<?php
session_start();
$expire = 1800;
if (empty($_SESSION['user_id']) || (time() - $_SESSION['login_time'] > $expire)) {
    session_destroy();
    header("Location: login.php");
    exit;
}
$_SESSION['login_time'] = time();
$userName = htmlspecialchars($_SESSION['username']);
$userRole = $_SESSION['role'];
$roleText = $userRole === 'admin' ? '管理员' : '只读用户';

$configFile = "./api/system_config.json";
$sysConfig = json_decode(file_get_contents($configFile),true);
$themeColor = $sysConfig['theme_color'];
$cardBg = $sysConfig['card_bg'];
$bodyBg = $sysConfig['body_bg'];
$fontFamily = $sysConfig['font_family'];
$customLinks = $sysConfig['sidebar_links'];
?>
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Advantest 爱德万测试 - 运维告警监控平台</title>
<link rel="stylesheet" href="/static/css/font-awesome.min.css">
<script src="/static/js/echarts.min.js"></script>
<script src="/static/js/jquery.min.js"></script>
<style>
:root{
    --theme-main: <?php echo $themeColor; ?>;
    --card-bg: <?php echo $cardBg; ?>;
    --body-bg: <?php echo $bodyBg; ?>;
    --font-main: <?php echo $fontFamily; ?>;
}
*{box-sizing:border-box;margin:0;padding:0}
body{
    background:var(--body-bg);
    font-family:var(--font-main);
    color:#1d2939;
    line-height:1.6;
    display:flex;
    flex-direction:column;
    height:100vh;
    overflow:hidden;
}
.wrap-main{
    display:flex;
    flex:1;
    overflow:hidden;
}
.sidebar{
    width:240px;
    background:var(--theme-main);
    color:#e2e8f0;
    flex-shrink:0;
    overflow-y:auto;
}
.sidebar-brand{
    padding:26px 24px;
    border-bottom:1px solid rgba(255,255,255,0.1);
}
.sidebar-brand-en{
    font-size:20px;
    font-weight:700;
    letter-spacing:1px;
    color:#fff;
}
.sidebar-brand-cn{
    font-size:13px;
    color:#a5b4fc;
    margin-top:4px;
}
.sidebar-menu{
    padding:16px 0;
}
.menu-title{
    padding:10px 24px;
    font-size:12px;
    color:#94a3b8;
    letter-spacing:1px;
}
.menu-item{
    display:flex;
    align-items:center;
    gap:12px;
    padding:14px 24px;
    cursor:pointer;
    font-size:14px;
    transition:0.2s;
    color:#cbd5e1;
}
.menu-item i{
    font-size:16px;
    width:20px;
    text-align:center;
}
.menu-item.active{
    background:rgba(255,255,255,0.12);
    color:#fff;
    border-left:4px solid #3b82f6;
}
.menu-item:hover:not(.active){
    background:rgba(255,255,255,0.06);
    color:#fff;
}
.main-content{
    flex:1;
    overflow-y:auto;
    display:flex;
    flex-direction:column;
}
.header{
    background:#ffffff;
    border-bottom:1px solid #eef2fb;
    color:var(--theme-main);
    padding:20px 40px;
    display:flex;
    justify-content:space-between;
    align-items:center;
    box-shadow:0 2px 12px rgba(21,44,91,0.05);
    flex-shrink:0;
}
.header-left{
    display:flex;
    align-items:center;
    gap:14px;
}
.header-brand-en{
    font-size:24px;
    font-weight:700;
    letter-spacing:2px;
    color:var(--theme-main);
}
.header-brand-cn{
    font-size:15px;
    color:#64748b;
}
.header-right{
    display:flex;
    align-items:center;
    gap:18px;
    font-size:14px;
    flex-wrap:wrap;
}
.user-info,.time-info{
    color:#475569;
    display:flex;
    align-items:center;
    gap:6px;
}
.btn-base{
    border:none;
    padding:9px 20px;
    border-radius:8px;
    cursor:pointer;
    font-size:14px;
    display:flex;
    align-items:center;
    gap:6px;
    transition:all 0.2s ease;
}
.btn-outline{
    background:#ffffff;
    color:var(--theme-main);
    border:1px solid #cbd5e1;
}
.btn-outline:hover{
    background:#f7f8fc;
    border-color:var(--theme-main);
}
.btn-primary{
    background:var(--theme-main);
    color:#fff;
}
.btn-primary:hover{
    background:#0f1e42;
}
.btn-success{
    background:#10b981;
    color:#fff;
}
.btn-success:hover{
    background:#059669;
}
.mask{
    position:fixed;
    left:0;top:0;
    width:100%;height:100%;
    background:rgba(255,255,255,0.85);
    display:none;
    z-index:999;
    align-items:center;
    justify-content:center;
}
.mask-box{
    background:#fff;
    padding:30px 40px;
    border-radius:14px;
    font-size:15px;
    display:flex;
    gap:14px;
    align-items:center;
    box-shadow:0 8px 30px rgba(21,44,91,0.12);
    border:1px solid #eef2fb;
}
.loading{
    display:inline-block;
    width:20px;height:20px;
    border:2px solid #e2e8f0;
    border-top-color:var(--theme-main);
    border-radius:50%;
    animation:spin 0.8s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.container{
    padding:36px 40px;
    max-width:100%;
    flex:1;
}
.page-panel{
    display:none;
}
.page-panel.active{
    display:block;
}
.stat-cards{
    display:grid;
    grid-template-columns:repeat(5,1fr);
    gap:28px;
    margin-bottom:36px;
}
.stat-card{
    background:var(--card-bg);
    border-radius:16px;
    padding:32px;
    box-shadow:0 3px 18px rgba(21,44,91,0.06);
    border:1px solid #eef2fb;
