public bool DeleteGame(int id)
{
try
{
// get the game
var game = GameHandler.GetGame(id);
if (game == null)
{
throw new ArgumentException("No such game");
}
// delete the game (incl game scores and player ratings)
GameHandler.DeleteGame(game);
// delete ratings from later games
RatingHandler.DeleteRatingsAfter(game.PlayerRatings[0].Id, deleteDefaultRatings: false);
// reset current ratings in PlayerSeasons
var lastPlayerRatings = RatingHandler.GetLatestRatingsPerPlayerSeason();
var updatedPlayerSeasons = lastPlayerRatings
.Where(pr => !pr.PlayerSeason.Season.HasEnded(game.Created)) // current and future seasons
.Select(pr =>
{
var playerSeason = pr.PlayerSeason;
playerSeason.Season = null;
playerSeason.Rating = pr.Rating;
playerSeason.RatingChange = pr.RatingChange;
playerSeason.Wins = pr.Wins;
playerSeason.Losses = pr.Losses;
playerSeason.CurrentStreak = pr.CurrentStreak;
return(playerSeason);
})
.ToList();
PlayerHandler.UpdatePlayerSeasons(updatedPlayerSeasons.Where(ps => ps.GamesPlayed > 0));
PlayerHandler.DeletePlayerSeasons(updatedPlayerSeasons.Where(ps => ps.GamesPlayed == 0));
// get all games after the deleted game
var games = GameHandler.GetGamesAfter(game.Id, SortOrder.Ascending);
// recalculate ratings
games.ForEach(g => Ratings.CalculateNewRatings(g));
// delete players with no games
var players = PlayerHandler.GetAllPlayers()
.Where(p => p.Seasons.Count == 0);
PlayerHandler.DeletePlayers(players);
return(true);
}
catch (Exception /*ex*/)
{
return(false);
}
}