class HelpComponent extends HTMLElement {
    constructor() {
        super();
        this.attachShadow({ mode: 'open' });
    }

    connectedCallback() {
        this.render();
        this.setupEventListeners();
    }

    render() {
        this.shadowRoot.innerHTML = `
            <style>
                :host {
                    display: block;
                    height: 100%;
                    overflow: auto;
                    padding: 16px;
                    box-sizing: border-box;
                }

                .help-container {
                    background-color: white;
                    border-radius: 8px;
                    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
                    padding: 16px;
                    height: 100%;
                    box-sizing: border-box;
                    display: flex;
                }

                .help-sidebar {
                    width: 240px;
                    border-right: 1px solid #e0e0e0;
                    padding-right: 16px;
                    overflow-y: auto;
                }

                .help-content {
                    flex: 1;
                    padding-left: 24px;
                    overflow-y: auto;
                }

                .search-box {
                    display: flex;
                    margin-bottom: 16px;
                    position: relative;
                }

                .search-input {
                    width: 100%;
                    padding: 8px 12px;
                    border: 1px solid #d9d9d9;
                    border-radius: 4px;
                    font-size: 14px;
                    outline: none;
                    transition: all 0.3s;
                }

                .search-input:focus {
                    border-color: #7986E7;
                    box-shadow: 0 0 0 2px rgba(121, 134, 231, 0.2);
                }

                .help-category {
                    margin-bottom: 16px;
                }

                .category-title {
                    font-size: 16px;
                    font-weight: bold;
                    color: #333;
                    margin-bottom: 8px;
                    cursor: pointer;
                    display: flex;
                    align-items: center;
                    justify-content: space-between;
                }

                .category-title::after {
                    content: '';
                    width: 0;
                    height: 0;
                    border-left: 5px solid transparent;
                    border-right: 5px solid transparent;
                    border-top: 5px solid #666;
                    transition: transform 0.3s;
                }

                .category-title.expanded::after {
                    transform: rotate(180deg);
                }

                .help-items {
                    margin-left: 8px;
                    border-left: 2px solid #f0f0f0;
                    padding-left: 12px;
                    display: none;
                }

                .help-items.expanded {
                    display: block;
                }

                .help-item {
                    padding: 6px 0;
                    font-size: 14px;
                    color: #666;
                    cursor: pointer;
                    transition: color 0.3s;
                }

                .help-item:hover {
                    color: #7986E7;
                }

                .help-item.active {
                    color: #8B6DB3;
                    font-weight: 500;
                }

                .content-title {
                    font-size: 24px;
                    font-weight: bold;
                    color: #333;
                    margin-bottom: 16px;
                    padding-bottom: 8px;
                    border-bottom: 1px solid #e0e0e0;
                }

                .content-body {
                    font-size: 15px;
                    line-height: 1.6;
                    color: #333;
                }

                .content-section {
                    margin-bottom: 24px;
                }

                .section-title {
                    font-size: 18px;
                    font-weight: bold;
                    color: #333;
                    margin-bottom: 12px;
                }

                .section-content {
                    font-size: 15px;
                    line-height: 1.6;
                    color: #333;
                }

                .code-block {
                    background-color: #f5f5f5;
                    padding: 12px;
                    border-radius: 4px;
                    font-family: monospace;
                    overflow-x: auto;
                    margin: 12px 0;
                }

                .note {
                    background-color: #f0f7ff;
                    border-left: 4px solid #1890ff;
                    padding: 12px;
                    margin: 12px 0;
                    border-radius: 0 4px 4px 0;
                }

                .warning {
                    background-color: #fff7e6;
                    border-left: 4px solid #faad14;
                    padding: 12px;
                    margin: 12px 0;
                    border-radius: 0 4px 4px 0;
                }

                .help-footer {
                    margin-top: 24px;
                    padding-top: 16px;
                    border-top: 1px solid #e0e0e0;
                    display: flex;
                    justify-content: space-between;
                    color: #666;
                    font-size: 14px;
                }

                .feedback-link {
                    color: #7986E7;
                    text-decoration: none;
                }

                .feedback-link:hover {
                    text-decoration: underline;
                }
            </style>
            <div class="help-container">
                <div class="help-sidebar">
                    <div class="search-box">
                        <input type="text" class="search-input" placeholder="搜索帮助文档..." />
                    </div>
                    
                    <div class="help-category">
                        <div class="category-title expanded">入门指南</div>
                        <div class="help-items expanded">
                            <div class="help-item active">系统概述</div>
                            <div class="help-item">快速开始</div>
                            <div class="help-item">基本概念</div>
                            <div class="help-item">用户界面</div>
                        </div>
                    </div>
                    
                    <div class="help-category">
                        <div class="category-title">功能指南</div>
                        <div class="help-items">
                            <div class="help-item">创建模型</div>
                            <div class="help-item">运行仿真</div>
                            <div class="help-item">数据分析</div>
                            <div class="help-item">监控与调试</div>
                            <div class="help-item">参数配置</div>
                        </div>
                    </div>
                    
