mysoft
/
license-admin


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>License 管理平台</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            padding: 20px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
        }

        .header {
            background: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            margin-bottom: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .header h1 {
            color: #333;
            font-size: 28px;
        }

        .btn {
            padding: 10px 20px;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 14px;
            transition: all 0.3s;
            font-weight: 500;
        }

        .btn-primary {
            background: #667eea;
            color: white;
        }

        .btn-primary:hover {
            background: #5568d3;
            transform: translateY(-2px);
            box-shadow: 0 4px 8px rgba(102, 126, 234, 0.3);
        }

        .btn-danger {
            background: #ef4444;
            color: white;
        }

        .btn-danger:hover {
            background: #dc2626;
        }

        .btn-secondary {
            background: #6b7280;
            color: white;
        }

        .btn-secondary:hover {
            background: #4b5563;
        }

        .card {
            background: white;
            border-radius: 10px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            padding: 30px;
            margin-bottom: 20px;
        }

        .table-container {
            overflow-x: auto;
        }

        table {
            width: 100%;
            border-collapse: collapse;
        }

        th, td {
            padding: 12px;
            text-align: left;
            border-bottom: 1px solid #e5e7eb;
        }

        th {
            background: #f9fafb;
            font-weight: 600;
            color: #374151;
        }

        tr:hover {
            background: #f9fafb;
        }

        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 500;
        }

        .badge-success {
            background: #d1fae5;
            color: #065f46;
        }

        .badge-warning {
            background: #fef3c7;
            color: #92400e;
        }

        .modal {
            display: none;
            position: fixed;
            z-index: 1000;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            animation: fadeIn 0.3s;
        }

        .modal.show {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        .modal-content {
            background: white;
            border-radius: 10px;
            padding: 30px;
            width: 90%;
            max-width: 500px;
            animation: slideDown 0.3s;
        }

        @keyframes slideDown {
            from {
                transform: translateY(-50px);
                opacity: 0;
            }
            to {
                transform: translateY(0);
                opacity: 1;
            }
        }

        .modal-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
        }

        .modal-header h2 {
            color: #333;
            font-size: 24px;
        }

        .close {
            font-size: 28px;
            font-weight: bold;
            color: #999;
            cursor: pointer;
            border: none;
            background: none;
        }

        .close:hover {
            color: #333;
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            color: #374151;
            font-weight: 500;
        }

        .form-group input {
            width: 100%;
            padding: 10px;
            border: 1px solid #d1d5db;
            border-radius: 5px;
            font-size: 14px;
        }

        .form-group input:focus {
            outline: none;
            border-color: #667eea;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }

        .form-actions {
            display: flex;
            gap: 10px;
            justify-content: flex-end;
            margin-top: 20px;
        }

        .pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 10px;
            margin-top: 20px;
        }

        .pagination button {
            padding: 8px 16px;
            border: 1px solid #d1d5db;
            background: white;
            border-radius: 5px;
            cursor: pointer;
        }

        .pagination button:hover:not(:disabled) {
            background: #f9fafb;
        }

        .pagination button:disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }

        .pagination .page-info {
            color: #6b7280;
        }

        .loading {
            text-align: center;
            padding: 40px;
            color: #6b7280;
        }

        .empty-state {
            text-align: center;
            padding: 60px 20px;
            color: #6b7280;
        }

        .empty-state svg {
            width: 100px;
            height: 100px;
            margin-bottom: 20px;
            opacity: 0.5;
        }

        .device-list {
            font-size: 12px;
            color: #6b7280;
            max-width: 200px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .device-detail-cell {
            cursor: pointer;
            color: #667eea;
            font-size: 14px;
            padding: 8px 12px;
            border-radius: 5px;
            transition: all 0.2s;
            max-width: 300px;
        }

        .device-detail-cell:hover {
            background: #f3f4f6;
            color: #5568d3;
        }

        .device-detail-cell .device-count {
            font-weight: 600;
            color: #667eea;
        }

        .device-detail-cell .device-preview {
            font-size: 12px;
            color: #6b7280;
            margin-top: 4px;
        }

        /* 设备列表弹框样式 */
        .device-list-modal .modal-content {
            max-width: 700px;
        }

        .device-list-table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 20px;
        }

        .device-list-table th,
        .device-list-table td {
            padding: 12px;
            text-align: left;
            border-bottom: 1px solid #e5e7eb;
        }

        .device-list-table th {
            background: #f9fafb;
            font-weight: 600;
            color: #374151;
        }

        .device-list-table tr:hover {
            background: #f9fafb;
        }

        .device-list-empty {
            text-align: center;
            padding: 40px;
            color: #6b7280;
        }

        .actions {
            display: flex;
            gap: 8px;
        }

        .btn-sm {
            padding: 6px 12px;
            font-size: 12px;
        }

        .license-key-cell {
            display: flex;
            align-items: center;
            gap: 8px;
            max-width: 200px;
        }

        .license-key-text {
            flex: 1;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            font-weight: 600;
        }

        .copy-btn {
            padding: 6px 12px;
            font-size: 12px;
            background: #667eea;
            color: white;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            transition: all 0.2s;
            flex-shrink: 0;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .copy-btn:hover {
            background: #5568d3;
            transform: translateY(-1px);
            box-shadow: 0 2px 4px rgba(102, 126, 234, 0.3);
        }

        .copy-btn:active {
            transform: translateY(0);
        }

        /* Toast 通知样式 */
        .toast-container {
            position: fixed;
            top: 20px;
            right: 20px;
            z-index: 10000;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .toast {
            background: white;
            padding: 16px 20px;
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
            display: flex;
            align-items: center;
            gap: 12px;
            min-width: 300px;
            max-width: 400px;
            animation: slideInRight 0.3s ease-out;
            position: relative;
        }

        @keyframes slideInRight {
            from {
                transform: translateX(100%);
                opacity: 0;
            }
            to {
                transform: translateX(0);
                opacity: 1;
            }
        }

