private UserStats cloneNewUserStats(IEnumerable<UserStats> stats, int userId, Game game)
{
var stat = stats.Where(x => x.UserId == userId).OrderByDescending(x => x.CalcDate).FirstOrDefault();
if (stat == null)
{
stat = new UserStats { UserId = userId };
}
else
{
stat = new UserStats
{
UserId = userId,
Draws = stat.Draws,
Elo = stat.Elo,
Losses = stat.Losses,
WinRate = stat.WinRate,
Wins = stat.Wins,
Games=stat.Games
};
}
stat.CalcDate = game.Date;
stat.GameId = game.Id;
return stat;
}
private void calculateGeneralStatsForPlayer(Game game, UserStats stats)
{
stats.Games++;
if (game.ScoreA == game.ScoreB)
{
stats.Draws++;
}
else
{
if (game.PlayerAId == stats.UserId)
{
if (game.ScoreA > game.ScoreB)
{
stats.Wins++;
}
else
{
stats.Losses++;
}
}
else
{
if (game.ScoreB > game.ScoreA)
{
stats.Wins++;
}
else
{
stats.Losses++;
}
}
}
stats.WinRate = decimal.Round((stats.Wins * 1.0000m + stats.Draws * 0.5000m) / stats.Games * 100, 2);
}
private void calculateGame(Game game, UserStats statsA, UserStats statsB)
{
calculateElo(game, statsA, statsB);
calculateGeneralStats(game, statsA, statsB);
}
private void calculateGeneralStats(Game game, UserStats statsA, UserStats statsB)
{
calculateGeneralStatsForPlayer(game, statsA);
calculateGeneralStatsForPlayer(game, statsB);
}
private void calculateElo(Game game, UserStats statsA, UserStats statsB)
{
var elo = new EloCalculator(statsA.Elo, statsB.Elo);
if (game.ScoreA > game.ScoreB)
{
elo.WinGamePlayerA();
}
else if (game.ScoreA < game.ScoreB)
{
elo.WinGamePlayerB();
}
else
{
elo.DrawGame();
}
statsA.Elo = (decimal)elo.RatingPlayerA;
statsB.Elo = (decimal)elo.RatingPlayerB;
}