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

    connectedCallback() {
        this.render();
        this.addEventListeners();
        this.checkLoginStatus();
    }

    render() {
        this.shadowRoot.innerHTML = `
            <style>
                .user-dropdown {
                    height: 100%;
                    position: relative;
                    border-left: 1px solid #e0e0e0;
                }

                .user-dropdown-toggle {
                    height: 100%;
                    display: flex;
                    align-items: center;
                    padding: 0 20px;
                    cursor: pointer;
                    transition: background-color 0.3s;
                    gap: 10px;
                    position: relative;
                }

                .user-dropdown-toggle:hover {
                    background-color: #f5f5f5;
                }

                .user-dropdown-toggle img.icon-small {
                    width: 12px;
                    height: 12px;
                    opacity: 0.5;
                }

                .user-dropdown-toggle img:not(.icon-small) {
                    width: 32px;
                    height: 32px;
                    border-radius: 50%;
                }

                .user-dropdown-toggle span {
                    font-size: 17px;
                    color: #333;
                    font-weight: 500;
                }

                .user-icon {
                    width: 24px;
                    height: 24px;
                    margin-right: 0;
                    vertical-align: middle;
                    cursor: help;
                }

                .user-icon-wrapper {
                    position: relative;
                    display: inline-block;
                    z-index: 1002;
                    padding: 0;
                    margin: 0;
                }

                .icon-small {
                    width: 12px;
                    height: 12px;
                    opacity: 0.7;
                }

                .user-dropdown-menu {
                    position: absolute;
                    top: 100%;
                    right: 0;
                    background: white;
                    border: 1px solid #e0e0e0;
                    border-radius: 4px;
                    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
                    display: none;
                    z-index: 1000;
                    min-width: 150px;
                    max-width: 250px;
                    white-space: nowrap;
                    overflow: hidden;
                }

                .user-dropdown.active .user-dropdown-menu {
                    display: block;
                }

                .dropdown-item {
                    display: flex;
                    align-items: center;
                    padding: 8px 16px;
                    cursor: pointer;
                    transition: background-color 0.3s;
                    gap: 8px;
                    white-space: nowrap;
                    overflow: hidden;
                    text-overflow: ellipsis;
                }

                .dropdown-item:hover {
                    background-color: #f5f5f5;
                }

                .dropdown-item .icon-small {
                    width: 16px;
                    height: 16px;
                    opacity: 0.7;
                }

                .dropdown-divider {
                    height: 1px;
                    background-color: #e0e0e0;
                    margin: 4px 0;
                }

                .tooltip {
                    position: absolute;
                    background: rgba(0, 0, 0, 0.8);
                    color: white;
                    padding: 8px 12px;
                    border-radius: 4px;
                    font-size: 13px;
                    visibility: hidden;
                    opacity: 0;
                    transition: opacity 0.3s;
                    top: 100%;
                    left: 50%;
                    transform: translateX(-50%);
                    margin-top: 8px;
                    z-index: 1001;
                    min-width: 200px;
                    text-align: left;
                    line-height: 1.4;
                    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
                }

                .tooltip.right-aligned {
                    left: auto;
                    right: 0;
                    transform: none;
                    margin: 8px 0 0 0;
                    padding: 8px 12px 8px 12px;
                }

                .tooltip .info-row {
                    margin: 2px 0;
                    display: flex;
                    align-items: center;
                    gap: 8px;
                    white-space: nowrap;
                }

                .tooltip .label {
                    color: #a8c8ff;
                    flex-shrink: 0;
                    min-width: 70px;
                }

                .tooltip .value {
                    color: #ffffff;
                    flex: 1;
                    white-space: nowrap;
                }

                .user-icon-wrapper:hover .tooltip {
                    visibility: visible;
                    opacity: 1;
                }

                .tooltip::before {
                    content: '';
                    position: absolute;
                    bottom: 100%;
                    left: 50%;
                    transform: translateX(-50%);
                    border-width: 0 5px 5px 5px;
                    border-style: solid;
                    border-color: transparent transparent rgba(0, 0, 0, 0.8) transparent;
                }

