private FieldVisitInfo MergeOrCreateVisit(LocationInfo location, StageDischargeReadingRecord visitRecord)
{
var existingVisit = FindExistingVisit(visitRecord);
if (existingVisit != null)
{
MergeWithExistingVisit(existingVisit, visitRecord);
return(existingVisit);
}
var visitStart = visitRecord.MeasurementStartDateTime;
var visitEnd = visitRecord.MeasurementEndDateTime;
var fieldVisitDetails = new FieldVisitDetails(new DateTimeInterval(visitStart, visitEnd))
{
Comments = visitRecord.Comments,
Party = visitRecord.Party
};
var fieldVisitInfo = _fieldDataResultsAppender.AddFieldVisit(location, fieldVisitDetails);
CreatedVisits.Add(fieldVisitInfo);
if (IsValidMeasurementId(visitRecord.MeasurementId))
{
AddVisitByMeasurementId(fieldVisitInfo, visitRecord);
}
return(fieldVisitInfo);
}
private FieldVisitInfo FindExistingVisit(StageDischargeReadingRecord visitRecord)
{
if (VisitsByMeasurementId.TryGetValue(visitRecord.MeasurementId.Trim(), out var otherVisit))
{
if (otherVisit.StartDate.Date == visitRecord.MeasurementStartDateTime.Date ||
otherVisit.EndDate.Date == visitRecord.MeasurementEndDateTime.Date)
{
// We can match up visits by measurement ID
_log.Info($"Found associated measurementId={visitRecord.MeasurementId} at Start={otherVisit.StartDate} and End={otherVisit.EndDate}");
return(otherVisit);
}
}
var containingVisits = CreatedVisits
.Where(fv => fv.StartDate <= visitRecord.MeasurementStartDateTime &&
fv.EndDate >= visitRecord.MeasurementEndDateTime)
.ToList();
if (containingVisits.Count == 1)
{
// The record fits completely within exactly one existing visit
var visit = containingVisits.Single();
_log.Info($"Merging existing {visit.LocationInfo.LocationIdentifier} visit.Start={visit.StartDate} visit.End={visit.EndDate} with completely contained record.Start={visitRecord.MeasurementStartDateTime} record.End={visitRecord.MeasurementEndDateTime}");
return(visit);
}
var possibleVisits = CreatedVisits
.Where(fv => fv.StartDate.Date == visitRecord.MeasurementStartDateTime.Date ||
fv.EndDate.Date == visitRecord.MeasurementEndDateTime.Date)
.ToList();
if (possibleVisits.Count == 1)
{
// An exact match with on existing visit on the same day as the record
var visit = possibleVisits.Single();
_log.Info($"Merging existing {visit.LocationInfo.LocationIdentifier} visit.Start={visit.StartDate} visit.End={visit.EndDate} with same day record.Start={visitRecord.MeasurementStartDateTime} record.End={visitRecord.MeasurementEndDateTime}");
return(visit);
}
if (possibleVisits.Count == 0)
{
return(null);
}
var error = $"Confused merge of record.Start={visitRecord.MeasurementStartDateTime} record.End={visitRecord.MeasurementEndDateTime} with {possibleVisits.Count} possible visits: {string.Join(", ", possibleVisits.Select(fv => $"Start={fv.StartDate} End={fv.EndDate}"))}";
_log.Error(error);
throw new Exception(error);
}
