public async Task Start()
{
while (true)
{
State = SchedulerState.StartingChallenge;
// Find the currently running challenge
var current = await _challenges.GetCurrentChallenge();
// If there is no challenge running try to start a new one
if (current == null)
{
Console.WriteLine("There is no current challenge - attempting to start a new one");
// Start the next challenge, if there isn't one wait a while
var next = await _challenges.StartNext();
if (next == null)
{
Console.WriteLine("No challenges available, waiting for a while...");
State = SchedulerState.WaitingNoChallengesInPool;
await Task.Delay(TimeSpan.FromMinutes(1));
continue;
}
Console.WriteLine($"Starting new challenge {next.Name}");
// Notify all subscribed channels about the new challenge
await NotifyStart(next);
current = next;
}
else
{
Console.WriteLine($"{current.Name} challenge is currently running");
}
//There is a challenge running, wait until the end time or until someone externally pokes us awake
var endTime = current.EndTime;
while (endTime != null && endTime > DateTime.UtcNow)
{
var delay = endTime.Value - DateTime.UtcNow;
if (delay > TimeSpan.Zero)
{
State = SchedulerState.WaitingChallengeEnd;
await Task.WhenAny(_poker.WaitAsync(), Task.Delay(delay));
}
}
// If endtime is after now then something else poked the scheduler awake, reset scheduler logic
if (endTime != null && endTime > DateTime.UtcNow)
{
continue;
}
State = SchedulerState.EndingChallenge;
// Finish the current challenge
await _challenges.EndCurrentChallenge();
// Transfer scores to leaderboard
await UpdateLeaderboard(current, _solutions.GetSolutions(current.Id, uint.MaxValue));
// Get the leaderboard for the challenge that just finished and notify everyone
await NotifyEnd(current, _solutions.GetSolutions(current.Id, uint.MaxValue));
// Wait for a cooldown period
State = SchedulerState.WaitingCooldown;
await Task.WhenAny(_poker.WaitAsync(), Task.Delay(TimeSpan.FromHours(23)));
}
}
public async Task AbruptEnd()
{
await _challenges.EndCurrentChallenge();
await _scheduler.Poke();
}