Victor_Jay
8902af420e
- Required 中间件区分页面请求(/api/ 前缀)与 SSR 页面请求，页面请求 302 跳转登录页携带 return URL - 前端 doRefresh token 刷新失败时跳转登录页，避免静默失败 - 认证页面禁止重定向避免无限循环
348 lines
15 KiB
JavaScript
348 lines
15 KiB
JavaScript
/* ============================================================
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MetaLab Common JS — 全站共享脚本
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============================================================ */
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(function () {
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'use strict';
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// ---- Shared utils (exposed to other scripts via window.MetaLab) ----
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window.MetaLab = window.MetaLab || {};
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var toastTimer = null;
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window.MetaLab.toast = function (el, msg, isError) {
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if (!el) return;
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clearTimeout(toastTimer);
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el.textContent = msg;
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el.className = 'toast' + (isError ? ' error' : '');
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void el.offsetWidth;
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el.classList.add('show');
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toastTimer = setTimeout(function () {
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el.classList.remove('show');
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}, 3000);
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};
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// ---- CSRF token helper (从共享 utils.js 提供的 getCSRFToken 别名) ----
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window.MetaLab.csrfToken = typeof getCSRFToken === 'function' ? getCSRFToken : function () { return ''; };
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// ---- Auto-attach X-CSRF-Token to all state-changing requests ----
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// Monkey-patch XMLHttpRequest and fetch to inject CSRF header
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// Also intercept 401 responses to auto-refresh token
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(function () {
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var SAME_ORIGIN = /^\/(?!\/)/;
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var isRefreshing = false;
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var refreshPromise = null;
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var pendingRetries = [];
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// 优先从 cookie 读取 CSRF token（与服务端验证源一致），meta 标签作为后备
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function resolveCSRFToken() {
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var cookieMatch = document.cookie.match(/(?:^|;\s*)mlb_csrf=([^;]*)/);
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if (cookieMatch && cookieMatch[1]) return cookieMatch[1];
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var meta = document.querySelector('meta[name="csrf-token"]');
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return meta ? meta.getAttribute('content') : '';
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}
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function getCSRFTokenHeader() {
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var t = resolveCSRFToken();
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return t || window.MetaLab.csrfToken();
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}
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// ---- Token refresh logic ----
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function redirectToLogin() {
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// 避免在认证页面上造成无限跳转循环
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if (/^\/auth\//.test(window.location.pathname)) return;
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var returnURL = encodeURIComponent(window.location.pathname + window.location.search);
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window.location.href = '/auth/login?redirect=' + returnURL;
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}
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function doRefresh() {
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if (isRefreshing) return refreshPromise;
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isRefreshing = true;
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refreshPromise = fetch('/api/auth/refresh', { method: 'POST' })
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.then(function (res) {
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isRefreshing = false;
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refreshPromise = null;
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if (!res.ok) {
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// Refresh failed — clear all pending retries and redirect to login
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while (pendingRetries.length) {
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var r = pendingRetries.shift();
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r.reject(new Error('refresh_failed'));
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}
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redirectToLogin();
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return Promise.reject(new Error('refresh_failed'));
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}
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// Retry all pending requests
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while (pendingRetries.length) {
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var retry = pendingRetries.shift();
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retry.retry();
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}
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return true;
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})
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.catch(function (err) {
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isRefreshing = false;
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refreshPromise = null;
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while (pendingRetries.length) {
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var r2 = pendingRetries.shift();
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r2.reject(err);
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}
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redirectToLogin();
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return Promise.reject(err);
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});
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return refreshPromise;
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}
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// ---- Patch XMLHttpRequest ----
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var origXHROpen = XMLHttpRequest.prototype.open;
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var origXHRSend = XMLHttpRequest.prototype.send;
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XMLHttpRequest.prototype.open = function (method, url) {
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this._method = method;
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this._url = url;
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return origXHROpen.apply(this, arguments);
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};
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XMLHttpRequest.prototype.send = function () {
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var xhr = this;
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if (SAME_ORIGIN.test(xhr._url) &&
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xhr._method && !/^(GET|HEAD|OPTIONS)$/i.test(xhr._method)) {
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xhr.setRequestHeader('X-CSRF-Token', getCSRFTokenHeader());
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}
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// 401 interception for XHR
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// 保存原始 onreadystatechange 后立即清除，防止原生属性重复触发
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// 否则浏览器原生 onreadystatechange 和 addEventListener 监听器会各触发一次
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// 导致 Vditor 图片上传等场景下图片被插入两次
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var origOnReady = xhr.onreadystatechange;
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xhr.onreadystatechange = null;
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xhr.addEventListener('readystatechange', function () {
