private Available CalculateAvailable(DateTime entryDate, DailyAmount dailyAmount)
{
if (period == null)
{
return(Available.FromDecimal(0m));
}
var expenditures = totalExpenditure?.Amount ?? 0m;
var elapsedDays = period.ElapsedDays(entryDate);
var available = (elapsedDays * dailyAmount) - expenditures;
return(Available.FromDecimal(available >= 0m ? available : 0m));
}
private DailyAmount CalculateDaily()
{
if (period == null)
{
return(DailyAmount.FromDecimal(0m));
}
var income = totalIncome?.Amount ?? 0m;
var outgo = totalOutgo?.Amount ?? 0m;
var daily = Math.Round(((income - outgo) / period.Days), 2);
return(DailyAmount.FromDecimal(daily));
}
private void ApplySnapshotChanges(DateTime entryDate, DailyAmount daily)
{
var available = CalculateAvailable(entryDate, daily);
Apply(new Events.SnapshotChanged
{
DailyBudgetId = ParentId,
SnapshotId = Id,
Daily = daily,
Available = available,
EntryDate = entryDate
});
}
protected override void When(object @event)
{
switch (@event)
{
case Events.DailyBudgetCreated e:
ParentId = new DailyBudgetId(e.Id);
Id = new SnapshotId(Guid.NewGuid());
Daily = DailyAmount.FromDecimal(0m);
Available = Available.FromDecimal(0m);
break;
case Events.PeriodAddedToDailyBudget e:
period = Period.Create(e.Start, e.End);
SetPeriod(e.EntryDate);
break;
case Events.PeriodStartChanged e:
period = Period.Create(e.Start, period.ToB);
SetPeriod(e.EntryDate);
break;
case Events.PeriodEndChanged e:
period = Period.Create(period.FromA, e.End);
SetPeriod(e.EntryDate);
break;
case Events.IncomeAddedToDailyBudget e:
SetTotalIncome(Amount.FromDecimal(e.TotalIncome), e.EntryDate);
break;
case Events.IncomeRemoved e:
SetTotalIncome(Amount.FromDecimal(e.TotalIncome), e.EntryDate);
break;
case Events.IncomeAmountChanged e:
SetTotalIncome(Amount.FromDecimal(e.TotalIncome), e.EntryDate);
break;
case Events.OutgoAddedToDailyBudget e:
SetTotalOutgo(Amount.FromDecimal(e.TotalOutgo), e.EntryDate);
break;
case Events.OutgoRemoved e:
SetTotalOutgo(Amount.FromDecimal(e.TotalOutgo), e.EntryDate);
break;
case Events.OutgoAmountChanged e:
SetTotalOutgo(Amount.FromDecimal(e.TotalOutgo), e.EntryDate);
break;
case Events.ExpenditureAdded e:
SetTotalExpenditures(Amount.FromDecimal(e.TotalExpenditure), e.EntryDate);
break;
case Events.ExpenditureAmountChanged e:
SetTotalExpenditures(Amount.FromDecimal(e.TotalExpenditure), e.EntryDate);
break;
case Events.SnapshotChanged e:
Daily = DailyAmount.FromDecimal(e.Daily);
Available = Available.FromDecimal(e.Available);
break;
}
}