Function useVotePost

packages/shared/src/hooks/vote/useVotePost.ts:38–187

({
  onMutate,
  variables,
}: UseVotePostProps = {})

};

const useVotePost = ({
  onMutate,
  variables,
}: UseVotePostProps = {}): UseVotePost => {
  const client = useQueryClient();
  const { user, showLogin } = useContext(AuthContext);
  const { logEvent } = useLogContext();
  const postLogEvent = usePostLogEvent();
  const { logOpts } = useActiveFeedContext();
  const defaultOnMutate: NonNullable<UseVoteProps['onMutate']> = ({
    id,
    vote,
  }: UseVoteMutationProps) => {
    const mutationHandler = voteMutationHandlers[vote];

    if (!mutationHandler) {
      return undefined;
    }

    const previousVote = client.getQueryData<PostData>(getPostByIdKey(id))?.post
      ?.userState?.vote;
    updateSinglePostCache(client, id, mutationHandler);

    return () => {
      if (typeof previousVote === 'undefined') {
        return;
      }

      const rollbackMutationHandler = voteMutationHandlers[previousVote];

      if (!rollbackMutationHandler) {
        return;
      }

      updateSinglePostCache(client, id, rollbackMutationHandler);
    };
  };

  const {
    upvote: upvotePost,
    downvote: downvotePost,
    cancelVote: cancelPostVote,
  } = useVote({
    onMutate: onMutate || defaultOnMutate,
    entity: UserVoteEntity.Post,
    variables,
  });

  const toggleUpvote: UseVotePost['toggleUpvote'] = useCallback(
    async ({ payload: post, origin, opts }) => {
      if (!post) {
        return;
      }

      if (!user) {
        showLogin({ trigger: AuthTriggers.Upvote });

        return;