public IEnumerable <string> GetActiveSeasons()
{
return(SeasonHandler
.GetActiveSeasons(DateTimeOffset.UtcNow)
.OrderBy(s => s.StartDate)
.ThenByDescending(s => s.EndDate)
.Select(s => s.Name));
}
public static void CalculateNewRatings(Game game)
{
// fetch players from database
var winningPlayer = PlayerHandler.GetPlayerById(game.WinningGameScore.PlayerId);
var losingPlayer = PlayerHandler.GetPlayerById(game.LosingGameScore.PlayerId);
// fetch active seasons
var activeSeasons = SeasonHandler.GetActiveSeasons(game.Created);
foreach (var season in activeSeasons)
{
var winningPlayerSeason = GetOrCreatePlayerSeason(winningPlayer, season);
var losingPlayerSeason = GetOrCreatePlayerSeason(losingPlayer, season);
// convert to Elo.Lib.Players and calculate new ratings
var winner = winningPlayerSeason.ToEloLibPlayer();
var loser = losingPlayerSeason.ToEloLibPlayer();
winner.WinsAgainst(loser);
// update current ratings
winningPlayerSeason.RatingChange = winner.Rating - winningPlayerSeason.Rating;
winningPlayerSeason.Rating = winner.Rating;
++winningPlayerSeason.Wins;
winningPlayerSeason.CurrentStreak = Math.Max(winningPlayerSeason.CurrentStreak + 1, 1);
losingPlayerSeason.RatingChange = loser.Rating - losingPlayerSeason.Rating;
losingPlayerSeason.Rating = loser.Rating;
++losingPlayerSeason.Losses;
losingPlayerSeason.CurrentStreak = Math.Min(losingPlayerSeason.CurrentStreak - 1, -1);
// add new ratings
var winningPlayerRating = winningPlayerSeason.CreatePlayerRating(game.Id);
var losingPlayerRating = losingPlayerSeason.CreatePlayerRating(game.Id);
// update database
PlayerHandler.UpdatePlayerSeasons(winningPlayerSeason, losingPlayerSeason);
RatingHandler.AddRatings(winningPlayerRating, losingPlayerRating);
}
}