public ConsensusContext(
IApplicationLifetime applicationLifetime,
HttpClient httpClient,
ILogger <IConsensusContext> logger)
{
_applicationLifetime = applicationLifetime;
_httpClient = httpClient;
_logger = logger;
_applicationLifetime.ApplicationStopping.Register(DisposeResources);
_nodeVote = new NodeVote();
}
private async Task <int> AddVoteAsync(string userId, string nodeId, bool isUpVote)
{
var weight = await GetWeightAsync(userId);
var score = (short)(isUpVote ? weight : -weight);
var vote = new NodeVote()
{
Id = Guid.NewGuid().ToString(),
NodeId = nodeId,
UserId = userId,
Score = score
};
_nodeRepository.AddVote(vote);
return(await UpdateHotAsync(vote, false));
}
private async Task <int> UpdateHotAsync(NodeVote vote, bool isUndo)
{
var node = await _nodeRepository.GetAsync(vote.NodeId);
if (vote.Score > 0)
{
node.UpVotes = node.UpVotes + (isUndo? -1 : 1) * vote.Score;
}
if (vote.Score < 0)
{
node.DownVotes = node.DownVotes + (isUndo ? 1 : -1) * vote.Score;
}
var hot = Hot(node.UpVotes, node.DownVotes, node.CreatedDate);
node.Hot = hot;
await _nodeRepository.SaveChangesAsync();
var diff = node.UpVotes - node.DownVotes;
return(diff > 0 ? diff : 0);
}
public void RemoveVote(NodeVote vote)
{
_dbContext.NodeVotes.Remove(vote);
}
public void AddVote(NodeVote vote)
{
_dbContext.NodeVotes.Add(vote);
}
