From f93f8cb6ba14b412471fc7b8b98bafd736688699 Mon Sep 17 00:00:00 2001
From: Arik Chakma <arikchangma@gmail.com>
Date: Tue, 10 Jun 2025 12:19:47 +0600
Subject: [PATCH] wip

---
 .../AIChatHistory/AIChatHistory.tsx           | 54 +++++++++++++------
 .../AIChatHistory/ListChatHistory.tsx         | 38 ++++++++++++-
 .../AIChatHistory/ListChatHistorySkeleton.tsx |  6 +++
 3 files changed, 80 insertions(+), 18 deletions(-)

diff --git a/src/components/AIChatHistory/AIChatHistory.tsx b/src/components/AIChatHistory/AIChatHistory.tsx
index f365cc26c..790d3317c 100644
--- a/src/components/AIChatHistory/AIChatHistory.tsx
+++ b/src/components/AIChatHistory/AIChatHistory.tsx
@@ -18,6 +18,7 @@ export function AIChatHistory(props: AIChatHistoryProps) {
 
   const [keyTrigger, setKeyTrigger] = useState(0);
   const [isLoading, setIsLoading] = useState(true);
+  const [isChatHistoryLoading, setIsChatHistoryLoading] = useState(true);
   const [chatHistoryId, setChatHistoryId] = useState<string | undefined>(
     defaultChatHistoryId || undefined,
   );
@@ -35,7 +36,8 @@ export function AIChatHistory(props: AIChatHistoryProps) {
 
   useEffect(() => {
     if (!defaultChatHistoryId) {
-      return setIsLoading(false);
+      setIsLoading(false);
+      return;
     }
 
     if (!data) {
@@ -43,6 +45,7 @@ export function AIChatHistory(props: AIChatHistoryProps) {
     }
 
     setIsLoading(false);
+    setIsChatHistoryLoading(false);
   }, [data, defaultChatHistoryId]);
 
   const isDataLoading = isLoading || isBillingDetailsLoading;
@@ -85,7 +88,16 @@ export function AIChatHistory(props: AIChatHistoryProps) {
                     return;
                   }
 
-                  setIsLoading(true);
+                  // so that we can show the loading state when the chat history is not fetched yet
+                  // it will help us to avoid the flash of content
+                  const hasAlreadyFetched = queryClient.getQueryData(
+                    chatHistoryOptions(chatHistoryId).queryKey,
+                  );
+
+                  if (!hasAlreadyFetched) {
+                    setIsChatHistoryLoading(true);
+                  }
+
                   setChatHistoryId(chatHistoryId);
                   window.history.replaceState(
                     null,
@@ -106,21 +118,29 @@ export function AIChatHistory(props: AIChatHistoryProps) {
               />
             )}
 
-            <div className="flex grow">
-              <AIChat
-                key={keyTrigger}
-                messages={data?.messages}
-                chatHistoryId={chatHistoryId}
-                setChatHistoryId={(id) => {
-                  setChatHistoryId(id);
-                  window.history.replaceState(null, '', `/ai/chat/${id}`);
-                  queryClient.invalidateQueries({
-                    predicate: (query) => {
-                      return query.queryKey[0] === 'list-chat-history';
-                    },
-                  });
-                }}
-              />
+            <div className="relative flex grow">
+              {isChatHistoryLoading && (
+                <div className="absolute inset-0 z-20 flex items-center justify-center">
+                  <Loader2Icon className="h-8 w-8 animate-spin stroke-[2.5]" />
+                </div>
+              )}
+
+              {!isChatHistoryLoading && (
+                <AIChat
+                  key={keyTrigger}
+                  messages={data?.messages}
+                  chatHistoryId={chatHistoryId}
+                  setChatHistoryId={(id) => {
+                    setChatHistoryId(id);
+                    window.history.replaceState(null, '', `/ai/chat/${id}`);
+                    queryClient.invalidateQueries({
+                      predicate: (query) => {
+                        return query.queryKey[0] === 'list-chat-history';
+                      },
+                    });
+                  }}
+                />
+              )}
             </div>
           </>
         )}
diff --git a/src/components/AIChatHistory/ListChatHistory.tsx b/src/components/AIChatHistory/ListChatHistory.tsx
index d4cc41689..39de0587d 100644
--- a/src/components/AIChatHistory/ListChatHistory.tsx
+++ b/src/components/AIChatHistory/ListChatHistory.tsx
@@ -8,6 +8,8 @@ import { ChatHistoryItem } from './ChatHistoryItem';
 import {
   AlertCircleIcon,
   Loader2Icon,
+  PanelLeftCloseIcon,
+  PanelLeftIcon,
   PlusIcon,
   SearchIcon,
 } from 'lucide-react';
@@ -16,6 +18,7 @@ import { useEffect, useMemo, useState } from 'react';
 import { useDebounceValue } from '../../hooks/use-debounce';
 import { ListChatHistorySkeleton } from './ListChatHistorySkeleton';
 import { ChatHistoryError } from './ChatHistoryError';
+import { cn } from '../../lib/classname';
 
