private void CalculateCoverages()
{
var to = budget.Weeks.Last().To;
var remainder = 0;
foreach (var investmentsSet in AllInvestments.GroupBy(i => i.Date).OrderByDescending(g => g.Key))
{
var from = investmentsSet.Key;
var coveredPeriod = new Period(from, to);
var weeksToCover = budgetWeeks[coveredPeriod];
remainder +=
investmentsSet.Sum(i => i.Amount) -
EnvelopeSize * weeksToCover.Count() +
MonthlyExpenses[coveredPeriod].Sum(e => e.Amount) +
Expenses[coveredPeriod].Sum(e => e.Amount);;
if (remainder >= 0)
{
budget.AddFreeMoney(investmentsSet.Key, remainder);
remainder = 0;
}
to = from;
}
var prevWeekRemainder = Remainders.Last(r => r.Date < budget.Weeks.First().From);
if (prevWeekRemainder.Date <= to)
{
var from = prevWeekRemainder.Date;
var coveredPeriod = new Period(from, to);
var weeksToCover = budgetWeeks[coveredPeriod];
remainder +=
budget.GetRemainder(prevWeekRemainder.Date) -
EnvelopeSize * weeksToCover.Count() +
MonthlyExpenses[coveredPeriod].Sum(e => e.Amount) +
Expenses[coveredPeriod].Sum(e => e.Amount);;
budget.AddFreeMoney(prevWeekRemainder.Date, remainder);
}
}
private void CalculateWeekOutcomes()
{
foreach (var week in budget.Weeks)
{
var calculatedRemainder =
PriorWeekRemainder(week) -
EnvelopeSize +
CashMovements[week].Sum(i => i.Amount) +
MonthlyCashMovements[week].Sum(p => p.Amount);
var remainder = Remainders.SingleOrDefault(r => r.Date == week.LastDay);
if (remainder != null)
{
budget.AddFreeMoney(week.LastDay, remainder.Amount - calculatedRemainder);
}
}
}
public int GetRemainder(DateTime date)
{
var remainder = Remainders.SingleOrDefault(r => r.Date == date);
return(remainder != null ? remainder.Amount : calculatedRemainders[date]);
}