                .dropdown-item span {
                    overflow: hidden;
                    text-overflow: ellipsis;
                }
            </style>
            <div class="user-dropdown">
                <div class="user-dropdown-toggle">
                    <div class="user-icon-wrapper">
                        <img id="userIcon" src="assets/icons/png/user.png" alt="用户" class="user-icon">
                        <div class="tooltip" id="userTooltip">用户信息加载中...</div>
                    </div>
                    <span id="userName">用户名</span>
                    <img src="assets/icons/png/chevron-down_b.png" alt="展开" class="icon-small">
                </div>
                <div class="user-dropdown-menu">
                    <div class="dropdown-item" data-action="profile">
                        <img src="assets/icons/png/user_b.png" alt="个人中心" class="icon-small">
                        个人中心
                    </div>
                    <div class="dropdown-item admin-only" data-action="users">
                        <img src="assets/icons/png/users_b.png" alt="用户管理" class="icon-small">
                        用户管理
                    </div>
                    <div class="dropdown-divider"></div>
                    <div class="dropdown-item" data-action="logout">
                        <img src="assets/icons/png/logout_b.png" alt="退出登录" class="icon-small">
                        退出登录
                    </div>
                </div>
            </div>
        `;
    }

    addEventListeners() {
        const userDropdown = this.shadowRoot.querySelector('.user-dropdown');
        const userDropdownToggle = this.shadowRoot.querySelector('.user-dropdown-toggle');
        const userIconWrapper = this.shadowRoot.querySelector('.user-icon-wrapper');
        
        // 点击切换下拉菜单
        userDropdownToggle.addEventListener('click', (e) => {
            e.stopPropagation();
            userDropdown.classList.toggle('active');
        });

        // 点击其他地方关闭下拉菜单
        document.addEventListener('click', () => {
            userDropdown.classList.remove('active');
        });

        // 处理下拉菜单项点击
        const dropdownItems = this.shadowRoot.querySelectorAll('.dropdown-item');
        dropdownItems.forEach(item => {
            item.addEventListener('click', (e) => {
                e.stopPropagation();
                const action = item.getAttribute('data-action');
                this.handleDropdownAction(action);
                userDropdown.classList.remove('active');
            });
        });

        // 处理tooltip的定位
        userIconWrapper.addEventListener('mouseenter', () => {
            const tooltip = this.shadowRoot.querySelector('.tooltip');
            const rect = userIconWrapper.getBoundingClientRect();
            const tooltipRect = tooltip.getBoundingClientRect();
            
            // 检查右边界
            if (rect.left + tooltipRect.width > window.innerWidth) {
                // 计算tooltip应该距离右边界的位置
                const rightEdge = window.innerWidth;
                const tooltipWidth = tooltipRect.width;
                tooltip.style.position = 'fixed';
                tooltip.style.left = 'auto';
                tooltip.style.right = '0';
                tooltip.style.transform = 'none';
                tooltip.style.margin = '0';
                tooltip.style.top = `${rect.bottom + 8}px`;
            } else {
                tooltip.style.position = 'absolute';
                tooltip.style.left = '50%';
                tooltip.style.right = 'auto';
                tooltip.style.transform = 'translateX(-50%)';
                tooltip.style.margin = '8px 0 0 0';
                tooltip.style.top = '100%';
            }
        });
    }

    handleDropdownAction(action) {
        switch(action) {
            case 'profile':
                this.dispatchEvent(new CustomEvent('menu-action', {
                    detail: { action: 'profile' },
                    bubbles: true,
                    composed: true
                }));
                break;
            case 'users':
                this.dispatchEvent(new CustomEvent('menu-action', {
                    detail: { action: 'users' },
                    bubbles: true,
                    composed: true
                }));
                break;
            case 'logout':
                this.logout();
                break;
        }
    }

    async checkLoginStatus() {
        try {
            const response = await fetch('/api/check-auth', {
                credentials: 'include'
            });
            const result = await response.json();
            
            if (result.success) {
                this.updateUserInfo(result.user);
            } else {
                document.getElementById('authContainer').style.display = 'block';
                document.getElementById('mainContainer').style.display = 'none';
            }
        } catch (error) {
            console.error('获取用户信息失败:', error);
            document.getElementById('authContainer').style.display = 'block';
            document.getElementById('mainContainer').style.display = 'none';
        }
    }

    updateUserInfo(userInfo) {
        // 设置用户名
        this.shadowRoot.getElementById('userName').textContent = userInfo.username;

