Function MessageSelector

src/components/MessageSelector.tsx:46–401

({
  messages,
  onPreRestore,
  onRestoreMessage,
  onRestoreCode,
  onSummarize,
  onClose,
  preselectedMessage
}: Props)

};
const MAX_VISIBLE_MESSAGES = 7;
export function MessageSelector({
  messages,
  onPreRestore,
  onRestoreMessage,
  onRestoreCode,
  onSummarize,
  onClose,
  preselectedMessage
}: Props): React.ReactNode {
  const fileHistory = useAppState(s => s.fileHistory);
  const [error, setError] = useState<string | undefined>(undefined);
  const isFileHistoryEnabled = fileHistoryEnabled();

  // Add current prompt as a virtual message
  const currentUUID = useMemo(randomUUID, []);
  const messageOptions = useMemo(() => [...messages.filter(selectableUserMessagesFilter), {
    ...createUserMessage({
      content: ''
    }),
    uuid: currentUUID
  } as UserMessage], [messages, currentUUID]);
  const [selectedIndex, setSelectedIndex] = useState(messageOptions.length - 1);

  // Orient the selected message as the middle of the visible options
  const firstVisibleIndex = Math.max(0, Math.min(selectedIndex - Math.floor(MAX_VISIBLE_MESSAGES / 2), messageOptions.length - MAX_VISIBLE_MESSAGES));
  const hasMessagesToSelect = messageOptions.length > 1;
  const [messageToRestore, setMessageToRestore] = useState<UserMessage | undefined>(preselectedMessage);
  const [diffStatsForRestore, setDiffStatsForRestore] = useState<DiffStats | undefined>(undefined);
  useEffect(() => {
    if (!preselectedMessage || !isFileHistoryEnabled) return;
    let cancelled = false;
    void fileHistoryGetDiffStats(fileHistory, preselectedMessage.uuid).then(stats => {
      if (!cancelled) setDiffStatsForRestore(stats);
    });
    return () => {
      cancelled = true;
    };
  }, [preselectedMessage, isFileHistoryEnabled, fileHistory]);
  const [isRestoring, setIsRestoring] = useState(false);
  const [restoringOption, setRestoringOption] = useState<RestoreOption | null>(null);
  const [selectedRestoreOption, setSelectedRestoreOption] = useState<RestoreOption>('both');
  // Per-option feedback state; Select's internal inputValues Map persists
  // per-option text independently, so sharing one variable would desync.
  const [summarizeFromFeedback, setSummarizeFromFeedback] = useState('');
  const [summarizeUpToFeedback, setSummarizeUpToFeedback] = useState('');

  // Generate options with summarize as input type for inline context
  function getRestoreOptions(canRestoreCode: boolean): OptionWithDescription<RestoreOption>[] {
    const baseOptions: OptionWithDescription<RestoreOption>[] = canRestoreCode ? [{
      value: 'both',
      label: 'Restore code and conversation'
    }, {
      value: 'conversation',
      label: 'Restore conversation'
    }, {
      value: 'code',
      label: 'Restore code'
    }] : [{