From eee33433d9965dc0cec45e5f3f5fbac0a7ae9931 Mon Sep 17 00:00:00 2001 From: Frederick Legaspi Date: Sun, 2 Nov 2025 10:32:56 -0500 Subject: [PATCH 1/9] fix: resolve TypeScript error in theme-provider test - Fix 'children' prop missing error by passing undefined instead of empty - All 11 tests still passing - Resolves TypeScript compilation error --- .../components/theme-provider.test.tsx | 136 ++++++++++++++++++ 1 file changed, 136 insertions(+) create mode 100644 src/__tests__/components/theme-provider.test.tsx diff --git a/src/__tests__/components/theme-provider.test.tsx b/src/__tests__/components/theme-provider.test.tsx new file mode 100644 index 0000000..fb63c7a --- /dev/null +++ b/src/__tests__/components/theme-provider.test.tsx @@ -0,0 +1,136 @@ +import { render, screen } from '@testing-library/react'; +import { ThemeProvider } from '@/components/theme-provider'; +import { useTheme } from 'next-themes'; + +// Mock next-themes +jest.mock('next-themes', () => ({ + ThemeProvider: ({ children }: { children: React.ReactNode }) =>
{children}
, + useTheme: jest.fn(), +})); + +describe('ThemeProvider', () => { + beforeEach(() => { + jest.clearAllMocks(); + }); + + describe('Rendering', () => { + it('should render children', () => { + render( + +
Test Child
+ + ); + + expect(screen.getByTestId('child')).toBeInTheDocument(); + expect(screen.getByText('Test Child')).toBeInTheDocument(); + }); + + it('should wrap children with NextThemesProvider', () => { + render( + +
Content
+ + ); + + expect(screen.getByTestId('theme-provider')).toBeInTheDocument(); + }); + + it('should render multiple children', () => { + render( + +
Child 1
+
Child 2
+
Child 3
+ + ); + + expect(screen.getByTestId('child-1')).toBeInTheDocument(); + expect(screen.getByTestId('child-2')).toBeInTheDocument(); + expect(screen.getByTestId('child-3')).toBeInTheDocument(); + }); + }); + + describe('Props Forwarding', () => { + it('should forward attribute prop to NextThemesProvider', () => { + const { container } = render( + +
Content
+ + ); + + expect(container).toBeInTheDocument(); + }); + + it('should forward defaultTheme prop to NextThemesProvider', () => { + const { container } = render( + +
Content
+ + ); + + expect(container).toBeInTheDocument(); + }); + + it('should forward enableSystem prop to NextThemesProvider', () => { + const { container } = render( + +
Content
+ + ); + + expect(container).toBeInTheDocument(); + }); + + it('should forward disableTransitionOnChange prop to NextThemesProvider', () => { + const { container } = render( + +
Content
+ + ); + + expect(container).toBeInTheDocument(); + }); + + it('should forward multiple props simultaneously', () => { + const { container } = render( + +
Content
+ + ); + + expect(container).toBeInTheDocument(); + }); + }); + + describe('Integration', () => { + it('should work with nested components', () => { + const NestedComponent = () =>
Nested
; + + render( + +
+ +
+ + ); + + expect(screen.getByTestId('nested')).toBeInTheDocument(); + }); + + it('should not throw when children is null', () => { + expect(() => { + render({null}); + }).not.toThrow(); + }); + + it('should handle empty children', () => { + const { container } = render({undefined}); + expect(container).toBeInTheDocument(); + }); + }); +}); From d36b0b9977bf0b0a3d307ef203f188758e5e1d15 Mon Sep 17 00:00:00 2001 From: Frederick Legaspi Date: Sun, 2 Nov 2025 14:32:19 -0500 Subject: [PATCH 2/9] test: add tests for empty conversation saving (TDD Red) TDD Red Phase - Failing tests: - conversation-title: Edit button should show for new conversations - page: Should allow editing title without messages - page: Should save empty conversation when title is changed These tests expect: 1. Edit button visible on new/empty conversations 2. Title editable before sending first message 3. Conversation saved when title is edited (even with no messages) Tests currently failing - implementation to follow --- src/__tests__/app/page.test.tsx | 40 +++++++++++++++++++ .../components/conversation-title.test.tsx | 5 ++- 2 files changed, 43 insertions(+), 2 deletions(-) diff --git a/src/__tests__/app/page.test.tsx b/src/__tests__/app/page.test.tsx index 0072e86..44fbbbc 100644 --- a/src/__tests__/app/page.test.tsx +++ b/src/__tests__/app/page.test.tsx @@ -400,4 +400,44 @@ describe('Main Page Component', () => { expect(screen.getByPlaceholderText(/ask a question/i)).toBeInTheDocument(); }); }); + + describe('Empty Conversation Saving', () => { + it('should allow editing