    transition:transform 0.26s,box-shadow 0.26s;
}
.stat-card:hover{
    transform:translateY(-6px);
    box-shadow:0 10px 32px rgba(21,44,91,0.09);
}
.stat-header{
    display:flex;
    justify-content:space-between;
    align-items:flex-start;
    margin-bottom:20px;
}
.stat-title{
    font-size:14px;
    color:#64748b;
}
.stat-icon{
    width:46px;height:46px;
    border-radius:12px;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:20px;
}
.stat-card.fire .stat-icon{background:#fee2e2;color:#dc2626}
.stat-card.active .stat-icon{background:#fef3c7;color:#d97706}
.stat-card.resolve .stat-icon{background:#dcfce7;color:#16a34a}
.stat-card.instance .stat-icon{background:#dbeafe;color:#2563eb}
.stat-card.rate .stat-icon{background:#ffedd5;color:#ea580c}
.stat-value{
    font-size:44px;
    font-weight:700;
    color:var(--theme-main);
    letter-spacing:1px;
    line-height:1.1;
}
.stat-card.active .stat-value{color:#d97706}
.stat-sub{
    font-size:12px;
    color:#94a3b8;
    margin-top:8px;
}
.chart-section,.active-alert-section,.table-section,.disk-section,.setting-section{
    margin-bottom:36px;
}
.base-card{
    background:var(--card-bg);
    border-radius:16px;
    padding:32px;
    box-shadow:0 3px 18px rgba(21,44,91,0.06);
    border:1px solid #eef2fb;
}
.title-wrap{
    display:flex;
    justify-content:space-between;
    align-items:center;
    margin-bottom:26px;
    padding-bottom:16px;
    border-bottom:1px solid #eef2fb;
}
.title-left{
    display:flex;
    align-items:center;
    gap:12px;
    font-size:19px;
    font-weight:600;
    color:var(--theme-main);
}
.title-left i{color:#2563eb;font-size:21px}
.table-count{font-size:14px;color:#64748b}
.filter-box{
    display:flex;
    align-items:center;
    gap:10px;
}
.filter-box label{
    font-size:14px;
    color:#475569;
}
#ipSelect{
    padding:6px 10px;
    border:1px solid #cbd5e0;
    border-radius:6px;
    font-size:14px;
    min-width:200px;
}
#diskExportBtn{
    padding:6px 14px;
    background:#2b6cb0;
    color:#fff;
    border:none;
    border-radius:6px;
    cursor:pointer;
    font-size:14px;
}
#diskExportBtn:hover{
    background:#2c5282;
}
#chart1{height:420px;width:100%}
.active-alert-section .base-card{border:1px solid #fee2e2}
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:14px}
th{
    background:#f9fafc;
    color:#475569;
    font-weight:600;
    padding:16px 18px;
    text-align:left;
    border-bottom:2px solid #e2e8f0;
    white-space:nowrap;
}
th i{margin-right:6px;font-size:13px;color:#94a3b8}
td{
    padding:18px;
    border-bottom:1px solid #f1f5f9;
    color:#334155;
}
tbody tr{transition:background 0.2s}
tbody tr:hover{background:#f7f8fc}
tbody tr:nth-child(even){background:#fbfcfe}
.status-tag{
    display:inline-flex;
    align-items:center;
    gap:5px;
    padding:6px 14px;
    border-radius:24px;
    font-size:13px;
    font-weight:500;
}
.status-tag.fire{background:#fee2e2;color:#dc2626}
.status-tag.resolve{background:#dcfce7;color:#16a34a}
.severity-tag{
    display:inline-block;
    padding:5px 12px;
    border-radius:8px;
    font-size:13px;
    font-weight:500;
}
.severity-critical{background:#fee2e2;color:#dc2626}
.severity-warning{background:#ffedd5;color:#ea580c}
.severity-info{background:#dbeafe;color:#2563eb}
.num-big {
    color: #c53030;
    font-weight: 500;
}
.empty-state{
    text-align:center;
    padding:80px 20px;
    color:#94a3b8;
    font-size:15px;
}
.empty-icon{
    font-size:56px;
    margin-bottom:18px;
    opacity:0.35;
}
.form-row{
    display:flex;
    gap:16px;
    align-items:center;
    margin-bottom:22px;
    flex-wrap:wrap;
}
.form-label{
    width:160px;
    font-size:14px;
    font-weight:500;
    color:#334155;
}
.form-input{
    flex:1;
    min-width:260px;
    padding:10px 12px;
    border:1px solid #cbd5e0;
    border-radius:8px;
    font-size:14px;
}
.color-input{
    width:80px;height:40px;border:none;cursor:pointer;
}
.link-item{
    display:flex;
    gap:10px;
    align-items:center;
    padding:12px;
    border:1px solid #e2e8f0;
    border-radius:8px;
    margin-bottom:10px;
}
.del-link{
    color:#dc2626;
    cursor:pointer;
}
@media (max-width:1440px){.stat-cards{grid-template-columns:repeat(3,1fr)}}
@media (max-width:992px){
    .wrap-main{flex-direction:column;}
    .sidebar{width:100%;height:auto}
}
@media (max-width:768px){
    .header{padding:16px 24px;flex-direction:column;gap:16px;align-items:flex-start}
    .header-right{flex-wrap:wrap}
    .container{padding:24px}
    .stat-cards{grid-template-columns:1fr;gap:20px}
    .stat-card{padding:24px}
    .base-card{padding:24px}
    .filter-box{flex-wrap:wrap;}
    .form-row{flex-direction:column;align-items:flex-start;}
    .form-label{width:100%;}
}
</style>
</head>
<body>
<div class="mask" id="exportMask">
    <div class="mask-box">
        <span class="loading"></span>
        <span>正在生成CSV报表，请稍候...</span>
    </div>
</div>