 type ListChatHistoryProps = {
   activeChatHistoryId?: string;
@@ -26,6 +29,7 @@ type ListChatHistoryProps = {
 export function ListChatHistory(props: ListChatHistoryProps) {
   const { activeChatHistoryId, onChatHistoryClick, onDelete } = props;
 
+  const [isOpen, setIsOpen] = useState(true);
   const [query, setQuery] = useState('');
   const {
     data,
@@ -79,13 +83,45 @@ export function ListChatHistory(props: ListChatHistoryProps) {
     );
   }, [data?.pages]);
 
+  if (!isOpen) {
+    return (
+      <div className="absolute top-1 left-1 z-20">
+        <button
+          className="flex size-8 items-center justify-center rounded-lg p-1 hover:bg-gray-200"
+          onClick={() => {
+            setIsOpen(true);
+          }}
+        >
+          <PanelLeftIcon className="h-4.5 w-4.5" />
+        </button>
+      </div>
+    );
+  }
+
   return (
-    <div className="w-[255px] shrink-0 border-r border-gray-200 bg-white p-2">
+    <div
+      className={cn(
+        'w-[255px] shrink-0 border-r border-gray-200 bg-white p-2',
+        !isOpen && 'hidden',
+      )}
+    >
       {isLoading && <ListChatHistorySkeleton />}
       {!isLoading && isError && <ChatHistoryError error={error} />}
 
       {!isLoading && !isError && (
         <>
+          <div className="mb-4 flex items-center justify-between">
+            <h1 className="font-medium text-gray-900">Chat History</h1>
+            <button
+              className="flex size-8 items-center justify-center rounded-lg p-1 hover:bg-gray-100"
+              onClick={() => {
+                setIsOpen(false);
+              }}
+            >
+              <PanelLeftCloseIcon className="h-4.5 w-4.5" />
+            </button>
+          </div>
+
           <button
             className="flex w-full items-center justify-center gap-2 rounded-lg bg-black p-2 text-sm text-white"
             onClick={() => {
diff --git a/src/components/AIChatHistory/ListChatHistorySkeleton.tsx b/src/components/AIChatHistory/ListChatHistorySkeleton.tsx
index add21017a..de3108825 100644
--- a/src/components/AIChatHistory/ListChatHistorySkeleton.tsx
+++ b/src/components/AIChatHistory/ListChatHistorySkeleton.tsx
@@ -1,6 +1,12 @@
 export function ListChatHistorySkeleton() {
   return (
     <>
+      <div className="mb-4 flex items-center justify-between gap-2">
+        <div className="h-6 w-1/2 animate-pulse rounded bg-gray-200" />
+
+        <div className="size-8 animate-pulse rounded-md bg-gray-200" />
+      </div>
+
       <div className="h-9 w-full animate-pulse rounded-lg bg-gray-200" />
 
       <div className="relative mt-2">