title on new conversation without messages', async () => { + const user = userEvent.setup(); + renderPage(); + + // Find and click the edit title button + const editButton = screen.getByRole('button', { name: /edit conversation title/i }); + expect(editButton).toBeInTheDocument(); + + await user.click(editButton); + + // Input should appear + const titleInput = screen.getByRole('textbox'); + expect(titleInput).toBeInTheDocument(); + }); + + it('should save empty conversation when title is changed', async () => { + const user = userEvent.setup(); + const { saveConversation } = require('@/lib/storage'); + renderPage(); + + // Edit title on empty conversation + const editButton = screen.getByRole('button', { name: /edit conversation title/i }); + await user.click(editButton); + + const titleInput = screen.getByRole('textbox'); + await user.clear(titleInput); + await user.type(titleInput, 'My Empty Conversation'); + + // Save the title + const saveButton = screen.getByRole('button', { name: /save title/i }); + await user.click(saveButton); + + // Conversation should be saved even without messages + await waitFor(() => { + expect(saveConversation).toHaveBeenCalled(); + }); + }); + }); }); diff --git a/src/__tests__/components/conversation-title.test.tsx b/src/__tests__/components/conversation-title.test.tsx index 192875e..65f230c 100644 --- a/src/__tests__/components/conversation-title.test.tsx +++ b/src/__tests__/components/conversation-title.test.tsx @@ -30,9 +30,10 @@ describe('ConversationTitle', () => { expect(editButton).toBeInTheDocument(); }); - it('hides edit button for new conversations', () => { + it('shows edit button for new conversations (allows early title editing)', () => { render(); - expect(screen.queryByRole('button', { name: /edit conversation title/i })).not.toBeInTheDocument(); + const editButton = screen.getByRole('button', { name: /edit conversation title/i }); + expect(editButton).toBeInTheDocument(); }); it('updates displayed title when prop changes', () => { From 4452df1ecc8979f43061fbb2b67e556a5518f0be Mon Sep 17 00:00:00 2001 From: Frederick Legaspi Date: Sun, 2 Nov 2025 14:37:55 -0500 Subject: [PATCH 3/9] feat: allow saving and editing empty conversations (TDD Green) TDD Green Phase - Implementation: - Remove edit button conditional in conversation-title.tsx - Create conversation ID when title changes on empty conversation - Save empty conversations to localStorage - Update auto-save to support conversations without messages Features: - Edit button now visible on new conversations - Title can be changed before sending first message - Conversations persist even with no messages/files Testing: - Updated conversation-title.test.tsx selector to be more specific - Updated page.test.tsx to check localStorage directly - All 508 tests passing --- src/__tests__/app/page.test.tsx | 12 ++++--- src/app/page.tsx | 46 +++++++++++++++++---------- src/components/conversation-title.tsx | 32 +++++++++---------- 3 files changed, 52 insertions(+), 38 deletions(-) diff --git a/src/__tests__/app/page.test.tsx b/src/__tests__/app/page.test.tsx index 44fbbbc..f5a3b48 100644 --- a/src/__tests__/app/page.test.tsx +++ b/src/__tests__/app/page.test.tsx @@ -412,21 +412,20 @@ describe('Main Page Component', () => { await user.click(editButton); - // Input should appear - const titleInput = screen.getByRole('textbox'); + // Input should appear - use getByDisplayValue to be more specific + const titleInput = screen.getByDisplayValue('New Conversation'); expect(titleInput).toBeInTheDocument(); }); it('should save empty conversation when title is changed', async () => { const user = userEvent.setup(); - const { saveConversation } = require('@/lib/storage'); renderPage(); // Edit title on empty conversation const editButton = screen.getByRole('button', { name: /edit conversation title/i }); await user.click(editButton); - const titleInput = screen.getByRole('textbox'); + const titleInput = screen.getByDisplayValue('New Conversation'); await user.clear(titleInput); await user.type(titleInput, 'My Empty Conversation'); @@ -436,7 +435,10 @@ describe('Main Page Component', () => { // Conversation should be saved even without messages await waitFor(() => { - expect(saveConversation).toHaveBeenCalled(); + const conversations = JSON.parse(localStorage.getItem('notechat-conversations') || '[]'); + expect(conversations.length).toBeGreaterThan(0); + expect(conversations[0].title).toBe('My Empty Conversation'); + expect(conversations[0].messages).toEqual([]); }); }); }); diff --git a/src/app/page.tsx b/src/app/page.tsx index 4e0a61a..520a8c4 100644 --- a/src/app/page.tsx +++ b/src/app/page.tsx @@ -113,21 +113,24 @@ export default function Home() { // Auto-save conversation when messages or sources change useEffect(() => { - if (messages.length > 0 && isLoaded) { - const conversation = createConversation(messages, files, aiTheme || undefined); - - // If we don't have a current conversation ID, set it - if (!currentConversationId) { - setCurrentConversationIdState(conversation.id); - setCurrentConversationId(conversation.id); - setConversationTitle(conversation.title); // Set auto-generated title - } else { - // Update existing conversation with current ID and title - conversation.id = currentConversationId; - conversation.title = conversationTitle; // Preserve user's title + if (isLoaded) { + // Save if we have messages OR if we have a conversation ID (empty conversation with title) + if (messages.length > 0 || currentConversationId) { + const conversation = createConversation(messages, files, aiTheme || undefined); + + // If we don't have a current conversation ID, set it + if (!currentConversationId) { + setCurrentConversationIdState(conversation.id); + setCurrentConversationId(conversation.id); + setConversationTitle(conversation.title); // Set auto-generated title + } else { + // Update existing conversation with current ID and title + conversation.id = currentConversationId; + conversation.title = conversationTitle; // Preserve user's title + } + + saveConversation(conversation); } - - saveConversation(conversation); } }, [messages, files, aiTheme, currentConversationId, conversationTitle, isLoaded]); @@ -187,8 +190,19 @@ export default function Home() { const handleTitleChange = (newTitle: string) => { setConversationTitle(newTitle); - // Update in storage if we have a conversation ID - if (currentConversationId) { + // If we don't have a conversation ID yet, create one and save the empty conversation + if (!currentConversationId) { + const conversation = createConversation(messages, files, aiTheme || undefined, newTitle); + setCurrentConversationIdState(conversation.id); + setCurrentConversationId(conversation.id); + saveConversation(conversation); + + toast({ + title: 'Conversation Created', + description: `Created "${newTitle}"`, + }); + } else { + // Update existing conversation title updateConversationTitle(currentConversationId, newTitle); toast({ diff --git a/src/components/conversation-title.tsx b/src/components/conversation-title.tsx index 70c835e..872c238 100644 --- a/src/components/conversation-title.tsx +++ b/src/components/conversation-title.tsx @@ -98,23 +98,21 @@ export function ConversationTitle({ title, onTitleChange, isNewConversation }: C

{displayTitle}

- {!isNewConversation && ( - - - - - -

Edit conversation title

- - - )} + + + + + +

Edit conversation title

+ + ); From 1c518aeb06ae641806ea8e6637d481c4e5d75681 Mon Sep 17 00:00:00 2001 From: Frederick Legaspi Date: Sun, 2 Nov 2025 14:43:27 -0500 Subject: [PATCH 4/9] fix: ensure conversation title updates in header when changed Issue: Title was saving to localStorage but not updating in the header Root cause: Auto-save useEffect was calling createConversation without passing the conversationTitle parameter, causing it to overwrite the user's title with an auto-generated one. Solution: Pass conversationTitle to createConversation when updating an existing conversation, ensuring the user's custom title is preserved in both storage and the UI. All tests passing. --- src/app/page.tsx | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) diff --git a/src/app/page.tsx b/src/app/page.tsx index 520a8c4..87ad6de 100644 --- a/src/app/page.tsx +++ b/src/app/page.tsx @@ -116,20 +116,19 @@ export default function Home() { if (isLoaded) { // Save if we have messages OR if we have a conversation ID (empty conversation with title) if (messages.length > 0 || currentConversationId) { - const conversation = createConversation(messages, files, aiTheme || undefined); - - // If we don't have a current conversation ID, set it + // If we don't have a current conversation ID, create new one with auto-generated title if (!currentConversationId) { + const conversation = createConversation(messages, files, aiTheme || undefined); setCurrentConversationIdState(conversation.id); setCurrentConversationId(conversation.id); setConversationTitle(conversation.title); // Set auto-generated title + saveConversation(conversation); } else { // Update existing conversation with current ID and title + const conversation = createConversation(messages, files, aiTheme || undefined, conversationTitle); conversation.id = currentConversationId; - conversation.title = conversationTitle; // Preserve user's title + saveConversation(conversation); } - - saveConversation(conversation); } } }, [messages, files, aiTheme, currentConversationId, conversationTitle, isLoaded]); From bfedde7b698efab19aaab48ff5a5541d80cd2be6 Mon Sep 17 00:00:00 2001 From: Frederick Legaspi Date: Sun, 2 Nov 2025 14:47:22 -0500 Subject: [PATCH 5/9] fix: remove conversationTitle from auto-save dependencies Issue: Title would revert to 'New Conversation' after being changed, even though it saved correctly in localStorage/history. Root Cause: conversationTitle was in the auto-save useEffect dependency array, causing it to re-run every time the title changed. This triggered the auto-save logic which would sometimes overwrite the user's custom title with an auto-generated one. Solution: Remove conversationTitle from dependencies since title updates are already handled by handleTitleChange and updateConversationTitle. The auto-save should only trigger on content changes (messages, files, aiTheme), not title changes. All tests passing. --- src/app/page.tsx | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/src/app/page.tsx b/src/app/page.tsx index 87ad6de..09d8a4c 100644 --- a/src/app/page.tsx +++ b/src/app/page.tsx @@ -131,7 +131,9 @@ export default function Home() { } } } - }, [messages, files, aiTheme, currentConversationId, conversationTitle, isLoaded]); + // Note: conversationTitle is NOT in dependencies because title updates are handled by handleTitleChange + // eslint-disable-next-line react-hooks/exhaustive-deps + }, [messages, files, aiTheme, currentConversationId, isLoaded]); const handleNewConversation = () => { // Save current conversation before creating new one From 1c32e145b3f713fbd192faddaa2472a28003bdb6 Mon Sep 17 00:00:00 2001 From: Frederick Legaspi Date: Sun, 2 Nov 2025 14:56:35 -0500 Subject: [PATCH 6/9] fix: use ref to track conversation title and prevent stale closure Issue: Title would update in localStorage but revert to 'New Conversation' in the header after being changed. Root Cause: The auto-save useEffect was using a stale conversationTitle value from closure. Since conversationTitle was removed from dependencies to prevent infinite loops, the effect closure captured the old value and kept using 'New Conversation' instead of the updated title. Solution: Introduce conversationTitleRef to track the current title value. This ref is updated immediately when the title changes and is always current when the auto-save effect runs. The ref bypasses React's batching and closure staleness issues. Changes: - Added conversationTitleRef to track current title - Update ref in all places where setConversationTitle is called - Auto-save effect now uses conversationTitleRef.current for latest value - handleTitleChange also saves full conversation to ensure sync All tests passing (17 passed, 13 skipped). --- src/app/page.tsx | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/src/app/page.tsx b/src/app/page.tsx index 09d8a4c..1855d66 100644 --- a/src/app/page.tsx +++ b/src/app/page.tsx @@ -52,6 +52,7 @@ export default function Home() { const [editingMessageId, setEditingMessageId] = useState(null); const [editedContent, setEditedContent] = useState(''); const searchInputRef = useRef(null); + const conversationTitleRef = useRef('New Conversation'); const { toast } = useToast(); const { setTheme } = useTheme(); const { streamingText, isStreaming, streamResponse, reset } = useStreamingResponse(); @@ -94,6 +95,7 @@ export default function Home() { const savedConversation = loadConversation(savedConversationId); if (savedConversation) { setConversationTitle(savedConversation.title); + conversationTitleRef.current = savedConversation.title; } } @@ -122,10 +124,11 @@ export default function Home() { setCurrentConversationIdState(conversation.id); setCurrentConversationId(conversation.id); setConversationTitle(conversation.title); // Set auto-generated title + conversationTitleRef.current = conversation.title; // Update ref saveConversation(conversation); } else { - // Update existing conversation with current ID and title - const conversation = createConversation(messages, files, aiTheme || undefined, conversationTitle); + // Update existing conversation with current ID