const withPWA = require('next-pwa')({
  dest: 'public',
  register: true,
  skipWaiting: true,
  disable: process.env.NODE_ENV === 'development',
  runtimeCaching: [
    {
      urlPattern: /^https:\/\/fonts\.(?:gstatic)\.com\/.*/i,
      handler: 'CacheFirst',
      options: {
        cacheName: 'google-fonts-webfonts',
        expiration: {
          maxEntries: 4,
          maxAgeSeconds: 365 * 24 * 60 * 60, // 365 days
        },
      },
    },
    {
      urlPattern: /^https:\/\/fonts\.(?:googleapis)\.com\/.*/i,
      handler: 'StaleWhileRevalidate',
      options: {
        cacheName: 'google-fonts-stylesheets',
        expiration: {
          maxEntries: 4,
          maxAgeSeconds: 7 * 24 * 60 * 60, // 7 days
        },
      },
    },
    {
      urlPattern: /\.(?:eot|otf|ttc|ttf|woff|woff2|font.css)$/i,
      handler: 'StaleWhileRevalidate',
      options: {
        cacheName: 'static-font-assets',
        expiration: {
          maxEntries: 4,
          maxAgeSeconds: 7 * 24 * 60 * 60, // 7 days
        },
      },
    },
    {
      urlPattern: /\.(?:jpg|jpeg|gif|png|svg|ico|webp)$/i,
      handler: 'StaleWhileRevalidate',
      options: {
        cacheName: 'static-image-assets',
        expiration: {
          maxEntries: 64,
          maxAgeSeconds: 24 * 60 * 60, // 24 hours
        },
      },
    },
    {
      urlPattern: /\/_next\/image\?url=.+$/i,
      handler: 'StaleWhileRevalidate',
      options: {
        cacheName: 'next-image',
        expiration: {
          maxEntries: 64,
          maxAgeSeconds: 24 * 60 * 60, // 24 hours
        },
      },
    },
    {
      urlPattern: /\.(?:mp3|wav|ogg)$/i,
      handler: 'CacheFirst',
      options: {
        rangeRequests: true,
        cacheName: 'static-audio-assets',
        expiration: {
          maxEntries: 32,
          maxAgeSeconds: 24 * 60 * 60, // 24 hours
        },
      },
    },
    {
      urlPattern: /\.(?:mp4)$/i,
      handler: 'CacheFirst',
      options: {
        rangeRequests: true,
        cacheName: 'static-video-assets',
        expiration: {
          maxEntries: 32,
          maxAgeSeconds: 24 * 60 * 60, // 24 hours
        },
      },
    },
    {
      urlPattern: /\.(?:js)$/i,
      handler: 'StaleWhileRevalidate',
      options: {
        cacheName: 'static-js-assets',
        expiration: {
          maxEntries: 32,
          maxAgeSeconds: 24 * 60 * 60, // 24 hours
        },
      },
    },
    {
      urlPattern: /\.(?:css|less)$/i,
      handler: 'StaleWhileRevalidate',
      options: {
        cacheName: 'static-style-assets',
        expiration: {
          maxEntries: 32,
          maxAgeSeconds: 24 * 60 * 60, // 24 hours
        },
      },
    },
    {
      urlPattern: /\/_next\/data\/.+\/.+\.json$/i,
      handler: 'StaleWhileRevalidate',
      options: {
        cacheName: 'next-data',
        expiration: {
          maxEntries: 32,
          maxAgeSeconds: 24 * 60 * 60, // 24 hours
        },
      },
    },
    {
      urlPattern: /\/api\/.*$/i,
      handler: 'NetworkFirst',
      method: 'GET',
      options: {
        cacheName: 'apis',
        expiration: {
          maxEntries: 16,
          maxAgeSeconds: 24 * 60 * 60, // 24 hours
        },
        networkTimeoutSeconds: 10, // fall back to cache if API doesn't respond within 10s
      },
    },
    {
      urlPattern: /.*/i,
      handler: 'NetworkFirst',
      options: {
        cacheName: 'others',
        expiration: {
          maxEntries: 32,
          maxAgeSeconds: 24 * 60 * 60, // 24 hours
        },
        networkTimeoutSeconds: 10,
      },
    },
  ],
});

/** @type {import('next').NextConfig} */
const nextConfig = {
  reactStrictMode: true,

  // Performance optimizations
  compiler: {
    removeConsole: process.env.NODE_ENV === 'production',
  },

  // Image optimization
  images: {
    formats: ['image/avif', 'image/webp'],
    deviceSizes: [640, 750, 828, 1080, 1200, 1920, 2048, 3840],
    imageSizes: [16, 32, 48, 64, 96, 128, 256, 384],
  },

  // Production optimizations
  swcMinify: true,

  // Compression
  compress: true,

  // Enable experimental features for better performance
  experimental: {
    optimizePackageImports: ['@mui/material', '@mui/icons-material'],
  },
}

module.exports = withPWA(nextConfig)