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if (xhr.readyState === 4 && xhr.status === 401 &&
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xhr._url !== '/api/auth/refresh' &&
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!xhr._retried) {
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xhr._retried = true;
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// Abort the original response handling
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xhr._blocked = true;
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doRefresh().then(function () {
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// Re-create and re-send the request
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var newXhr = new XMLHttpRequest();
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newXhr.open(xhr._method, xhr._url, true);
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// Copy relevant properties
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newXhr.onreadystatechange = origOnReady;
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newXhr.setRequestHeader('X-CSRF-Token', getCSRFTokenHeader());
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newXhr.send(xhr._body);
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}).catch(function () {
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// Refresh failed, trigger original error handler
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xhr._blocked = false;
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if (origOnReady) origOnReady.call(xhr);
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});
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}
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if (!xhr._blocked && origOnReady) {
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origOnReady.call(xhr);
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}
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});
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// Store body for potential retry
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if (xhr._method && !/^(GET|HEAD)$/i.test(xhr._method)) {
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xhr._body = arguments[0];
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}
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return origXHRSend.apply(xhr, arguments);
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};
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// ---- Patch fetch with 401 interceptor ----
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var origFetch = window.fetch;
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window.fetch = function (url, options) {
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options = options || {};
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var headers = options.headers || {};
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var method = (options.method || 'GET').toUpperCase();
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var urlStr = (typeof url === 'string') ? url : '';
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if (SAME_ORIGIN.test(urlStr) && !/^(GET|HEAD|OPTIONS)$/i.test(method)) {
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if (headers instanceof Headers) {
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headers.set('X-CSRF-Token', getCSRFTokenHeader());
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} else {
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headers['X-CSRF-Token'] = getCSRFTokenHeader();
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}
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options.headers = headers;
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}
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// Don't intercept the refresh request itself
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if (urlStr === '/api/auth/refresh') {
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return origFetch(url, options);
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}
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return origFetch(url, options).then(function (res) {
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if (res.status === 401) {
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// Clone the response so we can read it once for logging
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var cloned = res.clone();
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// Queue this request for retry after refresh
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return new Promise(function (resolve, reject) {
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pendingRetries.push({
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retry: function () {
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// Re-fetch with updated CSRF token
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var retryOpts = Object.assign({}, options);
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var retryHeaders = retryOpts.headers || {};
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if (retryHeaders instanceof Headers) {
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retryHeaders.set('X-CSRF-Token', getCSRFTokenHeader());
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} else {
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retryHeaders['X-CSRF-Token'] = getCSRFTokenHeader();
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}
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retryOpts.headers = retryHeaders;
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resolve(origFetch(url, retryOpts));
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},
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reject: function (err) {
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reject(err);
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}
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});
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doRefresh();
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});
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}
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return res;
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});
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};
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})();
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var menuBtn = document.getElementById('mobileMenuBtn');
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var navLinks = document.getElementById('navLinks');
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var scrollBtn = document.getElementById('scrollTopBtn');
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var menuIcon = '<svg class="icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round"><line x1="3" y1="6" x2="21" y2="6"/><line x1="3" y1="12" x2="21" y2="12"/><line x1="3" y1="18" x2="21" y2="18"/></svg>';
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var closeIcon = '<svg class="icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round"><line x1="18" y1="6" x2="6" y2="18"/><line x1="6" y1="6" x2="18" y2="18"/></svg>';
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// ---- Mobile menu toggle ----
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if (menuBtn && navLinks) {
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menuBtn.addEventListener('click', function () {
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navLinks.classList.toggle('active');
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menuBtn.innerHTML = navLinks.classList.contains('active') ? closeIcon : menuIcon;
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});
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}
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// ---- Close mobile menu on nav click ----
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var links = document.querySelectorAll('.nav-links a');
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for (var i = 0; i < links.length; i++) {
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links[i].addEventListener('click', function () {
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if (navLinks) {
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navLinks.classList.remove('active');
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}
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if (menuBtn) {
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menuBtn.innerHTML = menuIcon;
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}
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});
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}
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// ---- Smooth scroll for anchor links ----
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var anchors = document.querySelectorAll('a[href^="#"]');
