// API 基础 URL
const API_BASE_URL = '/api';

// 全局状态
let state = {
    currentTimeRange: '1h', // 与UI默认值保持一致
    customStartTime: '',
    customEndTime: '',
    currentInterval: '10m' // 固定10分钟区间
}

// WebSocket连接
let ws = null;
let wsReconnectAttempts = 0;
const wsMaxReconnectAttempts = 5;
let wsReconnectDelay = 1000;

// 图表实例
const charts = {};

// 初始化应用
function initApp() {
    initCustomTimeRange();
    bindEvents();
    initPageSwitch();
    loadHomeData();
    initCharts();
    initWebSocket();
    
    // 设置定时刷新
    setInterval(loadMetrics, 30000);
    setInterval(loadServerCount, 30000);
}

// 初始化自定义时间范围
function initCustomTimeRange() {
    const now = new Date();
    // 默认显示过去24小时
    const twentyFourHoursAgo = new Date(now.getTime() - 24 * 60 * 60 * 1000);
    
    // 直接使用ISO字符串，包含完整的时区信息
    state.customStartTime = twentyFourHoursAgo.toISOString();
    state.customEndTime = now.toISOString();
}

// 页面切换
function initPageSwitch() {
    window.addEventListener('hashchange', switchPage);
    switchPage();
}

function switchPage() {
    const hash = window.location.hash;
    
    // 隐藏所有内容
    hideAllContent();
    
    // 显示对应内容
    if (hash === '#servers') {
        showContent('serversContent');
        loadAllServers();
    } else if (hash === '#devices') {
        showContent('devicesContent');
        loadDeviceManagementList();
    } else if (hash === '#serverMonitor' || hash.startsWith('#serverMonitor/')) {
        showContent('serverMonitorContent');
        
        // 提取设备ID
        let deviceId = '';
        if (hash.startsWith('#serverMonitor/')) {
            deviceId = hash.split('/')[1];
        }
        
        // 加载服务器信息
        if (deviceId) {
            loadServerInfo(deviceId);
        }
        
        loadMetrics();
    } else {
        showContent('homeContent');
        loadHomeData();
    }
}

function hideAllContent() {
    document.getElementById('homeContent').classList.add('hidden');
    document.getElementById('serversContent').classList.add('hidden');
    document.getElementById('serverMonitorContent').classList.add('hidden');
    document.getElementById('devicesContent').classList.add('hidden');
}

function showContent(contentId) {
    document.getElementById(contentId).classList.remove('hidden');
}

// 加载首页数据
async function loadHomeData() {
    try {
        // 加载业务视图数据
        await loadBusinessViewData();
        // 加载告警列表数据
        loadAlarmListData();
        // 加载服务器数量
        loadServerCount();
    } catch (error) {
        console.error('加载首页数据失败:', error);
    }
}

// 加载业务视图数据
async function loadBusinessViewData() {
    try {
        const response = await fetch(`${API_BASE_URL}/devices/`);
        const data = await response.json();
        let devices = data.devices || [];
        
        // 如果没有设备，使用模拟数据
        if (devices.length === 0) {
            devices = [
                { id: 'device-1', name: '服务器1', ip: '192.168.1.100' },
                { id: 'device-2', name: '服务器2', ip: '192.168.1.101' }
            ];
        }
        
        renderBusinessView(devices);
    } catch (error) {
        console.error('加载业务视图数据失败:', error);
        // 使用模拟数据
        const mockDevices = [
            { id: 'device-1', name: 'LIS', ip: '192.129.6.108', os: 'Linux', status: 'P1' },
            { id: 'device-2', name: '互联网医院', ip: '192.129.6.57', os: 'Linux', status: 'P3' },
            { id: 'device-3', name: 'HIS', ip: '192.129.51.21', os: 'Windows', status: 'P2' },
            { id: 'device-4', name: 'OA', ip: '192.129.6.42', os: 'Linux', status: 'P2' }
        ];
        renderBusinessView(mockDevices);
    }
}

// 渲染业务视图
function renderBusinessView(devices) {
    const tableBody = document.getElementById('businessViewTableBody');
    if (!tableBody) return;
    
    tableBody.innerHTML = '';
    
    devices.forEach(device => {
        const row = document.createElement('tr');
        row.className = 'hover:bg-gray-50 transition-colors';
        row.innerHTML = `
            <td class="px-6 py-4 whitespace-nowrap text-sm font-medium text-gray-900">${device.name}</td>
            <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">${device.ip}</td>
            <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">${device.os || '未知'}</td>
            <td class="px-6 py-4 whitespace-nowrap">
                <span class="px-2 inline-flex text-xs leading-5 font-semibold rounded-full bg-green-100 text-green-800">
                    正常
                </span>
            </td>
        `;
        tableBody.appendChild(row);
    });
}

// 加载告警列表数据
function loadAlarmListData() {
    // 模拟数据
    const alarmData = [
        { level: 'warning', message: 'CPU使用率超过阈值', device: '192.129.6.108', time: '2023-11-30 14:30:00' },
        { level: 'error', message: '内存使用率超过阈值', device: '192.129.6.57', time: '2023-11-30 14:28:00' },
        { level: 'warning', message: '磁盘使用率超过阈值', device: '192.129.51.21', time: '2023-11-30 14:25:00' },
        { level: 'info', message: '网络流量异常', device: '192.129.6.42', time: '2023-11-30 14:20:00' }
    ];
    
    renderAlarmList(alarmData);
}

// 渲染告警列表
function renderAlarmList(alarmData) {
    const alarmList = document.getElementById('alarmList');
    if (!alarmList) return;
    
    alarmList.innerHTML = '';
    
    alarmData.forEach(alarm => {
        const alarmItem = document.createElement('div');
        alarmItem.className = `p-4 bg-gray-50 rounded-lg border-l-4 ${getAlarmBorderColor(alarm.level)}`;
        
        alarmItem.innerHTML = `
            <div class="flex justify-between items-start">
                <div class="flex items-center gap-2">
                    <i class="fa fa-exclamation-circle ${getAlarmIconColor(alarm.level)}"></i>
                    <div>
                        <p class="text-sm font-medium text-gray-900">${alarm.message}</p>
                        <p class="text-xs text-gray-500">${alarm.device}</p>
                    </div>
                </div>
                <div class="text-xs text-gray-500">${alarm.time}</div>
            </div>
        `;
        
        alarmList.appendChild(alarmItem);
    });
}

// 获取告警样式
function getAlarmBorderColor(level) {
    switch(level) {
        case 'error': return 'border-red-500';
        case 'warning': return 'border-yellow-500';
        case 'info': return 'border-blue-500';
        default: return 'border-gray-500';
    }
}

function getAlarmIconColor(level) {
    switch(level) {
        case 'error': return 'text-red-500';
        case 'warning': return 'text-yellow-500';
        case 'info': return 'text-blue-500';
        default: return 'text-gray-500';
    }
}

// 加载服务器数量
async function loadServerCount() {
    try {
        const response = await fetch(`${API_BASE_URL}/devices/`);
        const data = await response.json();
        const count = data.devices ? data.devices.length : 0;
        
        const serverCountElement = document.getElementById('serverCount');
        if (serverCountElement) {
            serverCountElement.textContent = count;
        }
    } catch (error) {
        console.error('加载服务器数量失败:', error);
        const serverCountElement = document.getElementById('serverCount');
        if (serverCountElement) {
            serverCountElement.textContent = '2';
        }
    }
}

