public static async Task CheckForTimedUnlocksAsync(
PuzzleServerContext context,
Event eventObj,
Team team)
{
DateTime expiry;
lock (TimedUnlockExpiryCache)
{
// throttle this by an expiry interval before we do anything even remotely expensive
if (TimedUnlockExpiryCache.TryGetValue(team.ID, out expiry) && expiry >= DateTime.UtcNow)
{
return;
}
}
DateTime now = DateTime.UtcNow;
// do the unlocks in a loop.
// The loop will catch cascading unlocks, e.g. if someone does not hit the site between 11:59 and 12:31, catch up to the 12:30 unlocks immediately.
while (true)
{
var puzzlesToSolveByTime = await PuzzleStateHelper.GetSparseQuery(context, eventObj, null, team)
.Where(state => state.SolvedTime == null && state.UnlockedTime != null && state.Puzzle.MinutesToAutomaticallySolve != null && state.UnlockedTime.Value + TimeSpan.FromMinutes(state.Puzzle.MinutesToAutomaticallySolve.Value) <= now)
.Select((state) => new { Puzzle = state.Puzzle, UnlockedTime = state.UnlockedTime.Value })
.ToListAsync();
foreach (var state in puzzlesToSolveByTime)
{
// mark solve time as when the puzzle was supposed to complete, so cascading unlocks work properly.
await PuzzleStateHelper.SetSolveStateAsync(context, eventObj, state.Puzzle, team, state.UnlockedTime + TimeSpan.FromMinutes(state.Puzzle.MinutesToAutomaticallySolve.Value));
}
// get out of the loop if we did nothing
if (puzzlesToSolveByTime.Count == 0)
{
break;
}
}
lock (TimedUnlockExpiryCache)
{
// effectively, expiry = Math.Max(DateTime.UtcNow, LastGlobalExpiry) + ClosestExpirySpacing - if you could use Math.Max on DateTime
expiry = DateTime.UtcNow;
if (expiry < LastGlobalExpiry)
{
expiry = LastGlobalExpiry;
}
expiry += ClosestExpirySpacing;
TimedUnlockExpiryCache[team.ID] = expiry;
LastGlobalExpiry = expiry;
}
}
public static async Task CheckForTimedUnlocksAsync(
PuzzleServerContext context,
Event eventObj,
Team team)
{
DateTime expiry;
lock (TimedUnlockExpiryCache)
{
// throttle this by an expiry interval before we do anything even remotely expensive
if (TimedUnlockExpiryCache.TryGetValue(team.ID, out expiry) && expiry >= DateTime.UtcNow)
{
return;
}
}
DateTime now = DateTime.UtcNow;
var puzzlesToSolveByTime = await PuzzleStateHelper.GetSparseQuery(context, eventObj, null, team)
.Where(state => state.SolvedTime == null && state.UnlockedTime != null && state.Puzzle.MinutesToAutomaticallySolve != null && state.UnlockedTime.Value + TimeSpan.FromMinutes(state.Puzzle.MinutesToAutomaticallySolve.Value) <= now)
.Select(state => state.Puzzle)
.ToListAsync();
foreach (Puzzle puzzle in puzzlesToSolveByTime)
{
await PuzzleStateHelper.SetSolveStateAsync(context, eventObj, puzzle, team, DateTime.UtcNow);
}
lock (TimedUnlockExpiryCache)
{
// effectively, expiry = Math.Max(DateTime.UtcNow, LastGlobalExpiry) + ClosestExpirySpacing - if you could use Math.Max on DateTime
expiry = DateTime.UtcNow;
if (expiry < LastGlobalExpiry)
{
expiry = LastGlobalExpiry;
}
expiry += ClosestExpirySpacing;
TimedUnlockExpiryCache[team.ID] = expiry;
LastGlobalExpiry = expiry;
}
}