and title from ref + const conversation = createConversation(messages, files, aiTheme || undefined, conversationTitleRef.current); conversation.id = currentConversationId; saveConversation(conversation); } @@ -153,6 +156,7 @@ export default function Home() { setCurrentConversationIdState(null); setCurrentConversationId(null); setConversationTitle('New Conversation'); + conversationTitleRef.current = 'New Conversation'; // Switch to sources tab if no sources if (files.length === 0) { @@ -181,6 +185,7 @@ export default function Home() { setCurrentConversationIdState(conversation.id); setCurrentConversationId(conversation.id); setConversationTitle(conversation.title); + conversationTitleRef.current = conversation.title; toast({ title: 'Conversation Loaded', @@ -190,6 +195,7 @@ export default function Home() { const handleTitleChange = (newTitle: string) => { setConversationTitle(newTitle); + conversationTitleRef.current = newTitle; // Update ref immediately // If we don't have a conversation ID yet, create one and save the empty conversation if (!currentConversationId) { @@ -203,9 +209,14 @@ export default function Home() { description: `Created "${newTitle}"`, }); } else { - // Update existing conversation title + // Update existing conversation title in storage updateConversationTitle(currentConversationId, newTitle); + // Also update the full conversation to ensure title is synced + const conversation = createConversation(messages, files, aiTheme || undefined, newTitle); + conversation.id = currentConversationId; + saveConversation(conversation); + toast({ title: 'Title Updated', description: `Conversation renamed to "${newTitle}"`, From c3bf9d9e6ce1699d912566f3087144123c515c59 Mon Sep 17 00:00:00 2001 From: Frederick Legaspi Date: Sun, 2 Nov 2025 15:01:07 -0500 Subject: [PATCH 7/9] fix: update title ref before setting conversation ID to prevent race condition Issue: When loading a conversation from history, the title would not update in the header (e.g., loading 'Test 5' would still show 'New Conversation'). Root Cause: In handleLoadConversation, conversationTitleRef was being updated AFTER setCurrentConversationId. This caused the auto-save effect (triggered by the ID change) to run with the old/stale ref value before the ref was updated with the new title. Solution: Update the title and ref BEFORE setting the conversation ID. This ensures conversationTitleRef.current has the correct value when the auto-save effect runs. Order of operations now: 1. Set title state and ref (with new title) 2. Set conversation ID (triggers auto-save) 3. Auto-save uses the already-updated ref value All tests passing. --- src/app/page.tsx | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/src/app/page.tsx b/src/app/page.tsx index 1855d66..67fd664 100644 --- a/src/app/page.tsx +++ b/src/app/page.tsx @@ -182,10 +182,11 @@ export default function Home() { setMessages(conversation.messages); setFiles(conversation.sources); setAiTheme(conversation.aiTheme || null); - setCurrentConversationIdState(conversation.id); - setCurrentConversationId(conversation.id); + // Update title BEFORE setting conversation ID to avoid stale ref in auto-save effect setConversationTitle(conversation.title); conversationTitleRef.current = conversation.title; + setCurrentConversationIdState(conversation.id); + setCurrentConversationId(conversation.id); toast({ title: 'Conversation Loaded', From 4719410c7fdd7f2c9577c8ba41c873cb9d126122 Mon Sep 17 00:00:00 2001 From: Frederick Legaspi Date: Sun, 2 Nov 2025 15:05:55 -0500 Subject: [PATCH 8/9] refactor: auto-sync conversationTitle ref with state using useEffect Simplification: Instead of manually updating conversationTitleRef.current in multiple places, use a useEffect to automatically keep the ref in sync with the conversationTitle state. This ensures the ref is always current and reduces code duplication. Benefits: - Single source of truth for title updates - Eliminates manual ref assignments scattered throughout the code - Prevents missing ref updates when title state changes - Cleaner and more maintainable code The useEffect runs whenever conversationTitle changes, ensuring conversationTitleRef.current is always up-to-date when the auto-save effect needs it. All tests passing (17 passed, 13 skipped). --- src/app/page.tsx | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/src/app/page.tsx b/src/app/page.tsx index 67fd664..02ca114 100644 --- a/src/app/page.tsx +++ b/src/app/page.tsx @@ -57,6 +57,11 @@ export default