// 加载所有服务器
async function loadAllServers() {
    try {
        const response = await fetch(`${API_BASE_URL}/devices/`);
        const data = await response.json();
        const devices = data.devices || [];
        
        renderServersGrid(devices);
    } catch (error) {
        console.error('加载服务器列表失败:', error);
        // 模拟数据
        const mockDevices = [
            { id: 'device-1', name: '服务器1', ip: '192.168.1.100' },
            { id: 'device-2', name: '服务器2', ip: '192.168.1.101' }
        ];
        renderServersGrid(mockDevices);
    }
}

// 渲染服务器网格
function renderServersGrid(devices) {
    const serversGrid = document.getElementById('serversGrid');
    if (!serversGrid) return;
    
    serversGrid.innerHTML = '';
    
    devices.forEach(device => {
        const serverCard = createServerCard(device);
        serversGrid.appendChild(serverCard);
    });
}

// 创建服务器卡片
function createServerCard(device) {
    const card = document.createElement('div');
    card.className = 'bg-white rounded-xl shadow-md p-6 card-hover border border-gray-100 cursor-pointer';
    
    // 为卡片添加点击事件
    card.addEventListener('click', () => {
        goToServerMonitor(device.id);
    });
    
    card.innerHTML = `
        <div class="flex justify-between items-start mb-4">
            <div>
                <h3 class="text-xl font-bold text-gray-900">${device.name || device.id}</h3>
                <p class="text-sm text-gray-500">${device.ip || 'N/A'}</p>
            </div>
            <div class="px-3 py-1 bg-green-100 text-green-800 text-xs font-medium rounded-full">
                在线
            </div>
        </div>
        <div class="grid grid-cols-2 gap-4 mb-4">
            <div>
                <p class="text-xs text-gray-500">CPU使用率</p>
                <p class="text-lg font-semibold text-gray-900">0.0%</p>
            </div>
            <div>
                <p class="text-xs text-gray-500">内存使用率</p>
                <p class="text-lg font-semibold text-gray-900">0.0%</p>
            </div>
            <div>
                <p class="text-xs text-gray-500">磁盘使用率</p>
                <p class="text-lg font-semibold text-gray-900">0.0%</p>
            </div>
            <div>
                <p class="text-xs text-gray-500">网络流量</p>
                <p class="text-lg font-semibold text-gray-900">0.0 MB/s</p>
            </div>
        </div>
        <div class="flex justify-end">
            <button class="text-blue-600 hover:text-blue-800 text-sm font-medium">
                查看详情
            </button>
        </div>
    `;
    
    // 为"查看详情"按钮添加点击事件
    const viewDetailBtn = card.querySelector('button');
    viewDetailBtn.addEventListener('click', (e) => {
        e.stopPropagation(); // 阻止事件冒泡
        goToServerMonitor(device.id);
    });
    
    return card;
}

// 设备管理
async function loadDeviceManagementList() {
    try {
        const response = await fetch(`${API_BASE_URL}/devices/all`);
        if (!response.ok) {
            throw new Error('Failed to fetch devices');
        }
        
        const data = await response.json();
        const devices = data.devices || [];
        
        // 如果设备列表为空，使用模拟数据作为回退
        if (devices.length === 0) {
            console.warn('No devices available, using mock data');
            renderDeviceManagementList(getMockDevices());
            return;
        }
        
        // 处理设备数据，转换为所需格式
        const processedDevices = devices.map(device => ({
            id: device.id,
            name: device.name || device.id,
            ip: device.ip || 'N/A',
            status: device.status || 'unknown',
            created_at: device.created_at ? new Date(device.created_at * 1000).toLocaleString() : 'N/A',
            token: device.token || 'N/A'
        }));
        
        renderDeviceManagementList(processedDevices);
    } catch (error) {
        console.error('加载设备管理列表失败:', error);
        // 使用模拟数据作为回退
        renderDeviceManagementList(getMockDevices());
    }
}

// 获取模拟设备数据
function getMockDevices() {
    return [
        { id: 'device-1', name: '服务器1', ip: '192.168.1.100', status: 'active', created_at: new Date().toLocaleString(), token: 'mock-token-1' },
        { id: 'device-2', name: '服务器2', ip: '192.168.1.101', status: 'inactive', created_at: new Date().toLocaleString(), token: 'mock-token-2' },
        { id: 'device-3', name: '测试服务器', ip: '192.168.1.102', status: 'offline', created_at: new Date().toLocaleString(), token: 'mock-token-3' }
    ];
}

// 复制文本到剪贴板
function copyToClipboard(text) {
    navigator.clipboard.writeText(text).then(() => {
        // 可以添加一个提示，如"已复制"的临时消息
        showToast('复制成功');
    }).catch(err => {
        console.error('复制失败:', err);
        showToast('复制失败');
    });
}

// 显示临时提示消息
function showToast(message) {
    // 检查是否已存在toast元素
    let toast = document.getElementById('toast');
    if (!toast) {
        toast = document.createElement('div');
        toast.id = 'toast';
        toast.className = 'fixed bottom-4 right-4 bg-gray-800 text-white px-4 py-2 rounded opacity-0 transition-opacity duration-300 z-50';
        document.body.appendChild(toast);
    }
    
    toast.textContent = message;
    toast.style.opacity = '1';
    
    // 2秒后隐藏
    setTimeout(() => {
        toast.style.opacity = '0';
    }, 2000);
}

// 编辑设备
function editDevice(deviceId) {
    // 这里可以实现编辑设备的逻辑，比如打开模态框等
    console.log('编辑设备:', deviceId);
    // 可以添加模态框或跳转到编辑页面的逻辑
}

// 删除设备
function deleteDevice(deviceId) {
    if (confirm('确定要删除这个设备吗？')) {
        fetch(`${API_BASE_URL}/devices/${deviceId}`, {
            method: 'DELETE'
        }).then(response => {
            if (response.ok) {
                showToast('设备删除成功');
                loadDeviceManagementList(); // 重新加载设备列表
            } else {
                throw new Error('删除失败');
            }
        }).catch(err => {
            console.error('删除设备失败:', err);
            showToast('删除失败');
        });
    }
}

function renderDeviceManagementList(devices) {
    const tableBody = document.getElementById('deviceManagementTableBody');
    if (!tableBody) return;
    
    tableBody.innerHTML = '';
    
    devices.forEach(device => {
        const row = document.createElement('tr');
        row.className = 'hover:bg-gray-50 transition-colors';
        
