public decimal returnRentBalance(DataContext _db, int card_id)
{
RentAccrualsData rentAccrualsData = new RentAccrualsData(_db);
var cards = rentAccrualsData.ReturncCardIfnfo(card_id);
return(Math.Round(cards.PaymentAmount - cards.ChargeAmount, 2));
}
public DateTime?SetFinishDate(DataContext _db, int card_id)
{
RentAccrualsData rentAccrualsData = new RentAccrualsData(_db);
var _card = rentAccrualsData.ReturncCardIfnfo(card_id);
if (_card != null)
{
decimal balance = Math.Round(_card.PaymentAmount - _card.ChargeAmount, 2);
decimal amount = (decimal)_card.RentAmount;
int day = 0;
if (amount == 0)
{
return(null);
}
int service_days = rentAccrualsData.serviceDay();
while (true)
{
int coeff = service_days;// DateTime.DaysInMonth(DateTime.Now.AddDays(day).Year, DateTime.Now.AddDays(day).Month);
decimal dayly_amount = amount / coeff;
dayly_amount -= (dayly_amount * (decimal)_card.Card.Discount / 100);
if (balance < dayly_amount)
{
break;
}
balance -= dayly_amount;
day++;
}
FinishDate finishDate = new FinishDate();
_card.Card.RentFinishDate = finishDate.GenerateFinishDate(_card.CahrgeTime).AddDays(day);
rentAccrualsData.saveRentFinisheDate(_card);
return(_card.Card.FinishDate);
}
return(null);
}