fCraft.ChatTimer.ChatTimer C# (CSharp) Method

        ChatTimer( TimeSpan duration, [CanBeNull] string message, [NotNull] string startedBy ) {
            if( startedBy == null ) throw new ArgumentNullException( "startedBy" );
            StartedBy = startedBy;
            Message = message;
            StartTime = DateTime.UtcNow;
            EndTime = StartTime.Add( duration );
            Duration = duration;
            int oneSecondRepeats = (int)duration.TotalSeconds + 1;
            if( duration > Hour ) {
                announceIntervalIndex = AnnounceIntervals.Length - 1;
                lastHourAnnounced = (int)duration.TotalHours;
            } else {
                for( int i = 0; i < AnnounceIntervals.Length; i++ ) {
                    if( duration <= AnnounceIntervals[i] ) {
                        announceIntervalIndex = i - 1;
                        break;
                    }
                }
            }
            task = Scheduler.NewTask( TimerCallback, this );
            ID = Interlocked.Increment( ref timerCounter );
            AddTimerToList( this );
            IsRunning = true;
            task.RunRepeating( TimeSpan.Zero,
                               TimeSpan.FromSeconds( 1 ),
                               oneSecondRepeats );
        }