        // 根据设备状态获取显示样式
        const getStatusStyle = (status) => {
            switch (status) {
                case 'active':
                    return 'bg-green-100 text-green-800';
                case 'inactive':
                    return 'bg-yellow-100 text-yellow-800';
                case 'offline':
                    return 'bg-red-100 text-red-800';
                default:
                    return 'bg-gray-100 text-gray-800';
            }
        };
        
        row.innerHTML = `
            <td class="px-6 py-4 whitespace-nowrap text-sm font-medium text-gray-900">${device.name}</td>
            <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">${device.id}</td>
            <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">${device.ip}</td>
            <td class="px-6 py-4 whitespace-nowrap">
                <div class="flex items-center">
                    <span class="text-sm text-gray-500 truncate max-w-[150px]">${device.token}</span>
                    <button class="ml-2 text-blue-500 hover:text-blue-700 text-sm" onclick="copyToClipboard('${device.token}')">
                        复制
                    </button>
                </div>
            </td>
            <td class="px-6 py-4 whitespace-nowrap">
                <span class="px-2 inline-flex text-xs leading-5 font-semibold rounded-full ${getStatusStyle(device.status)}">
                    ${device.status}
                </span>
            </td>
            <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">${device.created_at}</td>
            <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500">
                <button class="text-blue-600 hover:text-blue-800 mr-3" onclick="editDevice('${device.id}')">编辑</button>
                <button class="text-red-600 hover:text-red-800" onclick="deleteDevice('${device.id}')">删除</button>
            </td>
        `;
        
        tableBody.appendChild(row);
    });
}

// 初始化图表
function initCharts() {
    initAlarmTrendChart();
    initDetailedCharts();
}

// 初始化详细监控图表
function initDetailedCharts() {
    // 初始化CPU图表
    const cpuCtx = document.getElementById('cpuChart');
    if (cpuCtx && !charts.cpu) {
        charts.cpu = new Chart(cpuCtx, {
            type: 'line',
            data: {
                labels: [],
                datasets: [{
                    label: 'CPU使用率 (%)',
                    data: [],
                    borderColor: '#3b82f6',
                    backgroundColor: 'rgba(59, 130, 246, 0.1)',
                    borderWidth: 2,
                    fill: true,
                    tension: 0.7,
                    pointRadius: 0,
                    pointHoverRadius: 3
                }]
            },
            options: {
                responsive: true,
                maintainAspectRatio: false,
                plugins: {
                    legend: {
                        position: 'top'
                    },
                    tooltip: {
                        mode: 'index',
                        intersect: false
                    }
                },
                scales: {
                    y: {
                        beginAtZero: true,
                        max: 100,
                        ticks: {
                            callback: function(value) {
                                return value + '%';
                            }
                        }
                    }
                },
                // 启用缩放功能
                interaction: {
                    intersect: false,
                    mode: 'index'
                },
                // 允许显示空白区域
                spanGaps: true,
                // 配置缩放和拖拽
                plugins: {
                    legend: {
                        position: 'top'
                    },
                    tooltip: {
                        mode: 'index',
                        intersect: false
                    },
                    zoom: {
                        pan: {
                            enabled: true,
                            mode: 'x'
                        },
                        zoom: {
                            wheel: {
                                enabled: true,
                            },
                            pinch: {
                                enabled: true
                            },
                            mode: 'x',
                            onZoom: function({chart}) {
                                console.log(chart.getZoomLevel());
                            }
                        }
                    }
                }
            }
        });
    }
    
    // 初始化内存图表
    const memoryCtx = document.getElementById('memoryChart');
    if (memoryCtx && !charts.memory) {
        charts.memory = new Chart(memoryCtx, {
            type: 'line',
            data: {
                labels: [],
                datasets: [{
                    label: '内存使用率 (%)',
                    data: [],
                    borderColor: '#10b981',
                    backgroundColor: 'rgba(16, 185, 129, 0.1)',
                    borderWidth: 2,
                    fill: true,
                    tension: 0.7,
                    pointRadius: 0,
                    pointHoverRadius: 3
                }]
            },
            options: {
                responsive: true,
                maintainAspectRatio: false,
                interaction: {
                    intersect: false,
                    mode: 'index'
                },
                spanGaps: true,
                plugins: {
                    legend: {
                        position: 'top'
                    },
                    tooltip: {
                        mode: 'index',
                        intersect: false
                    },
                    zoom: {
                        pan: {
                            enabled: true,
                            mode: 'x'
                        },
                        zoom: {
                            wheel: {
                                enabled: true,
                            },
                            pinch: {
                                enabled: true
                            },
                            mode: 'x',
                            onZoom: function({chart}) {
                                console.log(chart.getZoomLevel());
                            }
                        }
                    }
                },
                scales: {
                    y: {
                        beginAtZero: true,
                        max: 100,
                        ticks: {
                            callback: function(value) {
                                return value + '%';
                            }
                        }
                    }
                }
            }
        });
    }
    
    // 初始化磁盘图表
    const diskCtx = document.getElementById('diskChart');
    if (diskCtx && !charts.disk) {
        charts.disk = new Chart(diskCtx, {
            type: 'line',
            data: {
                labels: [],
                datasets: []
            },
            options: {
                responsive: true,
                maintainAspectRatio: false,
                interaction: {
                    intersect: false,
                    mode: 'index'
                },
                spanGaps: true,
                plugins: {
                    legend: {
                        position: 'top'
                    },
                    tooltip: {
                        mode: 'index',
                        intersect: false
                    },
                    zoom: {
                        pan: {
                            enabled: true,
                            mode: 'x'
                        },
                        zoom: {
                            wheel: {
                                enabled: true,
                            },
                            pinch: {
                                enabled: true
                            },
                            mode: 'x',
                            onZoom: function({chart}) {
                                console.log(chart.getZoomLevel());
                            }
                        }
                    }
                },
                scales: {
                    y: {
                        beginAtZero: true,
                        max: 100,
                        ticks: {
                            callback: function(value) {
                                return value + '%';
                            }
                        }
                    }
                }
            }
        });
    }
    
    // 初始化网络流量图表（发送总和和接收总和）
    const networkCtx = document.getElementById('networkChart');
    if (networkCtx && !charts.network) {
        charts.network = new Chart(networkCtx, {
            type: 'line',
            data: {
                labels: [],
                datasets: [
                    {
                        label: '发送总和 (MB)',
                        data: [],
                        borderColor: '#f59e0b',
                        backgroundColor: 'rgba(245, 158, 11, 0.1)',
                        borderWidth: 2,
                        fill: true,
                        tension: 0.7,
                        pointRadius: 0,
                        pointHoverRadius: 3
                    },
                    {
                        label: '接收总和 (MB)',
                        data: [],
                        borderColor: '#10b981',
                        backgroundColor: 'rgba(16, 185, 129, 0.1)',
                        borderWidth: 2,
                        fill: true,
                        tension: 0.7,
                        pointRadius: 0,
                        pointHoverRadius: 3
                    }
                ]
            },
            options: {
                responsive: true,
                maintainAspectRatio: false,
                interaction: {
                    intersect: false,
                    mode: 'index'
                },
                spanGaps: true,
                plugins: {
                    legend: {
                        position: 'top'
                    },
                    tooltip: {
                        mode: 'index',
                        intersect: false
                    },
                    zoom: {
                        pan: {
                            enabled: true,
                            mode: 'x'
                        },
                        zoom: {
                            wheel: {
                                enabled: true,
                            },
                            pinch: {
                                enabled: true
                            },
                            mode: 'x',
                            onZoom: function({chart}) {
                                console.log(chart.getZoomLevel());
                            }
                        }
                    }
                },
                scales: {
                    y: {
                        beginAtZero: true,
                        ticks: {
                            callback: function(value) {
                                return value + ' MB';
                            }
                        }
                    }
                }
            }
        });
    }
    
