public async Task DownVote(int linkId, string userId)
{
var link = await _linksRepository.GetById(linkId);
if (await _votesRepository.AlreadyVoted(linkId, userId))
{
var vote = await _votesRepository.GetByLinkId(linkId);
switch (vote.VoteType)
{
// Down - return
case VoteType.Down: return;
// Up - none vote
case VoteType.Up:
{
vote.VoteType = VoteType.NonVote;
link.Ups--;
break;
}
// none vote - down
case VoteType.NonVote:
{
vote.VoteType = VoteType.Down;
link.Downs++;
break;
}
}
// TODO: Save vote and link to database
await _linksRepository.Update(link);
await _votesRepository.Update(vote);
}
else
{
// create new down vote
var user = await _userRepository.GetById(userId);
var newVote = new Vote(link, user, VoteType.Down);
link.Downs++;
await _votesRepository.Add(newVote);
await _linksRepository.Update(link);
}
}
public async Task <Unit> Handle(DeleteLinkCommand request, CancellationToken cancellationToken)
{
var link = await _linksRepository.GetById(request.LinkId);
await _linksRepository.Delete(link);
return(new Unit());
}
public async Task <Unit> Handle(EditLinkCommand request, CancellationToken cancellationToken)
{
var link = await _linksRepository.GetById(request.LinkId);
link.UpdatedAt = DateTime.Now;
link.Description = request.Description;
link.Url = request.Url;
await _linksRepository.Update(link);
return(new Unit());
}
public async Task <int> Handle(CreateCommentCommand request, CancellationToken cancellationToken)
{
if (request.User == null)
{
throw new ArgumentNullException(nameof(request.User));
}
var link = await _linksRepository.GetById(request.LinkId);
var comment = new Comment(request.Content, request.User, link);
await _commentsRepository.Add(comment);
return(comment.Id);
}
public async Task <LinkDto> Handle(GetLinkById request, CancellationToken cancellationToken)
{
var link = await _linksRepository.GetById(request.LinkId);
return(_mapper.Map <LinkDto>(link));
}