53 lines
1.6 KiB
JavaScript
53 lines
1.6 KiB
JavaScript
// src/utils/versionGuard.js
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const VERSION_URL = '/version.json';
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const LS_KEY = '__app_version__';
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const SESSION_REFRESH_FLAG = '__just_refreshed__';
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async function fetchRemoteVersion() {
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const res = await fetch(VERSION_URL, { cache: 'no-store' }); // ★ 關鍵：不快取
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if (!res.ok) throw new Error('version.json fetch failed');
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return res.json();
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}
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async function unregisterAllSW() {
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if (!('serviceWorker' in navigator)) return;
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const regs = await navigator.serviceWorker.getRegistrations();
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await Promise.all(regs.map(r => r.unregister()));
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}
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async function clearCacheStorage() {
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if (!('caches' in window)) return;
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const keys = await caches.keys();
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await Promise.all(keys.map(k => caches.delete(k)));
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}
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export async function ensureFreshAssets() {
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try {
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const prev = localStorage.getItem(LS_KEY);
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const remote = await fetchRemoteVersion();
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const ver = remote.version || remote.buildId || remote.commit;
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if (!ver) return;
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if (prev && prev !== ver) {
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await unregisterAllSW();
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await clearCacheStorage();
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sessionStorage.setItem(SESSION_REFRESH_FLAG, '1');
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// 用 replace 避免回上一頁又載到舊 index.html
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location.replace(location.href.split('#')[0]);
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return;
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}
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if (!prev) localStorage.setItem(LS_KEY, ver);
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} catch (e) {
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console.warn('[versionGuard] check failed:', e);
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}
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}
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export async function syncLocalVersion() {
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try {
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const remote = await fetchRemoteVersion();
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const ver = remote.version || remote.buildId || remote.commit;
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if (ver) localStorage.setItem(LS_KEY, ver);
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} catch {}
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}
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