    // 初始化网速趋势图表
    const speedCtx = document.getElementById('speedChart');
    if (speedCtx && !charts.speed) {
        charts.speed = new Chart(speedCtx, {
            type: 'line',
            data: {
                labels: [],
                datasets: [
                    {
                        label: '发送速率 (MB/s)',
                        data: [],
                        borderColor: '#f59e0b',
                        backgroundColor: 'rgba(245, 158, 11, 0.1)',
                        borderWidth: 2,
                        fill: true,
                        tension: 0.7,
                        pointRadius: 0,
                        pointHoverRadius: 3
                    },
                    {
                        label: '接收速率 (MB/s)',
                        data: [],
                        borderColor: '#10b981',
                        backgroundColor: 'rgba(16, 185, 129, 0.1)',
                        borderWidth: 2,
                        fill: true,
                        tension: 0.7,
                        pointRadius: 0,
                        pointHoverRadius: 3
                    }
                ]
            },
            options: {
                responsive: true,
                maintainAspectRatio: false,
                interaction: {
                    intersect: false,
                    mode: 'index'
                },
                spanGaps: true,
                plugins: {
                    legend: {
                        position: 'top'
                    },
                    tooltip: {
                        mode: 'index',
                        intersect: false
                    },
                    zoom: {
                        pan: {
                            enabled: true,
                            mode: 'x'
                        },
                        zoom: {
                            wheel: {
                                enabled: true,
                            },
                            pinch: {
                                enabled: true
                            },
                            mode: 'x',
                            onZoom: function({chart}) {
                                console.log(chart.getZoomLevel());
                            }
                        }
                    }
                },
                scales: {
                    y: {
                        beginAtZero: true,
                        ticks: {
                            callback: function(value) {
                                return value + ' MB/s';
                            }
                        }
                    }
                }
            }
        });
    }
}

// 初始化告警趋势图
function initAlarmTrendChart() {
    const ctx = document.getElementById('alarmTrendChart');
    if (!ctx) return;
    
    charts.alarmTrend = new Chart(ctx, {
        type: 'line',
        data: {
            labels: ['11-24', '11-25', '11-26', '11-27', '11-28', '11-29', '11-30'],
            datasets: [
                {
                    label: '报警',
                    data: [50, 60, 75, 80, 90, 100, 112],
                    borderColor: '#ef4444',
                    backgroundColor: 'rgba(239, 68, 68, 0.1)',
                    borderWidth: 2,
                    fill: true,
                    tension: 0.4
                },
                {
                    label: '提醒',
                    data: [20, 25, 30, 35, 38, 38, 38],
                    borderColor: '#f59e0b',
                    backgroundColor: 'rgba(245, 158, 11, 0.1)',
                    borderWidth: 2,
                    fill: true,
                    tension: 0.4
                }
            ]
        },
        options: {
            responsive: true,
            maintainAspectRatio: false,
            plugins: {
                legend: {
                    position: 'top'
                }
            },
            scales: {
                y: {
                    beginAtZero: true
                }
            }
        }
    });
}

// 格式化字节数，根据用户要求：只在MB和GB之间转换
function formatBytes(bytes, decimals = 2, isRate = false) {
    if (bytes === 0) {
        return isRate ? '0 MB/s' : '0 MB';
    }
    
    const mb = 1024 * 1024;
    const gb = mb * 1024;
    const dm = decimals < 0 ? 0 : decimals;
    
    // 对于速率（bytes/s）：默认显示MB/s，超过1024MB/s显示GB/s
    if (isRate) {
        if (bytes >= gb) {
            return parseFloat((bytes / gb).toFixed(dm)) + ' GB/s';
        } else {
            return parseFloat((bytes / mb).toFixed(dm)) + ' MB/s';
        }
    }
    // 对于流量（bytes）：默认显示MB，超过1024MB显示GB
    else {
        if (bytes >= gb) {
            return parseFloat((bytes / gb).toFixed(dm)) + ' GB';
        } else {
            return parseFloat((bytes / mb).toFixed(dm)) + ' MB';
        }
    }
}

// 获取单个指标数据
async function fetchMetric(metricType, aggregation = 'average') {
    // 构建查询参数
    const params = new URLSearchParams();
    
    // 设置时间范围参数
    if (state.customStartTime && state.customEndTime) {
        // 自定义时间范围
        params.append('start_time', state.customStartTime);
        params.append('end_time', state.customEndTime);
    } else {
        // 默认显示24小时的数据
        params.append('start_time', '-24h');
        params.append('end_time', 'now()');
    }
    
    // 设置聚合方式
    params.append('aggregation', aggregation);
    
    // 固定时间区间为10分钟
    params.append('interval', '10m');
    
    // 发送请求
    const response = await fetch(`${API_BASE_URL}/metrics/${metricType}?${params.toString()}`);
    
    if (!response.ok) {
        throw new Error(`Failed to fetch ${metricType} metrics`);
    }
    
    const data = await response.json();
    return data.data;
}

// 格式化时间，统一格式避免图表误解
function formatTime(timeStr) {
    // timeStr是ISO格式的UTC时间字符串，如"2025-12-02T01:53:19Z"
    const date = new Date(timeStr);
    
    // 格式化年、月、日（使用本地时间）
    const year = date.getFullYear();
    const month = String(date.getMonth() + 1).padStart(2, '0');
    const day = String(date.getDate()).padStart(2, '0');
    
    // 格式化时、分、秒（使用本地时间）
    const hours = String(date.getHours()).padStart(2, '0');
    const minutes = String(date.getMinutes()).padStart(2, '0');
    const seconds = String(date.getSeconds()).padStart(2, '0');
    
    // 总是显示完整的日期和时间，方便区分不同日期的数据
    return `${year}-${month}-${day} ${hours}:${minutes}:${seconds}`;
}



// 加载监控指标
async function loadMetrics() {
    try {
        // 并行加载所有指标
        const [cpuData, memoryData, diskData, networkSumData] = await Promise.all([
            fetchMetric('cpu'),
            fetchMetric('memory'),
            fetchMetric('disk'),
            fetchMetric('network')
        ]);
        
        // 更新状态卡片
        updateStatusCards({ cpu: cpuData, memory: memoryData, disk: diskData, network: networkSumData });
        
        // 更新图表
        updateCharts(cpuData, memoryData, diskData, networkSumData);
    } catch (error) {
        console.error('Failed to load metrics:', error);
        // 显示友好的错误提示
        showToast('加载监控数据失败，请稍后重试', 'error');
    }
}

// WebSocket初始化
function initWebSocket() {
    const protocol = window.location.protocol === 'https:' ? 'wss:' : 'ws:';
    const wsUrl = `${protocol}//${window.location.host}/api/ws`;
    
    ws = new WebSocket(wsUrl);
    
    ws.onopen = () => {
        console.log('WebSocket连接已打开');
        wsReconnectAttempts = 0;
        wsReconnectDelay = 1000;
    };
    
    ws.onmessage = (event) => {
        try {
            const message = JSON.parse(event.data);
            handleWebSocketMessage(message);
        } catch (error) {
            console.error('解析WebSocket消息失败:', error);
        }
    };
    
    ws.onclose = (event) => {
        console.log(`WebSocket连接已关闭: ${event.code} - ${event.reason}`);
        attemptReconnect();
    };
    
    ws.onerror = (error) => {
        console.error('WebSocket连接错误:', error);
    };
}

