public Reloan(Database database, Loan loan)
{
this.database = database;
this.originalLoan = loan;
LoanFactory factory = new LoanFactory(DatabaseFactory.Default);
reloan = factory.Clone(loan);
reloan.IsReloan = true;
}
public ReloanSaveForm(Account account, Loan loan = null)
{
this.account = account;
this.originalLoan = loan;
this.loan = cloneOriginalLoan(loan);
reloan = new Reloan(DatabaseFactory.Default, originalLoan);
InitializeComponent();
loadLoanSelector();
}
private void copyCommonProperties(Loan inputLoan, Loan outputLoan)
{
outputLoan.Id = inputLoan.Id;
outputLoan.Account = inputLoan.Account;
outputLoan.Principal = inputLoan.Principal;
outputLoan.InterestRate = inputLoan.InterestRate;
outputLoan.ProcessingFeePercentage = inputLoan.ProcessingFeePercentage;
outputLoan.TakenDate = inputLoan.TakenDate;
outputLoan.StartDate = inputLoan.StartDate;
outputLoan.Remarks = inputLoan.Remarks;
}
public Loan Create(Loan.LoanType type)
{
if (type == Loan.LoanType.AmortizedPayment)
{
return AmortizedLoan();
}
else if (type == Loan.LoanType.InterestOnlyPayment)
{
return PerpetualInterestLoan();
}
throw new ArgumentException("Unsupported loan type");
}
public PaymentHistoryForm(Account account, Loan loan = null)
{
this.account = account;
this.loan = loan;
InitializeComponent();
if (loan == null)
{
Text = account.Name + " Payment History For All Loans";
menuStrip.Visible = false;
}
else
{
Text = account.Name + " Payment History For " + loan.ToString();
}
}
public PaymentForm(Account account, Loan loan = null, Payment payment = null)
{
this.account = account;
this.loan = loan;
if (payment == null)
{
payment = defaultPayment();
}
this.payment = payment;
this.payment.Account = account;
this.payment.Loan = loan;
paymentError = new ErrorProvider(this);
loanError = new ErrorProvider(this);
InitializeComponent();
Text = "Payment Form";
}
public LoanSaveForm(Account account, Loan loan = null)
{
if (loan == null)
{
loan = defaultLoan();
}
this.account = account;
this.loan = loan;
this.loan.Account = account;
principalError = new ErrorProvider(this);
termError = new ErrorProvider(this);
interestError = new ErrorProvider(this);
processingFeeError = new ErrorProvider(this);
InitializeComponent();
loadLoan(loan);
}
public Loan Clone(Loan loan)
{
Loan clone;
if (loan.Type == Loan.LoanType.AmortizedPayment)
{
clone = AmortizedLoan();
copyCommonProperties(loan, clone);
clone.Term = loan.Term;
}
else if (loan.Type == Loan.LoanType.InterestOnlyPayment)
{
clone = PerpetualInterestLoan();
copyCommonProperties(loan, clone);
}
else
{
throw new ArgumentException("Unsupported loan type");
}
return clone;
}
private Loan cloneOriginalLoan(Loan originalLoan)
{
LoanFactory factory = new LoanFactory(DatabaseFactory.Default);
return factory.Clone(originalLoan);
}
public static decimal InterestPaymentPart(string amount, Loan loan)
{
return InterestPaymentPart(convertAmount(amount), loan);
}
public static decimal PrincipalPaymentPart(string amount, Loan loan)
{
decimal amountValue;
if (!decimal.TryParse(amount, out amountValue))
{
throw new ArgumentException("Invalid amount.");
}
return PrincipalPaymentPart(amountValue, loan);
}
private void loadLoan(Loan loan)
{
principalInput.Text = (loan.Principal == 0) ? "" : string.Format("{0:#,##0}", loan.Principal);
interestInput.Text = loan.InterestRate.ToString();
processingFee.Text = (loan.ProcessingFeePercentage == 0) ? "" : string.Format("{0:#,##0}", loan.ProcessingFeePercentage);
takenDateInput.Value = loan.TakenDate;
startDateInput.Value = loan.StartDate;
remarks.Text = loan.Remarks;
if (loan.Type == Loan.LoanType.AmortizedPayment)
{
amortizedRadio.Checked = true;
termInput.Text = (loan.Term == 0) ? "" : loan.Term.ToString();
termInput.Enabled = true;
}
else if (loan.Type == Loan.LoanType.InterestOnlyPayment)
{
monthlyInterestRadio.Checked = true;
termInput.Enabled = false;
}
loadLoanComputations(loan);
loadDateComputations(loan);
}
private void loadDateComputations(Loan loan)
{
endDate.Text = loan.StartDate.AddMonths(loan.Term - 1).ToShortDateString();
}
private void toggleLoanType(Loan.LoanType type)
{
LoanFactory factory = new LoanFactory(DatabaseFactory.Default);
if (type == Loan.LoanType.AmortizedPayment)
{
int term;
bool parseResult = int.TryParse(termInput.Text, out term);
term = parseResult ? term : 0;
loan = factory.ConvertToAmortizedLoan(this.loan as PerpetualInterestLoan, term);
}
else if (type == Loan.LoanType.InterestOnlyPayment)
{
loan = factory.ConvertToPerpetualInterestLoan(this.loan as AmortizedLoan);
}
else
{
throw new ArgumentException("Unsupported loan type");
}
}
private void loadLoanComputations(Loan loan)
{
monthlyDue.Text = string.Format("{0:#,##0}", loan.MonthlyDue);
releaseAmount.Text = string.Format("{0:#,##0}", loan.ReleaseAmount);
}
public static decimal MonthlyDue(Loan.LoanType type, string principal, string interest, string term = "0", bool nearestTenth = true)
{
decimal principalValue, interestValue;
int termValue;
if (!decimal.TryParse(principal, out principalValue))
{
throw new ArgumentException("Invalid principal value");
}
if (!decimal.TryParse(interest, out interestValue))
{
throw new ArgumentException("Invalid interest value");
}
if (type == Loan.LoanType.AmortizedPayment)
{
if (!int.TryParse(term, out termValue))
{
throw new ArgumentException("Invalid term value");
}
}
else
{
termValue = 0;
}
return MonthlyDue(type, principalValue, interestValue, termValue, nearestTenth);
}
public static decimal MonthlyDue(Loan.LoanType type, decimal principal, decimal interest, int term = 0, bool nearestTenth = true)
{
if (type == Loan.LoanType.AmortizedPayment)
{
return LoanCalculator.Amortization(principal, term, interest, nearestTenth);
}
else if (type == Loan.LoanType.InterestOnlyPayment)
{
return LoanCalculator.PayableInterest(principal, interest, nearestTenth);
}
throw new ArgumentException("Unsupported loan type");
}
private void loadLoanComputations(Loan loan)
{
monthlyDue.Text = string.Format("{0:#,##0}", loan.MonthlyDue);
releaseAmount.Text = string.Format("{0:#,##0}", loan.ReleaseAmount);
}
public static decimal PrincipalPaymentPart(decimal amount, Loan loan)
{
return amount - InterestPaymentPart(amount, loan);
}
private void loadDateComputations(Loan loan)
{
endDate.Text = loan.StartDate.AddMonths(loan.Term - 1).ToShortDateString();
}
public static decimal InterestPaymentPart(decimal amount, Loan loan)
{
return InterestPaymentPart(amount, loan.Principal, loan.InterestRate, loan.MonthlyDue);
}
private Loan cloneOriginalLoan(Loan originalLoan)
{
LoanFactory factory = new LoanFactory(DatabaseFactory.Default);
return(factory.Clone(originalLoan));
}