                    <div class="help-category">
                        <div class="category-title">高级功能</div>
                        <div class="help-items">
                            <div class="help-item">API接口</div>
                            <div class="help-item">自定义扩展</div>
                            <div class="help-item">脚本编程</div>
                            <div class="help-item">性能优化</div>
                        </div>
                    </div>
                    
                    <div class="help-category">
                        <div class="category-title">常见问题</div>
                        <div class="help-items">
                            <div class="help-item">账户与权限</div>
                            <div class="help-item">连接问题</div>
                            <div class="help-item">数据导入导出</div>
                            <div class="help-item">错误诊断</div>
                        </div>
                    </div>
                </div>
                
                <div class="help-content">
                    <div class="content-title">系统概述</div>
                    
                    <div class="content-body">
                        <div class="content-section">
                            <div class="section-title">XNSim系统简介</div>
                            <div class="section-content">
                                XNSim是一个功能强大的仿真系统，专为复杂网络仿真设计，提供高性能、高可靠性的仿真环境。系统支持多种仿真模型，可满足不同领域的仿真需求，包括但不限于网络通信、交通系统、社交网络等。
                                
                                <div class="note">
                                    XNSim设计理念是简化复杂系统的仿真过程，通过直观的用户界面和强大的后台引擎，使用户能够专注于模型构建与结果分析，而不是繁琐的技术细节。
                                </div>
                            </div>
                        </div>
                        
                        <div class="content-section">
                            <div class="section-title">主要功能</div>
                            <div class="section-content">
                                <ul>
                                    <li><strong>模型构建</strong>：提供直观的界面创建和编辑仿真模型</li>
                                    <li><strong>参数配置</strong>：灵活设置仿真参数和环境变量</li>
                                    <li><strong>运行控制</strong>：支持单次运行、批量运行和定时运行</li>
                                    <li><strong>实时监控</strong>：监控仿真进程和关键指标</li>
                                    <li><strong>数据收集</strong>：自动采集和存储仿真数据</li>
                                    <li><strong>结果分析</strong>：提供多种可视化和分析工具</li>
                                    <li><strong>API接口</strong>：支持与第三方系统集成</li>
                                </ul>
                            </div>
                        </div>
                        
                        <div class="content-section">
                            <div class="section-title">系统架构</div>
                            <div class="section-content">
                                XNSim采用现代化的微服务架构，由以下几个主要组件构成：
                                
                                <ul>
                                    <li><strong>用户界面层</strong>：提供Web界面，支持用户交互</li>
                                    <li><strong>业务逻辑层</strong>：处理用户请求，协调各个子系统</li>
                                    <li><strong>仿真引擎</strong>：核心计算组件，执行仿真逻辑</li>
                                    <li><strong>数据存储层</strong>：管理配置数据和仿真结果</li>
                                    <li><strong>API网关</strong>：提供统一的对外接口</li>
                                </ul>
                                
                                <div class="warning">
                                    系统要求至少8GB内存和4核CPU才能获得最佳性能。对于大规模仿真，建议使用16GB或更高配置。
                                </div>
                            </div>
                        </div>
                    </div>
                    
                    <div class="help-footer">
                        <div>最后更新: 2023-10-15</div>
                        <a href="#" class="feedback-link">提交反馈</a>
                    </div>
                </div>
            </div>
        `;
    }

    setupEventListeners() {
        // 设置分类展开/折叠功能
        const categoryTitles = this.shadowRoot.querySelectorAll('.category-title');
        categoryTitles.forEach(title => {
            title.addEventListener('click', () => {
                title.classList.toggle('expanded');
                const items = title.nextElementSibling;
                items.classList.toggle('expanded');
            });
        });

        // 设置帮助项点击事件
        const helpItems = this.shadowRoot.querySelectorAll('.help-item');
        helpItems.forEach(item => {
            item.addEventListener('click', () => {
                // 移除所有活动状态
                helpItems.forEach(i => i.classList.remove('active'));
                // 添加活动状态到当前项
                item.classList.add('active');
                
                // 加载对应的帮助内容（实际项目中应该调用加载内容的方法）
                this.loadHelpContent(item.textContent);
            });
        });

        // 设置搜索功能
        const searchInput = this.shadowRoot.querySelector('.search-input');
        searchInput.addEventListener('input', () => {
            this.searchHelp(searchInput.value);
        });
    }

    loadHelpContent(topic) {
        console.log(`加载帮助内容: ${topic}`);
        // 在此处添加实际加载帮助内容的逻辑
    }

    searchHelp(keyword) {
        console.log(`搜索帮助: ${keyword}`);
        // 在此处添加实际搜索帮助内容的逻辑
    }
}

customElements.define('help-component', HelpComponent);