function updateActivityCommentReactions()

in src/components/activity-stream/activity__stream-helper.ts [29:82]

• 47 lines of code
• 8 McCabe index (conditional complexity)

function updateActivityCommentReactions({
  comment,
  currentUser,
  reaction,
}: {
  comment: IssueComment;
  currentUser: User;
  reaction: Reaction;
}) {
  const _comment: IssueComment = {...comment};
  _comment.reactions = _comment?.reactions || [];
  _comment.reactionOrder = _comment.reactionOrder || '';

  const existedCommentReaction:
    | Reaction
    | null
    | undefined = _comment.reactions.find(
    (it: Reaction) =>
      it.reaction === reaction.reaction && it?.author?.id === currentUser?.id,
  );

  if (existedCommentReaction) {
    _comment.reactions = _comment.reactions.filter(
      (it: Reaction) =>
        it?.id !== existedCommentReaction.id &&
        existedCommentReaction.author.id === currentUser.id,
    );

    const anotherUserHasReaction: boolean = _comment.reactions.some(
      (it: Reaction) => it.reaction === reaction.reaction,
    );

    if (!anotherUserHasReaction) {
      _comment.reactionOrder = _comment.reactionOrder
        .split(COMMENT_REACTIONS_SEPARATOR)
        .filter((name: string) => name !== reaction.reaction)
        .join(COMMENT_REACTIONS_SEPARATOR);
    }
  } else {
    _comment.reactions = _comment.reactions.concat(reaction);

    const containsReaction: boolean = _comment.reactionOrder
      .split(COMMENT_REACTIONS_SEPARATOR)
      .some((reactionName: string) => reactionName === reaction.reaction);

    if (!containsReaction) {
      _comment.reactionOrder = [_comment.reactionOrder, reaction.reaction]
        .filter(Boolean)
        .join('|');
    }
  }

  return _comment;
}