Next app router improvements

apps/nextjs-app/e2e/tests/auth.setup.ts

@@ -28,7 +28,7 @@ setup('authenticate', async ({ page }) => {
   // log out:
   await page.getByRole('button', { name: 'Open user menu' }).click();
   await page.getByRole('menuitem', { name: 'Sign Out' }).click();
-  await page.waitForURL('/auth/login?redirectTo=%252Fapp');
+  await page.waitForURL('/auth/login?redirectTo=%2Fapp');
 
   // log in:
   await page.getByLabel('Email Address').click();

apps/nextjs-app/mock-server.ts

@@ -16,7 +16,19 @@ app.use(
 );
 
 app.use(express.json());
-app.use(logger({ level: 'silent' }));
+app.use(
+  logger({
+    level: 'info',
+    redact: ['req.headers', 'res.headers'],
+    transport: {
+      target: 'pino-pretty',
+      options: {
+        colorize: true,
+        translateTime: true,
+      },
+    },
+  }),
+);
 app.use(createMiddleware(...handlers));
 
 initializeDb().then(() => {

apps/nextjs-app/package.json

@@ -42,7 +42,6 @@
     "react-dom": "^18.3.1",
     "react-error-boundary": "^4.0.13",
     "react-hook-form": "^7.51.3",
-    "react-query-auth": "^2.3.0",
     "tailwind-merge": "^2.3.0",
     "tailwindcss-animate": "^1.0.7",
     "zod": "^3.23.4",
@@ -109,7 +108,7 @@
     "tsx": "^4.17.0",
     "typescript": "^5.4.5",
     "vite-tsconfig-paths": "^4.3.2",
-    "vitest": "^1.5.2"
+    "vitest": "^2.1.4"
   },
   "msw": {
     "workerDirectory": "public"

apps/nextjs-app/src/app/app/_components/dashboard-info.tsx

@@ -0,0 +1,34 @@
+'use client';
+
+import { useUser } from '@/lib/auth';
+
+export const DashboardInfo = () => {
+  const user = useUser();
+
+  return (
+    <>
+      <h1 className="text-xl">
+        Welcome <b>{`${user.data?.firstName} ${user.data?.lastName}`}</b>
+      </h1>
+      <h4 className="my-3">
+        Your role is : <b>{user.data?.role}</b>
+      </h4>
+      <p className="font-medium">In this application you can:</p>
+      {user.data?.role === 'USER' && (
+        <ul className="my-4 list-inside list-disc">
+          <li>Create comments in discussions</li>
+          <li>Delete own comments</li>
+        </ul>
+      )}
+      {user.data?.role === 'ADMIN' && (
+        <ul className="my-4 list-inside list-disc">
+          <li>Create discussions</li>
+          <li>Edit discussions</li>
+          <li>Delete discussions</li>
+          <li>Comment on discussions</li>
+          <li>Delete all comments</li>
+        </ul>
+      )}
+    </>
+  );
+};

apps/nextjs-app/src/components/layouts/dashboard-layout.tsx → apps/nextjs-app/src/app/app/_components/dashboard-layout.tsx

@@ -3,25 +3,21 @@
 import { Home, PanelLeft, Folder, Users, User2 } from 'lucide-react';
 import NextLink from 'next/link';
 import { useRouter, usePathname } from 'next/navigation';
-import { Suspense } from 'react';
 import { ErrorBoundary } from 'react-error-boundary';
 
 import { Button } from '@/components/ui/button';
 import { Drawer, DrawerContent, DrawerTrigger } from '@/components/ui/drawer';
-import { Spinner } from '@/components/ui/spinner';
-import { paths } from '@/config/paths';
-import { AuthLoader, useLogout } from '@/lib/auth';
-import { ROLES, useAuthorization } from '@/lib/authorization';
-import { cn } from '@/utils/cn';
-
 import {
   DropdownMenu,
   DropdownMenuContent,
   DropdownMenuItem,
   DropdownMenuSeparator,
   DropdownMenuTrigger,
-} from '../ui/dropdown';
-import { Link } from '../ui/link';
+} from '@/components/ui/dropdown';
+import { Link } from '@/components/ui/link';
+import { paths } from '@/config/paths';
+import { useLogout, useUser } from '@/lib/auth';
+import { cn } from '@/utils/cn';
 
 type SideNavigationItem = {
   name: string;
@@ -41,14 +37,16 @@ const Logo = () => {
 };
 
