(function() { // Service Worker 注册 // PWA安装提示 let deferredPrompt; window.addEventListener('beforeinstallprompt', function(e) { e.preventDefault(); deferredPrompt = e; showInstallButton(); }); function showInstallButton() { if (document.getElementById('pwa-install-btn')) return; const btn = document.createElement('div'); btn.id = 'pwa-install-btn'; btn.innerHTML = '

📱 安装到桌面

'; btn.onclick = function() { if (deferredPrompt) { deferredPrompt.prompt(); deferredPrompt.userChoice.then(function(result) { console.log('PWA安装:', result.outcome); deferredPrompt = null; btn.remove(); }); } }; document.body.appendChild(btn); } window.addEventListener('appinstalled', function() { console.log('PWA已安装'); const btn = document.getElementById('pwa-install-btn'); if (btn) btn.remove(); deferredPrompt = null; }); if ('serviceWorker' in navigator) { window.addEventListener('load', function() { navigator.serviceWorker.register('/sw.js') .then(function(registration) { console.log('ServiceWorker 注册成功:', registration.scope); // 检查更新 registration.addEventListener('updatefound', function() { const newWorker = registration.installing; if (newWorker) { newWorker.addEventListener('statechange', function() { if (newWorker.state === 'installed' && navigator.serviceWorker.controller) { // 新版本已安装，等待激活 showUpdateNotification(); } }); } }); }) .catch(function(err) { console.log('ServiceWorker 注册失败:', err); }); // 刷新页面以获取新版本 navigator.serviceWorker.addEventListener('controllerchange', function() { if (navigator.serviceWorker.controller) { window.location.reload(); } }); }); // 处理未安装成功的情况 window.addEventListener('online', updateOnlineStatus); window.addEventListener('offline', updateOnlineStatus); } function showUpdateNotification() { const notification = document.createElement('div'); notification.id = 'sw-update-notification'; const notifStyle = "position:fixed;bottom:80px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,#8B0000,#B22222);color:white;padding:16px 24px;border-radius:12px;box-shadow:0 4px 20px rgba(139,0,0,0.3);z-index:10000;font-family:'Georgia',serif;text-align:center;max-width:90%;animation:slideUp 0.3s ease-out;"; const btnStyle = "margin-top:12px;background:white;color:#8B0000;border:none;padding:8px 20px;border-radius:20px;font-weight:bold;cursor:pointer;font-size:14px;"; notification.innerHTML = '

有新版本可用

点击刷新以获取最新版本

'; document.body.appendChild(notification); setTimeout(() => { if (notification.parentNode) notification.parentNode.removeChild(notification); }, 30000); } function updateOnlineStatus() { const status = navigator.onLine ? 'online' : 'offline'; console.log('网络状态:', status); // 显示离线提示 if (!navigator.onLine) { showOfflineToast(); } else { hideOfflineToast(); } } function showOfflineToast() { if (document.getElementById('offline-toast')) return; const toast = document.createElement('div'); toast.id = 'offline-toast'; const toastStyle = "position:fixed;top:20px;left:50%;transform:translateX(-50%);background:#333;color:white;padding:12px 24px;border-radius:8px;z-index:10000;font-family:system-ui,sans-serif;box-shadow:0 2px 10px rgba(0,0,0,0.2);display:flex;align-items:center;gap:8px;"; toast.innerHTML = '

📡当前处于离线模式

'; document.body.appendChild(toast); } function hideOfflineToast() { const toast = document.getElementById('offline-toast'); if (toast) { toast.parentNode.removeChild(toast); } } const style = document.createElement('style'); style.textContent = 'button,a,[role=button]{-webkit-tap-highlight-color:rgba(139,0,0,0.2);touch-action:manipulation;}html{-webkit-overflow-scrolling:touch;}body{-webkit-overflow-scrolling:touch;}@supports(padding:max(0px)){body{padding-left:max(0px,env(safe-area-inset-left));padding-right:max(0px,env(safe-area-inset-right));padding-bottom:max(0px,env(safe-area-inset-bottom));}}'; document.head.appendChild(style); })(); fetch("/api/visit-track",{method:"POST",headers:{"Content-Type":"application/json"},body:JSON.stringify({pathname:window.location.pathname})}).catch(function(){});

六经辨证入门