAPI spec:', err);
  process.exit(1);
});