Enhance authentication flow by implementing ProtectedRoute component across various pages, ensuring users are redirected based on their authentication status. Update login page to support Google sign-in and handle redirect URLs after login. Modify analytics and links pages to include loading indicators and protected access. Update next.config.ts to enable middleware for edge functions.

middleware.ts

@@ -0,0 +1,69 @@
+import { NextResponse } from 'next/server';
+import type { NextRequest } from 'next/server';
+
+export function middleware(request: NextRequest) {
+  // 获取请求的路径
+  const path = request.nextUrl.pathname;
+  console.log(`[Middleware] 请求路径: ${path}`);
+  
+  // 定义不需要验证的路径
+  const publicPaths = ['/login', '/register', '/auth/callback'];
+  
+  // API 路由不需要验证
+  if (path.startsWith('/api/')) {
+    console.log('[Middleware] API路由，跳过验证');
+    return NextResponse.next();
+  }
+
+  // 静态资源不需要验证
+  if (path.includes('/_next/') || path.includes('/static/') || path.match(/\.(ico|png|jpg|jpeg|svg|css|js)$/)) {
+    console.log('[Middleware] 静态资源，跳过验证');
+    return NextResponse.next();
+  }
+  
+  // 检查是否是公开路径
+  const isPublicPath = publicPaths.some(publicPath => path === publicPath || path.startsWith(publicPath));
+  console.log(`[Middleware] 是公开路径: ${isPublicPath}`);
+
+  // 获取所有 cookie
+  const allCookies = Object.fromEntries(request.cookies.getAll().map(c => [c.name, c.value]));
+  console.log('[Middleware] 所有Cookie:', JSON.stringify(allCookies));
+
+  // 检查用户是否登录
+  const supabaseCookie = request.cookies.get('sb-access-token') || 
+                         request.cookies.get('sb-refresh-token') || 
+                         request.cookies.get('sb-provider-token') || 
+                         request.cookies.get('supabase-auth-token');
+  const isLoggedIn = !!supabaseCookie;
+  console.log(`[Middleware] 用户是否登录: ${isLoggedIn}`);
+
+  // 如果是公开路径但已登录，重定向到首页
+  if (isPublicPath && isLoggedIn) {
+    console.log('[Middleware] 已登录用户访问公开路径，重定向到首页');
+    return NextResponse.redirect(new URL('/', request.url));
+  }
+
+  // 如果不是公开路径且未登录，重定向到登录页
+  if (!isPublicPath && !isLoggedIn) {
+    console.log('[Middleware] 未登录用户访问私有路径，重定向到登录页');
+    const redirectUrl = new URL('/login', request.url);
+    redirectUrl.searchParams.set('redirect', encodeURIComponent(request.url));
+    return NextResponse.redirect(redirectUrl);
+  }
+
+  console.log('[Middleware] 通过验证，允许访问');
+  return NextResponse.next();
+}
+
+// 配置中间件匹配的路径
+export const config = {
+  matcher: [
+    // 匹配所有路径，但排除静态资源
+    '/((?!_next/static|_next/image|favicon.ico).*)',
+    // 明确包括重要的路由
+    '/', 
+    '/analytics', 
+    '/links',
+    '/create-shorturl',
+  ],
+};