import type { NextConfig } from "next";

// The CommandBoard API (boards, tasks, plugins, /health) runs as its own
// service. In the old custom server.js it was mounted in-process; here we proxy
// those paths to it via rewrites. Our own /api routes (hire-us, oauth/coinpay,
// webhooks) are filesystem routes and match before these afterFiles rewrites.
const commandboardApiUrl = process.env.COMMANDBOARD_API_URL;

const securityHeaders = [
  // HSTS — site is HTTPS-only behind Railway. No `preload` (irreversible).
  { key: "Strict-Transport-Security", value: "max-age=31536000; includeSubDomains" },
  { key: "X-Content-Type-Options", value: "nosniff" },
  { key: "X-Frame-Options", value: "SAMEORIGIN" },
  { key: "Referrer-Policy", value: "strict-origin-when-cross-origin" },
  { key: "Permissions-Policy", value: "camera=(), microphone=(), geolocation=()" },
];

const nextConfig: NextConfig = {
  async headers() {
    return [{ source: "/:path*", headers: securityHeaders }];
  },
  async rewrites() {
    if (!commandboardApiUrl) return [];
    const base = commandboardApiUrl.replace(/\/$/, "");
    return {
      afterFiles: [
        { source: "/health", destination: `${base}/health` },
        { source: "/api/:path*", destination: `${base}/api/:path*` }
      ]
    };
  }
};

export default nextConfig;