//Check all DateTime values in the list and find the earliest value.
private DateTime ResolveTargetEventDateTime(Timing Timing, bool TargetLowest, int searchParameterId)
{
DateTime TargetEventDateTime;
if (TargetLowest)
{
TargetEventDateTime = DateTime.MaxValue.ToUniversalTime();
}
else
{
TargetEventDateTime = DateTime.MinValue.ToUniversalTime();
}
foreach (var EventDateTime in Timing.EventElement)
{
if (!string.IsNullOrWhiteSpace(EventDateTime.Value))
{
if (FhirDateTime.IsValidValue(EventDateTime.Value))
{
PartialDateTime?PartialDateTimeType = EventDateTime.ToPartialDateTime();
if (PartialDateTimeType.HasValue)
{
IndexDateTime?DateTimeIndexOffSetValue = ParsePartialDateTime(PartialDateTimeType.Value, searchParameterId);
if (DateTimeIndexOffSetValue is object)
{
if (TargetLowest)
{
if (DateTimeIndexOffSetValue.Low.HasValue)
{
if (TargetEventDateTime > DateTimeIndexOffSetValue.Low.Value)
{
TargetEventDateTime = DateTimeIndexOffSetValue.Low.Value;
}
}
}
else
{
if (DateTimeIndexOffSetValue.High.HasValue)
{
if (TargetEventDateTime < DateTimeIndexOffSetValue.High.Value)
{
TargetEventDateTime = DateTimeIndexOffSetValue.High.Value;
}
}
}
}
}
}
}
}
return(TargetEventDateTime);
}
//Check all DateTime values in the list and find the earliest value.
private static DateTimeOffset ResolveTargetEventDateTime(Timing Timing, bool TargetLowest)
{
DateTimeOffset TargetEventDateTime;
if (TargetLowest)
{
TargetEventDateTime = DateTimeOffset.MaxValue.ToUniversalTime();
}
else
{
TargetEventDateTime = DateTimeOffset.MinValue.ToUniversalTime();
}
foreach (var EventDateTime in Timing.EventElement)
{
if (!string.IsNullOrWhiteSpace(EventDateTime.Value))
{
if (FhirDateTime.IsValidValue(EventDateTime.Value))
{
PartialDateTime?PartialDateTimeType = EventDateTime.ToPartialDateTime();
if (PartialDateTimeType.HasValue)
{
DateTimeIndex DateTimeIndexOffSetValue = ParsePartialDateTime(PartialDateTimeType.Value);
DateTimeOffset DateTimeOffSetValue = PartialDateTimeType.Value.ToUniversalTime().ToLocalTime();
if (TargetLowest)
{
if (TargetEventDateTime > DateTimeIndexOffSetValue.Low.Value)
{
TargetEventDateTime = DateTimeIndexOffSetValue.Low.Value;
}
}
else
{
if (TargetEventDateTime < DateTimeIndexOffSetValue.High.Value)
{
TargetEventDateTime = DateTimeIndexOffSetValue.High.Value;
}
}
}
}
}
}
return(TargetEventDateTime);
}