        .toast.success {
            border-left: 4px solid #10b981;
        }

        .toast.error {
            border-left: 4px solid #ef4444;
        }

        .toast.warning {
            border-left: 4px solid #f59e0b;
        }

        .toast.info {
            border-left: 4px solid #3b82f6;
        }

        .toast-icon {
            font-size: 20px;
            flex-shrink: 0;
        }

        .toast.success .toast-icon {
            color: #10b981;
        }

        .toast.error .toast-icon {
            color: #ef4444;
        }

        .toast.warning .toast-icon {
            color: #f59e0b;
        }

        .toast.info .toast-icon {
            color: #3b82f6;
        }

        .toast-message {
            flex: 1;
            color: #374151;
            font-size: 14px;
            line-height: 1.5;
        }

        .toast-close {
            background: none;
            border: none;
            font-size: 18px;
            color: #9ca3af;
            cursor: pointer;
            padding: 0;
            width: 20px;
            height: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .toast-close:hover {
            color: #374151;
        }

        /* 确认对话框样式 */
        .confirm-dialog {
            display: none;
            position: fixed;
            z-index: 10001;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            align-items: center;
            justify-content: center;
            animation: fadeIn 0.3s;
        }

        .confirm-dialog.show {
            display: flex;
        }

        .confirm-content {
            background: white;
            border-radius: 10px;
            padding: 30px;
            width: 90%;
            max-width: 400px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
            animation: slideDown 0.3s;
        }

        .confirm-icon {
            font-size: 48px;
            text-align: center;
            margin-bottom: 20px;
        }

        .confirm-title {
            font-size: 20px;
            font-weight: 600;
            color: #374151;
            text-align: center;
            margin-bottom: 15px;
        }

        .confirm-message {
            color: #6b7280;
            text-align: center;
            margin-bottom: 25px;
            line-height: 1.6;
        }

        .confirm-actions {
            display: flex;
            gap: 10px;
            justify-content: center;
        }

        .confirm-actions .btn {
            min-width: 100px;
        }

        /* 统计信息卡片样式 */
        .stats-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-bottom: 20px;
        }

        .stat-card {
            background: white;
            border-radius: 10px;
            padding: 20px;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
            display: flex;
            flex-direction: column;
        }

        .stat-label {
            color: #6b7280;
            font-size: 14px;
            margin-bottom: 8px;
        }

        .stat-value {
            color: #111827;
            font-size: 28px;
            font-weight: 600;
        }

        .stat-card.primary .stat-value {
            color: #667eea;
        }

        .stat-card.success .stat-value {
            color: #10b981;
        }

        .stat-card.warning .stat-value {
            color: #f59e0b;
        }

        .stat-card.danger .stat-value {
            color: #ef4444;
        }

        /* 筛选和操作栏样式 */
        .filter-bar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
            flex-wrap: wrap;
            gap: 15px;
        }

        .filter-group {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .filter-group label {
            color: #374151;
            font-weight: 500;
            font-size: 14px;
        }

        .filter-select {
            padding: 8px 12px;
            border: 1px solid #d1d5db;
            border-radius: 5px;
            font-size: 14px;
            background: white;
            cursor: pointer;
            min-width: 120px;
        }

        .filter-select:focus {
            outline: none;
            border-color: #667eea;
            box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
        }
    </style>
</head>
<body>
    <!-- Toast 通知容器 -->
    <div class="toast-container" id="toast-container"></div>

    <!-- 确认对话框 -->
    <div id="confirmDialog" class="confirm-dialog">
        <div class="confirm-content">
            <div class="confirm-icon">⚠️</div>
            <div class="confirm-title" id="confirm-title">确认操作</div>
            <div class="confirm-message" id="confirm-message"></div>
            <div class="confirm-actions">
                <button class="btn btn-secondary" onclick="closeConfirmDialog(false)">取消</button>
                <button class="btn btn-danger" onclick="closeConfirmDialog(true)" id="confirm-ok-btn">确定</button>
            </div>
        </div>
    </div>

    <div class="container">
        <div class="header">
            <h1>🔑 License 管理平台</h1>
            <div style="display: flex; gap: 10px;">
                <button class="btn btn-primary" onclick="openBatchModal()">📦 批量生成</button>
                <button class="btn btn-primary" onclick="exportToCSV()">📥 导出 CSV</button>
                <button class="btn btn-primary" onclick="openCreateModal()">+ 创建 License</button>
            </div>
        </div>

        <!-- 统计信息卡片 -->
        <div class="stats-container" id="stats-container" style="display: none;">
            <div class="stat-card primary">
                <div class="stat-label">总 License 数</div>
                <div class="stat-value" id="stat-total">0</div>
            </div>
            <div class="stat-card success">
                <div class="stat-label">已激活</div>
                <div class="stat-value" id="stat-activated">0</div>
            </div>
            <div class="stat-card warning">
                <div class="stat-label">未激活</div>
                <div class="stat-value" id="stat-unactivated">0</div>
            </div>
            <div class="stat-card danger">
                <div class="stat-label">总设备数</div>
                <div class="stat-value" id="stat-devices">0</div>
            </div>
        </div>

        <div class="card">
            <div id="loading" class="loading" style="display: none;">加载中...</div>
            <div id="empty-state" class="empty-state" style="display: none;">
                <svg fill="none" stroke="currentColor" viewBox="0 0 24 24">
                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 12h6m-6 4h6m2 5H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z"></path>
                </svg>
                <p>暂无 License 数据</p>
            </div>
            <div class="table-container" id="table-container" style="display: none;">
                <!-- 筛选和操作栏 -->
                <div class="filter-bar">
                    <div class="filter-group">
                        <label for="status-filter">状态筛选：</label>
                        <select id="status-filter" class="filter-select" onchange="handleStatusFilter()">
                            <option value="">全部</option>
                            <option value="activated">已激活</option>
                            <option value="unactivated">未激活</option>
                        </select>
                    </div>
                    <div style="display: flex; gap: 10px;">
                        <button class="btn btn-primary" id="batch-update-btn" onclick="openBatchUpdateModal()" style="display: none;">
                            ⚙️ 批量修改最大设备数
                        </button>
                        <button class="btn btn-danger" id="batch-delete-btn" onclick="batchDeleteLicenses()" style="display: none;">
                            批量删除
                        </button>
                    </div>
                </div>
                <div style="margin-bottom: 15px; display: flex; align-items: center; gap: 10px;">
                    <input type="checkbox" id="select-all" onchange="toggleSelectAll()" style="width: 18px; height: 18px; cursor: pointer;">
                    <label for="select-all" style="cursor: pointer; user-select: none;">全选</label>
                    <span id="selected-count" style="color: #6b7280; font-size: 14px;">已选择 0 项</span>
                </div>
                <table>
                    <thead>
                        <tr>
                            <th style="width: 50px;">
                                <input type="checkbox" id="select-all-header" onchange="toggleSelectAll()" style="width: 18px; height: 18px; cursor: pointer;">
                            </th>
                            <th>ID</th>
                            <th>激活码</th>
                            <th>设备详情</th>
                            <th>绑定设备数</th>
                            <th>备注</th>
                            <th>创建时间</th>
                            <th>操作</th>
                        </tr>
                    </thead>
                    <tbody id="license-table-body">
                    </tbody>
                </table>
                <div class="pagination" id="pagination"></div>
            </div>
        </div>
    </div>

