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

    // 添加getter方法
    get selectedProduct() {
        return this.shadowRoot.getElementById('productSelect').value;
    }

    render() {
        this.shadowRoot.innerHTML = `
            <style>
                :host {
                    display: flex;
                    align-items: center;
                    gap: 12px;
                    margin-left: auto;
                }

                .tool-item {
                    display: flex;
                    align-items: center;
                    justify-content: center;
                    width: 32px;
                    height: 32px;
                    border-radius: 4px;
                    cursor: pointer;
                    transition: background-color 0.2s;
                }

                .tool-item:hover {
                    background-color: rgba(0, 0, 0, 0.05);
                }

                .tool-item img {
                    width: 20px;
                    height: 20px;
                }

                .product-container {
                    display: flex;
                    align-items: center;
                    gap: 8px;
                }

                .product-label {
                    font-size: 14px;
                    color: #666;
                }

                .product-select {
                    min-width: 120px;
                    height: 32px;
                    padding: 0 8px;
                    border: 1px solid #e0e0e0;
                    border-radius: 4px;
                    background-color: white;
                    cursor: pointer;
                }

                .search-box {
                    display: flex;
                    align-items: center;
                    height: 32px;
                    border: 1px solid #e0e0e0;
                    border-radius: 4px;
                    background-color: white;
                    padding: 0 8px;
                    margin-left: 50px; /* 增加与下拉框的间距 */
                }

                .search-box input {
                    border: none;
                    outline: none;
                    padding: 0 8px;
                    width: 120px;
                }

                .search-box img {
                    width: 16px;
                    height: 16px;
                    opacity: 0.5;
                }
            </style>
            <div class="product-container">
                <span class="product-label">构型：</span>
                <select class="product-select" id="productSelect">
                    <option value="">选择构型</option>
                </select>
            </div>
            <div class="search-box">
                <input type="text" placeholder="搜索...">
                <img src="assets/icons/png/search_b.png" alt="搜索">
            </div>
            <div class="tool-item" id="fontSizeBtn" title="调整字体大小">
                <img src="assets/icons/png/font_b.png" alt="字体">
            </div>
            <div class="tool-item" id="themeBtn" title="调整主题">
                <img src="assets/icons/png/palette_b.png" alt="主题">
            </div>
            <div class="tool-item" id="notificationBtn" title="通知">
                <img src="assets/icons/png/bell_b.png" alt="通知">
            </div>
            <div class="tool-item" id="onlineUsersBtn" title="在线用户">
                <img src="assets/icons/png/users_b.png" alt="在线用户">
            </div>
        `;
    }

    addEventListeners() {
        // 加载构型列表
        this.loadProducts();

        // 字体大小调整
        this.shadowRoot.getElementById('fontSizeBtn').addEventListener('click', () => {
            this.dispatchEvent(new CustomEvent('font-size-click'));
        });

        // 主题调整
        this.shadowRoot.getElementById('themeBtn').addEventListener('click', () => {
            this.dispatchEvent(new CustomEvent('theme-click'));
        });

        // 通知
        this.shadowRoot.getElementById('notificationBtn').addEventListener('click', () => {
            this.dispatchEvent(new CustomEvent('notification-click'));
        });

        // 在线用户
        this.shadowRoot.getElementById('onlineUsersBtn').addEventListener('click', () => {
            this.dispatchEvent(new CustomEvent('online-users-click'));
        });

        // 构型选择
        this.shadowRoot.getElementById('productSelect').addEventListener('change', (e) => {
            this.dispatchEvent(new CustomEvent('product-change', {
                detail: { product: e.target.value }
            }));
        });
    }

    async loadProducts() {
        try {
            const response = await fetch('/api/products');
            if (!response.ok) {
                throw new Error('获取构型列表失败');
            }
            const products = await response.json();
            const select = this.shadowRoot.getElementById('productSelect');
            
            // 清空现有选项
            select.innerHTML = '<option value="">选择构型</option>';
            
            products.forEach(product => {
                const option = document.createElement('option');
                option.value = product.ProductName;
                option.textContent = product.ProductName;
                select.appendChild(option);
            });
        } catch (error) {
            console.error('加载构型列表失败:', error);
            // 可以在这里添加错误提示UI
        }
    }
}

customElements.define('header-tools', HeaderTools);