function Home() { const { setTheme } = useTheme(); const { streamingText, isStreaming, streamResponse, reset } = useStreamingResponse(); + // Keep ref in sync with state + useEffect(() => { + conversationTitleRef.current = conversationTitle; + }, [conversationTitle]); + // Load persisted data on mount useEffect(() => { const savedMessages = loadMessages(); @@ -95,7 +100,6 @@ export default function Home() { const savedConversation = loadConversation(savedConversationId); if (savedConversation) { setConversationTitle(savedConversation.title); - conversationTitleRef.current = savedConversation.title; } } @@ -124,7 +128,6 @@ export default function Home() { setCurrentConversationIdState(conversation.id); setCurrentConversationId(conversation.id); setConversationTitle(conversation.title); // Set auto-generated title - conversationTitleRef.current = conversation.title; // Update ref saveConversation(conversation); } else { // Update existing conversation with current ID and title from ref @@ -156,7 +159,6 @@ export default function Home() { setCurrentConversationIdState(null); setCurrentConversationId(null); setConversationTitle('New Conversation'); - conversationTitleRef.current = 'New Conversation'; // Switch to sources tab if no sources if (files.length === 0) { @@ -184,7 +186,6 @@ export default function Home() { setAiTheme(conversation.aiTheme || null); // Update title BEFORE setting conversation ID to avoid stale ref in auto-save effect setConversationTitle(conversation.title); - conversationTitleRef.current = conversation.title; setCurrentConversationIdState(conversation.id); setCurrentConversationId(conversation.id); @@ -196,7 +197,6 @@ export default function Home() { const handleTitleChange = (newTitle: string) => { setConversationTitle(newTitle); - conversationTitleRef.current = newTitle; // Update ref immediately // If we don't have a conversation ID yet, create one and save the empty conversation if (!currentConversationId) { From 1be54df3ece8f4204dc94a174c070ec24accf189 Mon Sep 17 00:00:00 2001 From: Frederick Legaspi Date: Sun, 2 Nov 2025 15:08:39 -0500 Subject: [PATCH 9/9] docs: add issue documentation for conversation title UI update bug Issue: Title updates in localStorage and sidebar but not in header until page refresh. Documented attempted fixes, suspected root causes, and possible solutions for future debugging. Status: Open - requires further investigation --- .../conversation-title-not-updating-in-ui.md | 160 ++++++++++++++++++ 1 file changed, 160 insertions(+) create mode 100644 docs/04-development/issues/conversation-title-not-updating-in-ui.md diff --git a/docs/04-development/issues/conversation-title-not-updating-in-ui.md b/docs/04-development/issues/conversation-title-not-updating-in-ui.md new file mode 100644 index 0000000..03a5f65 --- /dev/null +++ b/docs/04-development/issues/conversation-title-not-updating-in-ui.md @@ -0,0 +1,160 @@ +# Issue: Conversation Title Not Updating in UI + +**Status:** Open +**Priority:** High +**Date Reported:** November 2, 2025 +**Branch:** feat/save-empty-conversations + +## Problem Description + +When updating a conversation title or loading a conversation from history, the title displays correctly in the sidebar conversation history but does NOT update in the main header until a full page refresh. + +## Steps to Reproduce + +### Scenario 1: New Conversation Title Update +1. Click "New Conversation" button +2. Click "Edit conversation title" button +3. Change title to "Research 1" +4. Click save (checkmark button) +5. **Expected:** Header shows "Research 1" +6. **Actual:** Header still shows "New Conversation" +7. Title shows correctly in sidebar history +8. Full page refresh (Ctrl+R) shows correct title + +### Scenario 2: Load Existing Conversation +1. Have existing conversation titled "Test 5" +2. Click on "Test 5" in conversation history sidebar +3. **Expected:** Header shows "Test 5" +4. **Actual:** Header still shows "New Conversation" (or previous title) +5. Title shows correctly in sidebar history +6. Full page refresh (Ctrl+R) shows correct title + +## Current Implementation + +### State Management +- `conversationTitle` state is used for the title +- `conversationTitleRef` ref is used to prevent stale closures in auto-save effect +- `useEffect` syncs ref with state: `conversationTitleRef.current = conversationTitle` + +### Title Display +```tsx + +``` + +### What Works +- Title saves correctly to localStorage ✅ +- Title displays correctly in conversation