next.config.js

const withPWA = require('next-pwa')({
  dest: 'public',
  register: true,
  skipWaiting: true,
  disable: process.env.NODE_ENV === 'development',
  runtimeCaching: [
    {
      urlPattern: /^https:\/\/fonts\.googleapis\.com\/.*/i,
      handler: 'CacheFirst',
      options: {
        cacheName: 'google-fonts',
        expiration: {
          maxEntries: 4,
          maxAgeSeconds: 365 * 24 * 60 * 60 // 1 year
        }
      }
    },
    {
      urlPattern: /^https:\/\/fonts\.gstatic\.com\/.*/i,
      handler: 'CacheFirst',
      options: {
        cacheName: 'google-fonts-static',
        expiration: {
          maxEntries: 4,
          maxAgeSeconds: 365 * 24 * 60 * 60 // 1 year
        }
      }
    },
    {
      urlPattern: /\.(?:jpg|jpeg|gif|png|svg|ico|webp)$/i,
      handler: 'StaleWhileRevalidate',
      options: {
        cacheName: 'static-image-assets',
        expiration: {
          maxEntries: 64,
          maxAgeSeconds: 24 * 60 * 60 // 24 hours
        }
      }
    },
    {
      urlPattern: /\.(?:js|css)$/i,
      handler: 'StaleWhileRevalidate',
      options: {
        cacheName: 'static-resources',
        expiration: {
          maxEntries: 32,
          maxAgeSeconds: 24 * 60 * 60 // 24 hours
        }
      }
    },
    {
      urlPattern: ({ request }) => request.destination === 'document',
      handler: 'NetworkFirst',
      options: {
        cacheName: 'documents',
        expiration: {
          maxEntries: 32,
          maxAgeSeconds: 24 * 60 * 60 // 24 hours
        }
      }
    },
    {
      urlPattern: /^https:\/\/firestore\.googleapis\.com\/.*/i,
      handler: 'NetworkFirst',
      options: {
        cacheName: 'firestore-cache',
        expiration: {
          maxEntries: 32,
          maxAgeSeconds: 5 * 60 // 5 minutes
        },
        networkTimeoutSeconds: 3
      }
    }
  ]
});

/** @type {import('next').NextConfig} */
const nextConfig = {
  // Enable static export for Firebase Hosting
  output: 'export',
  
  // Disable image optimization for static export
  images: {
    unoptimized: true
  },
  
  // Configure trailing slash
  trailingSlash: false,
  
  // Skip build-time validation of environment variables
  skipTrailingSlashRedirect: true,
  
  // Configure asset prefix for CDN
  assetPrefix: process.env.NODE_ENV === 'production' ? undefined : undefined,
  
  // Experimental features
  experimental: {
    // App directory is now default in Next.js 15+
  },
  
  // Configure headers for security
  async headers() {
    return [
      {
        source: '/(.*)',
        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: 'origin-when-cross-origin',
          },
          {
            key: 'Permissions-Policy',
            value: 'camera=(), microphone=(), geolocation=(self), payment=()',
          },
        ],
      },
      {
        source: '/api/(.*)',
        headers: [
          {
            key: 'Access-Control-Allow-Origin',
            value: process.env.NEXT_PUBLIC_SITE_URL || 'http://localhost:3000',
          },
          {
            key: 'Access-Control-Allow-Methods',
            value: 'GET, POST, PUT, DELETE, OPTIONS',
          },
          {
            key: 'Access-Control-Allow-Headers',
            value: 'Content-Type, Authorization',
          },
        ],
      },
    ];
  },
  
  // Configure redirects
  async redirects() {
    return [
      {
        source: '/home',
        destination: '/',
        permanent: true,
      },
      {
        source: '/login',
        destination: '/auth',
        permanent: false,
      },
      {
        source: '/signup',
        destination: '/auth',
        permanent: false,
      },
    ];
  },
  
  // Configure rewrites for API routes
  async rewrites() {
    return [
      {
        source: '/api/:path*',
        destination: 'https://your-cloud-functions-url/:path*',
      },
    ];
  },
  
  // Environment variables that should be available in the browser
  env: {
    NEXT_PUBLIC_FIREBASE_API_KEY: process.env.NEXT_PUBLIC_FIREBASE_API_KEY,
    NEXT_PUBLIC_FIREBASE_AUTH_DOMAIN: process.env.NEXT_PUBLIC_FIREBASE_AUTH_DOMAIN,
    NEXT_PUBLIC_FIREBASE_PROJECT_ID: process.env.NEXT_PUBLIC_FIREBASE_PROJECT_ID,
    NEXT_PUBLIC_FIREBASE_STORAGE_BUCKET: process.env.NEXT_PUBLIC_FIREBASE_STORAGE_BUCKET,
    NEXT_PUBLIC_FIREBASE_MESSAGING_SENDER_ID: process.env.NEXT_PUBLIC_FIREBASE_MESSAGING_SENDER_ID,
    NEXT_PUBLIC_FIREBASE_APP_ID: process.env.NEXT_PUBLIC_FIREBASE_APP_ID,
    NEXT_PUBLIC_FIREBASE_MEASUREMENT_ID: process.env.NEXT_PUBLIC_FIREBASE_MEASUREMENT_ID,
    NEXT_PUBLIC_SITE_URL: process.env.NEXT_PUBLIC_SITE_URL,
  },
  
  // Webpack configuration
  webpack: (config, { buildId, dev, isServer, defaultLoaders, webpack }) => {
    // Add custom webpack configurations
    if (!isServer) {
      // Don't resolve 'fs' module on the client to prevent this error on build
      config.resolve.fallback = {
        fs: false,
        path: false,
        os: false,
      };
    }
    
    return config;
  },
  
  // Configure TypeScript
  typescript: {
    // Ignore TypeScript errors during build (not recommended for production)
    ignoreBuildErrors: false,
  },
  
  // Configure ESLint
  eslint: {
    // Ignore ESLint errors during build (not recommended for production)
    ignoreDuringBuilds: false,
  },
  
  // Configure React Strict Mode
  reactStrictMode: true,
  
  // Configure compiler options
  compiler: {
    // Remove console.logs in production
    removeConsole: process.env.NODE_ENV === 'production',
  },
};

module.exports = withPWA(nextConfig);