// 处理WebSocket消息
function handleWebSocketMessage(message) {
    if (message.type === 'metrics_update') {
        handleMetricsUpdate(message);
    }
}

// 加载服务器信息
async function loadServerInfo(deviceId) {
    try {
        const response = await fetch(`${API_BASE_URL}/devices/${deviceId}`);
        if (!response.ok) {
            throw new Error('Failed to fetch server info');
        }
        const deviceData = await response.json();
        
        // 更新服务器信息显示
        const serverInfoDisplay = document.getElementById('serverInfoDisplay');
        if (serverInfoDisplay) {
            serverInfoDisplay.innerHTML = `<p>服务器名称: <strong>${deviceData.name || deviceId}</strong> | IP地址: <strong>${deviceData.ip || '未知'}</strong></p>`;
        }
    } catch (error) {
        console.error('Failed to load server info:', error);
        // 使用模拟数据
        const serverInfoDisplay = document.getElementById('serverInfoDisplay');
        if (serverInfoDisplay) {
            serverInfoDisplay.innerHTML = `<p>服务器名称: <strong>服务器 ${deviceId}</strong> | IP地址: <strong>192.168.1.${deviceId}</strong></p>`;
        }
    }
}

// 处理指标更新
function handleMetricsUpdate(message) {
    const { device_id, metrics } = message;
    // 直接更新，不再检查device_id
    updateStatusCards(metrics);
    // 立即刷新数据以确保图表也更新
    setTimeout(() => loadMetrics(), 500);
}

// 更新状态卡片
function updateStatusCards(metrics) {
    // 更新CPU状态卡片
    if (metrics.cpu) {
        if (Array.isArray(metrics.cpu) && metrics.cpu.length > 0) {
            const latestCPU = metrics.cpu[metrics.cpu.length - 1].value;
            const cpuElement = document.getElementById('cpuValue');
            if (cpuElement) {
                cpuElement.textContent = `${latestCPU.toFixed(1)}%`;
            }
        } else if (typeof metrics.cpu === 'number') {
            const cpuElement = document.getElementById('cpuValue');
            if (cpuElement) {
                cpuElement.textContent = `${metrics.cpu.toFixed(1)}%`;
            }
        }
    }
    
    // 更新内存状态卡片
    if (metrics.memory) {
        if (Array.isArray(metrics.memory) && metrics.memory.length > 0) {
            const latestMemory = metrics.memory[metrics.memory.length - 1].value;
            const memoryElement = document.getElementById('memoryValue');
            if (memoryElement) {
                memoryElement.textContent = `${latestMemory.toFixed(1)}%`;
            }
        } else if (typeof metrics.memory === 'number') {
            const memoryElement = document.getElementById('memoryValue');
            if (memoryElement) {
                memoryElement.textContent = `${metrics.memory.toFixed(1)}%`;
            }
        }
    }
    
    // 更新磁盘状态卡片
    if (metrics.disk) {
        const diskElement = document.getElementById('diskValue');
        if (diskElement) {
            if (typeof metrics.disk === 'object' && metrics.disk !== null && !Array.isArray(metrics.disk)) {
                // 计算所有挂载点的平均使用率
                let totalUsage = 0;
                let mountpointCount = 0;
                
                for (const mountpoint in metrics.disk) {
                    const data = metrics.disk[mountpoint];
                    if (data && Array.isArray(data) && data.length > 0) {
                        const latestValue = data[data.length - 1].value;
                        totalUsage += latestValue;
                        mountpointCount++;
                    } else if (typeof data === 'number') {
                        totalUsage += data;
                        mountpointCount++;
                    }
                }
                
                if (mountpointCount > 0) {
                    const averageUsage = totalUsage / mountpointCount;
                    diskElement.textContent = `${averageUsage.toFixed(1)}%`;
                }
            } else if (Array.isArray(metrics.disk) && metrics.disk.length > 0) {
                const latestDisk = metrics.disk[metrics.disk.length - 1].value;
                diskElement.textContent = `${latestDisk.toFixed(1)}%`;
            } else if (typeof metrics.disk === 'number') {
                diskElement.textContent = `${metrics.disk.toFixed(1)}%`;
            }
        }
    }
    
    // 更新网络状态卡片
    if (metrics.network) {
        const networkValueElement = document.getElementById('networkValue');
        const networkSentElement = document.getElementById('networkSent');
        const networkReceivedElement = document.getElementById('networkReceived');
        
        // 处理不同格式的网络数据
        if (metrics.network.sent && metrics.network.received) {
            // 处理数组格式的数据
            if (Array.isArray(metrics.network.sent) && metrics.network.sent.length > 0 && 
                Array.isArray(metrics.network.received) && metrics.network.received.length > 0) {
                
                const latestSent = metrics.network.sent[metrics.network.sent.length - 1].value;
                const latestReceived = metrics.network.received[metrics.network.received.length - 1].value;
                
                if (networkValueElement) {
                    // 显示较大的值
                    const maxValue = Math.max(latestSent, latestReceived);
                    networkValueElement.textContent = formatBytes(maxValue, 2, true); // 显示速率
                }
                
                if (networkSentElement) {
                    networkSentElement.textContent = formatBytes(latestSent, 2, true);
                }
                
                if (networkReceivedElement) {
                    networkReceivedElement.textContent = formatBytes(latestReceived, 2, true);
                }
            } 
            // 处理数值格式的数据
            else if (typeof metrics.network.sent === 'number' && typeof metrics.network.received === 'number') {
                if (networkValueElement) {
                    const maxValue = Math.max(metrics.network.sent, metrics.network.received);
                    networkValueElement.textContent = formatBytes(maxValue, 2, true);
                }
                
                if (networkSentElement) {
                    networkSentElement.textContent = formatBytes(metrics.network.sent, 2, true);
                }
                
                if (networkReceivedElement) {
                    networkReceivedElement.textContent = formatBytes(metrics.network.received, 2, true);
                }
            }
        } else if (typeof metrics.network === 'object' && 
                  metrics.network.bytes_sent !== undefined && 
                  metrics.network.bytes_received !== undefined) {
            // WebSocket消息格式
            if (networkValueElement) {
                const maxValue = Math.max(metrics.network.bytes_sent, metrics.network.bytes_received);
                networkValueElement.textContent = formatBytes(maxValue, 2, true);
            }
            
            if (networkSentElement) {
                networkSentElement.textContent = formatBytes(metrics.network.bytes_sent, 2, true);
            }
            
            if (networkReceivedElement) {
                networkReceivedElement.textContent = formatBytes(metrics.network.bytes_received, 2, true);
            }
        }
    }
}

// 更新图表数据
function updateCharts(cpuData, memoryData, diskData, networkData) {
    // 数据点排序函数
    const sortDataByTime = (data) => {
        return [...data].sort((a, b) => {
            return new Date(a.time) - new Date(b.time);
        });
    };
    
