private static void ApplyInactivityHeuristics(ActivityStreamStatistic statistic,
TimeSpan shortInactivityLimit,
TimeSpan longInactivityThreshold,
TimeSpan inactivityDuration,
Activity previousActivity,
Activity followingActivity)
{
if (WasShortInactivity(inactivityDuration, shortInactivityLimit))
{
Add(statistic, Activity.Inactive, -inactivityDuration);
statistic.NumberOfInactivityPeriods--;
Add(statistic, previousActivity, inactivityDuration);
}
else if (WasLongInactivity(followingActivity, inactivityDuration, longInactivityThreshold))
{
Add(statistic, Activity.Inactive, -inactivityDuration);
statistic.NumberOfInactivityPeriods--;
Add(statistic, Activity.InactiveLong, inactivityDuration);
statistic.NumberOfLongInactivityPeriods++;
}
}
public ActivityStreamStatistic Evaluate(TimeSpan shortInactivityLimit, TimeSpan longInactivityThreshold)
{
var statistic = new ActivityStreamStatistic();
var inactivityDuration = TimeSpan.Zero;
var previousActivity = Activity.Other;
foreach (var activity in _activities)
{
if (activity == Activity.Inactive)
{
if (inactivityDuration == TimeSpan.Zero)
{
statistic.NumberOfInactivityPeriods++;
}
inactivityDuration += _windowSpan;
}
else
{
ApplyInactivityHeuristics(
statistic,
shortInactivityLimit,
longInactivityThreshold,
inactivityDuration,
previousActivity,
activity);
inactivityDuration = TimeSpan.Zero;
previousActivity = activity;
}
if (IsLeaveOrEnter(activity))
{
Add(statistic, Activity.Away, _windowSpan);
}
else
{
Add(statistic, activity, _windowSpan);
}
}
return(statistic);
}
