// 主题初始化 (必须在渲染前执行, 防止闪白)
(function(){
  var s = localStorage.getItem("sensu-theme") || "dark";
  document.documentElement.setAttribute("data-theme", s);
})();

window.toggleTheme = function(){
  var t = document.documentElement.getAttribute("data-theme") === "light" ? "dark" : "light";
  document.documentElement.setAttribute("data-theme", t);
  localStorage.setItem("sensu-theme", t);
  var btn = document.querySelector(".theme-toggle");
  if(btn) btn.textContent = t === "light" ? "☀️" : "🌙";
};

// 初始化检查
window.onload = async () => {
  // 设置按钮初始图标
  var btn = document.querySelector(".theme-toggle");
  if(btn) btn.textContent = document.documentElement.getAttribute("data-theme") === "light" ? "☀️" : "🌙";
    try {
        const res = await fetch('./api/auth/status', { credentials: 'include' });
        if(res.status === 401) { window.location.href = './index.html'; return; }
        const data = await res.json();
        if(!data.authenticated) { window.location.href = './index.html'; return; }
        
        document.getElementById('uname').textContent = data.username || 'Admin';
        loadPage('dashboard'); // 默认加载
    } catch(e) { window.location.href = './index.html'; }
};

// 路由加载器

async function loadPage(pageName) {
    const content = document.getElementById('page-content');
    const bar = document.getElementById('progress');
    
    // 侧边栏高亮
    document.querySelectorAll('.nav-item').forEach(el => el.classList.remove('active'));
    document.querySelector(`.nav-item[data-page="${pageName}"]`)?.classList.add('active');
    
    // 进度条动画
    bar.classList.add('active'); bar.style.width = '0%';
    await new Promise(r => requestAnimationFrame(() => { bar.style.width = '80%'; setTimeout(r, 100); }));
    
    try {
        const resp = await fetch(`./static/pages/${pageName}.html`);
        if(!resp.ok) throw new Error('404');
        const html = await resp.text();

        // Extract inline scripts before innerHTML (browsers skip them)
        const scripts = [];
        const cleanHtml = html.replace(/<script\b[^>]*>([\s\S]*?)<\/script>/gi, (m, code) => {
            scripts.push(code.trim()); return '';
        });

        content.innerHTML = cleanHtml;

        // Execute inline scripts
        for(const code of scripts) {
            try { (new Function(code)).call(window); } catch(e) { console.error('Inline script error:', e); }
        }

        // Load external JS module (optional — skip if 404)
        try {
            const jsResp = await fetch(`./static/pages/${pageName}.js?t=${Date.now()}`);
            if(jsResp.ok) {
                const jsCode = await jsResp.text();
                (new Function(jsCode)).call(window);
                const moduleName = pageName.charAt(0).toUpperCase() + pageName.slice(1) + 'Module';
                if(window[moduleName]?.init) window[moduleName].init();
            }
        } catch(e) { /* JS module optional */ }

        bar.style.width = '100%';
        setTimeout(() => bar.classList.remove('active'), 200);
    } catch(e) {
        content.innerHTML = `<div style="color:var(--error); text-align:center; margin-top:20vh;">页面加载失败: ${e.message}</div>`;
        bar.style.background = 'var(--error)';
        setTimeout(() => { bar.style.width = '100%'; setTimeout(() => { bar.classList.remove('active'); bar.style.background = 'var(--primary)'; }, 200); }, 100);
    }
}


// 侧边栏切换
function toggleSidebar() {
    document.getElementById('app').classList.toggle('collapsed');
}

// 退出登录
async function doLogout() {
    await fetch('./api/logout', { method: 'POST', credentials: 'include' });
    window.location.href = './index.html';
}

// 点击侧边栏事件委托
document.addEventListener('click', (e) => {
    const nav = e.target.closest('.nav-item');
    if(nav) { loadPage(nav.dataset.page); e.preventDefault(); }
});