    // 计算固定份数X轴数据
    const getFixedPointsData = (data) => {
        if (!Array.isArray(data) || data.length === 0) {
            return [];
        }
        
        // 根据时间范围计算需要的份数（每份10分钟）
        let expectedPoints = 6; // 默认1小时，6份
        let timeRange = state.currentTimeRange || '1h';
        
        // 如果使用了自定义时间，检查是否是24小时范围
        if (state.customStartTime && state.customEndTime) {
            const startTime = new Date(state.customStartTime);
            const endTime = new Date(state.customEndTime);
            const durationHours = (endTime - startTime) / (1000 * 60 * 60);
            
            // 根据实际时长设置预期点数
            if (durationHours <= 0.5) {
                timeRange = '30m';
            } else if (durationHours <= 1) {
                timeRange = '1h';
            } else if (durationHours <= 2) {
                timeRange = '2h';
            } else if (durationHours <= 6) {
                timeRange = '6h';
            } else if (durationHours <= 12) {
                timeRange = '12h';
            } else {
                timeRange = '24h';
            }
        }
        
        switch(timeRange) {
            case '30m':
                expectedPoints = 3; // 30分钟，3份
                break;
            case '1h':
                expectedPoints = 6; // 1小时，6份
                break;
            case '2h':
                expectedPoints = 12; // 2小时，12份
                break;
            case '6h':
                expectedPoints = 36; // 6小时，36份
                break;
            case '12h':
                expectedPoints = 72; // 12小时，72份
                break;
            case '24h':
                expectedPoints = 144; // 24小时，144份
                break;
        }
        

        
        // 排序数据
        const sortedData = sortDataByTime(data);
        
        // 如果数据点足够，直接返回
        if (sortedData.length <= expectedPoints) {
            return sortedData;
        }
        
        // 计算采样步长
        const step = Math.ceil(sortedData.length / expectedPoints);
        const sampled = [];
        
        // 采样数据，确保得到期望的份数
        for (let i = 0; i < sortedData.length; i += step) {
            sampled.push(sortedData[i]);
            if (sampled.length >= expectedPoints) {
                break;
            }
        }
        
        // 确保包含最后一个数据点
        if (sampled.length < expectedPoints && sortedData.length > 0) {
            // 如果采样点不够，从末尾补充
            const remaining = expectedPoints - sampled.length;
            for (let i = 1; i <= remaining; i++) {
                const index = Math.max(0, sortedData.length - i);
                if (!sampled.some(item => item.time === sortedData[index].time)) {
                    sampled.push(sortedData[index]);
                }
            }
        }
        
        // 再次排序，确保时间顺序
        return sortDataByTime(sampled);
    };
    
    // 更新CPU图表
    if (cpuData && Array.isArray(cpuData) && cpuData.length > 0 && charts.cpu) {
        const fixedData = getFixedPointsData(cpuData);
        charts.cpu.data.datasets[0].data = fixedData.map(item => ({
            x: formatTime(item.time),
            y: item.value
        }));
        charts.cpu.update();
    }
    
    // 更新内存图表
    if (memoryData && Array.isArray(memoryData) && memoryData.length > 0 && charts.memory) {
        const fixedData = getFixedPointsData(memoryData);
        charts.memory.data.datasets[0].data = fixedData.map(item => ({
            x: formatTime(item.time),
            y: item.value
        }));
        charts.memory.update();
    }
    
    // 更新磁盘图表，支持多个挂载点
    if (diskData && charts.disk) {
        // 定义不同的颜色，用于区分不同的挂载点
        const colors = [
            { border: '#f59e0b', background: 'rgba(245, 158, 11, 0.1)' }, // 黄色
            { border: '#ef4444', background: 'rgba(239, 68, 68, 0.1)' }, // 红色
            { border: '#10b981', background: 'rgba(16, 185, 129, 0.1)' }, // 绿色
            { border: '#3b82f6', background: 'rgba(59, 130, 246, 0.1)' }, // 蓝色
            { border: '#8b5cf6', background: 'rgba(139, 92, 246, 0.1)' }, // 紫色
            { border: '#ec4899', background: 'rgba(236, 72, 153, 0.1)' }, // 粉色
        ];
        
        // 清空现有的数据集
        charts.disk.data.datasets = [];
        
        // 为每个挂载点创建独立的数据集
        let colorIndex = 0;
        if (typeof diskData === 'object' && diskData !== null && !Array.isArray(diskData)) {
            // 处理按挂载点分组的数据
            for (const [mountpoint, data] of Object.entries(diskData)) {
                if (data && Array.isArray(data) && data.length > 0) {
                    // 获取颜色
                    const color = colors[colorIndex % colors.length];
                    colorIndex++;
                    
                    // 排序数据
                    const sortedData = sortDataByTime(data);
                    // 使用固定份数X轴数据计算
                    const fixedPointsData = getFixedPointsData(sortedData);
                    
                    // 创建数据集
                    const dataset = {
                        label: `磁盘使用率 (${mountpoint})`,
                        data: fixedPointsData.map(item => ({
                            x: formatTime(item.time),
                            y: item.value
                        })),
                        borderColor: color.border,
                        backgroundColor: color.background,
                        borderWidth: 2,
                        fill: true,
                        tension: 0.7,
                        pointRadius: 0,
                        pointHoverRadius: 3,
                    };
                    
                    // 添加数据集
                    charts.disk.data.datasets.push(dataset);
                }
            }
        } else if (Array.isArray(diskData) && diskData.length > 0) {
            // 处理单一磁盘数据
            const sortedData = sortDataByTime(diskData);
            // 使用固定份数X轴数据计算
            const fixedPointsData = getFixedPointsData(sortedData);
            const dataset = {
                        label: '磁盘使用率',
                        data: fixedPointsData.map(item => ({
                            x: formatTime(item.time),
                            y: item.value
                        })),
                        borderColor: '#f59e0b',
                        backgroundColor: 'rgba(245, 158, 11, 0.1)',
                        borderWidth: 2,
                        fill: true,
                        tension: 0.7,
                        pointRadius: 0,
                        pointHoverRadius: 3,
                    };
            charts.disk.data.datasets.push(dataset);
        }
        
        // 更新图表
        charts.disk.update();
    }
    
    // 更新网络流量趋势图表（发送总和和接收总和）
    if (networkData && networkData.sent && networkData.received && charts.network) {
        // 计算发送总和（时间段内的累积值）
        if (Array.isArray(networkData.sent) && networkData.sent.length > 0) {
            // 排序发送数据
            const sortedSent = sortDataByTime(networkData.sent);
            
            // 计算累积发送总和（MB）
            let cumulativeSent = 0;
            const sentSumData = sortedSent.map(item => {
                // 转换为MB并累积
                const mbValue = item.value / (1024 * 1024);
                cumulativeSent += mbValue;
                return {
                    time: item.time,
                    value: cumulativeSent
                };
            });
            
            // 使用固定份数X轴数据计算
            const fixedPointsSentSum = getFixedPointsData(sentSumData);
            charts.network.data.datasets[0].data = fixedPointsSentSum.map(item => ({
                x: formatTime(item.time),
                y: item.value
            }));
        }
        
