From 30e3dbb42b334a4d3087d4f04fa4ac23dc0db8ea Mon Sep 17 00:00:00 2001
From: Gregor Lohaus <lohausgregor@gmail.com>
Date: Tue, 21 Apr 2026 14:19:50 +0200
Subject: [PATCH] chat interface

---
 .../(.)assistant/_components/ChatModal.tsx    | 21 ++--
 src/app/@modal/(.)assistant/page.tsx          |  2 +-
 src/app/_providers/MessagesProvider.tsx       | 69 ++++++++++++++
 src/app/chat/_components/AssistantMessage.tsx |  2 +-
 src/app/chat/_components/ChatInterface.tsx    | 95 +++++++------------
 src/app/chat/_components/Messages.tsx         | 27 ++++--
 src/app/chat/page.tsx                         | 21 ++--
 src/app/layout.tsx                            | 17 ++--
 src/components/ui/card.tsx                    |  5 +-
 src/lib/hooks.ts                              |  9 +-
 src/server/routers/chat.ts                    |  2 +
 11 files changed, 173 insertions(+), 97 deletions(-)
 create mode 100644 src/app/_providers/MessagesProvider.tsx

diff --git a/src/app/@modal/(.)assistant/_components/ChatModal.tsx b/src/app/@modal/(.)assistant/_components/ChatModal.tsx
index 088911b..eb19864 100644
--- a/src/app/@modal/(.)assistant/_components/ChatModal.tsx
+++ b/src/app/@modal/(.)assistant/_components/ChatModal.tsx
@@ -2,6 +2,8 @@
 import { useRouter } from 'next/navigation'
 import { Dialog, DialogContent, DialogHeader, DialogTitle } from '~/components/ui/dialog'
 import ChatInterface from '~/app/chat/_components/ChatInterface'
+import { useMessages } from '~/app/_providers/MessagesProvider';
+import { Spinner } from '~/components/ui/spinner';
 
 type DBMessage = {
 	id: string
@@ -9,14 +11,9 @@ type DBMessage = {
 	content: string
 }
 
