93 lines
2.5 KiB
JavaScript
93 lines
2.5 KiB
JavaScript
// Service Worker版本，用于缓存更新
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const CACHE_VERSION = 'v1';
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const CACHE_NAME = `vip-video-cache-${CACHE_VERSION}`;
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// 需要缓存的静态资源
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const urlsToCache = [
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'/',
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'/index.html',
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'/manifest.json',
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'/icons/icon-192x192.png',
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'/icons/icon-512x512.png'
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];
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// 安装Service Worker
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self.addEventListener('install', (event) => {
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event.waitUntil(
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caches.open(CACHE_NAME)
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.then((cache) => {
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console.log('已打开缓存');
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return cache.addAll(urlsToCache);
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})
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.then(() => self.skipWaiting())
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);
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});
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// 激活Service Worker
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self.addEventListener('activate', (event) => {
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const cacheWhitelist = [CACHE_NAME];
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event.waitUntil(
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caches.keys().then((cacheNames) => {
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return Promise.all(
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cacheNames.map((cacheName) => {
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if (cacheWhitelist.indexOf(cacheName) === -1) {
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return caches.delete(cacheName);
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}
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})
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);
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}).then(() => self.clients.claim())
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);
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});
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// 拦截网络请求
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self.addEventListener('fetch', (event) => {
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// 跳过非GET请求和非http/https请求
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if (event.request.method !== 'GET' ||
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!event.request.url.startsWith('http')) {
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return;
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}
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// 跳过解析接口请求
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if (event.request.url.includes('jx.xmflv.com') ||
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event.request.url.includes('/api/')) {
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return;
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}
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event.respondWith(
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caches.match(event.request)
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.then((response) => {
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// 如果在缓存中找到响应，则返回缓存的响应
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if (response) {
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return response;
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}
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// 否则发起网络请求
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return fetch(event.request).then(
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(response) => {
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// 检查是否收到有效的响应
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if (!response || response.status !== 200 || response.type !== 'basic') {
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return response;
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}
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// 克隆响应，因为响应是流，只能使用一次
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const responseToCache = response.clone();
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caches.open(CACHE_NAME)
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.then((cache) => {
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// 忽略查询参数的URL
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const urlWithoutQuery = event.request.url.split('?')[0];
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cache.put(event.request, responseToCache);
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});
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return response;
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}
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);
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}).catch(() => {
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// 如果请求失败且没有缓存，返回离线页面
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if (event.request.mode === 'navigate') {
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return caches.match('/');
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}
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})
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);
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});
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