public Status.Loan PayoffLoan(PayoffLoanDto payoffLoan)
{
var loan = _loanRepository.FindLoanById(payoffLoan.LoanId);
if (loan == null)
{
return(Status.Loan.Nonexistent);
}
else if (loan.Status == Status.Loan.Repaid)
{
return(Status.Loan.AlreadyRepaid);
}
loan.Amount -= payoffLoan.Amount;
loan.Status = loan.Amount == 0 ? Status.Loan.Repaid : loan.Amount > 0 ? Status.Loan.PartlyPaid : Status.Loan.OverPaid;
if (loan.Status == Status.Loan.OverPaid)
{
return(Status.Loan.OverPaid);
}
if (_loanRepository.PayoffLoan(loan))
{
_userService.ChangeUserBalance(loan.BorrowerId, payoffLoan.Amount);
_userService.ChangeUserBalance(loan.LenderId, payoffLoan.Amount * -1);
}
return(loan.Status);
}