feat: add tab navigation for chat and topic details

src/components/RoadmapAIChat/RoadmapAIChat.tsx

@@ -65,6 +65,8 @@ export type RoamdapAIChatHistoryType = {
   jsx?: React.ReactNode;
 };
 
+export type RoadmapAIChatTab = 'chat' | 'topic';
+
 type RoadmapAIChatProps = {
   roadmapId: string;
 };
@@ -82,6 +84,7 @@ export function RoadmapAIChat(props: RoadmapAIChatProps) {
   const [selectedTopicTitle, setSelectedTopicTitle] = useState<string | null>(
     null,
   );
+  const [activeTab, setActiveTab] = useState<RoadmapAIChatTab>('chat');
 
   const [aiChatHistory, setAiChatHistory] = useState<
     RoamdapAIChatHistoryType[]
@@ -178,6 +181,7 @@ export function RoadmapAIChat(props: RoadmapAIChatProps) {
       flushSync(() => {
         setSelectedTopicId(topicId);
         setSelectedTopicTitle(topicTitle);
+        setActiveTab('topic');
       });
 
       const topicWithSlug = slugify(topicTitle) + '@' + topicId;
@@ -389,41 +393,6 @@ export function RoadmapAIChat(props: RoadmapAIChatProps) {
       </div>
 
       <div className="relative flex h-full max-w-[40%] flex-grow flex-col border-l border-gray-200 bg-white">
-        {selectedTopicId && (
-          <>
-            <TopicDetail
-              resourceId={selectedTopicId}
-              resourceType="roadmap"
-              renderer="editor"
-              canSubmitContribution={false}
-              wrapperClassName="static mx-auto sm:pt-14 pt-14"
-              overlayClassName="hidden"
-              onClose={() => setSelectedTopicId(null)}
-              shouldCloseOnBackdropClick={false}
-              shouldCloseOnEscape={false}
-            />
-            <div className="absolute top-0 left-0 z-99 flex w-full items-center justify-between gap-2 bg-gray-100 p-1">
-              <div className="flex items-center gap-2 px-4 py-2 text-sm">
-                AI Tutor{' '}
-                <ChevronRightIcon className="size-4 shrink-0 stroke-[2.5] text-gray-500" />{' '}
-                {selectedTopicTitle}
-              </div>
-              <button
-                className="flex cursor-pointer items-center gap-2 rounded-lg p-2 text-black hover:bg-gray-200"
-                onClick={() => setSelectedTopicId(null)}
-              >
-                <XIcon className="size-3 shrink-0" strokeWidth={2.5} />
-              </button>
-            </div>
-          </>
-        )}
-
-        {!selectedTopicId && (
-          <>
-            {showUpgradeModal && (
-              <UpgradeAccountModal onClose={() => setShowUpgradeModal(false)} />
-            )}
-
         <RoadmapAIChatHeader
           isLoading={isDataLoading}
           hasChatHistory={hasChatHistory}
@@ -434,8 +403,46 @@ export function RoadmapAIChat(props: RoadmapAIChatProps) {
           onUpgrade={() => {
             setShowUpgradeModal(true);
           }}
+          activeTab={activeTab}
+          onTabChange={(tab) => {
+            setActiveTab(tab);
+            if (tab === 'topic' && selectedTopicId && selectedTopicTitle) {
+              handleSelectTopic(selectedTopicId, selectedTopicTitle);
+            }
+          }}
+          onCloseTopic={() => {
+            setSelectedTopicId(null);
+            setSelectedTopicTitle(null);
+            setActiveTab('chat');
+          }}
+          selectedTopicId={selectedTopicId}
         />
 
+        {activeTab === 'topic' && selectedTopicId && (
+          <TopicDetail
+            resourceId={selectedTopicId}
+            resourceType="roadmap"
+            renderer="editor"
+            canSubmitContribution={false}
+            wrapperClassName="static mx-auto h-auto grow"
+            overlayClassName="hidden"
+            closeButtonClassName="hidden"
+            onClose={() => {
+              setSelectedTopicId(null);
+              setSelectedTopicTitle(null);
+              setActiveTab('chat');
+            }}
+            shouldCloseOnBackdropClick={false}
+            shouldCloseOnEscape={false}
+          />
+        )}
+
+        {activeTab === 'chat' && (
+          <>
+            {showUpgradeModal && (
+              <UpgradeAccountModal onClose={() => setShowUpgradeModal(false)} />
+            )}
+
             <div className="relative grow overflow-y-auto" ref={scrollareaRef}>
               {isLoading && (
                 <div className="absolute inset-0 flex h-full w-full items-center justify-center">