<div class="wrap-main">
    <div class="sidebar">
        <div class="sidebar-brand">
            <div class="sidebar-brand-en">Advantest</div>
            <div class="sidebar-brand-cn">运维监控管理后台</div>
        </div>
        <div class="sidebar-menu">
            <div class="menu-title">监控面板</div>
            <div class="menu-item active" data-page="alertPage">
                <i class="fa fa-line-chart"></i>
                <span>告警监控总览</span>
            </div>
            <div class="menu-item" data-page="diskPage">
                <i class="fa fa-hdd-o"></i>
                <span>服务器磁盘容量</span>
            </div>

            <div class="menu-title">系统管理</div>
            <div class="menu-item" data-page="pwdPage">
                <i class="fa fa-key"></i>
                <span>修改登录密码</span>
            </div>
            <div class="menu-item" data-page="stylePage">
                <i class="fa fa-paint-brush"></i>
                <span>界面外观配置</span>
            </div>
            <div class="menu-item" data-page="linkPage">
                <i class="fa fa-link"></i>
                <span>侧边栏外链管理</span>
            </div>

            <?php foreach($customLinks as $link): ?>
            <div class="menu-item" onclick="window.open('<?php echo $link['url']; ?>','<?php echo $link['target']; ?>')">
                <i class="fa <?php echo $link['icon']; ?>"></i>
                <span><?php echo $link['title']; ?></span>
            </div>
            <?php endforeach; ?>
        </div>
    </div>

