import type { NextConfig } from "next";

// Backend URL used for the SERVER-SIDE /api rewrite. Must resolve on the
// Docker network, so it must NOT be a public origin (that would create a loop).
// Use BACKEND_INTERNAL_URL (set at container runtime) so client components can
// independently use NEXT_PUBLIC_API_URL (public origin, baked at build time).
const API_BASE =
  process.env.BACKEND_INTERNAL_URL ||
  process.env.NEXT_PUBLIC_API_URL ||
  "http://backend:8000";

const nextConfig: NextConfig = {
  output: "standalone",
  async rewrites() {
    return [
      {
        source: "/api/:path*",
        destination: `${API_BASE}/api/:path*`,
      },
    ];
  },
};

export default nextConfig;