clock/next.config.ts

import type { NextConfig } from "next";

const nextConfig: NextConfig = {
  // Optimisations de production
  reactStrictMode: true,
  
  // Supprimer le header X-Powered-By pour la sécurité
  poweredByHeader: false,
  
  // Optimisation des images
  images: {
    formats: ['image/avif', 'image/webp'],
    deviceSizes: [640, 750, 828, 1080, 1200, 1920, 2048, 3840],
  },
  
  // Headers de sécurité, cache et SEO
  async headers() {
    return [
      {
        source: '/:path*',
        headers: [
          {
            key: 'X-DNS-Prefetch-Control',
            value: 'on',
          },
          {
            key: 'X-XSS-Protection',
            value: '1; mode=block',
          },
          {
            key: 'X-Frame-Options',
            value: 'SAMEORIGIN',
          },
          {
            key: 'X-Content-Type-Options',
            value: 'nosniff',
          },
          {
            key: 'Referrer-Policy',
            value: 'strict-origin-when-cross-origin',
          },
          {
            key: 'Permissions-Policy',
            value: 'camera=(), microphone=(), geolocation=()',
          },
          {
            key: 'Strict-Transport-Security',
            value: 'max-age=63072000; includeSubDomains; preload',
          },
        ],
      },
      {
        source: '/manifest.json',
        headers: [
          {
            key: 'Cache-Control',
            value: 'public, max-age=31536000, immutable',
          },
          {
            key: 'Content-Type',
            value: 'application/manifest+json',
          },
        ],
      },
      {
        // Cache statiques (images, fonts, icons)
        source: '/:path*.(ico|png|jpg|jpeg|svg|webp|avif|woff|woff2)',
        headers: [
          {
            key: 'Cache-Control',
            value: 'public, max-age=31536000, immutable',
          },
        ],
      },
      {
        // Sitemap et robots : cache court pour que Google voit les mises à jour
        source: '/(sitemap.xml|robots.txt)',
        headers: [
          {
            key: 'Cache-Control',
            value: 'public, max-age=3600, s-maxage=86400',
          },
        ],
      },
    ];
  },

  // Redirections pour des URL propres
  async redirects() {
    return [
      {
        source: '/index',
        destination: '/',
        permanent: true,
      },
      {
        source: '/home',
        destination: '/',
        permanent: true,
      },
    ];
  },
  
  // Compression
  compress: true,
  
  // Optimisation du bundle
  experimental: {
    optimizeCss: true,
  },
};

export default nextConfig;