    <div class="main-content">
        <div class="header">
            <div class="header-left">
                <div>
                    <div class="header-brand-en">Advantest</div>
                    <div class="header-brand-cn">爱德万测试 · 运维告警监控平台</div>
                </div>
            </div>
            <div class="header-right">
                <span class="user-info"><i class="fa fa-user-circle"></i>当前用户：<?php echo $userName; ?>（<?php echo $roleText; ?>）</span>
                <span class="time-info"><i class="fa fa-clock-o"></i>系统时间：<span id="updateTime">--</span></span>
                <button class="btn-base btn-outline" onclick="loadAllData()"><i class="fa fa-refresh"></i>刷新全部数据</button>
                <button class="btn-base btn-success" onclick="exportCsv()"><i class="fa fa-download"></i>导出告警CSV</button>
                <button class="btn-base btn-primary" id="logoutBtn"><i class="fa fa-sign-out"></i>退出登录</button>
            </div>
        </div>

        <div class="container">
            <div class="page-panel active" id="alertPage">
                <div class="stat-cards">
                    <div class="stat-card fire">
                        <div class="stat-header">
                            <div class="stat-title">今日触发告警</div>
                            <div class="stat-icon"><i class="fa fa-exclamation-triangle"></i></div>
                        </div>
                        <div class="stat-value" id="fire">0</div>
                        <div class="stat-sub">Total Firing Today</div>
                    </div>
                    <div class="stat-card active">
                        <div class="stat-header">
                            <div class="stat-title">当前未恢复告警</div>
                            <div class="stat-icon"><i class="fa fa-bolt"></i></div>
                        </div>
                        <div class="stat-value" id="activeAlert">0</div>
                        <div class="stat-sub">Unresolved Now</div>
                    </div>
                    <div class="stat-card resolve">
                        <div class="stat-header">
                            <div class="stat-title">今日恢复告警</div>
                            <div class="stat-icon"><i class="fa fa-check-circle"></i></div>
                        </div>
                        <div class="stat-value" id="resolve">0</div>
                        <div class="stat-sub">Resolved Today</div>
                    </div>
                    <div class="stat-card instance">
                        <div class="stat-header">
                            <div class="stat-title">故障实例总数</div>
                            <div class="stat-icon"><i class="fa fa-server"></i></div>
                        </div>
                        <div class="stat-value" id="instance">0</div>
                        <div class="stat-sub">Affected Host Instance</div>
                    </div>
                    <div class="stat-card rate">
                        <div class="stat-header">
                            <div class="stat-title">告警恢复率</div>
                            <div class="stat-icon"><i class="fa fa-line-chart"></i></div>
                        </div>
                        <div class="stat-value" id="rate">0%</div>
                        <div class="stat-sub">Daily Recovery Rate</div>
                    </div>
                </div>

                <div class="chart-section">
                    <div class="base-card">
                        <div class="title-wrap">
                            <div class="title-left"><i class="fa fa-bar-chart"></i>今日告警频次 TOP 10</div>
                        </div>
                        <div id="chart1"></div>
                    </div>
                </div>

                <div class="active-alert-section">
                    <div class="base-card">
                        <div class="title-wrap">
                            <div class="title-left"><i class="fa fa-exclamation-circle"></i>当前未恢复活跃告警</div>
                            <div class="table-count">共 <span id="activeCount">0</span> 条未恢复故障</div>
                        </div>
                        <div class="table-wrap">
                            <table>
                                <thead>
                                    <tr>
                                        <th style="width:100px"><i class="fa fa-tag"></i>告警状态</th>
                                        <th><i class="fa fa-bullhorn"></i>告警名称</th>
                                        <th><i class="fa fa-desktop"></i>实例地址</th>
                                        <th style="width:120px"><i class="fa fa-signal"></i>告警级别</th>
                                        <th style="width:200px"><i class="fa fa-calendar"></i>故障发生时间</th>
                                    </tr>
                                </thead>
                                <tbody id="active-table-body">
                                    <tr>
                                        <td colspan="5">
                                            <div class="empty-state">
                                                <div class="empty-icon"><i class="fa fa-check"></i></div>
                                                <div>当前无未恢复告警，系统运行正常</div>
                                            </div>
                                        </td>
                                    </tr>
                                </tbody>
                            </table>
                        </div>
                    </div>
                </div>