        // 计算接收总和（时间段内的累积值）
        if (Array.isArray(networkData.received) && networkData.received.length > 0) {
            // 排序接收数据
            const sortedReceived = sortDataByTime(networkData.received);
            
            // 计算累积接收总和（MB）
            let cumulativeReceived = 0;
            const receivedSumData = sortedReceived.map(item => {
                // 转换为MB并累积
                const mbValue = item.value / (1024 * 1024);
                cumulativeReceived += mbValue;
                return {
                    time: item.time,
                    value: cumulativeReceived
                };
            });
            
            // 使用固定份数X轴数据计算
            const fixedPointsReceivedSum = getFixedPointsData(receivedSumData);
            charts.network.data.datasets[1].data = fixedPointsReceivedSum.map(item => ({
                x: formatTime(item.time),
                y: item.value
            }));
        }
        
        charts.network.update();
    }
    
    // 更新网速趋势图表
    if (networkData && networkData.sent && networkData.received && charts.speed) {
        // 更新发送流量
        if (Array.isArray(networkData.sent) && networkData.sent.length > 0) {
            const sortedData = sortDataByTime(networkData.sent);
            // 使用固定份数X轴数据计算
            const fixedPointsData = getFixedPointsData(sortedData);
            charts.speed.data.datasets[0].data = fixedPointsData.map(item => ({
                x: formatTime(item.time),
                y: item.value / (1024 * 1024) // 转换为MB/s
            }));
        }
        
        // 更新接收流量
        if (Array.isArray(networkData.received) && networkData.received.length > 0) {
            const sortedData = sortDataByTime(networkData.received);
            // 使用固定份数X轴数据计算
            const fixedPointsData = getFixedPointsData(sortedData);
            charts.speed.data.datasets[1].data = fixedPointsData.map(item => ({
                x: formatTime(item.time),
                y: item.value / (1024 * 1024) // 转换为MB/s
            }));
        }
        
        charts.speed.update();
    }
    
    // 初始化图表（如果尚未初始化）
    initDetailedCharts();
}

// 尝试重连WebSocket
function attemptReconnect() {
    if (wsReconnectAttempts < wsMaxReconnectAttempts) {
        wsReconnectAttempts++;
        wsReconnectDelay *= 2;
        setTimeout(() => {
            console.log(`尝试重新连接WebSocket (${wsReconnectAttempts}/${wsMaxReconnectAttempts})`);
            initWebSocket();
        }, wsReconnectDelay);
    }
}

// 打开模态框
function openModal(isEdit = false, deviceData = null) {
    const modal = document.getElementById('deviceModal');
    const modalContent = document.getElementById('modalContent');
    const modalTitle = document.getElementById('modalTitle');
    const deviceId = document.getElementById('deviceId');
    const deviceName = document.getElementById('deviceName');
    const deviceIp = document.getElementById('deviceIp');
    const deviceStatus = document.getElementById('deviceStatus');
    
    // 重置表单
    document.getElementById('deviceForm').reset();
    
    // 设置模态框标题和数据
    if (isEdit && deviceData) {
        modalTitle.textContent = '编辑设备';
        deviceId.value = deviceData.id;
        deviceName.value = deviceData.name || '';
        deviceIp.value = deviceData.ip || '';
        deviceStatus.value = deviceData.status || 'inactive';
    } else {
        modalTitle.textContent = '添加设备';
        deviceId.value = '';
    }
    
    // 显示模态框并添加动画
    modal.classList.remove('hidden');
    // 触发重排后再添加动画类
    setTimeout(() => {
        modalContent.classList.remove('scale-95', 'opacity-0');
        modalContent.classList.add('scale-100', 'opacity-100');
    }, 10);
}

// 关闭模态框
function closeModal() {
    const modal = document.getElementById('deviceModal');
    const modalContent = document.getElementById('modalContent');
    
    // 先应用离开动画
    modalContent.classList.remove('scale-100', 'opacity-100');
    modalContent.classList.add('scale-95', 'opacity-0');
    
    // 动画结束后隐藏模态框
    setTimeout(() => {
        modal.classList.add('hidden');
    }, 300);
}

// 编辑设备
function editDevice(deviceId) {
    // 查找对应的设备数据
    const deviceData = state.deviceList.find(device => device.id === deviceId);
    if (deviceData) {
        openModal(true, deviceData);
    } else {
        showToast('未找到设备数据', 'error');
    }
}

// 处理设备表单提交
async function handleDeviceFormSubmit(event) {
    event.preventDefault();
    
    const deviceId = document.getElementById('deviceId').value;
    const deviceName = document.getElementById('deviceName').value;
    const deviceIp = document.getElementById('deviceIp').value;
    const deviceStatus = document.getElementById('deviceStatus').value;
    
    // 生成或使用现有ID
    let idToUse = deviceId;
    if (!idToUse) {
        // 为新设备生成ID
        idToUse = 'device-' + Date.now();
    }
    
    // 获取当前时间戳
    const timestamp = Math.floor(Date.now() / 1000);
    
    // 为新设备生成token
    let token = '';
    if (!deviceId) {
        token = 'token-' + Math.random().toString(36).substring(2, 15);
    }
    
    // 构建完整的设备数据对象，包含所有必需字段
    const deviceData = {
        id: idToUse,
        name: deviceName,
        ip: deviceIp,
        status: deviceStatus,
        token: token,  // 新设备生成token，编辑时不提供（由后端保持原值）
        created_at: timestamp,  // 新设备的创建时间
        updated_at: timestamp   // 更新时间
    };
    
    try {
        let url = `${API_BASE_URL}/devices/`;
        let method = 'POST';
        
        // 如果是编辑操作，修改URL和方法
        if (deviceId) {
            url = `${API_BASE_URL}/devices/${deviceId}`;
            method = 'PUT';
        }
        
        // 发送请求
        const response = await fetch(url, {
            method: method,
            headers: {
                'Content-Type': 'application/json'
            },
            body: JSON.stringify(deviceData)
        });
        
        if (!response.ok) {
            throw new Error(`HTTP error! status: ${response.status}`);
        }
        
        const result = await response.json();
        
        // 显示成功提示
        showToast(deviceId ? '设备更新成功' : '设备添加成功', 'success');
        
        // 关闭模态框
        closeModal();
        
        // 重新加载设备列表
        await loadDeviceManagementList();
        
    } catch (error) {
        console.error('保存设备失败:', error);
        showToast(deviceId ? '设备更新失败' : '设备添加失败', 'error');
    }
}

// 绑定事件
function bindEvents() {
    // 添加设备按钮事件
    const addDeviceBtn = document.getElementById('addDeviceBtn');
    if (addDeviceBtn) {
        addDeviceBtn.addEventListener('click', () => {
            openModal(false);
        });
    }
    
    // 关闭模态框按钮
    const closeModalBtn = document.getElementById('closeModalBtn');
    if (closeModalBtn) {
        closeModalBtn.addEventListener('click', closeModal);
    }
    
    // 取消按钮
    const cancelModalBtn = document.getElementById('cancelModalBtn');
    if (cancelModalBtn) {
        cancelModalBtn.addEventListener('click', closeModal);
    }
    
