public async Task <ChessChallenge> Challenge(ulong channel, ulong player1, ulong player2, Action <ChessChallenge> onTimeout = null)
{
if (await PlayerIsInGame(channel, player1))
{
throw new ChessException($"{player1.Mention()} is currently in a game.");
}
if (await PlayerIsInGame(channel, player2))
{
throw new ChessException($"{player2.Mention()} is currently in a game.");
}
if (_challenges.Any(x => x.Channel == channel && x.Challenged == player1 && x.Challenger == player2))
{
throw new ChessException($"{player1.Mention()} has already challenged {player2.Mention()}.");
}
var challenge = new ChessChallenge {
ChallengeDate = DateTime.UtcNow, Channel = channel, Challenger = player1, Challenged = player2
};
_challenges.Add(challenge);
RemoveChallenge(challenge, onTimeout);
return(challenge);
}
private async void RemoveChallenge(ChessChallenge challenge, Action <ChessChallenge> onTimeout)
{
await Task.Delay(_confirmationsTimeout);
if (_challenges.Contains(challenge))
{
_challenges.Remove(challenge);
if (onTimeout != null)
{
onTimeout(challenge);
}
}
}