/** @type {import('next').NextConfig} */
const nextConfig = {
  reactStrictMode: true,
  
  // Security headers
  async headers() {
    return [
      {
        source: '/:path*',
        headers: [
          {
            key: 'X-DNS-Prefetch-Control',
            value: 'on'
          },
          {
            key: 'Strict-Transport-Security',
            value: 'max-age=63072000; includeSubDomains; preload'
          },
          {
            key: 'X-Frame-Options',
            value: 'SAMEORIGIN'
          },
          {
            key: 'X-Content-Type-Options',
            value: 'nosniff'
          },
          {
            key: 'X-XSS-Protection',
            value: '1; mode=block'
          },
          {
            key: 'Referrer-Policy',
            value: 'origin-when-cross-origin'
          },
          {
            key: 'Permissions-Policy',
            value: 'camera=(), microphone=(), geolocation=()'
          },
          // Content Security Policy
          {
            key: 'Content-Security-Policy',
            value: [
              "default-src 'self'",
              "script-src 'self' 'unsafe-eval' 'unsafe-inline' https://*.walletconnect.com https://*.walletconnect.org",
              "style-src 'self' 'unsafe-inline'",
              "img-src 'self' data: https:",
              "font-src 'self' data:",
              "connect-src 'self' https://*.walletconnect.com https://*.walletconnect.org https://*.infura.io https://*.alchemy.com https://rpc.tenderly.co wss://*.walletconnect.com wss://*.walletconnect.org",
              "frame-src 'self' https:",
              "object-src 'none'",
              "base-uri 'self'",
              "form-action 'self'",
              "frame-ancestors 'self'",
              "upgrade-insecure-requests",
            ].join('; ')
          }
        ]
      }
    ];
  },
  
  webpack: (config) => {
    config.resolve.fallback = { fs: false, net: false, tls: false };
    config.externals.push("pino-pretty");
    return config;
  },
  compiler: {
    styledComponents: true,
  },
  // experimental: {
  //   windowHistorySupport: true,
  // },
};

module.exports = nextConfig;