import type { NextConfig } from 'next'

const securityHeaders = [
  {
    key: 'X-DNS-Prefetch-Control',
    value: 'on',
  },
  {
    key: 'Strict-Transport-Security',
    value: 'max-age=63072000; includeSubDomains; preload',
  },
  {
    key: 'X-Content-Type-Options',
    value: 'nosniff',
  },
  {
    key: 'X-Frame-Options',
    value: 'SAMEORIGIN',
  },
  {
    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'",
      "img-src 'self' data: blob: https://*.letsbe.solutions",
      "font-src 'self' data:",
      "connect-src 'self' https://*.letsbe.solutions",
      "frame-ancestors 'self'",
      "base-uri 'self'",
      "form-action 'self'",
    ].join('; '),
  },
]

const nextConfig: NextConfig = {
  output: 'standalone',
  // reactCompiler: true, // Requires babel-plugin-react-compiler - enable later
  experimental: {
    serverActions: {
      bodySizeLimit: '2mb',
    },
  },
  images: {
    remotePatterns: [
      {
        protocol: 'https',
        hostname: '*.letsbe.solutions',
      },
    ],
  },
  // Turbopack config (Next.js 16 default bundler)
  turbopack: {},
  // Handle native modules like ssh2 (for webpack fallback)
  webpack: (config, { isServer }) => {
    if (isServer) {
      // Externalize ssh2 and its native dependencies
      config.externals = config.externals || []
      config.externals.push({
        'ssh2': 'commonjs ssh2',
      })
    }
    return config
  },
  // Externalize ssh2 for both Turbopack and Webpack
  serverExternalPackages: ['ssh2'],
  async headers() {
    return [
      {
        source: '/(.*)',
        headers: securityHeaders,
      },
    ]
  },
}

export default nextConfig