/// <summary>
/// Adjusts the DateTimeSpan object to account for timezone offset.
/// NLDAS Date/Times are in GMT.
/// Adjustment effects range of the requested data but not the date values of the data. Date values are altered with SetDateToLocal()
/// </summary>
/// <param name="errorMsg"></param>
/// <param name="cInput">ITimeSeriesInput</param>
/// <returns></returns>
public static IDateTimeSpan AdjustForOffset(out string errorMsg, ITimeSeriesInput cInput)
{
errorMsg = "";
IDateTimeSpan dateTime = cInput.DateTimeSpan;
if (cInput.Geometry.Timezone.Offset < 0.0 && cInput.TimeLocalized == true)
{
dateTime.StartDate = new DateTime(dateTime.StartDate.Year, dateTime.StartDate.Month, dateTime.StartDate.Day, 1 + Convert.ToInt16(System.Math.Abs(cInput.Geometry.Timezone.Offset)), 00, 00);
}
else if (cInput.Geometry.Timezone.Offset > 0.0 && cInput.TimeLocalized == true)
{
dateTime.StartDate = dateTime.StartDate.AddDays(-1.0);
dateTime.StartDate = new DateTime(dateTime.StartDate.Year, dateTime.StartDate.Month, dateTime.StartDate.Day, 24 - Convert.ToInt16(cInput.Geometry.Timezone.Offset), 00, 00);
}
else
{
dateTime.StartDate = new DateTime(dateTime.StartDate.Year, dateTime.StartDate.Month, dateTime.StartDate.Day, 01, 00, 00);
}
if (cInput.Geometry.Timezone.Offset < 0.0 && cInput.TimeLocalized == true)
{
dateTime.EndDate = dateTime.EndDate.AddDays(1.0);
dateTime.EndDate = new DateTime(dateTime.EndDate.Year, dateTime.EndDate.Month, dateTime.EndDate.Day, Convert.ToInt16(System.Math.Abs(cInput.Geometry.Timezone.Offset)), 00, 00);
}
else if (cInput.Geometry.Timezone.Offset > 0.0 && cInput.TimeLocalized == true)
{
dateTime.EndDate = new DateTime(dateTime.EndDate.Year, dateTime.EndDate.Month, dateTime.EndDate.Day, 24 - Convert.ToInt16(cInput.Geometry.Timezone.Offset), 00, 00);
}
else
{
dateTime.EndDate = dateTime.EndDate.AddDays(1.0);
dateTime.EndDate = new DateTime(dateTime.EndDate.Year, dateTime.EndDate.Month, dateTime.EndDate.Day, 00, 00, 00);
}
return(dateTime);
}
/// <summary>
/// Validates DateTimeSpan input.
/// </summary>
/// <param name="errors"></param>
/// <param name="dateTime"></param>
/// <returns></returns>
public static bool ValidateDates(out List <string> errors, IDateTimeSpan dateTime)
{
errors = new List <string>();
bool nullDates = false;
if (dateTime == null)
{
errors.Add("ERROR: No DateTimeSpan found.");
return(false);
}
if (dateTime.StartDate == null)
{
errors.Add("ERROR: Start date was not found.");
nullDates = true;
}
if (dateTime.EndDate == null)
{
errors.Add("ERROR: End date was not found.");
nullDates = true;
}
if (nullDates)
{
return(false);
}
else
{
if (dateTime.StartDate.Equals(DateTime.MinValue))
{
errors.Add("ERROR: Required 'StartDate' parameter was not found or is invalid.");
nullDates = true;
}
if (dateTime.EndDate.Equals(DateTime.MinValue))
{
errors.Add("ERROR: Required 'EndDate' parameter was not found or is invalid.");
nullDates = true;
}
if (nullDates)
{
return(false);
}
if (DateTime.Compare(dateTime.StartDate, dateTime.EndDate) >= 0)
{
errors.Add("ERROR: Start date must be before end date.");
return(false);
}
return(true);
}
}
