const CACHE_NAME = 'runforge-shell-v1'
const APP_SHELL = ['/', '/manifest.webmanifest', '/logo.svg']

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.filter((key) => key !== CACHE_NAME).map((key) => caches.delete(key))
      ))
      .then(() => self.clients.claim())
  )
})

self.addEventListener('fetch', (event) => {
  if (event.request.method !== 'GET' || event.request.mode !== 'navigate') return

  event.respondWith(
    fetch(event.request).catch(() => caches.match('/'))
  )
})