public LoanApplicationResult ProcessLoan(LoanApplication application)
{
// Check loan qualification rules
List <ILoanQualificationRule> failingRules = _loanApprovalRules.Where
(rule => rule.CheckLoanApprovalRule(application) == false).ToList();
if (failingRules.Count > 0)
{
LoanApplicationResult result = LoanApplicationResult.CreateDeniedResult(application, failingRules);
return(result);
}
// Determine interest rate
double interestRate;
double creditScore = application.CreditScore;
LoanRate rate = _loanRates.FirstOrDefault(r =>
creditScore >= r.LowerCreditScore &&
creditScore <= r.UpperCreditScore);
interestRate = rate.InterestRate;
if (application.ApplicantType.ToLower() == "premiere")
{
interestRate = rate.InterestRate - .01;
}
// Determine monthly payment
double monthlyPayment = CalculateLoanPayment(loanAmount: application.LoanAmount,
termYears: application.Term.Years, interestRate: interestRate);
return(LoanApplicationResult.CreateApprovedResult(application, interestRate, monthlyPayment));
}
public LoanApplicationResult ProcessLoan(LoanApplication application)
{
// Check for loan qualification
var failingRule = _loanApprovalRules.FirstOrDefault(rule => rule.CheckLoanApprovalRule(application) == false);
if (failingRule != null)
{
var result = LoanApplicationResult.CreateDeniedResult(application, failingRule.RuleName);
return(result);
}
// Applicant qualifies for the loan, so figure out the interest rate we can offer and the monthly payment
double interestRate = DetermineInterestRate(application);
double monthlyPayment = CalculateLoanPayment(application.LoanAmount, application.Term.Years, interestRate);
return(LoanApplicationResult.CreateApprovedResult(application, interestRate, monthlyPayment));
}