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Viewing: sw.js

const CACHE_NAME = 'cuentame-pwa-v1';
// Derivar base a partir del scope de registro (normalmente .../cuentame/)
const SCOPE = (self.registration && self.registration.scope) || (self.location.origin + self.location.pathname.replace(/sw\.js$/, ''));
function toPath(rel){ return new URL(rel, SCOPE).pathname; }
const APP_SHELL = [
  toPath('index.php'),
  toPath('manifest.webmanifest'),
  toPath('assets/js/pwa.js'),
  // Favicon fuera de cuentame: subir desde scope un nivel
  new URL('../assets/img/favicon.png', SCOPE).pathname
];

self.addEventListener('install', (event) => {
  event.waitUntil(
    caches.open(CACHE_NAME).then((cache) => cache.addAll(APP_SHELL)).then(() => self.skipWaiting())
  );
});

self.addEventListener('activate', (event) => {
  event.waitUntil(
    caches.keys().then((keys) => Promise.all(keys.map((k) => { if (k !== CACHE_NAME) return caches.delete(k); })))
      .then(() => self.clients.claim())
  );
});

self.addEventListener('fetch', (event) => {
  const req = event.request;
  // Try network first, fallback to cache
  event.respondWith(
    fetch(req).then((res) => {
      const resClone = res.clone();
      caches.open(CACHE_NAME).then((cache) => cache.put(req, resClone)).catch(()=>{});
      return res;
    }).catch(() => caches.match(req))
  );
});

// Handle notification clicks: focus an existing client or open a new one
self.addEventListener('notificationclick', (event) => {
  event.notification.close();
  const targetUrl = (event.notification && event.notification.data && event.notification.data.url) || new URL('.', SCOPE).pathname;
  event.waitUntil(
    (async () => {
      const allClients = await self.clients.matchAll({ type: 'window', includeUncontrolled: true });
      // Try to focus an open tab with same origin and path prefix
      for (const client of allClients) {
        try {
          if (client.url && client.url.indexOf(new URL('.', SCOPE).pathname) !== -1) {
            await client.focus();
            await client.navigate(targetUrl);
            return;
          }
        } catch (_) {}
      }
      // Otherwise open a new window
      await self.clients.openWindow(targetUrl);
    })()
  );
});

// Optional: handle Web Push payloads if configured in the future
self.addEventListener('push', (event) => {
  try {
    const data = event.data ? event.data.json() : {};
    const title = data.title || 'Nuevo mensaje';
    const body = data.body || 'Tienes una nueva notificación';
    const url = data.url || new URL('.', SCOPE).pathname;
    const options = {
      body,
      icon: new URL('../assets/img/favicon.png', SCOPE).pathname,
      badge: new URL('../assets/img/favicon.png', SCOPE).pathname,
      data: { url }
    };
    event.waitUntil(self.registration.showNotification(title, options));
  } catch (_) {
    // noop
  }
});
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