public void Vote(string username, string upvotableEntityId, IUpvotablesService entityService, bool isDownvote)
{
IUpvotableEntity upvotable = entityService.ResolveUpvotableEntity(upvotableEntityId);
var user = _usersService.GetByUsername(username);
if (user == null)
{
return;
}
int voteWeight = isDownvote ? -1 : 1;
Upvote entity = new Upvote();
entity.UserId = user.UserId;
entity.Weight = voteWeight;
var votes = _dbContext.Upvotes.Where(uv => uv.VotingBoxId == upvotable.VotingBoxId && uv.UserId == user.UserId).ToList();
if (votes == null)
{
entity.VotingBoxId = upvotable.VotingBoxId;
_dbContext.Upvotes.Add(entity);
_dbContext.SaveChanges();
return;
}
if (votes != null && votes.Count == 1 && votes.First().Weight == voteWeight)
{
return;
}
else
{
_dbContext.RemoveRange(votes);
entity.VotingBoxId = upvotable.VotingBoxId;
_dbContext.Upvotes.Add(entity);
_dbContext.SaveChanges();
}
}