    <!-- 创建/编辑 Modal -->
    <div id="licenseModal" class="modal">
        <div class="modal-content">
            <div class="modal-header">
                <h2 id="modal-title">创建 License</h2>
                <button class="close" onclick="closeModal()">&times;</button>
            </div>
            <form id="licenseForm" onsubmit="handleSubmit(event)">
                <input type="hidden" id="license-id">
                <div class="form-group">
                    <label for="license-key">激活码 *</label>
                    <input type="text" id="license-key" required placeholder="例如: VIP-8888">
                </div>
                <div class="form-group">
                    <label for="license-max-devices">最大设备数 *</label>
                    <input type="number" id="license-max-devices" required min="1" value="2">
                </div>
                <div class="form-group">
                    <label for="license-bound-devices">已绑定设备 (JSON 数组，可选)</label>
                    <input type="text" id="license-bound-devices" placeholder='例如: ["device-1", "device-2"]'>
                </div>
                <div class="form-group">
                    <label for="license-remark">备注 (可选)</label>
                    <textarea id="license-remark" rows="3" placeholder="请输入备注信息" style="width: 100%; padding: 10px; border: 1px solid #d1d5db; border-radius: 5px; font-size: 14px; font-family: inherit; resize: vertical;"></textarea>
                </div>
                <div class="form-actions">
                    <button type="button" class="btn btn-secondary" onclick="closeModal()">取消</button>
                    <button type="submit" class="btn btn-primary">保存</button>
                </div>
            </form>
        </div>
    </div>

    <!-- 批量生成 Modal -->
    <div id="batchModal" class="modal">
        <div class="modal-content">
            <div class="modal-header">
                <h2>批量生成 License</h2>
                <button class="close" onclick="closeBatchModal()">&times;</button>
            </div>
            <form id="batchForm" onsubmit="handleBatchSubmit(event)">
                <div class="form-group">
                    <label for="batch-prefix">激活码前缀 *</label>
                    <input type="text" id="batch-prefix" required placeholder="例如: VIP" value="VIP">
                    <small style="color: #6b7280; font-size: 12px; margin-top: 4px; display: block;">
                        生成的激活码格式：前缀-随机32位字符串（如：VIP-A3B9C2D4E5F6G7H8I9J0K1L2M3N4O5P6）
                    </small>
                </div>
                <div class="form-group">
                    <label for="batch-count">生成数量 *</label>
                    <input type="number" id="batch-count" required min="1" max="1000" value="10">
                    <small style="color: #6b7280; font-size: 12px; margin-top: 4px; display: block;">
                        一次最多可生成 1000 个
                    </small>
                </div>
                <div class="form-group">
                    <label for="batch-max-devices">最大设备数 *</label>
                    <input type="number" id="batch-max-devices" required min="1" value="2">
                </div>
                <div class="form-actions">
                    <button type="button" class="btn btn-secondary" onclick="closeBatchModal()">取消</button>
                    <button type="submit" class="btn btn-primary">生成</button>
                </div>
            </form>
        </div>
    </div>

    <!-- 设备列表 Modal -->
    <div id="deviceListModal" class="modal device-list-modal">
        <div class="modal-content">
            <div class="modal-header">
                <h2 id="device-list-title">设备列表</h2>
                <button class="close" onclick="closeDeviceListModal()">&times;</button>
            </div>
            <div id="device-list-content">
                <div class="device-list-empty">加载中...</div>
            </div>
        </div>
    </div>

    <!-- 批量修改最大设备数 Modal -->
    <div id="batchUpdateModal" class="modal">
        <div class="modal-content">
            <div class="modal-header">
                <h2>批量修改最大设备数</h2>
                <button class="close" onclick="closeBatchUpdateModal()">&times;</button>
            </div>
            <form id="batchUpdateForm" onsubmit="handleBatchUpdateSubmit(event)">
                <div class="form-group">
                    <label>已选择 <span id="batch-update-count">0</span> 个 License</label>
                </div>
                <div class="form-group">
                    <label for="batch-update-max-devices">新的最大设备数 *</label>
                    <input type="number" id="batch-update-max-devices" required min="1" value="2">
                    <small style="color: #6b7280; font-size: 12px; margin-top: 4px; display: block;">
                        将把选中 License 的最大设备数统一修改为此值
                    </small>
                </div>
                <div class="form-actions">
                    <button type="button" class="btn btn-secondary" onclick="closeBatchUpdateModal()">取消</button>
                    <button type="submit" class="btn btn-primary">确认修改</button>
                </div>
            </form>
        </div>
    </div>

    <script>
        // 使用相对路径，自动适配当前域名
        const API_BASE = '/api';
        let currentPage = 1;
        let pageSize = 10;
        let total = 0;
        let editingId = null;
        let currentStatusFilter = ''; // 当前状态筛选：''（全部）、'activated'（已激活）、'unactivated'（未激活）
        let allLicenses = []; // 存储所有License数据用于统计

        // Toast 通知函数
        function showToast(message, type = 'info', duration = 3000) {
            const container = document.getElementById('toast-container');
            const toast = document.createElement('div');
            toast.className = `toast ${type}`;
            
            const icons = {
                success: '✅',
                error: '❌',
                warning: '⚠️',
                info: 'ℹ️'
            };
            
            toast.innerHTML = `
                <span class="toast-icon">${icons[type] || icons.info}</span>
                <span class="toast-message">${message}</span>
                <button class="toast-close" onclick="this.parentElement.remove()">&times;</button>
            `;
            
            container.appendChild(toast);
            
