next.config.ts

import type { NextConfig } from "next";

const contentSecurityPolicy = [
  "default-src 'self'",
  "base-uri 'self'",
  "form-action 'self'",
  "frame-ancestors 'none'",
  "object-src 'none'",
  "script-src 'self' 'unsafe-inline'",
  "style-src 'self' 'unsafe-inline'",
  "img-src 'self' data: blob: https://*.supabase.co",
  // The approved motion proof is an MP4 served from a private Supabase bucket via a
  // signed URL. Without an explicit media-src it inherits default-src 'self', so the
  // browser blocks the video while images continue to load through img-src, which
  // renders as a black player stuck at 0:00.
  "media-src 'self' blob: https://*.supabase.co",
  "connect-src 'self' https://*.supabase.co wss://*.supabase.co",
  "font-src 'self'",
  "manifest-src 'self'",
  "upgrade-insecure-requests",
].join("; ");

const securityHeaders = [
  { key: "X-Content-Type-Options", value: "nosniff" },
  { key: "X-Frame-Options", value: "DENY" },
  { key: "Referrer-Policy", value: "no-referrer" },
  { key: "Permissions-Policy", value: "camera=(), microphone=(), geolocation=()" },
  { key: "Cross-Origin-Opener-Policy", value: "same-origin" },
  { key: "Cross-Origin-Resource-Policy", value: "same-origin" },
  {
    key: "Strict-Transport-Security",
    value: "max-age=63072000; includeSubDomains; preload",
  },
  ...(process.env.NODE_ENV === "production"
    ? [{ key: "Content-Security-Policy", value: contentSecurityPolicy }]
    : []),
];

const nextConfig: NextConfig = {
  poweredByHeader: false,
  async headers() {
    return [{ source: "/(.*)", headers: securityHeaders }];
  },
};

export default nextConfig;