-interface ChatModalProps {
-	sessionId?: string
-	// initialMessages: DBMessage[]
-}
-
-export default function ChatModal({ sessionId }: ChatModalProps) {
+export default function ChatModal() {
 	const router = useRouter()
-
+	const {messages,session,clearChat,clearingChat,isLoading,error,refetchMessages} = useMessages()
 	return (
 		<Dialog modal={true} open onOpenChange={() => router.back()}>
 			<DialogContent className="w-full max-w-full rounded-none sm:max-w-full h-[100svh] lg:max-w-3xl lg:rounded-xl lg:h-[80vh] flex flex-col p-0 gap-0">
@@ -24,7 +21,15 @@ export default function ChatModal({ sessionId }: ChatModalProps) {
 					<DialogTitle>Talk To My AI-Assistant</DialogTitle>
 				</DialogHeader>
 				<div className="flex-1 overflow-hidden min-h-0">
-					<ChatInterface sessionId={sessionId} />
+					{messages && session?.id &&
+					<ChatInterface sessionId={session.id} dbMessages={messages}/>
+					}
+					{isLoading &&
+						<><Spinner/> Loading Messages...</>
+					}
+					{error &&
+						<div> {error} </div>
+					}
 				</div>
 			</DialogContent>
 		</Dialog>
diff --git a/src/app/@modal/(.)assistant/page.tsx b/src/app/@modal/(.)assistant/page.tsx
index 8fd4f7d..6dc86fe 100644
--- a/src/app/@modal/(.)assistant/page.tsx
+++ b/src/app/@modal/(.)assistant/page.tsx
@@ -8,7 +8,7 @@ export default function AssistantModalPage() {
 	const { data: session, error, isLoading } = trpc.chat.getSession.useQuery();
 	return (
 		<>
-			<ChatModal sessionId={session?.id} />
+			<ChatModal/>
 			{error && <div>{error.message}</div>}
 			{isLoading && <Skeleton />}
 		</>
diff --git a/src/app/_providers/MessagesProvider.tsx b/src/app/_providers/MessagesProvider.tsx
new file mode 100644
index 0000000..e179dfe
--- /dev/null
+++ b/src/app/_providers/MessagesProvider.tsx
@@ -0,0 +1,69 @@
+'use client'
+import type { inferRouterOutputs } from '@trpc/server';
+import { createContext, useContext, useEffect, useState, type ReactNode } from 'react'
+import { trpc } from '~/app/_trpc/Client'
+import { type ChatRouter } from '~/server/routers/chat'
+const MessageContext = createContext<{
+  session?: inferRouterOutputs<ChatRouter>['getSession']
+  messages?: inferRouterOutputs<ChatRouter>['getMessages']
+  refetchMessages: () => void
+  clearChat: (callback?: () => void) => void
+  error: string|null
+  isLoading: boolean
+  clearingChat: boolean
+  clearedChat: boolean
+}>({
+  session: undefined,
+  messages: undefined,
+  refetchMessages: () => undefined,
+  clearChat: () => undefined,
+  error: null,
+  isLoading: true,
+  clearingChat: false,
+  clearedChat: false
+})
+export const useMessages = () => useContext(MessageContext)
+export const MessagesProvider = ({children}:{children:ReactNode}) => {
+  const [error,setError] = useState<string|null>(null)
+  const [isLoading,setIsLoading] = useState<boolean>(true)
+  const { data: session,error:sessionError,isLoading:sessionLoading} = trpc.chat.getSession.useQuery()
+  const { data: messages, refetch, error:messageError, isLoading:messagesLoading } = trpc.chat.getMessages.useQuery(session?.id ? session.id : "")
+  const { mutate ,isPending:clearingChat,isSuccess:clearedChat } = trpc.chat.clearChat.useMutation()
+  const utils = trpc.useUtils()
+  const refetchMessages = () => {
+      utils.chat.getMessages.invalidate()
+      refetch()
+  }
+  const clearChat = (callback?: () => void) => {
+    mutate(undefined,{onSuccess: () => {
+      if (callback) {
+        callback()
+      }
+      utils.chat.getMessages.invalidate()
+    }})
+  }
+  useEffect(() => {
+    messageError && setError(messageError.message)
+    sessionError && setError(sessionError.message)
+  },[messageError,sessionError])
+  useEffect(() => {
+    !sessionLoading && !messagesLoading && setIsLoading(false)
+    sessionLoading || messagesLoading && setIsLoading(true)
+  },[sessionLoading,messagesLoading])
+  return (
+    <MessageContext.Provider value={
+      {
+        session,
+        messages,
+        refetchMessages,
+        clearChat,
+        error,
+        isLoading,
+        clearingChat,
+        clearedChat
+      }
+    }>
+      {children}
+    </MessageContext.Provider>
+  )
+}
diff --git a/src/app/chat/_components/AssistantMessage.tsx b/src/app/chat/_components/AssistantMessage.tsx
index 9c24c68..98d10ec 100644
--- a/src/app/chat/_components/AssistantMessage.tsx
+++ b/src/app/chat/_components/AssistantMessage.tsx
@@ -16,7 +16,7 @@ export const AssistantMessage = (props: { message: UIMessage }) => {
         {message.parts.map((part, i) => {
           if (part.type === 'text') {
             return (
-              <Markdown key={i}>
+              <Markdown>
                 {part.text}
               </Markdown>
             )
diff --git a/src/app/chat/_components/ChatInterface.tsx b/src/app/chat/_components/ChatInterface.tsx
index 66736ef..b28465e 100644
--- a/src/app/chat/_components/ChatInterface.tsx
+++ b/src/app/chat/_components/ChatInterface.tsx
@@ -9,9 +9,8 @@ import {
 } from '~/app/_providers/GsapProvicer';
 import Messages from './Messages'
 import { DeleteIcon } from 'lucide-react';
-import { trpc } from '~/app/_trpc/Client'
 import { Spinner } from '~/components/ui/spinner';
-import { Skeleton } from '~/components/ui/skeleton';
+import { useMessages } from '~/app/_providers/MessagesProvider';
 interface DBMessage {
 	id: string
 	role: 'user' | 'assistant'
@@ -19,8 +18,8 @@ interface DBMessage {
 }
 
 interface ChatInterfaceProps {
-	sessionId?: string
-	// initialMessages: DBMessage[]
+	sessionId: string,
+	dbMessages: DBMessage[],
 }
 
