next.config.ts

import type { NextConfig } from "next";

const isProduction = process.env.NODE_ENV === "production";

const contentSecurityPolicy = [
  "default-src 'self'",
  "base-uri 'self'",
  "frame-ancestors 'none'",
  "object-src 'none'",
  "form-action 'self'",
  "img-src 'self' data: https:",
  "font-src 'self' data: https:",
  "style-src 'self' 'unsafe-inline'",
  "script-src 'self'",
  // Next.js needs inline bootstrap scripts; keep this for script elements only.
  "script-src-elem 'self' 'unsafe-inline'",
  // Block inline event handlers (onclick=...) to reduce XSS surface.
  "script-src-attr 'none'",
  "connect-src 'self' https: wss://*.convex.cloud wss://*.convex.site",
  "upgrade-insecure-requests",
].join("; ");

const securityHeaders = [
  {
    key: "Content-Security-Policy",
    value: contentSecurityPolicy,
  },
  {
    key: "Referrer-Policy",
    value: "strict-origin-when-cross-origin",
  },
  {
    key: "X-Content-Type-Options",
    value: "nosniff",
  },
  {
    key: "X-Frame-Options",
    value: "DENY",
  },
  {
    key: "Permissions-Policy",
    value: "camera=(), microphone=(), geolocation=()",
  },
  {
    key: "Strict-Transport-Security",
    value: "max-age=63072000; includeSubDomains; preload",
  },
];

const nextConfig: NextConfig = {
  /* config options here */
  reactCompiler: true,
  async headers() {
    if (!isProduction) {
      return [];
    }

    return [
      {
        source: "/:path*",
        headers: securityHeaders,
      },
    ];
  },
};

export default nextConfig;