feat: integrate SEO hook for dynamic metadata management

- Removed hardcoded canonical link from index.html.
- Implemented useSEO hook in layout.tsx to dynamically update SEO metadata including title, description, and canonical URL based on the current route.
- Added new use-seo.ts file containing the SEO hook logic for improved search engine optimization.

index.html

@@ -13,7 +13,6 @@
     
     <!-- Favicon -->
     <link rel="icon" type="image/svg+xml" href="/lite.svg" />
-    <link rel="canonical" href="https://litek.typist.cc/" />
     
     <!-- Open Graph / Facebook -->
     <meta property="og:type" content="website" />

src/hooks/use-seo.ts

@@ -0,0 +1,96 @@
+import { useEffect } from 'react';
+import { useLocation } from 'react-router-dom';
+
+interface UseSEOOptions {
+  title?: string;
+  description?: string;
+  baseUrl?: string;
+}
+
+/**
+ * SEO Hook - 动态更新页面 SEO 元数据
+ * 
+ * @param options - SEO 配置选项
+ * @param options.title - 页面标题（可选）
+ * @param options.description - 页面描述（可选）
+ * @param options.baseUrl - 网站基础 URL，默认为 https://litek.typist.cc
+ * 
+ * @example
+ * ```tsx
+ * // 在组件中使用
+ * useSEO({
+ *   title: 'UUID Generator',
+ *   description: 'Free online UUID generator tool'
+ * });
+ * ```
+ */
+export const useSEO = (options: UseSEOOptions = {}) => {
+  const location = useLocation();
+  const { 
+    title, 
+    description, 
+    baseUrl = 'https://litek.typist.cc' 
+  } = options;
+
+  useEffect(() => {
+    // 构建当前页面的完整 URL
+    const canonicalUrl = `${baseUrl}${location.pathname}`;
+    
+    // 更新或创建 canonical 链接
+    let canonical = document.querySelector('link[rel="canonical"]') as HTMLLinkElement;
+    if (!canonical) {
+      canonical = document.createElement('link');
+      canonical.setAttribute('rel', 'canonical');
+      document.head.appendChild(canonical);
+    }
+    canonical.setAttribute('href', canonicalUrl);
+
+    // 更新页面标题
+    if (title) {
+      document.title = `${title} - Lite Kit`;
+    }
+
+    // 更新 meta description
+    if (description) {
+      let metaDescription = document.querySelector('meta[name="description"]') as HTMLMetaElement;
+      if (metaDescription) {
+        metaDescription.setAttribute('content', description);
+      }
+    }
+
+    // 更新 Open Graph URL
+    let ogUrl = document.querySelector('meta[property="og:url"]') as HTMLMetaElement;
+    if (ogUrl) {
+      ogUrl.setAttribute('content', canonicalUrl);
+    }
+
+    // 更新 Open Graph Title
+    if (title) {
+      let ogTitle = document.querySelector('meta[property="og:title"]') as HTMLMetaElement;
+      if (ogTitle) {
+        ogTitle.setAttribute('content', `${title} - Lite Kit`);
+      }
+
+      // 更新 Twitter Card Title
+      let twitterTitle = document.querySelector('meta[name="twitter:title"]') as HTMLMetaElement;
+      if (twitterTitle) {
+        twitterTitle.setAttribute('content', `${title} - Lite Kit`);
+      }
+    }
+
+    // 更新 Open Graph Description
+    if (description) {
+      let ogDescription = document.querySelector('meta[property="og:description"]') as HTMLMetaElement;
+      if (ogDescription) {
+        ogDescription.setAttribute('content', description);
+      }
+
+      // 更新 Twitter Card Description
+      let twitterDescription = document.querySelector('meta[name="twitter:description"]') as HTMLMetaElement;
+      if (twitterDescription) {
+        twitterDescription.setAttribute('content', description);
+      }
+    }
+  }, [location.pathname, title, description, baseUrl]);
+};
+

src/layout.tsx

@@ -4,20 +4,26 @@ import { Outlet } from "react-router-dom";
 import { ThemeProvider } from "@/components/theme/provider"
 import { SidebarProvider, SidebarTrigger } from "@/components/ui/sidebar"
 import { AppSidebar } from "@/components/sidebar";
+import { useSEO } from "@/hooks/use-seo";
 
-export const Layout: FC = () => (
-  <ThemeProvider defaultTheme="dark" storageKey="vite-ui-theme">
-    <SidebarProvider>
-      <AppSidebar />
-      <div className="p-4 flex flex-col w-full h-[100vh] overflow-hidden">
-        <nav className="flex items-center justify-between">
-          <SidebarTrigger className="size-10" />
-          <div role="actions" />
-        </nav>
-        <main className="flex-1 overflow-auto p-4 overflow-hidden">
-          <Outlet />
-        </main>
-      </div>
-    </SidebarProvider>
-  </ThemeProvider>
-);
+export const Layout: FC = () => {
+  // 使用 SEO hook 自动更新 canonical URL 和其他 SEO 元数据
+  useSEO();
+
+  return (
+    <ThemeProvider defaultTheme="dark" storageKey="vite-ui-theme">
+      <SidebarProvider>
+        <AppSidebar />
+        <div className="p-4 flex flex-col w-full h-[100vh] overflow-hidden">
+          <nav className="flex items-center justify-between">
+            <SidebarTrigger className="size-10" />
+            <div role="actions" />
+          </nav>
+          <main className="flex-1 overflow-auto p-4 overflow-hidden">
+            <Outlet />
+          </main>
+        </div>
+      </SidebarProvider>
+    </ThemeProvider>
+  );
+};