 function toUIMessages(dbMessages: DBMessage[]): UIMessage[] {
@@ -30,28 +29,10 @@ function toUIMessages(dbMessages: DBMessage[]): UIMessage[] {
 		parts: [{ type: 'text' as const, text: m.content }],
 	}))
 }
-export default function ChatInterface({ sessionId }: ChatInterfaceProps) {
-	if (!sessionId) {
-		return (
-			<div className="flex flex-col h-full">
-				<Skeleton className="w-full"/>
-				<Skeleton className="w-[20%]"/>
-				<Skeleton className='w-[45%]'/>
-			</div>
-		)
-	}
-	const utils = trpc.useUtils();
-	const { data: dbMessages, refetch: refetchMessages } = trpc.chat.getMessages.useQuery(sessionId)
-	const [messages, setMessages] = useState<UIMessage[]>([]);
-	function addMessage(newMessage: UIMessage) {
-		setMessages(prev => [...prev, newMessage]);
-	}
-	useEffect(() => {
-		setMessages(toUIMessages(dbMessages ?? []));
-	}, [dbMessages]);
 
-	if (messages.at(0)?.id != 'init') {
-		messages.unshift({
+function addInitMessage(messageArray: UIMessage[]) {
+	if (messageArray.at(0)?.id != 'init') {
+		messageArray.unshift({
 			id: "init",
 			role: 'assistant',
 			parts: [{
@@ -60,46 +41,31 @@ export default function ChatInterface({ sessionId }: ChatInterfaceProps) {
 			}],
 		})
 	}
+}
+
+export default function ChatInterface({ dbMessages, sessionId }: ChatInterfaceProps) {
 	const [input, setInput] = useState('')
-	const { sendMessage, status, error, clearError } = useChat({
+	const {  clearingChat, clearChat, refetchMessages } = useMessages();
+	const initialMessages = toUIMessages(dbMessages)
+	addInitMessage(initialMessages)
+	const { messages, sendMessage, status, error, clearError, setMessages } = useChat({
 		transport: new DefaultChatTransport({
 			api: '/api/chat', body: { sessionId },
 		}),
-		messages: messages,
+		messages: initialMessages,
 	})
-	const handleSend = () => {
-		const text = input.trim()
-		if (!text || status != 'ready' || sessionId == undefined) return
-		setInput('')
-		sendMessage({ text })
-		addMessage({
-			id: "", role: "user", parts: [
-				{ type: 'text', text }
-			]
-		})
-		addMessage({
-			id: "", role: "assistant", parts: [
-				{ type: 'text', text: "Thinking..." }
-			]
-		})
-	}
-	const clearChatMutation = trpc.chat.clearChat.useMutation()
-	const handleClear = () => {
-		clearChatMutation.mutate(undefined, {
-			onSuccess: () => {
-				utils.chat.getMessages.invalidate()
-				refetchMessages()
-			}
-		})
-	}
-	const gsapContext = useGsapContext()
 	useEffect(() => {
-		console.log(status)
-		if (status == 'ready') {
-			utils.chat.getMessages.invalidate();
+		return () => {
 			refetchMessages()
 		}
-	}, [status])
+	}, [])
+	const handleSend = () => {
+		const text = input.trim()
+		if (!text || status != 'ready' || clearingChat) return
+		setInput('')
+		sendMessage({ text })
+	}
+	const gsapContext = useGsapContext()
 	useEffect(() => {
 		let scroller = gsapContext?.getScroller()
 		if (scroller instanceof Window) {
