fix(webview-ui): use crypto.randomUUID for searchFiles requestId; escape spaces for folder mentions and add coverage. Addresses review feedback by @daniel-lxs

webview-ui/src/components/chat/ChatTextArea.tsx

@@ -20,7 +20,7 @@ import {
 	SearchResult,
 } from "@src/utils/context-mentions"
 import { cn } from "@src/lib/utils"
-import { convertToMentionPath } from "@src/utils/path-mentions"
+import { convertToMentionPath, escapeSpaces } from "@src/utils/path-mentions"
 import { StandardTooltip } from "@src/components/ui"
 
 import Thumbnails from "../common/Thumbnails"
@@ -354,6 +354,12 @@ export const ChatTextArea = forwardRef<HTMLTextAreaElement, ChatTextAreaProps>(
 						folderPath = folderPath + "/"
 					}
 
+					// Escape spaces for display (match insertMention behavior)
+					let displayFolderPath = folderPath
+					if (displayFolderPath.includes(" ") && !displayFolderPath.includes("\\ ")) {
+						displayFolderPath = escapeSpaces(displayFolderPath)
+					}
+
 					// Manually build insertion without a trailing space (more deterministic than insertMention)
 					const original = textAreaRef.current.value
 					const beforeCursor = original.slice(0, cursorPosition)
@@ -371,9 +377,9 @@ export const ChatTextArea = forwardRef<HTMLTextAreaElement, ChatTextAreaProps>(
 						afterCursorContent = isAlphaNumSpace ? afterCursor.replace(/^[^\s]*/, "") : afterCursor
 					}
 
-					const updatedValue = beforeMention + "@" + folderPath + afterCursorContent
+					const updatedValue = beforeMention + "@" + displayFolderPath + afterCursorContent
 					const afterMentionPos =
-						(lastAtIndex !== -1 ? lastAtIndex : beforeCursor.length) + 1 + folderPath.length
+						(lastAtIndex !== -1 ? lastAtIndex : beforeCursor.length) + 1 + displayFolderPath.length
 
 					setInputValue(updatedValue)
 					setCursorPosition(afterMentionPos)
@@ -391,7 +397,8 @@ export const ChatTextArea = forwardRef<HTMLTextAreaElement, ChatTextAreaProps>(
 					setSearchQuery(nextQuery)
 
 					// Kick off a search to populate folder children
-					const reqId = Math.random().toString(36).substring(2, 9)
+					const reqId =
+						globalThis.crypto?.randomUUID?.() ?? `${Date.now()}-${Math.random().toString(36).slice(2)}`
 					setSearchRequestId(reqId)
 					setSearchLoading(true)
 					vscode.postMessage({
@@ -660,7 +667,9 @@ export const ChatTextArea = forwardRef<HTMLTextAreaElement, ChatTextAreaProps>(
 							// Set a timeout to debounce the search requests.
 							searchTimeoutRef.current = setTimeout(() => {
 								// Generate a request ID for this search.
-								const reqId = Math.random().toString(36).substring(2, 9)
+								const reqId =
+									globalThis.crypto?.randomUUID?.() ??
+									`${Date.now()}-${Math.random().toString(36).slice(2)}`
 								setSearchRequestId(reqId)
 								setSearchLoading(true)
 

webview-ui/src/components/chat/__tests__/ChatTextArea.folder-drilldown.spec.tsx

@@ -93,4 +93,37 @@ describe("ChatTextArea - folder drilldown behavior", () => {
 		expect(lastMsg.query).toBe("/src/")
 		expect(typeof lastMsg.requestId).toBe("string")
 	})
+
+	it("escapes spaces in input and sends unescaped query for folder with spaces", () => {
+		const setInputValue = vi.fn()
+
+		const { container } = render(<ChatTextArea {...defaultProps} setInputValue={setInputValue} />)
+
+		// Type to open the @-context menu and set a query
+		const textarea = container.querySelector("textarea")!
+		fireEvent.change(textarea, {
+			target: { value: "@m", selectionStart: 2 },
+		})
+
+		// Ensure our mocked ContextMenu rendered and captured props
+		expect(screen.getByTestId("context-menu")).toBeInTheDocument()
+		const props = lastContextMenuProps
+		expect(props).toBeTruthy()
+		expect(typeof props.onSelect).toBe("function")
+
+		// Simulate selecting a concrete folder with a space
+		props.onSelect(ContextMenuOptionType.Folder, "/my folder")
+
+		// The input should contain the escaped path and NO trailing space
+		expect(setInputValue).toHaveBeenCalled()
+		const finalValue2 = setInputValue.mock.calls.at(-1)?.[0]
+		expect(finalValue2).toBe("@/my\\ folder/")
+
+		// It should have kicked off a searchFiles request with unescaped query
+		const pm2 = vscode.postMessage as ReturnType<typeof vi.fn>
+		const lastMsg2 = pm2.mock.calls.at(-1)?.[0]
+		expect(lastMsg2).toMatchObject({ type: "searchFiles" })
+		expect(lastMsg2.query).toBe("/my folder/")
+		expect(typeof lastMsg2.requestId).toBe("string")
+	})
 })