vault-frontend/src/hooks/node/useGrouppedComments.ts

import { useMemo } from 'react';

import { IComment } from '~/types';
import { groupCommentsByUser } from '~/utils/fn';

export const useGrouppedComments = (
  comments: IComment[],
  order: 'ASC' | 'DESC',
  lastSeen?: string,
) =>
  useMemo(
    () =>
      (order === 'DESC' ? [...comments].reverse() : comments).reduce(
        groupCommentsByUser(lastSeen),
        [],
      ),
    [comments, lastSeen, order],
  );