private JiraIssueStatistics ComputeStatistics()
{
var splitInterval = TimeSpan.FromHours(1);
var accumulator = new JiraIssueStatistics();
return(this._issue.Changes
.SplitOverTime(splitInterval)
.Lag(this.IsRelevantChange)
.Aggregate(accumulator, AccumulateJiraStatistics));
}
private static JiraIssueStatistics AccumulateJiraStatistics(JiraIssueStatistics accumulator, ILag <JiraIssueChange> pair)
{
var(prevChange, nextChange) = pair;
var changeCategory = prevChange.RealCategory;
var actualDuration = nextChange.Timestamp - prevChange.Timestamp;
accumulator.AddCategoryDuration(changeCategory, actualDuration);
if (changeCategory == JiraStatusCategory.InProgress)
{
accumulator.AddPersonDuration(prevChange.Author, actualDuration);
}
return(accumulator);
}