import { dirname, join } from 'node:path';
import { fileURLToPath } from 'node:url';
import type { NextConfig } from 'next';

const api = process.env.API_INTERNAL_URL ?? 'http://127.0.0.1:3001';

const nextConfig: NextConfig = {
  output: 'standalone',
  // Trace from the monorepo root so the workspace package @atm/shared is included.
  outputFileTracingRoot: join(dirname(fileURLToPath(import.meta.url)), '..'),
  transpilePackages: ['@atm/shared'],
  poweredByHeader: false,
  // In production Traefik routes /api directly to the API; the rewrite covers local development.
  async rewrites() {
    return [{ source: '/api/:path*', destination: `${api}/api/:path*` }];
  },
  async headers() {
    return [
      {
        source: '/:path*',
        headers: [
          { key: 'X-Content-Type-Options', value: 'nosniff' },
          { key: 'Referrer-Policy', value: 'strict-origin-when-cross-origin' },
          { key: 'X-Frame-Options', value: 'DENY' },
        ],
      },
    ];
  },
};

export default nextConfig;