            // 自动移除
            setTimeout(() => {
                if (toast.parentElement) {
                    toast.style.animation = 'slideInRight 0.3s ease-out reverse';
                    setTimeout(() => {
                        if (toast.parentElement) {
                            toast.remove();
                        }
                    }, 300);
                }
            }, duration);
        }

        // 确认对话框函数
        let confirmCallback = null;
        
        function showConfirmDialog(message, title = '确认操作', okText = '确定', okType = 'danger') {
            return new Promise((resolve) => {
                document.getElementById('confirm-title').textContent = title;
                document.getElementById('confirm-message').textContent = message;
                const okBtn = document.getElementById('confirm-ok-btn');
                okBtn.textContent = okText;
                okBtn.className = `btn btn-${okType}`;
                
                confirmCallback = resolve;
                document.getElementById('confirmDialog').classList.add('show');
            });
        }
        
        function closeConfirmDialog(confirmed) {
            document.getElementById('confirmDialog').classList.remove('show');
            if (confirmCallback) {
                confirmCallback(confirmed);
                confirmCallback = null;
            }
        }

        // 复制激活码到剪贴板
        async function copyLicenseKey(key) {
            try {
                await navigator.clipboard.writeText(key);
                showToast('激活码已复制到剪贴板', 'success', 2000);
            } catch (err) {
                // 降级方案：使用传统方法
                const textArea = document.createElement('textarea');
                textArea.value = key;
                textArea.style.position = 'fixed';
                textArea.style.left = '-999999px';
                document.body.appendChild(textArea);
                textArea.select();
                try {
                    document.execCommand('copy');
                    showToast('激活码已复制到剪贴板', 'success', 2000);
                } catch (err) {
                    showToast('复制失败，请手动复制', 'error');
                }
                document.body.removeChild(textArea);
            }
        }

        // 全选/取消全选
        function toggleSelectAll() {
            const selectAll = document.getElementById('select-all');
            const selectAllHeader = document.getElementById('select-all-header');
            const checkboxes = document.querySelectorAll('.license-checkbox');
            
            // 检查当前是否所有复选框都已选中
            const allChecked = checkboxes.length > 0 && 
                Array.from(checkboxes).every(checkbox => checkbox.checked);
            
            // 如果全部已选中，则取消全选；否则全选
            const isChecked = !allChecked;
            
            checkboxes.forEach(checkbox => {
                checkbox.checked = isChecked;
            });
            
            // 同步两个全选复选框
            selectAll.checked = isChecked;
            selectAllHeader.checked = isChecked;
            
            updateSelectedCount();
        }

        // 更新选中数量
        function updateSelectedCount() {
            const checkboxes = document.querySelectorAll('.license-checkbox:checked');
            const count = checkboxes.length;
            const selectedCountEl = document.getElementById('selected-count');
            const batchDeleteBtn = document.getElementById('batch-delete-btn');
            
            selectedCountEl.textContent = `已选择 ${count} 项`;
            
            if (count > 0) {
                batchDeleteBtn.style.display = 'block';
            } else {
                batchDeleteBtn.style.display = 'none';
            }
            
            // 更新批量操作按钮
            updateBatchButtons();
            
            // 更新全选复选框状态
            const allCheckboxes = document.querySelectorAll('.license-checkbox');
            const allChecked = allCheckboxes.length > 0 && checkboxes.length === allCheckboxes.length;
            document.getElementById('select-all').checked = allChecked;
            document.getElementById('select-all-header').checked = allChecked;
        }

        // 批量删除 License
        async function batchDeleteLicenses() {
            const checkboxes = document.querySelectorAll('.license-checkbox:checked');
            const selectedIds = Array.from(checkboxes).map(cb => parseInt(cb.value));
            
            if (selectedIds.length === 0) {
                showToast('请至少选择一个 License', 'warning');
                return;
            }
            
            const confirmed = await showConfirmDialog(
                `确定要删除选中的 ${selectedIds.length} 个 License 吗？此操作不可恢复！`,
                '确认批量删除',
                '删除',
                'danger'
            );
            
            if (!confirmed) {
                return;
            }
            
            try {
                const response = await apiRequest(`${API_BASE}/licenses/batch`, {
                    method: 'DELETE',
                    body: JSON.stringify({
                        ids: selectedIds
                    })
                });
                if (!response) return;
                
                const result = await response.json();
                
                if (result.code === 0) {
                    showToast(result.msg, 'success');
                    loadStatistics(); // 重新加载统计信息
                    loadLicenses(currentPage);
                } else {
                    showToast('批量删除失败: ' + result.msg, 'error');
                }
            } catch (error) {
                showToast('请求失败: ' + error.message, 'error');
            }
        }

        // 获取认证token
        function getAuthToken() {
            return localStorage.getItem('auth_token');
        }

        // 检查是否已登录
        function checkAuth() {
            const token = getAuthToken();
            if (!token) {
                window.location.href = '/web/login.html';
                return false;
            }
            return true;
        }

        // 获取API请求头（包含token）
        function getAuthHeaders() {
            const token = getAuthToken();
            return {
                'Content-Type': 'application/json',
                'Authorization': `Bearer ${token}`
            };
        }

        // 处理API错误响应
        async function handleApiError(response) {
            if (response.status === 401) {
                // 未授权，清除token并跳转到登录页
                localStorage.removeItem('auth_token');
                showToast('登录已过期，请重新登录', 'error');
                setTimeout(() => {
                    window.location.href = '/web/login.html';
                }, 1000);
                return true;
            }
            return false;
        }

        // 统一的API请求函数
        async function apiRequest(url, options = {}) {
            const headers = getAuthHeaders();
            if (options.headers) {
                Object.assign(headers, options.headers);
            }
            
            const response = await fetch(url, {
                ...options,
                headers: headers
            });
            
            if (await handleApiError(response)) {
                return null;
            }
            
            return response;
        }

        // 页面加载时检查登录状态
        window.onload = () => {
            if (checkAuth()) {
                loadStatistics();
                loadLicenses();
            }
        };