                <div class="table-section">
                    <div class="base-card">
                        <div class="title-wrap">
                            <div class="title-left"><i class="fa fa-list-alt"></i>今日全量告警明细列表</div>
                            <div class="table-count">共 <span id="totalCount">0</span> 条告警记录</div>
                        </div>
                        <div class="table-wrap">
                            <table>
                                <thead>
                                    <tr>
                                        <th style="width:100px"><i class="fa fa-tag"></i>告警状态</th>
                                        <th><i class="fa fa-bullhorn"></i>告警名称</th>
                                        <th><i class="fa fa-desktop"></i>实例地址</th>
                                        <th style="width:120px"><i class="fa fa-signal"></i>告警级别</th>
                                        <th style="width:200px"><i class="fa fa-calendar"></i>故障发生时间</th>
                                    </tr>
                                </thead>
                                <tbody id="table-body">
                                    <tr>
                                        <td colspan="5">
                                            <div class="empty-state">
                                                <div class="empty-icon"><i class="fa fa-folder-open-o"></i></div>
                                                <div>暂无今日告警数据</div>
                                            </div>
                                        </td>
                                    </tr>
                                </tbody>
                            </table>
                        </div>
                    </div>
                </div>
            </div>

            <div class="page-panel" id="diskPage">
                <div class="disk-section">
                    <div class="base-card">
                        <div class="title-wrap">
                            <div class="title-left"><i class="fa fa-hdd-o"></i>用户目录磁盘占用统计</div>
                            <div class="filter-box">
                                <label>筛选实例IP：</label>
                                <select id="ipSelect">
                                    <option value="all">全部实例</option>
                                </select>
                                <button id="diskExportBtn">导出当前表格CSV</button>
                            </div>
                        </div>
                        <div class="table-wrap">
                            <table>
                                <thead>
                                    <tr>
                                        <th>实例IP</th>
                                        <th>用户名</th>
                                        <th>目录路径</th>
                                        <th>占用容量</th>
                                    </tr>
                                </thead>
                                <tbody id="diskTableBody">
                                    <tr>
                                        <td colspan="4" class="empty-state">
                                            <div class="empty-icon"><i class="fa fa-spinner fa-spin"></i></div>
                                            <div>磁盘数据加载中...</div>
                                        </td>
                                    </tr>
                                </tbody>
                            </table>
                        </div>
                    </div>
                </div>
            </div>

            <div class="page-panel setting-section" id="pwdPage">
                <div class="base-card">
                    <div class="title-wrap">
                        <div class="title-left"><i class="fa fa-key"></i>修改登录密码</div>
                    </div>
                    <form id="pwdForm">
                        <div class="form-row">
                            <label class="form-label">原登录密码</label>
                            <input class="form-input" type="password" name="old_pwd" placeholder="输入当前密码" required>
                        </div>
                        <div class="form-row">
                            <label class="form-label">新登录密码</label>
                            <input class="form-input" type="password" name="new_pwd" placeholder="设置新密码" required>
                        </div>
                        <div class="form-row">
                            <label class="form-label">确认新密码</label>
                            <input class="form-input" type="password" name="confirm_pwd" placeholder="再次输入新密码" required>
                        </div>
                        <div class="form-row">
                            <label class="form-label"></label>
                            <button type="submit" class="btn-base btn-primary">提交修改密码</button>
                        </div>
                    </form>
                </div>
            </div>

            <div class="page-panel setting-section" id="stylePage">
                <div class="base-card">
                    <div class="title-wrap">
                        <div class="title-left"><i class="fa fa-paint-brush"></i>界面主题样式配置</div>
                    </div>
                    <form id="styleForm">
                        <div class="form-row">
                            <label class="form-label">侧边栏/主题主色</label>
                            <input class="color-input" type="color" name="theme_color" value="<?php echo $themeColor; ?>">
                            <span>十六进制颜色值</span>
                        </div>
                        <div class="form-row">
                            <label class="form-label">卡片背景色</label>
                            <input class="color-input" type="color" name="card_bg" value="<?php echo $cardBg; ?>">
                        </div>
                        <div class="form-row">
                            <label class="form-label">页面全局背景</label>
                            <input class="color-input" type="color" name="body_bg" value="<?php echo $bodyBg; ?>">
                        </div>
                        <div class="form-row">
                            <label class="form-label">全局字体</label>
                            <input class="form-input" name="font_family" value="<?php echo $fontFamily; ?>">
                        </div>
                        <div class="form-row">
                            <label class="form-label"></label>
                            <button type="submit" class="btn-base btn-primary">保存样式配置（刷新生效）</button>
                        </div>
                    </form>
                </div>
            </div>

