next.config.js

/** @type {import('next').NextConfig} */
const securityHeaders = [
  { key: "X-Frame-Options", value: "DENY" },
  { key: "X-Content-Type-Options", value: "nosniff" },
  { key: "Referrer-Policy", value: "strict-origin-when-cross-origin" },
  { key: "Permissions-Policy", value: "camera=(), microphone=(), geolocation=()" },
  {
    key: "Strict-Transport-Security",
    value: "max-age=63072000; includeSubDomains; preload",
  },
  {
    key: "Content-Security-Policy",
    value: [
      "default-src 'self'",
      // Next.js injects inline/runtime scripts; styles use inline attributes.
      "script-src 'self' 'unsafe-inline' 'unsafe-eval'",
      "style-src 'self' 'unsafe-inline'",
      "img-src 'self' data: blob:",
      "font-src 'self' data:",
      // The browser only talks to our own API routes; those reach Appwrite
      // server-side. Widen this if you ever call Appwrite from the client.
      "connect-src 'self'",
      "frame-ancestors 'none'",
      "base-uri 'self'",
      "form-action 'self'",
    ].join("; "),
  },
];

const nextConfig = {
  reactStrictMode: true,
  // Lint now runs on build and blocks deploys on errors.
  eslint: { ignoreDuringBuilds: false },
  async headers() {
    return [{ source: "/:path*", headers: securityHeaders }];
  },
};

module.exports = nextConfig;