        // 加载统计信息
        async function loadStatistics() {
            try {
                const response = await apiRequest(`${API_BASE}/licenses/statistics`);
                if (!response) return;
                
                const result = await response.json();
                if (result.code === 0 && result.data) {
                    const stats = result.data;
                    document.getElementById('stat-total').textContent = stats.total || 0;
                    document.getElementById('stat-activated').textContent = stats.activated || 0;
                    document.getElementById('stat-unactivated').textContent = stats.unactivated || 0;
                    document.getElementById('stat-devices').textContent = stats.total_devices || 0;
                    document.getElementById('stats-container').style.display = 'grid';
                }
            } catch (error) {
                console.error('加载统计信息失败:', error);
            }
        }

        // 加载 License 列表
        async function loadLicenses(page = 1) {
            currentPage = page;
            const loadingEl = document.getElementById('loading');
            const tableContainer = document.getElementById('table-container');
            const emptyState = document.getElementById('empty-state');

            loadingEl.style.display = 'block';
            tableContainer.style.display = 'none';
            emptyState.style.display = 'none';

            try {
                // 构建查询URL
                let url = `${API_BASE}/licenses?page=${page}&page_size=${pageSize}`;
                if (currentStatusFilter) {
                    url += `&status=${currentStatusFilter}`;
                }
                
                const response = await apiRequest(url);
                if (!response) return;
                
                const result = await response.json();

                if (result.code === 0) {
                    total = result.total;
                    const licenses = result.data;

                    if (licenses.length === 0) {
                        loadingEl.style.display = 'none';
                        emptyState.style.display = 'block';
                        return;
                    }

                    renderTable(licenses);
                    renderPagination();
                    loadingEl.style.display = 'none';
                    tableContainer.style.display = 'block';
                    
                    // 更新批量操作按钮显示
                    updateBatchButtons();
                } else {
                    showToast('加载失败: ' + result.msg, 'error');
                    loadingEl.style.display = 'none';
                }
            } catch (error) {
                showToast('请求失败: ' + error.message, 'error');
                loadingEl.style.display = 'none';
            }
        }

        // 状态筛选处理
        function handleStatusFilter() {
            const filterSelect = document.getElementById('status-filter');
            currentStatusFilter = filterSelect.value;
            loadLicenses(1); // 重置到第一页
        }

        // 更新批量操作按钮显示
        function updateBatchButtons() {
            const checkboxes = document.querySelectorAll('.license-checkbox:checked');
            const batchUpdateBtn = document.getElementById('batch-update-btn');
            if (checkboxes.length > 0) {
                batchUpdateBtn.style.display = 'block';
            } else {
                batchUpdateBtn.style.display = 'none';
            }
        }

        // 渲染表格
        function renderTable(licenses) {
            const tbody = document.getElementById('license-table-body');
            tbody.innerHTML = licenses.map(license => {
                let boundDevices = [];
                try {
                    boundDevices = JSON.parse(license.bound_devices || '[]');
                } catch (e) {
                    boundDevices = [];
                }
                
                // 解析设备激活时间
                let deviceActivations = {};
                try {
                    const activationsStr = JSON.parse(license.device_activations || '{}');
                    deviceActivations = activationsStr;
                } catch (e) {
                    deviceActivations = {};
                }
                
                const boundCount = boundDevices.length;
                const isFull = boundCount >= license.max_devices;
                const createdDate = new Date(license.created_at).toLocaleString('zh-CN');

                // 限制激活码显示长度为10个字符
                const displayKey = license.key.length > 10 ? license.key.substring(0, 10) + '...' : license.key;
                
                // 构建设备详情显示
                let deviceDetailHtml = '';
                if (boundDevices.length === 0) {
                    deviceDetailHtml = '<span style="color: #9ca3af;">无设备</span>';
                } else {
                    // 显示前2个设备作为预览
                    const previewDevices = boundDevices.slice(0, 2);
                    const previewText = previewDevices.map(deviceId => {
                        const activationTime = deviceActivations[deviceId];
                        if (activationTime) {
                            const date = new Date(activationTime);
                            return `${deviceId} (${date.toLocaleString('zh-CN')})`;
                        }
                        return `${deviceId} (未记录)`;
                    }).join('、');
                    
                    const moreCount = boundDevices.length - 2;
                    // 使用 data 属性安全传递 licenseKey
                    const escapedKey = license.key.replace(/"/g, '&quot;').replace(/'/g, '&#39;');
                    deviceDetailHtml = `
                        <div class="device-detail-cell" data-license-id="${license.id}" data-license-key="${escapedKey}" onclick="showDeviceListFromElement(this)">
                            <div class="device-count">${boundCount} 个设备</div>
                            <div class="device-preview">${previewText}${moreCount > 0 ? ` 等${moreCount}个...` : ''}</div>
                        </div>
                    `;
                }
                
                return `
                    <tr>
                        <td style="text-align: center;">
                            <input type="checkbox" class="license-checkbox" value="${license.id}" onchange="updateSelectedCount()" style="width: 18px; height: 18px; cursor: pointer;">
                        </td>
                        <td>${license.id}</td>
                        <td>
                            <div class="license-key-cell" title="${license.key}">
                                <span class="license-key-text">${displayKey}</span>
                                <button class="copy-btn" onclick="copyLicenseKey('${license.key}')" title="复制激活码">
                                    <span>复制</span>
                                </button>
                            </div>
                        </td>
                        <td>
                            ${deviceDetailHtml}
                        </td>
                        <td>
                            <span class="badge ${isFull ? 'badge-warning' : 'badge-success'}">
                                ${boundCount} / ${license.max_devices}
                            </span>
                        </td>
                        <td>
                            <div style="max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;" title="${license.remark || ''}">
                                ${license.remark || '<span style="color: #9ca3af;">无</span>'}
                            </div>
                        </td>
                        <td>${createdDate}</td>
                        <td>
                            <div class="actions">
                                <button class="btn btn-primary btn-sm" onclick="editLicense(${license.id})">编辑</button>
                                <button class="btn btn-danger btn-sm" onclick="deleteLicense(${license.id}, '${license.key}')">删除</button>
                            </div>
                        </td>
                    </tr>
                `;
            }).join('');
        }