            <div class="page-panel setting-section" id="linkPage">
                <div class="base-card">
                    <div class="title-wrap">
                        <div class="title-left"><i class="fa fa-link"></i>侧边栏自定义外链管理</div>
                        <button class="btn-base btn-outline" id="addLinkBtn"><i class="fa fa-plus"></i>新增一条外链</button>
                    </div>
                    <div id="linkListBox"></div>
                    <div style="margin-top:24px">
                        <button class="btn-base btn-primary" id="saveLinkBtn">保存全部外链配置</button>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

<script>
const api = "http://10.150.117.190:8080/api/index.php";
const configApi = "./api/config_save.php";
const pwdApi = "./api/user_pass.php";
let chartInstance = null;
let diskSourceData = [];
let currentDiskIp = "all";
let linkData = [];

$(".menu-item").click(function(){
    const pageId = $(this).data("page");
    if(!pageId) return;
    $(".menu-item").removeClass("active");
    $(this).addClass("active");
    $(".page-panel").removeClass("active");
    $("#"+pageId).addClass("active");
    if(pageId === "diskPage") loadDiskData();
    if(pageId === "linkPage") loadLinkConfig();
})

function formatTime(dateStr){
    if(!dateStr || dateStr === '0001-01-01 00:00:00' || dateStr === null) return '-';
    return dateStr;
}
function getSeverityTag(severity){
    const s = (severity || '').toLowerCase();
    if(s==='critical') return `<span class="severity-tag severity-critical">严重</span>`;
    if(s==='warning') return `<span class="severity-tag severity-warning">警告</span>`;
    if(s==='info') return `<span class="severity-tag severity-info">信息</span>`;
    return `<span class="severity-tag severity-info">${severity||'-'}</span>`;
}

function loadActiveAlert(){
    $.getJSON(api+"?act=active_firing",function(list){
        $("#activeAlert").text(list.length);
        $("#activeCount").text(list.length);
        if(list.length===0){
            $("#active-table-body").html(`<tr><td colspan="5"><div class="empty-state"><div class="empty-icon"><i class="fa fa-check"></i></div><div>当前无未恢复告警，系统运行正常</div></div></td></tr>`);
            return;
        }
        let html="";
        list.forEach(row=>{
            const t=`<span class="status-tag fire"><i class="fa fa-bolt"></i>触发</span>`;
            html+=`<tr>
                <td>${t}</td>
                <td style="font-weight:500;color:var(--theme-main)">${row.alert_name||'-'}</td>
                <td style="font-family:Consolas,monospace;font-size:13px">${row.instance||'-'}</td>
                <td>${getSeverityTag(row.severity)}</td>
                <td style="color:#475569">${formatTime(row.receive_time)}</td>
            </tr>`;
        });
        $("#active-table-body").html(html);
    }).fail(()=>{
        $("#activeAlert").text("-");
        $("#active-table-body").html(`<tr><td colspan="5"><div class="empty-state" style="color:#dc2626"><div class="empty-icon"><i class="fa fa-exclamation-circle"></i></div><div>活跃告警数据加载失败，请重新登录</div></div></td></tr>`);
    });
}

function loadStats(){
    $.getJSON(api+"?act=day_total",function(res){
        const fire=parseInt(res.fire_count)||0;
        const resolve=parseInt(res.resolve_count)||0;
        const ins=parseInt(res.instance_num)||0;
        const rate=fire>0?Math.round((resolve/fire)*100):0;
        $("#fire").text(fire);
        $("#resolve").text(resolve);
        $("#instance").text(ins);
        $("#rate").text(rate+"%");
    }).fail(()=>{$("#fire,#resolve,#instance,#rate").text("-");});
}