 const Layout = ({ children }: { children: React.ReactNode }) => {
-  const logout = useLogout();
-  const { checkAccess } = useAuthorization();
+  const user = useUser();
   const pathname = usePathname();
   const router = useRouter();
+  const logout = useLogout({
+    onSuccess: () => router.push(paths.auth.login.getHref(pathname)),
+  });
   const navigation = [
     { name: 'Dashboard', to: paths.app.root.getHref(), icon: Home },
     { name: 'Discussions', to: paths.app.discussions.getHref(), icon: Folder },
-    checkAccess({ allowedRoles: [ROLES.ADMIN] }) && {
+    user.data?.role === 'ADMIN' && {
       name: 'Users',
       to: paths.app.users.getHref(),
       icon: Users,
@@ -152,7 +150,7 @@ const Layout = ({ children }: { children: React.ReactNode }) => {
               <DropdownMenuSeparator />
               <DropdownMenuItem
                 className={cn('block px-4 py-2 text-sm text-gray-700 w-full')}
-                onClick={() => logout.mutate({})}
+                onClick={() => logout.mutate()}
               >
                 Sign Out
               </DropdownMenuItem>
@@ -167,6 +165,10 @@ const Layout = ({ children }: { children: React.ReactNode }) => {
   );
 };
 
+function Fallback({ error }: { error: Error }) {
+  return <p>Error: {error.message ?? 'Something went wrong!'}</p>;
+}
+
 export const DashboardLayout = ({
   children,
 }: {
@@ -175,28 +177,9 @@ export const DashboardLayout = ({
   const pathname = usePathname();
   return (
     <Layout>
-      <Suspense
-        fallback={
-          <div className="flex size-full items-center justify-center">
-            <Spinner size="xl" />
-          </div>
-        }
-      >
-        <ErrorBoundary
-          key={pathname}
-          fallback={<div>Something went wrong!</div>}
-        >
-          <AuthLoader
-            renderLoading={() => (
-              <div className="flex size-full items-center justify-center">
-                <Spinner size="xl" />
-              </div>
-            )}
-          >
-            {children}
-          </AuthLoader>
-        </ErrorBoundary>
-      </Suspense>
+      <ErrorBoundary key={pathname} FallbackComponent={Fallback}>
+        {children}
+      </ErrorBoundary>
     </Layout>
   );
 };

apps/nextjs-app/src/app/app/discussions/[discussionId]/__tests__/discussion.test.tsx

@@ -11,7 +11,7 @@ import {
   waitForLoadingToFinish,
 } from '@/testing/test-utils';
 
-import DiscussionPage from '../page';
+import { Discussion } from '../_components/discussion';
 
 vi.mock('next/navigation', async () => {
   const actual = await vi.importActual('next/navigation');
@@ -33,11 +33,14 @@ const renderDiscussion = async () => {
 
   vi.mocked(useParams).mockReturnValue({ discussionId: fakeDiscussion.id });
 
-  const utils = await renderApp(<DiscussionPage />, {
-    user: fakeUser,
-    path: `/app/discussions/:discussionId`,
-    url: `/app/discussions/${fakeDiscussion.id}`,
-  });
+  const utils = await renderApp(
+    <Discussion discussionId={fakeDiscussion.id} />,
+    {
+      user: fakeUser,
+      path: `/app/discussions/:discussionId`,
+      url: `/app/discussions/${fakeDiscussion.id}`,
+    },
+  );
 
   await waitForLoadingToFinish();
 

apps/nextjs-app/src/app/app/discussions/[discussionId]/_components/discussion.tsx

@@ -0,0 +1,27 @@
+'use client';
+
+import { ErrorBoundary } from 'react-error-boundary';
+
+import { ContentLayout } from '@/components/layouts/content-layout';
+import { Comments } from '@/features/comments/components/comments';
+import { useDiscussion } from '@/features/discussions/api/get-discussion';
+import { DiscussionView } from '@/features/discussions/components/discussion-view';
+
+export const Discussion = ({ discussionId }: { discussionId: string }) => {
+  const discussion = useDiscussion({ discussionId });
+
+  return (
+    <ContentLayout title={discussion?.data?.data?.title}>
+      <DiscussionView discussionId={discussionId} />
+      <div className="mt-8">
+        <ErrorBoundary
+          fallback={
+            <div>Failed to load comments. Try to refresh the page.</div>
+          }
+        >
+          <Comments discussionId={discussionId} />
+        </ErrorBoundary>
+      </div>
+    </ContentLayout>
+  );
+};

apps/nextjs-app/src/app/app/discussions/[discussionId]/page.tsx

@@ -1,47 +1,71 @@
-'use client';
+import {
+  dehydrate,
+  HydrationBoundary,
+  QueryClient,
+} from '@tanstack/react-query';
 