        // 渲染分页
        function renderPagination() {
            const pagination = document.getElementById('pagination');
            const totalPages = Math.ceil(total / pageSize);

            if (totalPages <= 1) {
                pagination.innerHTML = '';
                return;
            }

            pagination.innerHTML = `
                <button onclick="loadLicenses(${currentPage - 1})" ${currentPage === 1 ? 'disabled' : ''}>
                    上一页
                </button>
                <span class="page-info">第 ${currentPage} / ${totalPages} 页 (共 ${total} 条)</span>
                <button onclick="loadLicenses(${currentPage + 1})" ${currentPage >= totalPages ? 'disabled' : ''}>
                    下一页
                </button>
            `;
        }

        // 打开创建 Modal
        function openCreateModal() {
            editingId = null;
            document.getElementById('modal-title').textContent = '创建 License';
            document.getElementById('license-id').value = '';
            document.getElementById('license-key').value = '';
            document.getElementById('license-max-devices').value = '2';
            document.getElementById('license-bound-devices').value = '';
            document.getElementById('license-remark').value = '';
            document.getElementById('license-key').disabled = false;
            document.getElementById('licenseModal').classList.add('show');
        }

        // 编辑 License
        async function editLicense(id) {
            try {
                const response = await apiRequest(`${API_BASE}/licenses/${id}`);
                if (!response) return;
                
                const result = await response.json();

                if (result.code === 0) {
                    const license = result.data;
                    editingId = id;
                    document.getElementById('modal-title').textContent = '编辑 License';
                    document.getElementById('license-id').value = id;
                    document.getElementById('license-key').value = license.key;
                    document.getElementById('license-max-devices').value = license.max_devices;
                    document.getElementById('license-bound-devices').value = license.bound_devices || '[]';
                    document.getElementById('license-remark').value = license.remark || '';
                    document.getElementById('license-key').disabled = false;
                    document.getElementById('licenseModal').classList.add('show');
                } else {
                    showToast('加载失败: ' + result.msg, 'error');
                }
            } catch (error) {
                showToast('请求失败: ' + error.message, 'error');
            }
        }

        // 关闭 Modal
        function closeModal() {
            document.getElementById('licenseModal').classList.remove('show');
        }

        // 提交表单
        async function handleSubmit(event) {
            event.preventDefault();

            const id = document.getElementById('license-id').value;
            const key = document.getElementById('license-key').value;
            const maxDevices = parseInt(document.getElementById('license-max-devices').value);
            const boundDevices = document.getElementById('license-bound-devices').value || '[]';
            const remark = document.getElementById('license-remark').value || '';

            // 验证 boundDevices 是否为有效 JSON
            try {
                JSON.parse(boundDevices);
            } catch (e) {
                showToast('已绑定设备必须是有效的 JSON 数组格式', 'error');
                return;
            }

            try {
                let response;
                if (editingId) {
                    // 更新
                    const updateData = {
                        max_devices: maxDevices,
                        remark: remark  // 总是发送remark字段，即使是空字符串
                    };
                    if (boundDevices) {
                        updateData.bound_devices = boundDevices;
                    }
                    response = await apiRequest(`${API_BASE}/licenses/${id}`, {
                        method: 'PUT',
                        body: JSON.stringify(updateData)
                    });
                } else {
                    // 创建
                    response = await apiRequest(`${API_BASE}/licenses`, {
                        method: 'POST',
                        body: JSON.stringify({
                            key: key,
                            max_devices: maxDevices,
                            bound_devices: boundDevices,
                            remark: remark
                        })
                    });
                }

                if (!response) return;
                
                const result = await response.json();

                if (result.code === 0) {
                    showToast(editingId ? '更新成功' : '创建成功', 'success');
                    closeModal();
                    loadStatistics(); // 重新加载统计信息
                    loadLicenses(currentPage);
                } else {
                    showToast('操作失败: ' + result.msg, 'error');
                }
            } catch (error) {
                showToast('请求失败: ' + error.message, 'error');
            }
        }

        // 删除 License
        async function deleteLicense(id, key) {
            const confirmed = await showConfirmDialog(
                `确定要删除 License "${key}" 吗？此操作不可恢复！`,
                '确认删除',
                '删除',
                'danger'
            );
            
            if (!confirmed) {
                return;
            }

            try {
                const response = await apiRequest(`${API_BASE}/licenses/${id}`, {
                    method: 'DELETE'
                });
                if (!response) return;
                
                const result = await response.json();

                if (result.code === 0) {
                    showToast('删除成功', 'success');
                    loadStatistics(); // 重新加载统计信息
                    loadLicenses(currentPage);
                } else {
                    showToast('删除失败: ' + result.msg, 'error');
                }
            } catch (error) {
                showToast('请求失败: ' + error.message, 'error');
            }
        }

        // 打开批量生成 Modal
        function openBatchModal() {
            document.getElementById('batch-prefix').value = 'VIP';
            document.getElementById('batch-count').value = '10';
            document.getElementById('batch-max-devices').value = '2';
            document.getElementById('batchModal').classList.add('show');
        }

        // 关闭批量生成 Modal
        function closeBatchModal() {
            document.getElementById('batchModal').classList.remove('show');
        }

        // 批量生成提交
        async function handleBatchSubmit(event) {
            event.preventDefault();

            const prefix = document.getElementById('batch-prefix').value.trim();
            const count = parseInt(document.getElementById('batch-count').value);
            const maxDevices = parseInt(document.getElementById('batch-max-devices').value);

            if (!prefix) {
                showToast('请输入激活码前缀', 'warning');
                return;
            }

            if (count <= 0 || count > 1000) {
                showToast('生成数量必须在 1-1000 之间', 'warning');
                return;
            }

            const confirmed = await showConfirmDialog(
                `确定要批量生成 ${count} 个激活码吗？`,
                '确认批量生成',
                '生成',
                'primary'
            );
            
            if (!confirmed) {
                return;
            }

            try {
                const response = await apiRequest(`${API_BASE}/licenses/batch`, {
                    method: 'POST',
                    body: JSON.stringify({
                        prefix: prefix,
                        count: count,
                        max_devices: maxDevices
                    })
                });
                if (!response) return;

                const result = await response.json();

                if (result.code === 0) {
                    showToast(result.msg, 'success', 4000);
                    closeBatchModal();
                    loadStatistics(); // 重新加载统计信息
                    loadLicenses(1); // 重新加载第一页
                } else {
                    showToast('批量生成失败: ' + result.msg, 'error');
                }
            } catch (error) {
                showToast('请求失败: ' + error.message, 'error');
            }
        }

