Add nested navigation groups

components/nav-menu.tsx

@@ -14,7 +14,8 @@ import {
   FiTag,
   FiServer,
   FiCpu,
-  FiList
+  FiList,
+  FiChevronDown
 } from 'react-icons/fi';
 import Link from 'next/link';
 
@@ -47,9 +48,10 @@ const ICON_MAP: Record<IconKey, any> = {
 
 export interface NavLinkItem {
   key: string;
-  href: string;
-  label?: string;
+  href?: string;
+  label: string;
   iconKey: IconKey;
+  children?: NavLinkItem[];
 }
 
 interface NavMenuProps {
@@ -62,6 +64,21 @@ export function NavMenu({ items }: NavMenuProps) {
   const toggle = () => setOpen((val) => !val);
   const close = () => setOpen(false);
 
+  const renderChild = (item: NavLinkItem) => {
+    const Icon = ICON_MAP[item.iconKey] ?? FiFile;
+    return item.href ? (
+      <Link
+        key={item.key}
+        href={item.href}
+        className="motion-link inline-flex items-center gap-2 rounded-xl px-3 py-2 text-sm text-slate-600 hover:bg-slate-100 hover:text-accent focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent/40 dark:text-slate-200 dark:hover:bg-slate-800"
+        onClick={close}
+      >
+        <Icon className="h-4 w-4 text-slate-400" />
+        <span>{item.label}</span>
+      </Link>
+    ) : null;
+  };
+
   return (
     <div className="flex items-center gap-3">
       <button
@@ -76,21 +93,49 @@ export function NavMenu({ items }: NavMenuProps) {
       <nav
         className={`${open ? 'flex' : 'hidden'} flex-col gap-2 sm:flex sm:flex-row sm:items-center sm:gap-3`}
       >
-        {items.map((item) => (
+        {items.map((item) => {
+          const Icon = ICON_MAP[item.iconKey] ?? FiFile;
+
+          if (item.children && item.children.length > 0) {
+            return (
+              <div key={item.key} className="group relative">
+                <button
+                  type="button"
+                  className="motion-link type-nav inline-flex items-center gap-1.5 rounded-full px-3 py-1 text-slate-600 hover:text-accent focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent/40 dark:text-slate-200"
+                >
+                  <Icon className="h-3.5 w-3.5 text-slate-400 transition group-hover:text-accent" />
+                  <span>{item.label}</span>
+                  <FiChevronDown className="h-3 w-3 text-slate-400 transition group-hover:text-accent" />
+                </button>
+
+                {/* Desktop dropdown */}
+                <div className="pointer-events-none absolute left-0 top-full hidden min-w-[12rem] translate-y-1 rounded-2xl border border-slate-200 bg-white p-2 opacity-0 shadow-lg transition duration-200 ease-snappy group-hover:pointer-events-auto group-hover:translate-y-2 group-hover:opacity-100 dark:border-slate-800 dark:bg-slate-900 sm:block">
+                  <div className="flex flex-col gap-1">
+                    {item.children.map((child) => renderChild(child))}
+                  </div>
+                </div>
+
+                {/* Mobile inline list */}
+                <div className="sm:hidden ml-3 mt-1 flex flex-col gap-1">
+                  {item.children.map((child) => renderChild(child))}
+                </div>
+              </div>
+            );
+          }
+
+          return item.href ? (
             <Link
               key={item.key}
               href={item.href}
               className="motion-link type-nav group relative inline-flex items-center gap-1.5 rounded-full px-3 py-1 text-slate-600 hover:text-accent focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-accent/40 dark:text-slate-200"
               onClick={close}
             >
-            {(() => {
-              const Icon = ICON_MAP[item.iconKey] ?? FiFile;
-              return <Icon className="h-3.5 w-3.5 text-slate-400 transition group-hover:text-accent" />;
-            })()}
+              <Icon className="h-3.5 w-3.5 text-slate-400 transition group-hover:text-accent" />
               <span>{item.label}</span>
               <span className="absolute inset-x-3 -bottom-0.5 h-px origin-left scale-x-0 bg-accent transition duration-180 ease-snappy group-hover:scale-x-100" aria-hidden="true" />
             </Link>
-        ))}
+          ) : null;
+        })}
       </nav>
     </div>
   );

components/site-header.tsx

@@ -21,15 +21,56 @@ export function SiteHeader() {
     .slice()
     .sort((a, b) => (a.title || '').localeCompare(b.title || ''));
 
-  const navItems: NavLinkItem[] = [
-    { key: 'home', href: '/', label: '首頁', iconKey: 'home' },
-    { key: 'blog', href: '/blog', label: 'Blog', iconKey: 'blog' },
-    ...pages.map((page) => ({
+  const findPage = (title: string) => pages.find((page) => page.title === title);
+
+  const aboutChildren = [
+    { title: '關於作者', label: '作者' },
+    { title: '關於本站', label: '本站' }
+  ]
+    .map(({ title, label }) => {
+      const page = findPage(title);
+      if (!page) return null;
+      return {
         key: page._id,
         href: page.url,
-      label: page.title,
+        label,
         iconKey: getIconForPage(page.title, page.slug)
-    }))
+      } satisfies NavLinkItem;
+    })
+    .filter(Boolean) as NavLinkItem[];
+
+  const deviceChildren = [
+    { title: '開發工作環境', label: '開發環境' },
+    { title: 'HomeLab', label: 'HomeLab' }
+  ]
+    .map(({ title, label }) => {
+      const page = findPage(title);
+      if (!page) return null;
+      return {
+        key: page._id,
+        href: page.url,
+        label,
+        iconKey: getIconForPage(page.title, page.slug)
+      } satisfies NavLinkItem;
+    })
+    .filter(Boolean) as NavLinkItem[];
+
+  const navItems: NavLinkItem[] = [
+    { key: 'home', href: '/', label: '首頁', iconKey: 'home' },
+    {
+      key: 'about',
+      href: aboutChildren[0]?.href,
+      label: '關於',
+      iconKey: 'user',
+      children: aboutChildren
+    },
+    {
+      key: 'devices',
+      href: deviceChildren[0]?.href,
+      label: '裝置',
+      iconKey: 'device',
+      children: deviceChildren
+    }
   ];
 
   return (

next-env.d.ts

@@ -1,6 +1,6 @@
 /// <reference types="next" />
 /// <reference types="next/image-types/global" />
-import "./.next/dev/types/routes.d.ts";
+import "./.next/types/routes.d.ts";
 
 // NOTE: This file should not be edited
 // see https://nextjs.org/docs/app/api-reference/config/typescript for more information.