-import { useParams } from 'next/navigation';
-import { ErrorBoundary } from 'react-error-boundary';
+import { getInfiniteCommentsQueryOptions } from '@/features/comments/api/get-comments';
+import {
+  getDiscussion,
+  getDiscussionQueryOptions,
+} from '@/features/discussions/api/get-discussion';
 
-import { ContentLayout } from '@/components/layouts/content-layout';
-import { Spinner } from '@/components/ui/spinner';
-import { Comments } from '@/features/comments/components/comments';
-import { useDiscussion } from '@/features/discussions/api/get-discussion';
-import { DiscussionView } from '@/features/discussions/components/discussion-view';
+import { Discussion } from './_components/discussion';
 
-const DiscussionPage = () => {
-  const params = useParams();
-  const discussionId = params?.discussionId as string;
+export const generateMetadata = async ({
+  params,
+}: {
+  params: Promise<{ discussionId: string }>;
+}) => {
+  const discussionId = (await params).discussionId;
 
-  const discussionQuery = useDiscussion({
-    discussionId,
-  });
+  const discussion = await getDiscussion({ discussionId });
 
-  if (discussionQuery.isLoading) {
-    return (
-      <div className="flex h-48 w-full items-center justify-center">
-        <Spinner size="lg" />
-      </div>
-    );
-  }
+  return {
+    title: discussion.data?.title,
+    description: discussion.data?.title,
+  };
+};
+
+const preloadData = async (discussionId: string) => {
+  const queryClient = new QueryClient();
+
+  await Promise.all([
+    queryClient.prefetchQuery(getDiscussionQueryOptions(discussionId)),
+    queryClient.prefetchInfiniteQuery(
+      getInfiniteCommentsQueryOptions(discussionId),
+    ),
+  ]);
 
-  const discussion = discussionQuery.data?.data;
+  const dehydratedState = dehydrate(queryClient);
+
+  return {
+    dehydratedState,
+    queryClient,
+  };
+};
+
+const DiscussionPage = async ({
+  params,
+}: {
+  params: Promise<{
+    discussionId: string;
+  }>;
+}) => {
+  const discussionId = (await params).discussionId;
+
+  const { dehydratedState, queryClient } = await preloadData(discussionId);
+
+  const discussion = queryClient.getQueryData(
+    getDiscussionQueryOptions(discussionId).queryKey,
+  );
 
-  if (!discussion) return null;
+  if (!discussion?.data) return <div>Discussion not found</div>;
 
   return (
-    <ContentLayout title={discussion.title}>
-      <DiscussionView discussionId={discussionId} />
-      <div className="mt-8">
-        <ErrorBoundary
-          fallback={
-            <div>Failed to load comments. Try to refresh the page.</div>
-          }
-        >
-          <Comments discussionId={discussionId} />
-        </ErrorBoundary>
-      </div>
-    </ContentLayout>
+    <HydrationBoundary state={dehydratedState}>
+      <Discussion discussionId={discussionId} />
+    </HydrationBoundary>
   );
 };
 

apps/nextjs-app/src/app/app/discussions/__tests__/discussions.test.tsx

@@ -11,7 +11,7 @@ import {
 } from '@/testing/test-utils';
 import { formatDate } from '@/utils/format';
 
-import DiscussionsPage from '../page';
+import { Discussions } from '../_components/discussions';
 
 beforeAll(() => {
   vi.spyOn(console, 'error').mockImplementation(() => {});
@@ -25,7 +25,7 @@ test(
   'should create, render and delete discussions',
   { timeout: 10000 },
   async () => {
-    await renderApp(<DiscussionsPage />);
+    await renderApp(<Discussions />);
 
     await waitForLoadingToFinish();
 

apps/nextjs-app/src/app/app/discussions/_components/discussions.tsx

@@ -0,0 +1,30 @@
+'use client';
+
+import { useQueryClient } from '@tanstack/react-query';
+
+import { ContentLayout } from '@/components/layouts/content-layout';
+import { getInfiniteCommentsQueryOptions } from '@/features/comments/api/get-comments';
+import { CreateDiscussion } from '@/features/discussions/components/create-discussion';
+import { DiscussionsList } from '@/features/discussions/components/discussions-list';
+
+export const Discussions = () => {
+  const queryClient = useQueryClient();
+
+  return (
+    <ContentLayout title="Discussions">
+      <div className="flex justify-end">
+        <CreateDiscussion />
+      </div>
+      <div className="mt-4">
+        <DiscussionsList
+          onDiscussionPrefetch={(id) => {
+            // Prefetch the comments data when the user hovers over the link in the list
+            queryClient.prefetchInfiniteQuery(
+              getInfiniteCommentsQueryOptions(id),
+            );
+          }}
+        />
+      </div>
+    </ContentLayout>
+  );
+};