        // 从元素获取数据并显示设备列表弹框
        function showDeviceListFromElement(element) {
            const licenseId = parseInt(element.getAttribute('data-license-id'));
            const licenseKey = element.getAttribute('data-license-key');
            showDeviceList(licenseId, licenseKey);
        }

        // 显示设备列表弹框
        async function showDeviceList(licenseId, licenseKey) {
            try {
                const response = await apiRequest(`${API_BASE}/licenses/${licenseId}`);
                if (!response) return;
                
                const result = await response.json();

                if (result.code === 0) {
                    const license = result.data;
                    let boundDevices = [];
                    try {
                        boundDevices = JSON.parse(license.bound_devices || '[]');
                    } catch (e) {
                        boundDevices = [];
                    }
                    
                    // 解析设备激活时间
                    let deviceActivations = {};
                    try {
                        const activationsStr = JSON.parse(license.device_activations || '{}');
                        deviceActivations = activationsStr;
                    } catch (e) {
                        deviceActivations = {};
                    }
                    
                    // 解析设备心跳时间
                    let deviceHeartbeats = {};
                    try {
                        const heartbeatsStr = JSON.parse(license.device_heartbeats || '{}');
                        deviceHeartbeats = heartbeatsStr;
                    } catch (e) {
                        deviceHeartbeats = {};
                    }
                    
                    // 设置标题
                    document.getElementById('device-list-title').textContent = `设备列表 - ${licenseKey}`;
                    
                    // 渲染设备列表
                    const contentEl = document.getElementById('device-list-content');
                    if (boundDevices.length === 0) {
                        contentEl.innerHTML = `
                            <div class="device-list-empty">
                                <p>暂无绑定设备</p>
                            </div>
                        `;
                    } else {
                        const tableHtml = `
                            <table class="device-list-table">
                                <thead>
                                    <tr>
                                        <th>序号</th>
                                        <th>设备ID</th>
                                        <th>激活时间</th>
                                        <th>最近心跳时间</th>
                                    </tr>
                                </thead>
                                <tbody>
                                    ${boundDevices.map((deviceId, index) => {
                                        const activationTime = deviceActivations[deviceId];
                                        let timeDisplay = '<span style="color: #9ca3af;">未记录</span>';
                                        if (activationTime) {
                                            const date = new Date(activationTime);
                                            timeDisplay = date.toLocaleString('zh-CN');
                                        }
                                        
                                        // 处理心跳时间显示
                                        const heartbeatTime = deviceHeartbeats[deviceId];
                                        let heartbeatDisplay = '<span style="color: #9ca3af;">未记录</span>';
                                        if (heartbeatTime) {
                                            const heartbeatDate = new Date(heartbeatTime);
                                            const now = new Date();
                                            const diff = now - heartbeatDate;
                                            const seconds = Math.floor(diff / 1000);
                                            const minutes = Math.floor(seconds / 60);
                                            const hours = Math.floor(minutes / 60);
                                            const days = Math.floor(hours / 24);
                                            
                                            // 格式化相对时间
                                            let relativeTime = '';
                                            let heartbeatColor = '#6b7280'; // 默认灰色
                                            if (days > 0) {
                                                relativeTime = `${days}天前`;
                                                heartbeatColor = '#ef4444'; // 红色 - 很久没心跳
                                            } else if (hours > 0) {
                                                relativeTime = `${hours}小时前`;
                                                heartbeatColor = '#f59e0b'; // 橙色 - 较久
                                            } else if (minutes > 0) {
                                                relativeTime = `${minutes}分钟前`;
                                                heartbeatColor = minutes < 10 ? '#10b981' : '#f59e0b'; // 绿色（10分钟内）或橙色
                                            } else if (seconds > 0) {
                                                relativeTime = `${seconds}秒前`;
                                                heartbeatColor = '#10b981'; // 绿色
                                            } else {
                                                relativeTime = '刚刚';
                                                heartbeatColor = '#10b981'; // 绿色
                                            }
                                            
                                            heartbeatDisplay = `${heartbeatDate.toLocaleString('zh-CN')} <span style="color: ${heartbeatColor}; font-size: 11px; font-weight: 400; margin-left: 6px;">(${relativeTime})</span>`;
                                        }
                                        
                                        return `
                                            <tr>
                                                <td>${index + 1}</td>
                                                <td><strong>${deviceId}</strong></td>
                                                <td>${timeDisplay}</td>
                                                <td>${heartbeatDisplay}</td>
                                            </tr>
                                        `;
                                    }).join('')}
                                </tbody>
                            </table>
                            <div style="margin-top: 15px; color: #6b7280; font-size: 14px; text-align: right;">
                                共 ${boundDevices.length} 个设备
                            </div>
                        `;
                        contentEl.innerHTML = tableHtml;
                    }
                    
                    document.getElementById('deviceListModal').classList.add('show');
                } else {
                    showToast('加载失败: ' + result.msg, 'error');
                }
            } catch (error) {
                showToast('请求失败: ' + error.message, 'error');
            }
        }

        // 关闭设备列表弹框
        function closeDeviceListModal() {
            document.getElementById('deviceListModal').classList.remove('show');
        }

        // 导出CSV
        async function exportToCSV() {
            try {
                // 如果有筛选条件，先获取筛选后的数据，然后前端生成CSV
                if (currentStatusFilter) {
                    showToast('正在导出筛选后的数据...', 'info');
                    
                    const listResponse = await apiRequest(`${API_BASE}/licenses?page=1&page_size=10000&status=${currentStatusFilter}`);
                    if (!listResponse) return;
                    
                    const listResult = await listResponse.json();
                    if (listResult.code === 0 && listResult.data.length > 0) {
                        const licenses = listResult.data;
                        const headers = ['ID', '激活码', '最大设备数', '已绑定设备数', '绑定设备列表', '创建时间', '更新时间'];
                        const rows = licenses.map(license => {
                            let boundDevices = [];
                            try {
                                boundDevices = JSON.parse(license.bound_devices || '[]');
                            } catch (e) {
                                boundDevices = [];
                            }
                            
