sw.js

// sw.js - Service Worker for offline AI model caching
const CACHE_NAME = 'frenzy-chatbot-v1.2';
const STATIC_CACHE = 'static-cache-v1';
const AI_MODEL_CACHE = 'ai-model-cache-v1';

// Files to cache immediately
const STATIC_FILES = [
  '/',
  '/index.html',
  '/style.css',
  '/script.js',
  '/frenzy.svg',
  '/videos/desktop-video.mp4',
  '/videos/light-video.mp4',
  '/models/offline-ai-model.js'  // We'll create this
];

// Install event - cache all static files and AI model
self.addEventListener('install', (event) => {
  console.log('Service Worker installing...');
  event.waitUntil(
    caches.open(STATIC_CACHE)
      .then((cache) => {
        console.log('Caching static files');
        return cache.addAll(STATIC_FILES);
      })
      .then(() => {
        console.log('All files cached successfully');
        return self.skipWaiting();
      })
  );
});

// Activate event - clean up old caches
self.addEventListener('activate', (event) => {
  console.log('Service Worker activating...');
  event.waitUntil(
    caches.keys().then((cacheNames) => {
      return Promise.all(
        cacheNames.map((cacheName) => {
          if (cacheName !== STATIC_CACHE && cacheName !== AI_MODEL_CACHE) {
            console.log('Deleting old cache:', cacheName);
            return caches.delete(cacheName);
          }
        })
      );
    }).then(() => self.clients.claim())
  );
});

// Fetch event - serve from cache first, then network
self.addEventListener('fetch', (event) => {
  event.respondWith(
    caches.match(event.request)
      .then((response) => {
        // Return cached version or fetch from network
        return response || fetch(event.request);
      })
  );
});