function loadChart(){
    $.getJSON(api+"?act=top_alert",function(list){
        if(!chartInstance){
            chartInstance=echarts.init(document.getElementById("chart1"));
            window.addEventListener("resize",()=>chartInstance.resize());
        }
        const names=list.map(i=>i.alert_name);
        const cnt=list.map(i=>i.cnt);
        chartInstance.setOption({
            tooltip:{trigger:"axis",axisPointer:{type:"shadow"}},
            grid:{left:"3%",right:"4%",bottom:"18%",top:"8%",containLabel:true},
            xAxis:{
                type:"category",
                data:names,
                axisLabel:{rotate:30,fontSize:12,color:"#64748b"},
                axisLine:{lineStyle:{color:"#e2e8f0"}},
                axisTick:{show:false}
            },
            yAxis:{
                type:"value",
                name:"告警次数",
                nameTextStyle:{color:"#64748b",fontSize:13},
                axisLabel:{color:"#64748b",fontSize:12},
                splitLine:{lineStyle:{color:"#f1f5f9",type:"dashed"}},
                axisLine:{show:false}
            },
            series:[{
                type:"bar",
                data:cnt,
                barWidth:"48%",
                itemStyle:{
                    color:new echarts.graphic.LinearGradient(0,0,0,1,[
                        {offset:0,color:"#3b82f6"},
                        {offset:1,color:"#1d4ed8"}
                    ]),
                    borderRadius:[6,6,0,0]
                },
                label:{show:true,position:"top",fontSize:12,color:"#334155"}
            }]
        });
    });
}

function loadTable(){
    $.getJSON(api+"?act=log_list",function(list){
        $("#totalCount").text(list.length);
        if(list.length===0){
            $("#table-body").html(`<tr><td colspan="5"><div class="empty-state"><div class="empty-icon"><i class="fa fa-folder-open-o"></i></div><div>暂无今日告警数据</div></div></td></tr>`);
            return;
        }
        let html="";
        list.forEach(row=>{
            const typeText = row.alert_type == 1
                ? `<span class="status-tag fire"><i class="fa fa-bolt"></i>触发</span>`
                : `<span class="status-tag resolve"><i class="fa fa-check"></i>恢复</span>`;
            html += `<tr>
                <td>${typeText}</td>
                <td style="font-weight:500;color:var(--theme-main)">${row.alert_name || '-'}</td>
                <td style="font-family:Consolas,monospace;font-size:13px">${row.instance || '-'}</td>
                <td>${getSeverityTag(row.severity)}</td>
                <td style="color:#475569">${formatTime(row.receive_time)}</td>
            </tr>`;
        });
        $("#table-body").html(html);
    }).fail(()=>{
        $("#table-body").html(`<tr><td colspan="5"><div class="empty-state" style="color:#dc2626"><div class="empty-icon"><i class="fa fa-exclamation-circle"></i></div><div>接口数据加载失败，请检查后端服务</div></div></td></tr>`);
    });
}

function updateTime() {
    const now = new Date();
    const Y = now.getFullYear();
    const M = String(now.getMonth() + 1).padStart(2, '0');
    const D = String(now.getDate()).padStart(2, '0');
    const h = String(now.getHours()).padStart(2, '0');
    const m = String(now.getMinutes()).padStart(2, '0');
    const s = String(now.getSeconds()).padStart(2, '0');
    $("#updateTime").text(`${Y}-${M}-${D} ${h}:${m}:${s}`);
}

function loadAllData() {
    loadStats();
    loadChart();
    loadTable();
    loadActiveAlert();
    updateTime();
    if($("#diskPage").hasClass("active")) loadDiskData();
}

function exportCsv(){
    const mask = $("#exportMask");
    mask.css("display","flex");
    window.location.href = api + "?act=export_csv";
    setTimeout(()=>mask.hide(),5000);
}

