fix: Apply PR feedback for DismissibleUpsell component

- Changed from className to separate 'id' and 'className' props for better semantics
- Added i18n support for accessibility labels (aria-label and title)
- Fixed memory leak by adding mounted flag to prevent state updates after unmount
- Fixed race condition by sending dismiss message before hiding component
- Fixed inefficient array operations in webviewMessageHandler
- Added comprehensive test coverage for edge cases including:
  - Multiple rapid dismissals
  - Component unmounting during async operations
  - Invalid/malformed message handling
  - Proper message sending before unmount
- Added null checks for message data to handle edge cases gracefully

src/core/webview/webviewMessageHandler.ts

@@ -3000,20 +3000,26 @@ export const webviewMessageHandler = async (
 		}
 		case "dismissUpsell": {
 			if (message.upsellId) {
-				// Get current list of dismissed upsells
-				const dismissedUpsells = getGlobalState("dismissedUpsells") || []
+				try {
+					// Get current list of dismissed upsells
+					const dismissedUpsells = getGlobalState("dismissedUpsells") || []
 
-				// Add the new upsell ID if not already present
-				if (!dismissedUpsells.includes(message.upsellId)) {
-					const updatedList = [...dismissedUpsells, message.upsellId]
-					await updateGlobalState("dismissedUpsells", updatedList)
+					// Add the new upsell ID if not already present
+					let updatedList = dismissedUpsells
+					if (!dismissedUpsells.includes(message.upsellId)) {
+						updatedList = [...dismissedUpsells, message.upsellId]
+						await updateGlobalState("dismissedUpsells", updatedList)
+					}
+
+					// Send updated list back to webview (use the already computed updatedList)
+					await provider.postMessageToWebview({
+						type: "dismissedUpsells",
+						list: updatedList,
+					})
+				} catch (error) {
+					// Fail silently as per Bruno's comment - it's OK to fail silently in this case
+					provider.log(`Failed to dismiss upsell: ${error instanceof Error ? error.message : String(error)}`)
 				}
-
-				// Send updated list back to webview
-				await provider.postMessageToWebview({
-					type: "dismissedUpsells",
-					list: [...dismissedUpsells, message.upsellId],
-				})
 			}
 			break
 		}

webview-ui/src/components/common/DismissibleUpsell.tsx

@@ -1,11 +1,14 @@
-import { memo, ReactNode, useEffect, useState } from "react"
+import { memo, ReactNode, useEffect, useState, useRef } from "react"
 import styled from "styled-components"
 
 import { vscode } from "@src/utils/vscode"
+import { useAppTranslation } from "@src/i18n/TranslationContext"
 
 interface DismissibleUpsellProps {
 	/** Required unique identifier for this upsell */
-	className: string
+	id: string
+	/** Optional CSS class name for styling */
+	className?: string
 	/** Content to display inside the upsell */
 	children: ReactNode
 	/** Visual variant of the upsell */
@@ -84,38 +87,51 @@ const DismissIcon = () => (
 	</svg>
 )
 
-const DismissibleUpsell = memo(({ className, children, variant = "banner", onDismiss }: DismissibleUpsellProps) => {
+const DismissibleUpsell = memo(({ id, className, children, variant = "banner", onDismiss }: DismissibleUpsellProps) => {
+	const { t } = useAppTranslation()
 	const [isVisible, setIsVisible] = useState(true)
+	const isMountedRef = useRef(true)
 
 	useEffect(() => {
+		// Track mounted state
+		isMountedRef.current = true
+
 		// Request the current list of dismissed upsells from the extension
 		vscode.postMessage({ type: "getDismissedUpsells" })
 
 		// Listen for the response
 		const handleMessage = (event: MessageEvent) => {
+			// Only update state if component is still mounted
+			if (!isMountedRef.current) return
+
 			const message = event.data
-			if (message.type === "dismissedUpsells" && Array.isArray(message.list)) {
+			// Add null/undefined check for message
+			if (message && message.type === "dismissedUpsells" && Array.isArray(message.list)) {
 				// Check if this upsell has been dismissed
-				if (message.list.includes(className)) {
+				if (message.list.includes(id)) {
 					setIsVisible(false)
 				}
 			}
 		}
 
 		window.addEventListener("message", handleMessage)
-		return () => window.removeEventListener("message", handleMessage)
-	}, [className])
+		return () => {
+			isMountedRef.current = false
+			window.removeEventListener("message", handleMessage)
+		}
+	}, [id])
 
-	const handleDismiss = () => {
-		// Hide the upsell immediately
-		setIsVisible(false)
-
-		// Notify the extension to persist the dismissal
+	const handleDismiss = async () => {
+		// First notify the extension to persist the dismissal
+		// This ensures the message is sent even if the component unmounts quickly
 		vscode.postMessage({
 			type: "dismissUpsell",
-			upsellId: className,
+			upsellId: id,
 		})
 
