/// <summary>
/// Calculates the adapted talk duration for specified talk id
/// </summary>
/// <param name="itemId">Talk Id</param>
/// <returns>Adapted time (or null if time is not adapted)</returns>
public TimeSpan?CalculateAdaptedDuration(int itemId)
{
var talk = _scheduleService.GetTalkScheduleItem(itemId);
if (talk == null)
{
return(null);
}
Log.Logger.Debug($"Calculating adapted talk duration for item {talk.Name}");
EnsureMeetingStartTimeIsSet(talk);
if (_meetingStartTimeUtc == null)
{
return(null);
}
var adaptiveMode = _optionsService.GetAdaptiveMode();
Log.Logger.Debug($"Adaptive mode = {adaptiveMode}");
if (adaptiveMode == AdaptiveMode.None || !talk.AllowAdaptive)
{
return(null);
}
var mtgEnd = GetPlannedMeetingEnd();
var totalTimeRemaining = mtgEnd - _dateTimeService.UtcNow();
var remainingProgramTimeRequired = GetRemainingProgramTimeRequired(talk);
var deviation = totalTimeRemaining - remainingProgramTimeRequired;
if (!IsDeviationSignificant(deviation))
{
return(null);
}
if (adaptiveMode != AdaptiveMode.TwoWay && totalTimeRemaining >= remainingProgramTimeRequired)
{
// there is time in hand and we don't want to adaptively increase talk durations.
return(null);
}
var remainingAdaptiveTime = CalculateRemainingAdaptiveTimerValues(talk);
Log.Logger.Debug($"Remaining time = {remainingAdaptiveTime}");
var fractionToApplyToThisTalk =
talk.GetPlannedDurationSeconds() / remainingAdaptiveTime.TotalSeconds;
Log.Logger.Debug($"Fraction to apply = {fractionToApplyToThisTalk:F2}");
var secondsToApply = deviation.TotalSeconds * fractionToApplyToThisTalk;
Log.Logger.Debug($"Seconds to add = {secondsToApply:F1}");
return(talk.ActualDuration.Add(TimeSpan.FromSeconds(secondsToApply)));
}