@@ -111,9 +77,8 @@ export default function ChatInterface({ sessionId }: ChatInterfaceProps) {
 	return (
 		<div className="flex flex-col h-full">
 			{messages &&
-				<Messages messages={messages} />
+				<Messages status={status} messages={messages} />
 			}
-
 			{error && (
 				<div className="mx-4 mb-2 flex items-start gap-2 rounded-lg border border-destructive/50 bg-destructive/10 px-3 py-2 text-sm text-destructive">
 					<span className="flex-1">
@@ -156,10 +121,16 @@ export default function ChatInterface({ sessionId }: ChatInterfaceProps) {
 					</Button>
 					<Button
 						variant='destructive'
-						onClick={handleClear}
-						disabled={status != "ready" || clearChatMutation.isPending}
+						onClick={() => {
+							clearChat(() => {
+								let messages: UIMessage[] = [];
+								addInitMessage(messages);
+								setMessages(messages)
+							})
+						}}
+						disabled={status != "ready" || clearingChat}
 					>
-						{clearChatMutation.isPending ?
+						{clearingChat ?
 							<Spinner /> :
 							"Clear Chat"
 						}
diff --git a/src/app/chat/_components/Messages.tsx b/src/app/chat/_components/Messages.tsx
index 2095112..bfbbad7 100644
--- a/src/app/chat/_components/Messages.tsx
+++ b/src/app/chat/_components/Messages.tsx
@@ -1,24 +1,35 @@
-import { type UIMessage } from 'ai'
+import { type ChatStatus, type UIMessage } from 'ai'
 import * as Card from "~/components/ui/card"
-import AnimateTextIn from '~/app/_components/Animated/AnimateIn';
 import { UserMessage } from './UserMessage';
 import { AssistantMessage } from './AssistantMessage';
 import { ScrollArea } from '~/components/ui/scroll-area';
-import { useTimeLine } from '~/app/_providers/GsapProvicer';
-import {
-  memo
-  } from 'react';
-const Messages = memo(({ messages}: { messages: UIMessage[]}) => {
+import { memo } from 'react';
+const Messages = memo(({messages,status}: { messages: UIMessage[],status:ChatStatus}) => {
   return (
     <ScrollArea data-scroller-priority='1' className="w-full h-[90%] max-w-4xl mx-auto">
       {messages.map((message, i) => (
-        <Card.AnimatedCard scrollOnly={true} tlId='chat' position={i * 0.2} key={i}>
+        <Card.AnimatedCard scrollOnly={true} key={i}>
           <Card.CardContent>
             {message.role == 'assistant' && <AssistantMessage message={message} />}
             {message.role == 'user' && <UserMessage message={message} />}
           </Card.CardContent>
         </Card.AnimatedCard>
       ))}
+      {status == 'submitted' &&
+        <Card.AnimatedCard scrollOnly={true}>
+          <Card.CardContent>
+            <AssistantMessage message={{
+              id:"",
+              role:"assistant",
+              parts:[{
+                type:'text',
+                text:'Thinking ...'
+              }]
+            }}/>
+          </Card.CardContent>
+        </Card.AnimatedCard>
+
+      }
     </ScrollArea>)
 })
 