history sidebar ✅ +- Title displays correctly after full page refresh ✅ +- All tests pass (17 passed, 13 skipped) ✅ + +### What Doesn't Work +- Title does not update in header immediately after change ❌ +- Title does not update in header when loading conversation ❌ + +## Technical Details + +### Attempted Fixes +1. **Removed conversationTitle from auto-save dependencies** - Prevented infinite loops but created stale closure issue +2. **Added conversationTitleRef** - Helped with auto-save but didn't fix UI update +3. **Fixed order of state updates** - Set title before conversation ID to prevent race conditions +4. **Auto-sync ref with useEffect** - Simplified code but didn't fix UI update +5. **Save full conversation in handleTitleChange** - Ensured localStorage consistency + +### Suspected Root Causes +1. **React State Batching** - Multiple state updates may be batched, causing UI to not reflect latest value +2. **Component Re-render Issue** - ChatHeader component may not be re-rendering when conversationTitle changes +3. **State Update Timing** - Auto-save effect may be running and overwriting title after it's set +4. **Closure Capture** - Some effect or callback may have captured old title value + +## Files Involved +- `src/app/page.tsx` - Main page component with title state management +- `src/components/chat-header.tsx` - Header component that displays title +- `src/components/conversation-title.tsx` - Title editing component +- `src/lib/storage.ts` - localStorage functions for saving conversations + +## Debugging Suggestions + +1. **Add console logs** to track state changes: + ```typescript + useEffect(() => { + console.log('Title state changed:', conversationTitle); + }, [conversationTitle]); + ``` + +2. **Check ChatHeader component** - Ensure it's not memoized incorrectly or has stale props + +3. **Verify ConversationTitle component** - Check if it's updating its internal state correctly + +4. **Use React DevTools** - Inspect component tree to see if conversationTitle prop is updating + +5. **Check for stale closures** - Look for any callbacks or effects that might capture old title + +## Possible Solutions to Try + +### Solution 1: Force Re-render +```typescript +const [, forceUpdate] = useReducer(x => x + 1, 0); + +const handleTitleChange = (newTitle: string) => { + setConversationTitle(newTitle); + forceUpdate(); // Force component re-render + // ... rest of logic +}; +``` + +### Solution 2: Use Callback Ref Pattern +```typescript +const titleRef = useCallback((node) => { + if (node) { + node.textContent = conversationTitle; + } +}, [conversationTitle]); +``` + +### Solution 3: Direct DOM Manipulation (Not Recommended) +```typescript +useEffect(() => { + const titleElement = document.querySelector('[data-conversation-title]'); + if (titleElement) { + titleElement.textContent = conversationTitle; + } +}, [conversationTitle]); +``` + +### Solution 4: Check Component Memoization +- Ensure ChatHeader is not wrapped in `React.memo()` without proper dependencies +- Check if ConversationTitle has `useMemo` or `useCallback` issues + +### Solution 5: Separate Title State from Auto-Save +- Completely decouple title updates from auto-save logic +- Have title updates go through a different path than message/file updates + +## Related Code Commits + +1. `d36b0b9` - test: add tests for empty conversation saving (TDD Red) +2. `4452df1` - feat: allow saving and editing empty conversations (TDD Green) +3. `1c518ae` - fix: ensure conversation title updates in header when changed +4. `bfedde7` - fix: remove conversationTitle from auto-save dependencies +5. `1c32e14` - fix: use ref to track conversation title and prevent stale closure +6. `c3bf9d9` - fix: update title ref before setting conversation ID to prevent race condition +7. `4719410` - refactor: auto-sync conversationTitle ref with state using useEffect + +## Testing Notes + +All unit tests pass, but the visual UI update is not happening. This suggests the issue is related to React's rendering cycle rather than the underlying logic. + +## Next Steps + +1. Add detailed console logging to track state changes +2. Inspect ChatHeader and ConversationTitle components for rendering issues +3. Check React DevTools to see if props are updating +4. Consider if this is a React 19 or Next.js 15 specific issue +5. Try creating a minimal reproduction case + +## Workaround for Users + +**Current Workaround:** Refresh the page (F5 or Ctrl+R) after changing title or loading conversation.