next.config.ts

import type { NextConfig } from "next";

const nextConfig: NextConfig = {
  output: 'standalone',
  async headers() {
    return [
      {
        // CORS for API routes — allow agent SDKs from any origin
        source: '/api/:path*',
        headers: [
          { key: 'Access-Control-Allow-Origin', value: process.env.CORS_ORIGIN || '*' },
          { key: 'Access-Control-Allow-Methods', value: 'GET, POST, PATCH, OPTIONS' },
          { key: 'Access-Control-Allow-Headers', value: 'Content-Type, X-API-Key, Authorization, Idempotency-Key, X-Dashboard-Key, X-Request-ID' },
          { key: 'Access-Control-Expose-Headers', value: 'X-Request-ID, X-RateLimit-Limit, X-RateLimit-Remaining, X-RateLimit-Reset, X-Decision-Id, Retry-After' },
          { key: 'Access-Control-Max-Age', value: '86400' },
        ],
      },
      {
        // Security headers for all routes
        source: '/:path*',
        headers: [
          { key: 'X-Content-Type-Options', value: 'nosniff' },
          { key: 'X-Frame-Options', value: 'DENY' },
          { key: 'X-XSS-Protection', value: '1; mode=block' },
          { key: 'Referrer-Policy', value: 'strict-origin-when-cross-origin' },
          { key: 'Permissions-Policy', value: 'camera=(), microphone=(), geolocation=()' },
          {
            key: 'Content-Security-Policy',
            value: [
              "default-src 'self'",
              "script-src 'self' 'unsafe-inline' 'unsafe-eval'",
              "style-src 'self' 'unsafe-inline' fonts.googleapis.com",
              "font-src 'self' fonts.gstatic.com",
              "img-src 'self' data: blob:",
              "connect-src 'self'",
              "frame-ancestors 'none'",
              "base-uri 'self'",
              "form-action 'self'",
            ].join('; '),
          },
          // HSTS — enforce HTTPS in production
          ...(process.env.NODE_ENV === 'production' ? [
            { key: 'Strict-Transport-Security', value: 'max-age=31536000; includeSubDomains; preload' },
          ] : []),
        ],
      },
    ];
  },
};

export default nextConfig;