/// <summary>
/// Recursive helper to get the votes for all children.
/// </summary>
private async Task GetVotes(IVoteRepo voteRepo, Comment comment, User user)
{
comment.Vote = await voteRepo.FindByUserAndComment(user.Username, comment.Id);
foreach (Comment child in comment.Children)
{
await GetVotes(voteRepo, child, user);
}
}
public async Task <Vote> VoteOnComment(VoteOnComment data, User user)
{
Vote?oldVote = await repo.FindByUserAndComment(user.Username, data.CommentId);
if (oldVote != null)
{
await repo.Delete(oldVote);
}
Vote newVote = factory.CreateForComment(user, data.CommentId, data.VoteDirection);
await repo.Add(newVote);
await bus.Dispatch(new VoteOnCommentEvent(data.CommentId, newVote, oldVote));
return(newVote);
}
protected override async Task <VoteView> HandleInput(VoteOnCommentParams input)
{
using (var connection = database.GetConnection()) {
IVoteRepo voteRepo = database.GetRepo <IVoteRepo>(connection);
ICommentRepo commentRepo = database.GetRepo <ICommentRepo>(connection);
IUserRepo userRepo = database.GetRepo <IUserRepo>(connection);
using (var transaction = connection.BeginTransaction()) {
Comment comment = (await commentRepo.FindById(input.CommentId)) !;
Vote? oldVote = await voteRepo.FindByUserAndComment(input.User.Username, input.CommentId);
// Wipe out the old one...
if (oldVote != null)
{
comment.RemoveVote(oldVote.Direction);
await voteRepo.Delete(oldVote);
comment.User.CommentKarma -= (int)oldVote.Direction;
}
// Create the new vote, and update the comment's karma cache.
Vote newVote = new Vote()
{
User = input.User,
ResourceType = VoteResourceType.Comment,
ResourceId = input.CommentId,
Direction = input.Vote
};
comment.AddVote(newVote.Direction);
comment.User.CommentKarma += (int)newVote.Direction;
await voteRepo.Add(newVote);
await commentRepo.Update(comment);
await userRepo.Update(comment.User);
transaction.Commit();
return(voteViewMapper.Map(newVote));
}
}
}