import { useRegisterSW } from 'virtual:pwa-register/vue' import { STORAGE_KEY_PWA_HIDE_INSTALL } from '~/constants' export default defineNuxtPlugin(() => { const online = useOnline() const registrationError = ref(false) const swActivated = ref(false) const showInstallPrompt = ref(false) const hideInstall = useLocalStorage(STORAGE_KEY_PWA_HIDE_INSTALL, false) // https://thomashunter.name/posts/2021-12-11-detecting-if-pwa-twa-is-installed const ua = navigator.userAgent const ios = ua.match(/iPhone|iPad|iPod/) const standalone = window.matchMedia('(display-mode: window-controls-overlay)').matches || window.matchMedia('(display-mode: standalone)').matches const isInstalled = !!(standalone || (ios && !ua.match(/Safari/))) const registerPeriodicSync = (swUrl: string, r: ServiceWorkerRegistration) => { setInterval(async () => { if (!online.value) return const resp = await fetch(swUrl, { cache: 'no-store', headers: { 'cache': 'no-store', 'cache-control': 'no-cache', }, }) if (resp?.status === 200) await r.update() }, 60 * 60 * 1000 /* 1 hour */) } const { needRefresh, updateServiceWorker, } = useRegisterSW({ immediate: true, onRegisterError() { registrationError.value = true }, onRegisteredSW(swUrl, r) { // should add support in pwa plugin if (r?.active?.state === 'activated') { swActivated.value = true registerPeriodicSync(swUrl, r) } else if (r?.installing) { r.installing.addEventListener('statechange', (e) => { const sw = e.target as ServiceWorker swActivated.value = sw.state === 'activated' if (swActivated.value) registerPeriodicSync(swUrl, r) }) } }, }) const close = async () => { needRefresh.value = false } let install: () => Promise = () => Promise.resolve() let cancelInstall: () => void = noop if (!hideInstall.value) { type InstallPromptEvent = Event & { prompt: () => void userChoice: Promise<{ outcome: 'dismissed' | 'accepted' }> } let deferredPrompt: InstallPromptEvent | undefined const beforeInstallPrompt = (e: Event) => { e.preventDefault() deferredPrompt = e as InstallPromptEvent showInstallPrompt.value = true } window.addEventListener('beforeinstallprompt', beforeInstallPrompt) window.addEventListener('appinstalled', () => { deferredPrompt = undefined showInstallPrompt.value = false }) cancelInstall = () => { deferredPrompt = undefined showInstallPrompt.value = false window.removeEventListener('beforeinstallprompt', beforeInstallPrompt) hideInstall.value = true } install = async () => { if (!showInstallPrompt.value || !deferredPrompt) { showInstallPrompt.value = false return } showInstallPrompt.value = false await nextTick() deferredPrompt.prompt() await deferredPrompt.userChoice } } return { provide: { pwa: reactive({ isInstalled, showInstallPrompt, cancelInstall, install, swActivated, registrationError, needRefresh, updateServiceWorker, close, }), }, } })