                            return [
                                license.id,
                                license.key,
                                license.max_devices,
                                boundDevices.length,
                                boundDevices.join('; '),
                                new Date(license.created_at).toLocaleString('zh-CN'),
                                new Date(license.updated_at).toLocaleString('zh-CN')
                            ];
                        });
                        
                        function escapeCSVField(field) {
                            if (field === null || field === undefined) return '';
                            const str = String(field);
                            if (str.includes(',') || str.includes('"') || str.includes('\n')) {
                                return '"' + str.replace(/"/g, '""') + '"';
                            }
                            return str;
                        }
                        
                        const csvContent = [
                            headers.map(escapeCSVField).join(','),
                            ...rows.map(row => row.map(escapeCSVField).join(','))
                        ].join('\n');
                        
                        const BOM = '\uFEFF';
                        const blob = new Blob([BOM + csvContent], { type: 'text/csv;charset=utf-8;' });
                        const link = document.createElement('a');
                        const url = URL.createObjectURL(blob);
                        link.setAttribute('href', url);
                        
                        const now = new Date();
                        const dateStr = now.toISOString().slice(0, 10).replace(/-/g, '');
                        const timeStr = now.toTimeString().slice(0, 8).replace(/:/g, '');
                        const statusStr = currentStatusFilter ? `_${currentStatusFilter}` : '';
                        link.setAttribute('download', `licenses${statusStr}_${dateStr}_${timeStr}.csv`);
                        
                        link.style.visibility = 'hidden';
                        document.body.appendChild(link);
                        link.click();
                        document.body.removeChild(link);
                        
                        showToast(`成功导出 ${licenses.length} 条记录`, 'success');
                    } else {
                        showToast('没有数据可导出', 'warning');
                    }
                } else {
                    // 没有筛选条件时，使用后端导出接口
                    const token = getAuthToken();
                    const url = `${API_BASE}/licenses/export?format=csv`;
                    
                    // 创建一个隐藏的表单来提交带token的请求
                    const form = document.createElement('form');
                    form.method = 'GET';
                    form.action = url;
                    form.style.display = 'none';
                    
                    // 添加token到请求头（通过fetch下载）
                    const response = await fetch(url, {
                        headers: getAuthHeaders()
                    });
                    
                    if (!response.ok) {
                        showToast('导出失败', 'error');
                        return;
                    }
                    
                    const blob = await response.blob();
                    const downloadUrl = URL.createObjectURL(blob);
                    const link = document.createElement('a');
                    link.href = downloadUrl;
                    
                    const now = new Date();
                    const dateStr = now.toISOString().slice(0, 10).replace(/-/g, '');
                    const timeStr = now.toTimeString().slice(0, 8).replace(/:/g, '');
                    link.setAttribute('download', `licenses_${dateStr}_${timeStr}.csv`);
                    
                    link.style.visibility = 'hidden';
                    document.body.appendChild(link);
                    link.click();
                    document.body.removeChild(link);
                    URL.revokeObjectURL(downloadUrl);
                    
                    showToast('导出成功', 'success');
                }
            } catch (error) {
                showToast('导出失败: ' + error.message, 'error');
            }
        }

        // 打开批量修改最大设备数弹框
        function openBatchUpdateModal() {
            const checkboxes = document.querySelectorAll('.license-checkbox:checked');
            const count = checkboxes.length;
            
            if (count === 0) {
                showToast('请至少选择一个 License', 'warning');
                return;
            }
            
            document.getElementById('batch-update-count').textContent = count;
            document.getElementById('batch-update-max-devices').value = '2';
            document.getElementById('batchUpdateModal').classList.add('show');
        }

        // 关闭批量修改弹框
        function closeBatchUpdateModal() {
            document.getElementById('batchUpdateModal').classList.remove('show');
        }

        // 批量修改最大设备数提交
        async function handleBatchUpdateSubmit(event) {
            event.preventDefault();
            
            const checkboxes = document.querySelectorAll('.license-checkbox:checked');
            const selectedIds = Array.from(checkboxes).map(cb => parseInt(cb.value));
            const maxDevices = parseInt(document.getElementById('batch-update-max-devices').value);
            
            if (selectedIds.length === 0) {
                showToast('请至少选择一个 License', 'warning');
                return;
            }
            
            if (maxDevices < 1) {
                showToast('最大设备数必须大于0', 'warning');
                return;
            }
            
            const confirmed = await showConfirmDialog(
                `确定要将选中的 ${selectedIds.length} 个 License 的最大设备数修改为 ${maxDevices} 吗？`,
                '确认批量修改',
                '确认',
                'primary'
            );
            
            if (!confirmed) {
                return;
            }
            
            try {
                // 使用批量更新接口
                const response = await apiRequest(`${API_BASE}/licenses/batch/max-devices`, {
                    method: 'PUT',
                    body: JSON.stringify({
                        ids: selectedIds,
                        max_devices: maxDevices
                    })
                });
                
                if (!response) return;
                
                const result = await response.json();
                
                if (result.code === 0) {
                    showToast(result.msg, 'success');
                    closeBatchUpdateModal();
                    // 清除所有选中状态
                    checkboxes.forEach(cb => cb.checked = false);
                    updateSelectedCount();
                    loadStatistics(); // 重新加载统计信息
                    loadLicenses(currentPage); // 重新加载列表
                } else {
                    showToast('批量修改失败: ' + result.msg, 'error');
                }
            } catch (error) {
                showToast('请求失败: ' + error.message, 'error');
            }
        }

        // 点击 Modal 外部关闭
        window.onclick = function(event) {
            const licenseModal = document.getElementById('licenseModal');
            const batchModal = document.getElementById('batchModal');
            const batchUpdateModal = document.getElementById('batchUpdateModal');
            const deviceListModal = document.getElementById('deviceListModal');
            const confirmDialog = document.getElementById('confirmDialog');
            
            if (event.target === licenseModal) {
                closeModal();
            }
            if (event.target === batchModal) {
                closeBatchModal();
            }
            if (event.target === batchUpdateModal) {
                closeBatchUpdateModal();
            }
            if (event.target === deviceListModal) {
                closeDeviceListModal();
            }
            if (event.target === confirmDialog) {
                closeConfirmDialog(false);
            }
        }
    </script>
</body>
</html>