(() => {
  // 展开/收起子菜单
  document.querySelectorAll('.nav-item.has-children').forEach(group => {
    const btn = group.querySelector('.nav-item-btn');
    const caret = btn.querySelector('.caret');
    const children = group.querySelector('.nav-children');
    btn.addEventListener('click', () => {
      children.classList.toggle('open');
      caret.classList.toggle('rotate');
    });
  });

  // 侧边栏折叠功能
  const sidebar = document.getElementById('sidebar');
  const toggleBtn = document.getElementById('sidebar-toggle');
  
  if (sidebar && toggleBtn) {
    // 从 localStorage 恢复状态
    const isCollapsed = localStorage.getItem('sidebar-collapsed') === 'true';
    if (isCollapsed) {
      sidebar.classList.add('collapsed');
    }

    toggleBtn.addEventListener('click', () => {
      sidebar.classList.toggle('collapsed');
      const collapsed = sidebar.classList.contains('collapsed');
      localStorage.setItem('sidebar-collapsed', collapsed);
      toggleBtn.title = collapsed ? '展开菜单' : '收起菜单';
      
      // 触发窗口 resize 事件，让图表立即重绘
      setTimeout(() => {
        window.dispatchEvent(new Event('resize'));
      }, 310); // 等待侧边栏动画完成 (300ms)
    });

    // 设置初始 title
    toggleBtn.title = sidebar.classList.contains('collapsed') ? '展开菜单' : '收起菜单';
  }

  // 二级菜单点击时自动缩进侧边栏功能
  // 检查是否启用了此功能（默认启用）
  const autoCollapseOnSubmenu = localStorage.getItem('sidebar-auto-collapse') !== 'false';
  
  if (autoCollapseOnSubmenu) {
    const dropdownItems = document.querySelectorAll('.dropdown-item');
    dropdownItems.forEach(item => {
      item.addEventListener('click', () => {
        // 延迟执行，确保路由跳转完成后再缩进
        setTimeout(() => {
          if (sidebar && !sidebar.classList.contains('collapsed')) {
            sidebar.classList.add('collapsed');
            localStorage.setItem('sidebar-collapsed', 'true');
            if (toggleBtn) {
              toggleBtn.title = '展开菜单';
            }
            
            // 触发窗口 resize 事件，让图表立即重绘
            setTimeout(() => {
              window.dispatchEvent(new Event('resize'));
            }, 310);
          }
        }, 100);
      });
    });
  }

  // 添加键盘快捷键切换功能
  document.addEventListener('keydown', (e) => {
    // Ctrl + B 切换侧边栏
    if (e.ctrlKey && e.key === 'b') {
      e.preventDefault();
      if (sidebar && toggleBtn) {
        toggleBtn.click();
      }
    }
  });
})();