diff --git a/src/app/chat/page.tsx b/src/app/chat/page.tsx
index 7c7eac0..1b66031 100644
--- a/src/app/chat/page.tsx
+++ b/src/app/chat/page.tsx
@@ -4,19 +4,28 @@ import { trpc } from '../_trpc/Client';
 import { Skeleton } from '~/components/ui/skeleton';
 import AnimatedPageTitle from '../_components/Animated/AnimatedPageTitle';
 import { useTimeLine } from '../_providers/GsapProvicer';
+import { useMessages } from '../_providers/MessagesProvider';
+import { Spinner } from '~/components/ui/spinner';
+import { useEffect } from 'react';
 
 export default function ChatPage() {
-	const { data: session, error, isLoading } = trpc.chat.getSession.useQuery();
-	useTimeLine(session)
+	const {messages,session,clearChat,clearingChat,isLoading,error,refetchMessages} = useMessages()
+	useTimeLine(messages)
 	return (
 		<div className="flex flex-col px-10 lg:px-0 w-full h-full max-w-4xl mx-auto pt-10">
 					<AnimatedPageTitle position={0}>
 						<span>Talk To My </span> <span> AI-Assistant</span>
 					</AnimatedPageTitle>
-					<div className='flex items-center h-[80%] my-auto w-full'>
-					<ChatInterface sessionId={session?.id} /> 
-					{error && <div>{error.message}</div>}
-					{isLoading && <Skeleton/>}
+					<div className='flex items-center h-[80%] w-full my-auto w-full'>
+					{messages && session?.id &&
+					<ChatInterface sessionId={session.id} dbMessages={messages}/>
+					}
+					{isLoading &&
+						<><Spinner/> Loading Messages...</>
+					}
+					{error &&
+						<div> {error} </div>
+					}
 					</div>
 		</div>
 	)
diff --git a/src/app/layout.tsx b/src/app/layout.tsx
index c642dc7..6fc0213 100644
--- a/src/app/layout.tsx
+++ b/src/app/layout.tsx
@@ -11,6 +11,7 @@ import TrpcProvider from "./_trpc/TrpcProvider";
 // const ThemeProvider = dynamic(() => import("./_providers/ThemeProvider"),{ssr:true})
 import ThemeProvider from './_providers/ThemeProvider'
 import GsapProvider from "./_providers/GsapProvicer";
+import {MessagesProvider} from "./_providers/MessagesProvider";
 import { CodeHighlightStyle } from "./_components/CodeHighlightSyle";
 import { cn } from "~/lib/utils";
 import AnimatedBackGroundContainer from "./_components/Animated/AnimatedBackGroundContainer";
@@ -45,14 +46,16 @@ export default async function RootLayout({
 						</head>
 						<body className="flex flex-col bg-background text-foreground">
 							<ThemeProvider>
-							<AnimatedBackGroundContainer followSpeed={0.003} particleCount={100} orbitRadius={2000}>
-								<TopNav />
-								<main className="absolute lg:top-10 h-screen lg:h-[calc(100vh-var(--spacing)*10)] w-screen">
-									{children}
-								</main>
-								{modal}
-							</AnimatedBackGroundContainer>
+							<MessagesProvider>
+								<AnimatedBackGroundContainer followSpeed={0.003} particleCount={100} orbitRadius={2000}>
+									<TopNav />
+									<main className="absolute lg:top-10 h-screen lg:h-[calc(100vh-var(--spacing)*10)] w-screen">
+										{children}
+									</main>
+									{modal}
+								</AnimatedBackGroundContainer>
 								<ChatFAB />
+								</MessagesProvider>
 							</ThemeProvider>
 						</body>
 					</html>
diff --git a/src/components/ui/card.tsx b/src/components/ui/card.tsx
index 8e33bc5..6585ab9 100644
--- a/src/components/ui/card.tsx
+++ b/src/components/ui/card.tsx
@@ -26,10 +26,9 @@ function AnimatedCard({
   className,
   position = 0,
   size = "default",
-  tlId = undefined,
   scrollOnly = false,
   ...props
-}: React.ComponentProps<"div"> & { size?: "default" | "sm", position: gsap.Position, tlId?: string, scrollOnly?: boolean }) {
+}: React.ComponentProps<"div"> & { size?: "default" | "sm", position?: gsap.Position,  scrollOnly?: boolean }) {
   const gsapContext = useGsapContext()
   const ref = useRef<HTMLDivElement | null>(null)
   useGSAP(() => {
@@ -47,7 +46,7 @@ function AnimatedCard({
     console.log(isInView)
     const fromVars = { x: -100, opacity: 0, duration: 0.5 }
     if (isInView && !scrollOnly) {
-      gsapContext?.addAnimation(gsap.from(ref.current, fromVars), position, tlId)
+      gsapContext?.addAnimation(gsap.from(ref.current, fromVars), position)
     } else {
       gsap.from(ref.current,
         {
diff --git a/src/lib/hooks.ts b/src/lib/hooks.ts
index 72d8f2a..c8acb79 100644
--- a/src/lib/hooks.ts
+++ b/src/lib/hooks.ts
@@ -1,7 +1,7 @@
 'use client'
 
 import type { UseTRPCQueryResult } from "node_modules/@trpc/react-query/dist/getQueryKey.d-CruH3ncI.mjs"
-import { useEffect, useState } from "react"
+import { useEffect, useRef, useState } from "react"
 
 function useRelationShipSuccess<T extends Record<string,any> & {id:string},K extends keyof T>(
   relationShipData: T[] | undefined,
@@ -56,3 +56,10 @@ export function makeUseRelationShipWithNameIndex<K extends string>(key:K) {
   }
 }
 
+export function usePrevious<T>(value:T,initialValue:T) {
+  const ref = useRef(initialValue)
+  useEffect(() => {
+    ref.current = value
+  })
+  return ref.current;
+}
diff --git a/src/server/routers/chat.ts b/src/server/routers/chat.ts
index 700bfb8..bdf0127 100644
--- a/src/server/routers/chat.ts
+++ b/src/server/routers/chat.ts
@@ -75,3 +75,5 @@ export const chatRouter = router({
     await db.insert(systemSettings).values({ systemPropmt: input.prompt })
   }),
 })
+
+export type ChatRouter = typeof chatRouter;