        // 设置用户图标和tooltip信息
        const userIcon = this.shadowRoot.getElementById('userIcon');
        const userTooltip = this.shadowRoot.getElementById('userTooltip');
        
        // 使用用户自定义图标
        if (userInfo.icon && userInfo.icon.trim() !== '') {
            const base64Data = userInfo.icon.trim();
            
            // 检查Base64数据是否有效且看起来像图片数据
            if (base64Data.length > 100 && 
                /^[A-Za-z0-9+/]*={0,2}$/.test(base64Data)) {
                
                // 根据Base64数据开头判断图片格式
                let mimeType = 'image/jpeg'; // 默认
                if (base64Data.startsWith('iVBORw0KGgo')) {
                    mimeType = 'image/png';
                } else if (base64Data.startsWith('R0lGODlh')) {
                    mimeType = 'image/gif';
                } else if (base64Data.startsWith('UklGR')) {
                    mimeType = 'image/webp';
                }
                
                userIcon.src = `data:${mimeType};base64,${base64Data}`;
            } else {
                console.warn('无效的图片Base64数据格式，使用默认头像');
                userIcon.src = 'assets/icons/png/user_b.png';
            }
        } else {
            // 如果没有自定义图标，使用默认用户图标
            userIcon.src = 'assets/icons/png/user_b.png';
        }
        userIcon.alt = userInfo.username;
        
        // 添加图片加载错误处理
        userIcon.onerror = () => {
            console.warn('用户头像加载失败，使用默认头像');
            console.warn('尝试加载的URL:', userIcon.src);
            userIcon.src = 'assets/icons/png/user_b.png';
        };
        
        // 构建HTML内容
        const tooltipContent = `
            <div class="info-row">
                <span class="label">用户名</span>
                <span class="value">${userInfo.username || '未设置'}</span>
            </div>
            <div class="info-row">
                <span class="label">真实姓名</span>
                <span class="value">${userInfo.full_name || '未设置'}</span>
            </div>
            <div class="info-row">
                <span class="label">权限级别</span>
                <span class="value">${this.getAccessLevelName(userInfo.access_level)}</span>
            </div>
            <div class="info-row">
                <span class="label">所属部门</span>
                <span class="value">${userInfo.department || '未设置'}</span>
            </div>
            <div class="info-row">
                <span class="label">职位</span>
                <span class="value">${userInfo.position || '未设置'}</span>
            </div>
            <div class="info-row">
                <span class="label">电子邮箱</span>
                <span class="value">${userInfo.email || '未设置'}</span>
            </div>
            <div class="info-row">
                <span class="label">联系电话</span>
                <span class="value">${userInfo.phone || '未设置'}</span>
            </div>
        `;
        
        userTooltip.innerHTML = tooltipContent;

        // 控制用户管理选项的显示
        const userManagementItem = this.shadowRoot.querySelector('.admin-only');
        if (userManagementItem) {
            userManagementItem.style.display = parseInt(userInfo.access_level) >= 3 ? 'flex' : 'none';
        }
    }

    getAccessLevelName(accessLevel) {
        const level = parseInt(accessLevel);
        switch(level) {
            case 1: return '普通用户';
            case 2: return '开发者';
            case 3: return '组长';
            case 4: return '管理员';
            default: return '访客';
        }
    }

    async logout() {
        try {
            const response = await fetch('/api/logout', {
                method: 'POST',
                credentials: 'include'
            });
            
            if (response.ok) {
                // 获取认证容器和主容器
                const authContainer = document.getElementById('authContainer');
                const mainContainer = document.getElementById('mainContainer');
                
                // 先隐藏主容器
                mainContainer.classList.remove('visible');
                // 等待过渡效果完成
                setTimeout(() => {
                    location.reload();

                    mainContainer.style.display = 'none';
                    // 显示认证容器
                    authContainer.style.display = 'block';
                    // 等待一帧以确保display:block生效
                    requestAnimationFrame(() => {
                        authContainer.classList.add('visible');
                        // 重置认证组件
                        const authComponent = document.querySelector('auth-component');
                        if (authComponent) {
                            authComponent.reset();
                        }
                    });
                }, 300);
            } else {
                console.error('登出失败');
            }
        } catch (error) {
            console.error('登出错误:', error);
        }
    }
}

customElements.define('user-info', UserInfo);