chore(compass-assistant): add clear chat button COMPASS-9731

packages/compass-assistant/src/compass-assistant-drawer.tsx

@@ -1,8 +1,14 @@
-import React, { useContext } from 'react';
-import { DrawerSection } from '@mongodb-js/compass-components';
+import React, { useCallback, useContext } from 'react';
+import {
+  DrawerSection,
+  Icon,
+  IconButton,
+  showConfirmation,
+} from '@mongodb-js/compass-components';
 import { AssistantChat } from './assistant-chat';
 import {
   ASSISTANT_DRAWER_ID,
+  AssistantActionsContext,
   AssistantContext,
 } from './compass-assistant-provider';
 import { usePreference } from 'compass-preferences-model/provider';
@@ -16,9 +22,23 @@ export const CompassAssistantDrawer: React.FunctionComponent<{
   autoOpen?: boolean;
 }> = ({ autoOpen }) => {
   const chat = useContext(AssistantContext);
+  const { clearChat } = useContext(AssistantActionsContext);
 
   const enableAIAssistant = usePreference('enableAIAssistant');
 
+  const handleClearChat = useCallback(async () => {
+    const confirmed = await showConfirmation({
+      title: 'Clear this chat?',
+      description:
+        'The current chat will be cleared, and chat history will not be retrievable.',
+      buttonText: 'Clear chat',
+      variant: 'danger',
+    });
+    if (confirmed) {
+      clearChat();
+    }
+  }, [clearChat]);
+
   if (!enableAIAssistant) {
     return null;
   }
@@ -32,7 +52,27 @@ export const CompassAssistantDrawer: React.FunctionComponent<{
   return (
     <DrawerSection
       id={ASSISTANT_DRAWER_ID}
-      title="MongoDB Assistant"
+      title={
+        <div
+          style={{
+            display: 'flex',
+            alignItems: 'center',
+            justifyContent: 'space-between',
+          }}
+        >
+          <span>MongoDB Assistant</span>
+          <IconButton
+            aria-label="Clear chat"
+            onClick={() => {
+              void handleClearChat();
+            }}
+            title="Clear chat"
+            data-testid="assistant-clear-chat"
+          >
+            <Icon glyph="Eraser" />
+          </IconButton>
+        </div>
+      }
       label="MongoDB Assistant"
       glyph="Sparkle"
       autoOpen={autoOpen}

packages/compass-assistant/src/compass-assistant-provider.spec.tsx

@@ -4,6 +4,8 @@ import {
   screen,
   userEvent,
   waitFor,
+  waitForElementToBeRemoved,
+  within,
 } from '@mongodb-js/testing-library-compass';
 import {
   AssistantProvider,
@@ -40,6 +42,19 @@ const TestComponent: React.FunctionComponent<{
 };
 
 describe('AssistantProvider', function () {
+  const mockMessages: AssistantMessage[] = [
+    {
+      id: '1',
+      role: 'user',
+      parts: [{ type: 'text', text: 'Test message' }],
+    },
+    {
+      id: '2',
+      role: 'assistant',
+      parts: [{ type: 'text', text: 'Test assistant message' }],
+    },
+  ];
+
   it('always renders children', function () {
     render(<TestComponent chat={createMockChat({ messages: [] })} />, {
       preferences: { enableAIAssistant: true },
@@ -92,18 +107,6 @@ describe('AssistantProvider', function () {
     }
 
     it('displays messages in the chat feed', async function () {
-      const mockMessages: AssistantMessage[] = [
-        {
-          id: '1',
-          role: 'user',
-          parts: [{ type: 'text', text: 'Test message' }],
-        },
-        {
-          id: '2',
-          role: 'assistant',
-          parts: [{ type: 'text', text: 'Test assistant message' }],
-        },
-      ];
       const mockChat = createMockChat({ messages: mockMessages });
 
       await renderOpenAssistantDrawer(mockChat);
@@ -186,6 +189,66 @@ describe('AssistantProvider', function () {
         expect(screen.getByText('Hello assistant!')).to.exist;
       });
     });
+
+    describe('clear chat button', function () {
+      it('clears the chat when the user clicks and confirms', async function () {
+        const mockChat = createMockChat({ messages: mockMessages });
+
+        await renderOpenAssistantDrawer(mockChat);
+
+        const clearButton = screen.getByTestId('assistant-clear-chat');
+        userEvent.click(clearButton);
+
+        await waitFor(() => {
+          expect(screen.getByTestId('confirmation-modal')).to.exist;
+        });
+
+        // There should be messages in the chat
+        expect(screen.getByTestId('assistant-message-1')).to.exist;
+        expect(screen.getByTestId('assistant-message-2')).to.exist;
+
+        const modal = screen.getByTestId('confirmation-modal');
+        const confirmButton = within(modal).getByText('Clear chat');
+        userEvent.click(confirmButton);
+
+        await waitForElementToBeRemoved(() =>
+          screen.getByTestId('confirmation-modal')
+        );
+
+        expect(mockChat.messages).to.be.empty;
+        expect(screen.queryByTestId('assistant-message-1')).to.not.exist;
+        expect(screen.queryByTestId('assistant-message-2')).to.not.exist;
+      });
+
+      it('does not clear the chat when the user clicks the button and cancels', async function () {
+        const mockChat = createMockChat({ messages: mockMessages });
+
+        await renderOpenAssistantDrawer(mockChat);
+
+        const clearButton = screen.getByTestId('assistant-clear-chat');
+        userEvent.click(clearButton);
+
+        await waitFor(() => {
+          expect(screen.getByTestId('confirmation-modal')).to.exist;
+        });
+
+        // There should be messages in the chat
+        expect(screen.getByTestId('assistant-message-1')).to.exist;
+        expect(screen.getByTestId('assistant-message-2')).to.exist;
+
+        const modal = screen.getByTestId('confirmation-modal');
+        const cancelButton = within(modal).getByText('Cancel');
+        userEvent.click(cancelButton);
+
+        await waitForElementToBeRemoved(() =>
+          screen.getByTestId('confirmation-modal')
+        );
+
+        expect(mockChat.messages).to.deep.equal(mockMessages);
+        expect(screen.getByTestId('assistant-message-1')).to.exist;
+        expect(screen.getByTestId('assistant-message-2')).to.exist;
+      });
+    });
   });
 
   describe('CompassAssistantProvider', function () {

packages/compass-assistant/src/compass-assistant-provider.tsx

@@ -32,10 +32,12 @@ type AssistantActionsContextType = {
     namespace: string;
     explainPlan: string;
   }) => void;
+  clearChat: () => void;
 };
 export const AssistantActionsContext =
   createContext<AssistantActionsContextType>({
     interpretExplainPlan: () => {},
+    clearChat: () => {},
   });
 
 export function useAssistantActions(): AssistantActionsContextType & {
@@ -70,6 +72,9 @@ export const AssistantProvider: React.FunctionComponent<
         {}
       );
     },
+    clearChat: () => {
+      chat.messages = [];
+    },
   });
   const { openDrawer } = useDrawerActions();