/// <summary>
///
/// </summary>
/// <param name="thisPeriod"></param>
/// <param name="multiplier"></param>
/// <returns></returns>
public static Period Multiply(this Period thisPeriod, int multiplier)
{
int periodMultiplierAsInt = thisPeriod.GetPeriodMultiplier();
var result = new Period
{
period = thisPeriod.period,
periodMultiplier =
(multiplier * periodMultiplierAsInt).ToString(CultureInfo.InvariantCulture)
};
//Period result = BinarySerializerHelper.Clone(thisPeriod);//TODO there is a problem with the binary serializer!
return(result);
}
/// <summary>
///
/// </summary>
/// <param name="thisPeriod"></param>
/// <param name="dateTime"></param>
/// <returns></returns>
public static DateTime Add(this Period thisPeriod, DateTime dateTime)
{
int periodMultiplierAsInt = thisPeriod.GetPeriodMultiplier();
switch (thisPeriod.period)
{
case PeriodEnum.D:
return(Calendar.AddDays(dateTime, periodMultiplierAsInt));
case PeriodEnum.W:
return(Calendar.AddWeeks(dateTime, periodMultiplierAsInt));
case PeriodEnum.M:
return(Calendar.AddMonths(dateTime, periodMultiplierAsInt));
case PeriodEnum.Y:
return(Calendar.AddYears(dateTime, periodMultiplierAsInt));
default:
throw new ArgumentException($"PeriodEnum '{thisPeriod.period}' is not supported in this function");
}
}
/// <summary>
///
/// </summary>
/// <param name="thisPeriod"></param>
/// <param name="periodToSubtract"></param>
/// <returns></returns>
public static Period Subtract(this Period thisPeriod, Period periodToSubtract)
{
if (periodToSubtract == null)
{
throw new ArgumentNullException(nameof(periodToSubtract));
}
if (thisPeriod.period != periodToSubtract.period)
{
string message =
$"Periods must be of the same period type. This period '{thisPeriod}', period to subtract '{periodToSubtract}'";
throw new ArgumentException(message, nameof(periodToSubtract));
}
double multiplier = thisPeriod.GetPeriodMultiplier() - periodToSubtract.GetPeriodMultiplier();
var difference
= new Period
{
period = thisPeriod.period,
periodMultiplier = multiplier.ToString(CultureInfo.InvariantCulture)
};
return(difference);
}
/// <summary>
///
/// </summary>
/// <param name="thisPeriod"></param>
/// <param name="periodToAdd"></param>
/// <returns></returns>
public static Period Sum(this Period thisPeriod, Period periodToAdd)
{
if (periodToAdd == null)
{
throw new ArgumentNullException(nameof(periodToAdd));
}
if (thisPeriod.period != periodToAdd.period)
{
string message =
$"Intervals must be of the same period type and they are not. Interval1 : {thisPeriod}, interval2 : {periodToAdd}";
throw new System.Exception(message);
}
string newPeriodMultiplier = (thisPeriod.GetPeriodMultiplier() + periodToAdd.GetPeriodMultiplier()).ToString(CultureInfo.InvariantCulture);
var sum
= new Period
{
period = thisPeriod.period,
periodMultiplier = newPeriodMultiplier
};
return(sum);
}