+		// Then hide the upsell
+		setIsVisible(false)
+
 		// Call the optional callback
 		onDismiss?.()
 	}
@@ -131,8 +147,8 @@ const DismissibleUpsell = memo(({ className, children, variant = "banner", onDis
 			<DismissButton
 				$variant={variant}
 				onClick={handleDismiss}
-				aria-label="Dismiss"
-				title="Dismiss and don't show again">
+				aria-label={t("common:dismiss")}
+				title={t("common:dismissAndDontShowAgain")}>
 				<DismissIcon />
 			</DismissButton>
 		</UpsellContainer>

webview-ui/src/components/common/__tests__/DismissibleUpsell.spec.tsx

@@ -1,5 +1,5 @@
-import { render, screen, fireEvent, waitFor } from "@testing-library/react"
-import { describe, it, expect, vi, beforeEach } from "vitest"
+import { render, screen, fireEvent, waitFor, act } from "@testing-library/react"
+import { describe, it, expect, vi, beforeEach, afterEach } from "vitest"
 import DismissibleUpsell from "../DismissibleUpsell"
 
 // Mock the vscode API
@@ -10,14 +10,32 @@ vi.mock("@src/utils/vscode", () => ({
 	},
 }))
 
+// Mock the translation hook
+vi.mock("@src/i18n/TranslationContext", () => ({
+	useAppTranslation: () => ({
+		t: (key: string) => {
+			const translations: Record<string, string> = {
+				"common:dismiss": "Dismiss",
+				"common:dismissAndDontShowAgain": "Dismiss and don't show again",
+			}
+			return translations[key] || key
+		},
+	}),
+}))
+
 describe("DismissibleUpsell", () => {
 	beforeEach(() => {
 		mockPostMessage.mockClear()
+		vi.clearAllTimers()
+	})
+
+	afterEach(() => {
+		vi.clearAllTimers()
 	})
 
 	it("renders children content", () => {
 		render(
-			<DismissibleUpsell className="test-upsell">
+			<DismissibleUpsell id="test-upsell">
 				<div>Test content</div>
 			</DismissibleUpsell>,
 		)
@@ -27,7 +45,7 @@ describe("DismissibleUpsell", () => {
 
 	it("applies the correct variant styles", () => {
 		const { container, rerender } = render(
-			<DismissibleUpsell className="test-upsell" variant="banner">
+			<DismissibleUpsell id="test-upsell" variant="banner">
 				<div>Banner content</div>
 			</DismissibleUpsell>,
 		)
@@ -41,7 +59,7 @@ describe("DismissibleUpsell", () => {
 
 		// Re-render with default variant
 		rerender(
-			<DismissibleUpsell className="test-upsell" variant="default">
+			<DismissibleUpsell id="test-upsell" variant="default">
 				<div>Default content</div>
 			</DismissibleUpsell>,
 		)
@@ -55,7 +73,7 @@ describe("DismissibleUpsell", () => {
 
 	it("requests dismissed upsells list on mount", () => {
 		render(
-			<DismissibleUpsell className="test-upsell">
+			<DismissibleUpsell id="test-upsell">
 				<div>Test content</div>
 			</DismissibleUpsell>,
 		)
@@ -68,7 +86,7 @@ describe("DismissibleUpsell", () => {
 	it("hides the upsell when dismiss button is clicked", async () => {
 		const onDismiss = vi.fn()
 		const { container } = render(
-			<DismissibleUpsell className="test-upsell" onDismiss={onDismiss}>
+			<DismissibleUpsell id="test-upsell" onDismiss={onDismiss}>
 				<div>Test content</div>
 			</DismissibleUpsell>,
 		)
@@ -77,24 +95,24 @@ describe("DismissibleUpsell", () => {
 		const dismissButton = screen.getByRole("button", { name: /dismiss/i })
 		fireEvent.click(dismissButton)
 
-		// Check that the component is no longer visible
-		await waitFor(() => {
-			expect(container.firstChild).toBeNull()
-		})
-
-		// Check that the dismiss message was sent
+		// Check that the dismiss message was sent BEFORE hiding
 		expect(mockPostMessage).toHaveBeenCalledWith({
 			type: "dismissUpsell",
 			upsellId: "test-upsell",
 		})
 
+		// Check that the component is no longer visible
+		await waitFor(() => {
+			expect(container.firstChild).toBeNull()
+		})
+
 		// Check that the callback was called
 		expect(onDismiss).toHaveBeenCalled()
 	})
 
 	it("hides the upsell if it's in the dismissed list", async () => {
 		const { container } = render(
-			<DismissibleUpsell className="test-upsell">
+			<DismissibleUpsell id="test-upsell">
 				<div>Test content</div>
 			</DismissibleUpsell>,
 		)
@@ -116,7 +134,7 @@ describe("DismissibleUpsell", () => {
 
 	it("remains visible if not in the dismissed list", async () => {
 		render(
-			<DismissibleUpsell className="test-upsell">
+			<DismissibleUpsell id="test-upsell">
 				<div>Test content</div>
 			</DismissibleUpsell>,
 		)
@@ -138,7 +156,7 @@ describe("DismissibleUpsell", () => {
 
