export default function useMessages()

in src/hooks/useMessages.ts [31:65]

29 lines of code
2 McCabe index (conditional complexity)


export default function useMessages(initialState: MessageWithoutId[] = []) {
  const initialMsgs: Messages = useMemo(() => initialState.map((t) => makeMsg(t)), [initialState]);
  const [messages, setMessages] = useState(initialMsgs);

  const prependMsgs = useCallback((msgs: Messages) => {
    setMessages((prev: Messages) => [...msgs, ...prev]);
  }, []);

  const updateMsg = useCallback((id: MessageId, msg: MessageWithoutId) => {
    setMessages((prev) => prev.map((t) => (t._id === id ? makeMsg(msg, id) : t)));
  }, []);

  const appendMsg = useCallback((msg: MessageWithoutId) => {
    const newMsg = makeMsg(msg);
    setMessages((prev) => [...prev, newMsg]);
    return newMsg._id;
  }, []);

  const deleteMsg = useCallback((id: MessageId) => {
    setMessages((prev) => prev.filter((t) => t._id !== id));
  }, []);

  const resetList = useCallback((list = []) => {
    setMessages(list);
  }, []);

  return {
    messages,
    prependMsgs,
    appendMsg,
    updateMsg,
    deleteMsg,
    resetList,
  };
}