function loadDiskData(){
    const tbody = $("#diskTableBody");
    tbody.html(`<tr><td colspan="4" class="empty-state"><div class="empty-icon"><i class="fa fa-spinner fa-spin"></i></div><div>正在拉取磁盘指标...</div></td></tr>`);
    $.getJSON("/api/df.php").done(ret=>{
        if(ret.code !== 0){
            tbody.html(`<tr><td colspan="4" class="empty-state" style="color:#dc2626">磁盘接口异常：${ret.msg}</td></tr>`);
            return;
        }
        diskSourceData = ret.list;
        if(diskSourceData.length === 0){
            tbody.html(`<tr><td colspan="4" class="empty-state">暂无磁盘指标数据</td></tr>`);
            return;
        }
        const ipSel = $("#ipSelect");
        ipSel.find("option:not([value='all'])").remove();
        const ipSet = new Set();
        diskSourceData.forEach(item=>ipSet.add(item.instance_ip));
        ipSet.forEach(ip=>ipSel.append(`<option value="${ip}">${ip}</option>`));
        currentDiskIp = "all";
        renderDiskTable("all");
    }).fail(()=>{
        tbody.html(`<tr><td colspan="4" class="empty-state" style="color:#dc2626">请求df.php接口失败，请检查服务</td></tr>`);
    })
}
function renderDiskTable(filterIp){
    currentDiskIp = filterIp;
    const tbody = $("#diskTableBody");
    tbody.html("");
    let showList = filterIp === "all" ? diskSourceData : diskSourceData.filter(i=>i.instance_ip === filterIp);
    if(showList.length === 0){
        tbody.html(`<tr><td colspan="4" class="empty-state">该实例下无目录数据</td></tr>`);
        return;
    }
    showList.forEach(row=>{
        tbody.append(`
            <tr>
                <td>${row.instance_ip}</td>
                <td>${row.username}</td>
                <td>${row.directory}</td>
                <td class="num-big">${row.size_gb}GB</td>
            </tr>
        `)
    })
}
$("#diskExportBtn").click(function(){
    let showList = currentDiskIp === "all" ? diskSourceData : diskSourceData.filter(i=>i.instance_ip === currentDiskIp);
    if(showList.length === 0){
        alert("无数据可导出");
        return;
    }
    let csv = "\uFEFF实例IP,用户名,目录路径,占用容量(GB)\n";
    showList.forEach(item=>{
        const line = [
            `"${item.instance_ip}"`,
            `"${item.username}"`,
            `"${item.directory}"`,
            `"${item.size_gb}GB"`
        ];
        csv += line.join(",") + "\n";
    })
    const blob = new Blob([csv], {type:"text/csv;charset=utf-8"});
    const url = URL.createObjectURL(blob);
    const a = document.createElement("a");
    a.href = url;
    a.download = "服务器磁盘容量_"+new Date().getTime()+".csv";
    a.click();
    URL.revokeObjectURL(url);
})
$("#ipSelect").change(function(){
    renderDiskTable($(this).val());
})

$("#pwdForm").submit(function(e){
    e.preventDefault();
    let data = $(this).serialize() + "&act=change_pwd";
    $.post(pwdApi,data,function(res){
        alert(res.msg);
        if(res.code == 0) location.href="logout.php";
    },"json");
})

$("#styleForm").submit(function(e){
    e.preventDefault();
    let data = $(this).serialize() + "&act=save_style";
    $.post(configApi,data,function(res){
        alert(res.msg);
        location.reload();
    },"json");
})

function loadLinkConfig(){
    $.post(configApi,"act=get_config",function(res){
        if(res.code!=0) return;
        linkData = res.data.sidebar_links;
        renderLinkList();
    },"json");
}
function renderLinkList(){
    let html = "";
    linkData.forEach((item,idx)=>{
        html += `
        <div class="link-item">
            <input class="form-input link-icon" value="${item.icon}" placeholder="fa图标名">
            <input class="form-input link-title" value="${item.title}" placeholder="显示名称">
            <input class="form-input link-url" value="${item.url}" placeholder="跳转地址">
            <select class="form-input link-target">
                <option value="_blank" ${item.target=="_blank"?"selected":""}>新标签打开</option>
                <option value="_self" ${item.target=="_self"?"selected":""}>当前页面打开</option>
            </select>
            <i class="fa fa-trash del-link" data-idx="${idx}"></i>
        </div>`;
    })
    $("#linkListBox").html(html);
}
$("#addLinkBtn").click(function(){
    linkData.push({icon:"fa-link",title:"新链接",url:"https://",target:"_blank"});
    renderLinkList();
})
$(document).on("click",".del-link",function(){
    let idx = $(this).data("idx");
    linkData.splice(idx,1);
    renderLinkList();
})
$("#saveLinkBtn").click(function(){
    let newList = [];
    $(".link-item").each(function(){
        newList.push({
            icon: $(this).find(".link-icon").val(),
            title: $(this).find(".link-title").val(),
            url: $(this).find(".link-url").val(),
            target: $(this).find(".link-target").val()
        })
    })
    $.post(configApi,{
        act:"save_sidebar_link",
        link_list:JSON.stringify(newList)
    },function(res){
        alert(res.msg);
        location.reload();
    },"json");
})

// ====================== 页面初始化 ======================
$(function() {
    loadAllData();
    setInterval(loadAllData, 60000);
    setInterval(updateTime, 1000);
    $("#logoutBtn").click(function(){
        location.href="logout.php";
    })
});
</script>
</body>
</html>