 	it("applies the className prop to the container", () => {
 		const { container } = render(
-			<DismissibleUpsell className="custom-class">
+			<DismissibleUpsell id="test-upsell" className="custom-class">
 				<div>Test content</div>
 			</DismissibleUpsell>,
 		)
@@ -148,7 +166,7 @@ describe("DismissibleUpsell", () => {
 
 	it("dismiss button has proper accessibility attributes", () => {
 		render(
-			<DismissibleUpsell className="test-upsell">
+			<DismissibleUpsell id="test-upsell">
 				<div>Test content</div>
 			</DismissibleUpsell>,
 		)
@@ -157,4 +175,131 @@ describe("DismissibleUpsell", () => {
 		expect(dismissButton).toHaveAttribute("aria-label", "Dismiss")
 		expect(dismissButton).toHaveAttribute("title", "Dismiss and don't show again")
 	})
+
+	// New edge case tests
+	it("handles multiple rapid dismissals of the same component", async () => {
+		const onDismiss = vi.fn()
+		render(
+			<DismissibleUpsell id="test-upsell" onDismiss={onDismiss}>
+				<div>Test content</div>
+			</DismissibleUpsell>,
+		)
+
+		const dismissButton = screen.getByRole("button", { name: /dismiss/i })
+
+		// Click multiple times rapidly
+		fireEvent.click(dismissButton)
+		fireEvent.click(dismissButton)
+		fireEvent.click(dismissButton)
+
+		// Should only send one message
+		expect(mockPostMessage).toHaveBeenCalledTimes(2) // 1 for getDismissedUpsells, 1 for dismissUpsell
+		expect(mockPostMessage).toHaveBeenCalledWith({
+			type: "dismissUpsell",
+			upsellId: "test-upsell",
+		})
+
+		// Callback should only be called once
+		expect(onDismiss).toHaveBeenCalledTimes(1)
+	})
+
+	it("does not update state after component unmounts", async () => {
+		const { unmount } = render(
+			<DismissibleUpsell id="test-upsell">
+				<div>Test content</div>
+			</DismissibleUpsell>,
+		)
+
+		// Unmount the component
+		unmount()
+
+		// Simulate receiving a message after unmount
+		const messageEvent = new MessageEvent("message", {
+			data: {
+				type: "dismissedUpsells",
+				list: ["test-upsell"],
+			},
+		})
+
+		// This should not cause any errors
+		act(() => {
+			window.dispatchEvent(messageEvent)
+		})
+
+		// No errors should be thrown
+		expect(true).toBe(true)
+	})
+
+	it("handles invalid/malformed messages gracefully", () => {
+		render(
+			<DismissibleUpsell id="test-upsell">
+				<div>Test content</div>
+			</DismissibleUpsell>,
+		)
+
+		// Send various malformed messages
+		const malformedMessages = [
+			{ type: "dismissedUpsells", list: null },
+			{ type: "dismissedUpsells", list: "not-an-array" },
+			{ type: "dismissedUpsells" }, // missing list
+			{ type: "wrongType", list: ["test-upsell"] },
+			null,
+			undefined,
+			"string-message",
+		]
+
+		malformedMessages.forEach((data) => {
+			const messageEvent = new MessageEvent("message", { data })
+			window.dispatchEvent(messageEvent)
+		})
+
+		// Component should still be visible
+		expect(screen.getByText("Test content")).toBeInTheDocument()
+	})
+
+	it("ensures message is sent before component unmounts on dismiss", async () => {
+		const { unmount } = render(
+			<DismissibleUpsell id="test-upsell">
+				<div>Test content</div>
+			</DismissibleUpsell>,
+		)
+
+		const dismissButton = screen.getByRole("button", { name: /dismiss/i })
+		fireEvent.click(dismissButton)
+
+		// Message should be sent immediately
+		expect(mockPostMessage).toHaveBeenCalledWith({
+			type: "dismissUpsell",
+			upsellId: "test-upsell",
+		})
+
+		// Unmount immediately after clicking
+		unmount()
+
+		// Message was already sent before unmount
+		expect(mockPostMessage).toHaveBeenCalledWith({
+			type: "dismissUpsell",
+			upsellId: "test-upsell",
+		})
+	})
+
+	it("uses separate id and className props correctly", () => {
+		const { container } = render(
+			<DismissibleUpsell id="unique-id" className="styling-class">
+				<div>Test content</div>
+			</DismissibleUpsell>,
+		)
+
+		// className should be applied to the container
+		expect(container.firstChild).toHaveClass("styling-class")
+
+		// When dismissed, should use the id, not className
+		const dismissButton = screen.getByRole("button", { name: /dismiss/i })
+		fireEvent.click(dismissButton)
+
+		expect(mockPostMessage).toHaveBeenCalledWith({
+			type: "dismissUpsell",
+			upsellId: "unique-id",
+		})
+	})
 })