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MetaLab/templates/MetaLab-2026/static/js/common.js

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/* ============================================================
MetaLab Common JS — 全站共享脚本
============================================================ */
(function () {
'use strict';
// ---- Shared utils (exposed to other scripts via window.MetaLab) ----
window.MetaLab = window.MetaLab || {};
var toastTimer = null;
window.MetaLab.toast = function (el, msg, isError) {
if (!el) return;
clearTimeout(toastTimer);
el.textContent = msg;
el.className = 'toast' + (isError ? ' error' : '');
void el.offsetWidth;
el.classList.add('show');
toastTimer = setTimeout(function () {
el.classList.remove('show');
}, 3000);
};
// ---- CSRF token helper (reads from <meta> tag rendered by server) ----
window.MetaLab.csrfToken = function () {
var meta = document.querySelector('meta[name="csrf-token"]');
return meta ? meta.getAttribute('content') : '';
};
// ---- Auto-attach X-CSRF-Token to all state-changing requests ----
// Monkey-patch XMLHttpRequest and fetch to inject CSRF header
(function () {
var token = window.MetaLab.csrfToken();
if (!token) return;
// Patch XMLHttpRequest (used by register.js / login.js / common.js)
var origXHROpen = XMLHttpRequest.prototype.open;
var origXHRSend = XMLHttpRequest.prototype.send;
XMLHttpRequest.prototype.open = function (method, url) {
this._method = method;
this._url = url;
return origXHROpen.apply(this, arguments);
};
var SAME_ORIGIN = /^\/(?!\/)/;
XMLHttpRequest.prototype.send = function () {
if (SAME_ORIGIN.test(this._url) &&
this._method && !/^(GET|HEAD|OPTIONS)$/i.test(this._method)) {
this.setRequestHeader('X-CSRF-Token', token);
}
return origXHRSend.apply(this, arguments);
};
// Patch fetch (used by auto-refresh)
var origFetch = window.fetch;
window.fetch = function (url, options) {
options = options || {};
var headers = options.headers || {};
var method = (options.method || 'GET').toUpperCase();
var urlStr = (typeof url === 'string') ? url : '';
if (SAME_ORIGIN.test(urlStr) && !/^(GET|HEAD|OPTIONS)$/i.test(method)) {
if (headers instanceof Headers) {
headers.set('X-CSRF-Token', token);
} else {
headers['X-CSRF-Token'] = token;
}
options.headers = headers;
}
return origFetch(url, options);
};
})();
var menuBtn = document.getElementById('mobileMenuBtn');
var navLinks = document.getElementById('navLinks');
var scrollBtn = document.getElementById('scrollTopBtn');
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>';
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>';
// ---- Mobile menu toggle ----
if (menuBtn && navLinks) {
menuBtn.addEventListener('click', function () {
navLinks.classList.toggle('active');
menuBtn.innerHTML = navLinks.classList.contains('active') ? closeIcon : menuIcon;
});
}
// ---- Close mobile menu on nav click ----
var links = document.querySelectorAll('.nav-links a');
for (var i = 0; i < links.length; i++) {
links[i].addEventListener('click', function () {
if (navLinks) {
navLinks.classList.remove('active');
}
if (menuBtn) {
menuBtn.innerHTML = menuIcon;
}
});
}
// ---- Smooth scroll for anchor links ----
var anchors = document.querySelectorAll('a[href^="#"]');
for (var j = 0; j < anchors.length; j++) {
anchors[j].addEventListener('click', function (e) {
var href = this.getAttribute('href');
if (href === '#') return;
var target = document.querySelector(href);
if (target) {
e.preventDefault();
window.scrollTo({ top: target.offsetTop - 55, behavior: 'smooth' });
}
});
}
// ---- Scroll-to-top button ----
if (scrollBtn) {
window.addEventListener('scroll', function () {
scrollBtn.classList.toggle('visible', window.scrollY > window.innerHeight * 0.5);
});
scrollBtn.addEventListener('click', function () {
window.scrollTo({ top: 0, behavior: 'smooth' });
});
}
// ---- Dev greeting ----
console.log('%c🔨 嘿,开发者朋友!', 'color:#2ecc71;font-size:18px;font-weight:bold');
console.log('%c欢迎来到 MetaLab 的蓝图页。', 'color:#34495e');
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');
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');
// ---- Logout ----
var logoutBtn = document.getElementById('logoutBtn');
if (logoutBtn) {
logoutBtn.addEventListener('click', function () {
var xhr = new XMLHttpRequest();
xhr.open('POST', '/api/auth/logout', true);
xhr.onreadystatechange = function () {
if (xhr.readyState === 4) {
window.location.href = '/';
}
};
xhr.send();
});
}
// ---- Auto-refresh token (silent) ----
// 场景 A页面开着时每 10 分钟静默续期(保持 access token 不过期)
// 场景 B关浏览器 15+ min 后回来access token 过期但 refresh 仍有效
// → 页面先渲染为未登录 → 刷新成功后 reload 一次获得登录态
// 不在认证页面执行刷新(登录/注册页无需续期)
var onAuthPage = /^\/auth\//.test(window.location.pathname);
if (!onAuthPage) {
var REFRESH_INTERVAL = 10 * 60 * 1000; // 10 minutes
var refreshTimer = null;
function tryRefresh(callback) {
fetch('/api/auth/refresh', { method: 'POST' })
.then(function (res) {
if (res.ok) {
if (callback) callback();
} else {
if (refreshTimer) {
clearInterval(refreshTimer);
refreshTimer = null;
}
}
})
.catch(function () {
if (refreshTimer) {
clearInterval(refreshTimer);
refreshTimer = null;
}
});
}
// 仅当存在"记住我"标记 Cookie 时才尝试刷新(避免无需刷新时产生 401 控制台报错)
function hasCookie(name) {
return document.cookie.split(';').some(function (c) {
return c.trim().startsWith(name + '=');
});
}
if (hasCookie('mlb_rm')) {
tryRefresh(function () {
refreshTimer = setInterval(function () { tryRefresh(null); }, REFRESH_INTERVAL);
if (!document.getElementById('logoutBtn') && !sessionStorage.getItem('mlb_refreshed')) {
sessionStorage.setItem('mlb_refreshed', '1');
window.location.reload();
}
});
sessionStorage.removeItem('mlb_refreshed');
}
} // end if (!onAuthPage)
})();