/// <reference lib="webworker" />
import { precacheAndRoute } from 'workbox-precaching'

declare const self: ServiceWorkerGlobalScope & { __WB_MANIFEST: Array<{ url: string, revision: string | null }> }

// Précache des assets de l'app (injecté au build).
precacheAndRoute(self.__WB_MANIFEST)

self.skipWaiting()
self.addEventListener('activate', event => event.waitUntil(self.clients.claim()))

// Réception d'un push : affiche la notification système (le contenu vient du back).
self.addEventListener('push', (event: PushEvent) => {
  let payload: { title?: string, body?: string, icon?: string, badge?: string, data?: { url?: string } } = {}
  try {
    payload = event.data?.json() ?? {}
  } catch {
    payload = { body: event.data?.text() }
  }

  const title = payload.title || 'StreakFit'
  event.waitUntil(
    self.registration.showNotification(title, {
      body: payload.body,
      icon: payload.icon || '/pwa-192.png',
      badge: payload.badge || '/pwa-192.png',
      data: payload.data || { url: '/' },
      tag: 'streakfit-streak',
      renotify: true
    })
  )
})

// Clic sur la notification : ouvre/focus l'app sur l'URL fournie.
self.addEventListener('notificationclick', (event: NotificationEvent) => {
  event.notification.close()
  const url = (event.notification.data && event.notification.data.url) || '/'
  event.waitUntil(
    self.clients.matchAll({ type: 'window', includeUncontrolled: true }).then((clients) => {
      for (const client of clients) {
        if ('focus' in client) return client.focus()
      }
      return self.clients.openWindow(url)
    })
  )
})