Tweak data fetching with suspense

app/actions.ts

@@ -5,7 +5,11 @@ import { kv } from '@vercel/kv'
 
 import { type Chat } from '@/lib/types'
 
-export async function getChats(userId: string) {
+export async function getChats(userId?: string | null) {
+  if (!userId) {
+    return []
+  }
+
   try {
     const pipeline = kv.pipeline()
     const chats: string[] = await kv.zrange(`user:chat:${userId}`, 0, -1)

components/chat-panel.tsx

@@ -32,7 +32,7 @@ export function ChatPanel({
               onClick={() => stop()}
               className="bg-background"
             >
-              <StopCircle className="mr-2 h-4 w-4" />
+              <StopCircle className="w-4 h-4 mr-2" />
               Stop generating
             </Button>
           ) : (
@@ -42,13 +42,13 @@ export function ChatPanel({
                 onClick={() => reload()}
                 className="bg-background"
               >
-                <RefreshCcw className="mr-2 h-4 w-4" />
+                <RefreshCcw className="w-4 h-4 mr-2" />
                 Regenerate response
               </Button>
             )
           )}
         </div>
-        <div className="space-y-4 border-t bg-background shadow-lg sm:rounded-t-xl sm:border sm:p-4">
+        <div className="p-4 space-y-4 border-t shadow-lg bg-background sm:rounded-t-xl sm:border">
           <PromptForm
             onSubmit={value => {
               append({
@@ -58,7 +58,7 @@ export function ChatPanel({
             }}
             isLoading={isLoading}
           />
-          <p className="hidden px-2 text-center text-xs leading-normal text-muted-foreground sm:block">
+          <p className="hidden px-2 text-xs leading-normal text-center text-muted-foreground sm:block">
             Open source AI chatbot app built with{' '}
             <ExternalLink href="https://nextjs.org">Next.js</ExternalLink> and{' '}
             <ExternalLink href="https://vercel.com/storage/kv">

components/header.tsx

@@ -5,19 +5,24 @@ import { buttonVariants } from '@/components/ui/button'
 import { GitHub, Separator, Vercel } from '@/components/icons'
 import { Sidebar } from '@/components/sidebar'
 import { UserMenu } from '@/components/user-menu'
-import { getChats } from '@/app/actions'
+import { SidebarList } from './sidebar-list'
+import { Suspense } from 'react'
 
 export async function Header() {
   const session = await auth()
-  const chats = session?.user?.email ? await getChats(session.user.email) : []
 
   return (
-    <header className="sticky top-0 z-50 flex h-16 w-full shrink-0 items-center justify-between border-b bg-gradient-to-b from-background/10 via-background/50 to-background/80 px-4 backdrop-blur-xl">
+    <header className="sticky top-0 z-50 flex items-center justify-between w-full h-16 px-4 border-b shrink-0 bg-gradient-to-b from-background/10 via-background/50 to-background/80 backdrop-blur-xl">
       <div className="flex items-center">
         {/* @ts-ignore */}
-        <Sidebar chats={chats} session={session} />
-        <div className="hidden items-center md:flex">
-          <Separator className="h-6 w-6 text-muted-foreground/50" />
+        <Sidebar session={session}>
+          <Suspense fallback={<div className="flex-1 overflow-auto" />}>
+            {/* @ts-ignore */}
+            <SidebarList session={session} />
+          </Suspense>
+        </Sidebar>
+        <div className="items-center hidden md:flex">
+          <Separator className="w-6 h-6 text-muted-foreground/50" />
           <UserMenu session={session} />
         </div>
       </div>
@@ -28,7 +33,7 @@ export async function Header() {
           rel="noopener noreferrer"
           className={cn(buttonVariants({ variant: 'outline' }))}
         >
-          <GitHub className="mr-2 h-4 w-4" />
+          <GitHub className="w-4 h-4 mr-2" />
           <span>GitHub</span>
         </a>
         <a
@@ -36,9 +41,9 @@ export async function Header() {
           target="_blank"
           className={cn(buttonVariants())}
         >
-          <Vercel className="mr-2 h-4 w-4" />
+          <Vercel className="w-4 h-4 mr-2" />
           <span className="hidden sm:block">Deploy to Vercel</span>
-          <span className="sm:hidden">Deploy</span>
+          <span className="sm:hidden">Vercel</span>
         </a>
       </div>
     </header>

