// 通用侧边栏组件的JavaScript逻辑

// 全局状态管理
let currentExpandedMenus = [];

// 获取当前页面路径信息
function getCurrentPageInfo() {
    const path = window.location.pathname;
    const filename = path.split('/').pop();
    
    // 根据文件名判断当前页面
    if (filename === 'index.html' || path.endsWith('/')) {
        return { section: 'home', page: 'home' };
    } else if (filename === 'data-center.html') {
        return { section: 'data-center', page: 'data-center' };
    } else if (filename === 'coupon-marketing.html') {
        return { section: 'coupon-marketing', page: 'coupon-marketing' };
    } else if (path.includes('/member/')) {
        if (filename === 'level-settings.html') {
            return { section: 'member', page: 'level-settings' };
        } else if (filename === 'level-detail.html') {
            return { section: 'member', page: 'level-detail' };
        } else if (filename === 'level-edit.html') {
            return { section: 'member', page: 'level-edit' };
        }
        return { section: 'member', page: 'unknown' };
    }
    
    return { section: 'unknown', page: 'unknown' };
}

// 菜单展开/收起功能
function toggleMenu(menuId) {
    const arrow = document.getElementById(menuId + '-arrow');
    const submenu = document.getElementById(menuId + '-submenu');
    
    if (currentExpandedMenus.includes(menuId)) {
        // 收起菜单
        currentExpandedMenus = currentExpandedMenus.filter(id => id !== menuId);
        
        if (arrow) {
            arrow.classList.remove('rotate-180');
        }
        
        if (submenu) {
            submenu.classList.add('hidden');
        }
    } else {
        // 展开菜单
        currentExpandedMenus.push(menuId);
        
        if (arrow) {
            arrow.classList.add('rotate-180');
        }
        
        if (submenu) {
            submenu.classList.remove('hidden');
            submenu.classList.add('fade-in');
        }
    }
    
    console.log('菜单状态更新:', menuId, currentExpandedMenus);
}

// 初始化菜单状态
function initializeSidebar() {
    const currentPage = getCurrentPageInfo();
    
    // 根据当前页面设置菜单状态
    if (currentPage.section === 'member') {
        // 会员管理菜单默认展开
        if (!currentExpandedMenus.includes('member')) {
            toggleMenu('member');
        }
        
        // 设置当前页面高亮
        highlightCurrentMenu(currentPage);
    } else if (currentPage.section === 'home') {
        // 主页高亮
        highlightCurrentMenu(currentPage);
        // 会员管理菜单默认展开
        if (!currentExpandedMenus.includes('member')) {
            toggleMenu('member');
        }
    } else {
        // 其他页面高亮对应菜单
        highlightCurrentMenu(currentPage);
    }
    
    console.log('侧边栏初始化完成，当前页面:', currentPage);
}

// 高亮当前菜单项
function highlightCurrentMenu(pageInfo) {
    // 清除所有高亮状态
    document.querySelectorAll('.menu-item').forEach(item => {
        item.classList.remove('text-blue-500');
        item.classList.add('text-gray-700');
    });
    
    // 根据页面信息高亮对应菜单
    let targetElement = null;
    
    if (pageInfo.section === 'home') {
        targetElement = document.querySelector('[data-menu="home"]');
    } else if (pageInfo.section === 'data-center') {
        targetElement = document.querySelector('[data-menu="data-center"]');
    } else if (pageInfo.section === 'coupon-marketing') {
        targetElement = document.querySelector('[data-menu="coupon-marketing"]');
    } else if (pageInfo.section === 'member') {
        if (pageInfo.page === 'level-settings' || pageInfo.page === 'level-detail' || pageInfo.page === 'level-edit') {
            targetElement = document.querySelector('[data-menu="level-settings"]');
        }
    }
    
    if (targetElement) {
        targetElement.classList.remove('text-gray-700', 'text-gray-600');
        targetElement.classList.add('text-blue-500');
    }
}

// 搜索功能
function initializeSidebarSearch() {
    const searchInput = document.querySelector('input[placeholder*="搜索"]');
    if (searchInput) {
        searchInput.addEventListener('input', function(e) {
            const searchTerm = e.target.value.toLowerCase();
            filterMenuItems(searchTerm);
        });
    }
}

// 过滤菜单项
function filterMenuItems(searchTerm) {
    const menuItems = document.querySelectorAll('nav div');
    
    menuItems.forEach(item => {
        const text = item.textContent.toLowerCase();
        if (text.includes(searchTerm) || searchTerm === '') {
            item.style.display = '';
        } else {
            item.style.display = 'none';
        }
    });
    
    console.log('搜索筛选:', searchTerm);
}

// 页面跳转函数
function navigateToPage(url) {
    window.location.href = url;
}

// 获取相对路径
function getRelativePath(targetPath) {
    const currentPath = window.location.pathname;
    const currentDir = currentPath.substring(0, currentPath.lastIndexOf('/'));
    
    // 判断当前是否在子目录中
    if (currentDir.includes('/pages')) {
        if (currentDir.includes('/member')) {
            // 在 member 子目录中
            return targetPath.startsWith('../../') ? targetPath : '../../' + targetPath;
        } else {
            // 在 pages 目录中
            return targetPath.startsWith('../') ? targetPath : '../' + targetPath;
        }
    }
    
    // 在根目录中
    return targetPath;
}

// 导出函数
window.toggleMenu = toggleMenu;
window.initializeSidebar = initializeSidebar;
window.initializeSidebarSearch = initializeSidebarSearch;
window.navigateToPage = navigateToPage;
window.getRelativePath = getRelativePath;