    // 设备表单提交
    const deviceForm = document.getElementById('deviceForm');
    if (deviceForm) {
        deviceForm.addEventListener('submit', handleDeviceFormSubmit);
    }
    
    // 点击模态框背景关闭
    const modal = document.getElementById('deviceModal');
    if (modal) {
        modal.addEventListener('click', (event) => {
            if (event.target === modal) {
                closeModal();
            }
        });
    }
    
    // 自定义时间查询事件
    const customTimeQuery = document.getElementById('customTimeQuery');
    if (customTimeQuery) {
        customTimeQuery.addEventListener('click', () => {
            const startTimeInput = document.getElementById('customStartTime');
            const endTimeInput = document.getElementById('customEndTime');
            
            if (startTimeInput && endTimeInput) {
                // 获取本地时间
                const localStartTime = new Date(startTimeInput.value);
                const localEndTime = new Date(endTimeInput.value);
                
                // 转换为ISO字符串（UTC时间）
                state.customStartTime = localStartTime.toISOString();
                state.customEndTime = localEndTime.toISOString();
                // 清空当前时间范围状态，只使用自定义时间
                state.currentTimeRange = '';
                // 重新加载数据
                loadMetrics();
            }
        });
    }
    
    // 初始化自定义时间输入框
    const now = new Date();
    const startTimeInput = document.getElementById('customStartTime');
    const endTimeInput = document.getElementById('customEndTime');
    if (startTimeInput && endTimeInput) {
        // 默认显示过去24小时
        const twentyFourHoursAgo = new Date(now.getTime() - 24 * 60 * 60 * 1000);
        
        // 显示本地时间格式，YYYY-MM-DDTHH:MM
        startTimeInput.value = twentyFourHoursAgo.toISOString().slice(0, 16);
        endTimeInput.value = now.toISOString().slice(0, 16);
    }
    
    // 缩放控件事件处理
    const zoomOutBtn = document.getElementById('zoomOutBtn');
    const zoomInBtn = document.getElementById('zoomInBtn');
    const resetZoomBtn = document.getElementById('resetZoomBtn');
    const currentTimeRangeDisplay = document.getElementById('currentTimeRangeDisplay');
    
    if (zoomOutBtn && zoomInBtn && currentTimeRangeDisplay) {
        // 时间范围选项列表，用于缩放
        const timeRanges = ['30m', '1h', '2h', '6h', '12h', '24h'];
        
        // 更新当前时间范围显示
        const updateTimeRangeDisplay = () => {
            switch(state.currentTimeRange) {
                case '30m':
                    currentTimeRangeDisplay.textContent = '过去30分钟';
                    break;
                case '1h':
                    currentTimeRangeDisplay.textContent = '过去1小时';
                    break;
                case '2h':
                    currentTimeRangeDisplay.textContent = '过去2小时';
                    break;
                case '6h':
                    currentTimeRangeDisplay.textContent = '过去6小时';
                    break;
                case '12h':
                    currentTimeRangeDisplay.textContent = '过去12小时';
                    break;
                case '24h':
                    currentTimeRangeDisplay.textContent = '过去24小时';
                    break;
                default:
                    currentTimeRangeDisplay.textContent = '自定义时间范围';
            }
        };
        
        // 初始化显示
        updateTimeRangeDisplay();
        
        // 放大事件
        zoomInBtn.addEventListener('click', () => {
            // 只在使用预设时间范围时生效
            if (state.customStartTime && state.customEndTime) {
                // 使用自定义时间时，先清除自定义时间
                state.customStartTime = '';
                state.customEndTime = '';
                state.currentTimeRange = '1h';
            } else {
                // 查找当前时间范围在列表中的索引
                const currentIndex = timeRanges.indexOf(state.currentTimeRange);
                if (currentIndex > 0) {
                    // 放大：使用更小的时间范围
                    state.currentTimeRange = timeRanges[currentIndex - 1];
                }
            }
            
            // 更新显示
            updateTimeRangeDisplay();
            // 重新加载数据
            loadMetrics();
        });
        
        // 缩小事件
        zoomOutBtn.addEventListener('click', () => {
            // 只在使用预设时间范围时生效
            if (state.customStartTime && state.customEndTime) {
                // 使用自定义时间时，先清除自定义时间
                state.customStartTime = '';
                state.customEndTime = '';
                state.currentTimeRange = '1h';
            } else {
                // 查找当前时间范围在列表中的索引
                const currentIndex = timeRanges.indexOf(state.currentTimeRange);
                if (currentIndex < timeRanges.length - 1) {
                    // 缩小：使用更大的时间范围
                    state.currentTimeRange = timeRanges[currentIndex + 1];
                }
            }
            
            // 更新显示
            updateTimeRangeDisplay();
            // 重新加载数据
            loadMetrics();
        });
    }
    
    // 重置缩放按钮事件处理
    if (resetZoomBtn) {
        resetZoomBtn.addEventListener('click', () => {
            // 重置所有图表的缩放
            Object.values(charts).forEach(chart => {
                if (chart && typeof chart.resetZoom === 'function') {
                    chart.resetZoom();
                }
            });
        });
    }
}

// 工具函数
function showContent(contentId) {
    const element = document.getElementById(contentId);
    if (element) {
        element.classList.remove('hidden');
    }
}

// 跳转到服务器监控详情页面
function goToServerMonitor(deviceId) {
    state.currentDeviceID = deviceId;
    window.location.hash = `#serverMonitor/${deviceId}`;
    // 加载选中设备的监控数据
    setTimeout(() => {
        loadMetrics();
    }, 100);
}


// 初始化图表选项卡
function initChartTabs() {
    const tabs = document.querySelectorAll('.chart-tab');
    if (tabs.length === 0) return;
    
    tabs.forEach(tab => {
        tab.addEventListener('click', () => {
            // 移除所有选项卡的激活状态
            tabs.forEach(t => {
                t.classList.remove('active', 'text-blue-600', 'border-blue-600');
                t.classList.add('text-gray-600', 'border-transparent');
            });
            
            // 添加当前选项卡的激活状态
            tab.classList.add('active', 'text-blue-600', 'border-blue-600');
            tab.classList.remove('text-gray-600', 'border-transparent');
            
            // 隐藏所有图表容器
            const tabId = tab.dataset.tab;
            const chartContainers = document.querySelectorAll('.chart-container');
            chartContainers.forEach(container => {
                container.classList.add('hidden');
            });
            
            // 显示当前选中的图表容器
            const activeContainer = document.getElementById(`${tabId}ChartContainer`);
            if (activeContainer) {
                activeContainer.classList.remove('hidden');
            }
        });
    });
}

// 页面加载完成后初始化
window.addEventListener('DOMContentLoaded', () => {
    initApp();
    
    // 初始化图表选项卡
    initChartTabs();
    
    // 添加路由监听，处理hash变化
    window.addEventListener('hashchange', handleHashChange);
    
    // 初始检查hash
    handleHashChange();
});

// 处理hash变化
function handleHashChange() {
    const hash = window.location.hash;
    if (hash === '#serverMonitor' || hash.startsWith('#serverMonitor/')) {
        // 延迟一下，确保DOM已经渲染完成
        setTimeout(() => {
            loadMetrics();
        }, 300);
    }
}