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for (var j = 0; j < anchors.length; j++) {
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anchors[j].addEventListener('click', function (e) {
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var href = this.getAttribute('href');
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if (href === '#') return;
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var target = document.querySelector(href);
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if (target) {
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e.preventDefault();
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window.scrollTo({ top: target.offsetTop - 55, behavior: 'smooth' });
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}
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});
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}
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// ---- Scroll-to-top button ----
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if (scrollBtn) {
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window.addEventListener('scroll', function () {
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scrollBtn.classList.toggle('visible', window.scrollY > window.innerHeight * 0.5);
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});
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scrollBtn.addEventListener('click', function () {
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window.scrollTo({ top: 0, behavior: 'smooth' });
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});
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}
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// ---- Dev greeting ----
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console.log('%c🔨 嘿，开发者朋友！', 'color:#2ecc71;font-size:18px;font-weight:bold');
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console.log('%c欢迎来到 MetaLab 的蓝图页。', 'color:#34495e');
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console.log('%c我们正在搭建一个纯净、友好的下一代开发者社区。', 'color:#34495e');
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console.log('%c有任何想法或愿意参与早期测试？欢迎联系我们：metazone@foxmail.com', 'color:#e74c3c;font-style:italic');
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// ---- Logout ----
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var logoutBtn = document.getElementById('logoutBtn');
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if (logoutBtn) {
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logoutBtn.addEventListener('click', function () {
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var xhr = new XMLHttpRequest();
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xhr.open('POST', '/api/auth/logout', true);
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xhr.onreadystatechange = function () {
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if (xhr.readyState === 4) {
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window.location.href = '/';
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}
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};
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xhr.send();
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});
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}
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// ---- Unread message badge polling ----
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var msgBadge = document.getElementById('msgBadge');
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if (msgBadge) {
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var POLL_INTERVAL = 60 * 1000; // 1 minute
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function pollUnread() {
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fetch('/api/messages/unread')
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.then(function (res) {
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if (!res.ok) return;
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return res.json();
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})
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.then(function (data) {
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if (!data || !data.success) return;
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var count = data.data && data.data.unread ? data.data.unread : 0;
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msgBadge.textContent = count > 99 ? '99+' : count;
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msgBadge.style.display = count > 0 ? 'flex' : 'none';
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})
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.catch(function () {});
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}
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pollUnread();
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setInterval(pollUnread, POLL_INTERVAL);
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}
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// ---- Auto-refresh token (silent) ----
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// 场景 A：页面开着时，每 10 分钟静默续期（保持 access token 不过期）
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// 场景 B：关浏览器 15+ min 后回来，access token 过期但 refresh 仍有效
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// → 页面渲染为未登录 → 刷新成功后 reload 一次获得登录态
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// → 仅当页面是未登录状态（无 logoutBtn）时才触发 reload
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// 场景 C：编辑器等页面发 API 请求时遇到 401 → 由 fetch/XHR patch 自动刷新后重试
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// 不在认证页面执行刷新（登录/注册页无需续期）
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var onAuthPage = /^\/auth\//.test(window.location.pathname);
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if (!onAuthPage) {
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var REFRESH_INTERVAL = 10 * 60 * 1000; // 10 minutes
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var refreshTimer = null;
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function tryRefresh(callback) {
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fetch('/api/auth/refresh', { method: 'POST' })
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.then(function (res) {
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if (res.ok) {
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if (callback) callback();
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} else {
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if (refreshTimer) {
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clearInterval(refreshTimer);
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refreshTimer = null;
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}
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}
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})
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.catch(function () {
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if (refreshTimer) {
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clearInterval(refreshTimer);
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refreshTimer = null;
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}
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});
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}
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// 启动定时刷新：只要用户已登录（有 logoutBtn 元素），就定期刷新
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if (document.getElementById('logoutBtn')) {
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// 页面已经是登录态，启动定时刷新即可，无需 reload
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tryRefresh(function () {
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refreshTimer = setInterval(function () { tryRefresh(null); }, REFRESH_INTERVAL);
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});
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} else {
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// 场景 B：页面渲染为未登录（无 logoutBtn），但 refresh token 可能仍有效
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// 尝试刷新一次，成功后 reload 页面获取登录态
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// 使用 sessionStorage 防止死循环（reload 后再次进入此分支不会再 reload）
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if (!sessionStorage.getItem('mlb_refreshed')) {
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sessionStorage.setItem('mlb_refreshed', '1');
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tryRefresh(function () {
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window.location.reload();
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});
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}
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}
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} // end if (!onAuthPage)
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})();
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