components/sidebar-list.tsx

@@ -0,0 +1,40 @@
+import { getChats } from '@/app/actions'
+import { Session } from '@auth/core/types'
+import { SidebarItem } from './sidebar-item'
+
+export interface SidebarListProps {
+  session?: Session
+}
+
+export async function SidebarList(props: SidebarListProps) {
+  const chats = await getChats(props.session?.user?.email)
+  return (
+    <div className="flex-1 overflow-auto">
+      {chats?.length ? (
+        <div className="px-2 space-y-2">
+          {chats.map(chat => (
+            <SidebarItem
+              key={chat.id}
+              title={chat.title}
+              userId={props?.session?.user?.email ?? ''}
+              href={`/chat/${chat.id}`}
+              id={chat.id}
+            />
+          ))}
+        </div>
+      ) : (
+        <div className="p-8 text-center">
+          <p className="text-sm text-muted-foreground">
+            {props?.session?.user ? (
+              <>No chat history</>
+            ) : (
+              <>Login for history</>
+            )}
+          </p>
+        </div>
+      )}
+    </div>
+  )
+}
+
+SidebarList.displayName = 'SidebarList'

components/sidebar.tsx

@@ -5,7 +5,6 @@ import { signOut } from '@auth/nextjs/client'
 import { type Session } from '@auth/nextjs/types'
 import { Sidebar as SidebarIcon } from 'lucide-react'
 
-import { type Chat } from '@/lib/types'
 import { Button } from '@/components/ui/button'
 import {
   Sheet,
@@ -14,20 +13,19 @@ import {
   SheetTitle,
   SheetTrigger
 } from '@/components/ui/sheet'
-import { SidebarItem } from '@/components/sidebar-item'
 import { ThemeToggle } from '@/components/theme-toggle'
 
 export interface SidebarProps {
   session?: Session
-  chats: Chat[]
+  children?: React.ReactNode
 }
 
-export async function Sidebar({ session, chats }: SidebarProps) {
+export function Sidebar({ session, children }: SidebarProps) {
   return (
     <Sheet>
       <SheetTrigger asChild>
-        <Button variant="ghost" className="-ml-2 h-9 w-9 p-0">
-          <SidebarIcon className="h-6 w-6" />
+        <Button variant="ghost" className="p-0 -ml-2 h-9 w-9">
+          <SidebarIcon className="w-6 h-6" />
           <span className="sr-only">Toggle Sidebar</span>
         </Button>
       </SheetTrigger>
@@ -38,27 +36,7 @@ export async function Sidebar({ session, chats }: SidebarProps) {
         <SheetHeader className="p-4">
           <SheetTitle className="text-sm">Chat History</SheetTitle>
         </SheetHeader>
-        <div className="flex-1 overflow-auto">
-          {chats?.length ? (
-            <div className="space-y-2 px-2">
-              {chats.map(chat => (
-                <SidebarItem
-                  key={chat.id}
-                  title={chat.title}
-                  userId={session?.user?.email ?? ''}
-                  href={`/chat/${chat.id}`}
-                  id={chat.id}
-                />
-              ))}
-            </div>
-          ) : (
-            <div className="p-8 text-center">
-              <p className="text-sm text-muted-foreground">
-                {session?.user ? <>No chat history</> : <>Login for history</>}
-              </p>
-            </div>
-          )}
-        </div>
+        {children}
         <div className="flex items-center p-4">
           <ThemeToggle />
           {session?.user && (