next.config.mjs

import bundleAnalyzer from '@next/bundle-analyzer';

/** @type {import('next').NextConfig} */
const nextConfig = {
  // Image optimization
  images: {
    remotePatterns: [
      {
        protocol: 'https',
        hostname: 'logo.clearbit.com',
      },
    ],
    formats: ['image/webp', 'image/avif'],
    dangerouslyAllowSVG: true,
    contentDispositionType: 'attachment',
    contentSecurityPolicy: "default-src 'self'; script-src 'none'; sandbox;",
    minimumCacheTTL: 60 * 60 * 24, // 24 hours
    deviceSizes: [640, 750, 828, 1080, 1200, 1920, 2048, 3840],
    imageSizes: [16, 32, 48, 64, 96, 128, 256, 384],
  },

  // Performance optimizations
  experimental: {
    optimizePackageImports: [
      '@radix-ui/react-icons',
      'lucide-react',
      'framer-motion',
    ],
    webpackBuildWorker: true,
    parallelServerCompiles: true,
    parallelServerBuildTraces: true,
  },

  // Server external packages
  serverExternalPackages: ['@supabase/ssr'],

  // Compression
  compress: true,

  // Bundle optimization
  webpack: (config, { dev, isServer }) => {
    // Production optimizations
    if (!dev) {
      config.optimization.splitChunks = {
        chunks: 'all',
        cacheGroups: {
          default: {
            minChunks: 2,
            priority: -20,
            reuseExistingChunk: true,
          },
          vendor: {
            test: /[\\/]node_modules[\\/]/,
            name: 'vendors',
            priority: -10,
            chunks: 'all',
          },
          common: {
            minChunks: 2,
            chunks: 'all',
            enforce: true,
          },
        },
      };

      // Tree shaking optimization
      config.optimization.usedExports = true;
      config.optimization.sideEffects = false;
    }

    // Optimize imports
    if (!isServer) {
      config.resolve.fallback = {
        ...config.resolve.fallback,
        fs: false,
        net: false,
        tls: false,
      };
    }

    return config;
  },

  // Headers for better caching and security
  async headers() {
    return [
      {
        source: '/api/:path*',
        headers: [
          {
            key: 'Cache-Control',
            value: 'public, max-age=0, s-maxage=60, stale-while-revalidate=300',
          },
          {
            key: 'X-Content-Type-Options',
            value: 'nosniff',
          },
          {
            key: 'X-Frame-Options',
            value: 'DENY',
          },
          {
            key: 'X-XSS-Protection',
            value: '1; mode=block',
          },
          {
            key: 'Content-Security-Policy',
            value: "script-src 'self' 'unsafe-eval' 'unsafe-inline' https://www.googletagmanager.com https://cdn.jsdelivr.net https://www.instagram.com; frame-src 'self' https://www.instagram.com https://instagram.com https://www.youtube.com https://youtube.com; connect-src 'self' https://www.instagram.com https://instagram.com;",
          },
        ],
      },
      {
        source: '/(.*)',
        headers: [
          {
            key: 'Content-Security-Policy',
            value: "script-src 'self' 'unsafe-eval' 'unsafe-inline' https://www.googletagmanager.com https://cdn.jsdelivr.net https://www.instagram.com; frame-src 'self' https://www.instagram.com https://instagram.com https://www.youtube.com https://youtube.com; connect-src 'self' https://www.instagram.com https://instagram.com;",
          },
        ],
      },
      {
        source: '/_next/static/:path*',
        headers: [
          {
            key: 'Cache-Control',
            value: 'public, max-age=31536000, immutable',
          },
        ],
      },
      {
        source: '/images/:path*',
        headers: [
          {
            key: 'Cache-Control',
            value: 'public, max-age=86400, s-maxage=31536000',
          },
        ],
      },
    ];
  },

  // Redirects for better SEO
  async redirects() {
    return [];
  },

  // Environment variables
  env: {
    CUSTOM_KEY: process.env.CUSTOM_KEY,
  },

  // Output optimization
  output: 'standalone',
  poweredByHeader: false,
  generateEtags: false,

  // Development optimizations
  ...(process.env.NODE_ENV === 'development' && {
    typescript: {
      ignoreBuildErrors: false,
    },
    eslint: {
      ignoreDuringBuilds: false,
    },
  }),
};

// Bundle analyzer (only in development)
const withBundleAnalyzer = bundleAnalyzer({
  enabled: process.env.ANALYZE === 'true',
});

export default withBundleAnalyzer(nextConfig);