private static List <OperationSet> AggregateOperations(
decimal initialBalance,
DateRange range,
RecurrenceFamily recurrence,
IEnumerable <UnifiedAccountOperation> orderedOperations)
{
var result = new List <OperationSet>();
var start = recurrence.GetPeriod(range.Min);
var currentBpd = new OperationSet(recurrence, start, initialBalance);
result.Add(currentBpd);
using (var operationEnumerator = orderedOperations.GetEnumerator())
{
while (operationEnumerator.MoveNext())
{
var operation = operationEnumerator.Current;
if (operation == null)
{
continue;
}
var operationPeriod = recurrence.GetPeriod(operation.ExecutionDate);
while (currentBpd.Period < operationPeriod)
{
currentBpd = OperationSet.CreateForNextStep(currentBpd);
result.Add(currentBpd);
}
currentBpd.Add(operation);
}
}
start = currentBpd.Period;
var end = recurrence.GetPeriod(range.Max);
while (start < end)
{
currentBpd = OperationSet.CreateForNextStep(currentBpd);
result.Add(currentBpd);
start = currentBpd.Period;
}
return(result);
}
public static OperationSet CreateForNextStep(OperationSet currentBpd)
{
DateTime nextStepDay;
switch (currentBpd.Recurrence)
{
case RecurrenceFamily.Daily:
nextStepDay = currentBpd.Period.AddDays(1);
break;
case RecurrenceFamily.Monthly:
nextStepDay = currentBpd.Period.AddMonths(1);
break;
default:
throw new ArgumentOutOfRangeException();
}
return(new OperationSet(currentBpd.Recurrence, nextStepDay, currentBpd.Balance)
{
Balance = currentBpd.Balance
});
}