src/components/RoadmapAIChat/RoadmapAIChatHeader.tsx

@@ -3,12 +3,16 @@ import { getAiCourseLimitOptions } from '../../queries/ai-course';
 import { queryClient } from '../../stores/query-client';
 import { billingDetailsOptions } from '../../queries/billing';
 import { isLoggedIn } from '../../lib/jwt';
-import { BotIcon, GiftIcon, Trash2Icon } from 'lucide-react';
-import type { RoamdapAIChatHistoryType } from './RoadmapAIChat';
+import { BookIcon, BotIcon, GiftIcon, Trash2Icon, XIcon } from 'lucide-react';
+import type {
+  RoadmapAIChatTab,
+  RoamdapAIChatHistoryType,
+} from './RoadmapAIChat';
 import { useState } from 'react';
 import { useToast } from '../../hooks/use-toast';
 import { getPercentage } from '../../lib/number';
 import { AILimitsPopup } from '../GenerateCourse/AILimitsPopup';
+import { cn } from '../../lib/classname';
 
 type RoadmapAIChatHeaderProps = {
   isLoading: boolean;
@@ -18,6 +22,11 @@ type RoadmapAIChatHeaderProps = {
 
   onLogin: () => void;
   onUpgrade: () => void;
+
+  activeTab: RoadmapAIChatTab;
+  onTabChange: (tab: RoadmapAIChatTab) => void;
+  onCloseTopic: () => void;
+  selectedTopicId: string | null;
 };
 
 export function RoadmapAIChatHeader(props: RoadmapAIChatHeaderProps) {
@@ -27,6 +36,11 @@ export function RoadmapAIChatHeader(props: RoadmapAIChatHeaderProps) {
     onLogin,
     onUpgrade,
     isLoading: isDataLoading,
+
+    activeTab,
+    onTabChange,
+    onCloseTopic,
+    selectedTopicId,
   } = props;
 
   const toast = useToast();
@@ -58,11 +72,43 @@ export function RoadmapAIChatHeader(props: RoadmapAIChatHeaderProps) {
         />
       )}
 
-      <div className="flex min-h-[46px] items-center justify-between gap-2 border-b border-gray-200 px-3 py-2 text-sm">
-        <span className="flex items-center gap-2 text-sm">
+      <div className="flex h-[46px] items-center justify-between gap-2 border-b border-gray-200 text-sm">
+        <div className="flex items-center">
+          <button
+            className={cn(
+              'flex items-center gap-2 px-2 py-3 text-sm',
+              activeTab === 'chat' && selectedTopicId && 'bg-gray-100',
+            )}
+            onClick={() => onTabChange('chat')}
+          >
             <BotIcon className="size-4 shrink-0 text-black" />
             <span>AI Chat</span>
-        </span>
+          </button>
+
+          {(activeTab === 'topic' || selectedTopicId) && (
+            <div
+              className={cn(
+                'flex items-center gap-1.5 border-l border-gray-200 px-2 py-3 text-sm',
+                activeTab === 'topic' && selectedTopicId && 'bg-gray-100',
+              )}
+            >
+              <button
+                className="flex items-center gap-2"
+                onClick={() => onTabChange('topic')}
+              >
+                <BookIcon className="size-4 shrink-0 text-black" />
+                <span>Topic Details</span>
+              </button>
+
+              <button
+                className="ml-auto rounded-lg p-1 text-gray-500 hover:bg-gray-200"
+                onClick={onCloseTopic}
+              >
+                <XIcon className="size-4 shrink-0" strokeWidth={2.5} />
+              </button>
+            </div>
+          )}
+        </div>
 
         {!isDataLoading && (
           <div className="flex gap-1.5">

src/components/TopicDetail/TopicDetail.tsx

@@ -93,6 +93,7 @@ type TopicDetailProps = {
 
   wrapperClassName?: string;
   overlayClassName?: string;
+  closeButtonClassName?: string;
   onClose?: () => void;
   shouldCloseOnBackdropClick?: boolean;
   shouldCloseOnEscape?: boolean;
@@ -106,6 +107,7 @@ export function TopicDetail(props: TopicDetailProps) {
     renderer = 'balsamiq',
     wrapperClassName,
     overlayClassName,
+    closeButtonClassName,
     onClose,
     shouldCloseOnBackdropClick = true,
     shouldCloseOnEscape = true,
@@ -449,7 +451,10 @@ export function TopicDetail(props: TopicDetailProps) {
                   <button
                     type="button"
                     id="close-topic"
-                    className="flex items-center gap-1.5 rounded-lg bg-gray-200 px-1.5 py-1 text-xs text-black hover:bg-gray-300 hover:text-gray-900"
+                    className={cn(
+                      'flex items-center gap-1.5 rounded-lg bg-gray-200 px-1.5 py-1 text-xs text-black hover:bg-gray-300 hover:text-gray-900',
+                      closeButtonClassName,
+                    )}
                     onClick={handleClose}
                   >
                     <X className="size-4" />