private static IInstallment BuildNext(IInstallment previous, IScheduleConfiguration configuration)
{
if (previous == null)
{
throw new ArgumentException("Previous installment cannot be null.");
}
if (previous.Number == configuration.NumberOfInstallments)
{
return(null);
}
var installment = new Installment
{
Number = previous.Number + 1,
StartDate = previous.EndDate,
EndDate = configuration.PeriodPolicy.GetNextDate(previous.EndDate),
Olb = previous.Olb - previous.Principal,
};
if (configuration.GracePeriod < installment.Number)
{
configuration.CalculationPolicy.Calculate(installment, configuration);
}
return(installment);
}
public void Calculate(IInstallment installment, IScheduleConfiguration configuration)
{
var annuity = configuration.RoundingPolicy.Round(FindAnnuity(configuration));
installment.Interest = CalculateInterest(installment, configuration, installment.Olb);
installment.Principal = annuity - installment.Interest;
}
public void Calculate(IInstallment installment, IScheduleConfiguration configuration)
{
var annuity = configuration.RoundingPolicy.Round(FindAnnuity(configuration));
installment.Interest = CalculateInterest(installment, configuration, installment.Olb);
installment.Principal = annuity - installment.Interest;
}
protected decimal CalculateInterest(IInstallment installment, IScheduleConfiguration configuration, decimal amount)
{
var daysInPeriod = configuration.PeriodPolicy.GetNumberOfDays(installment.EndDate);
var daysInYear = configuration.YearPolicy.GetNumberOfDays(installment.EndDate);
var interest = amount * configuration.InterestRate / 100 * daysInPeriod / daysInYear;
return configuration.RoundingPolicy.Round(interest);
}
public void Calculate(IInstallment installment, IScheduleConfiguration configuration)
{
var number = configuration.NumberOfInstallments - configuration.GracePeriod;
installment.Principal = configuration.RoundingPolicy.Round(configuration.Amount / number);
installment.Interest = CalculateInterest(installment, configuration, installment.Olb);
}
public int GetNumberOfDays(IInstallment installment, IDateShiftPolicy shiftPolicy)
{
if (installment.Number == 1)
{
return(installment.EndDate == installment.StartDate.AddMonths(1) ? 30 : (installment.EndDate - installment.StartDate).Days);
}
return(30);
}
public void UpdateInstallment(IInstallment installment, int contractId, int?eventId)
{
using (var connection = GetConnection())
using (var transaction = connection.BeginTransaction())
{
UpdateInstallment(installment, contractId, eventId, transaction);
transaction.Commit();
}
}
public void UpdateInstallment(IInstallment pInstallment, int pContractId, int?pEventId, bool pRescheduling)
{
using (var connection = GetConnection())
using (var transaction = connection.BeginTransaction())
{
UpdateInstallment(pInstallment, pContractId, pEventId, transaction, pRescheduling);
transaction.Commit();
}
}
/// <summary>
/// this method allows us to update an installment
/// </summary>
/// <param name="pInstallment">the installment modified</param>
/// <param name="pContractId"></param>
/// <param name="pEventId">Event linked to this installment update</param>
/// <param name="pSqlTransac"></param>
/// <param name="pRescheduling">Is it a rescheduled installment</param>
public void UpdateInstallment(IInstallment pInstallment, int pContractId, int?pEventId, SqlTransaction pSqlTransac, bool pRescheduling)
{
// Update installement in database
const string q = @"UPDATE Installments
SET expected_date = @expectedDate,
interest_repayment = @interestRepayment,
capital_repayment = @capitalRepayment,
contract_id = @contractId,
number = @number,
paid_interest = @paidInterest,
paid_capital = @paidCapital,
fees_unpaid = @feesUnpaid,
paid_date = @paidDate,
paid_fees = @paidFees,
comment = @comment,
pending = @pending,
start_date = @start_date,
olb = @olb,
commission = @commission,
paid_commission = @paidCommission
WHERE contract_id = @contractId
AND number = @number";
using (var c = new OpenCbsCommand(q, pSqlTransac.Connection, pSqlTransac))
{
//primary key = contractId + number
c.AddParam("@contractId", pContractId);
c.AddParam("@number", pInstallment.Number);
c.AddParam("@expectedDate", pInstallment.ExpectedDate);
c.AddParam("@interestRepayment", pInstallment.InterestsRepayment.Value);
c.AddParam("@capitalRepayment", pInstallment.CapitalRepayment.Value);
c.AddParam("@paidInterest", pInstallment.PaidInterests.Value);
c.AddParam("@paidCapital", pInstallment.PaidCapital.Value);
c.AddParam("@paidDate", pInstallment.PaidDate);
c.AddParam("@paidFees", pInstallment.PaidFees.Value);
c.AddParam("@comment", pInstallment.Comment);
c.AddParam("@pending", pInstallment.IsPending);
c.AddParam("@start_date", pInstallment.StartDate);
c.AddParam("@olb", pInstallment.OLB);
c.AddParam("@commission", pInstallment.Commission);
c.AddParam("@paidCommission", pInstallment.PaidCommissions);
if (pInstallment is Installment)
{
Installment installment = (Installment)pInstallment;
c.AddParam("@feesUnpaid", installment.FeesUnpaid);
}
else
{
c.AddParam("@feesUnpaid", 0);
}
c.ExecuteNonQuery();
}
}
public void Calculate(IInstallment installment, IScheduleConfiguration configuration)
{
var number = configuration.NumberOfInstallments - configuration.GracePeriod;
var numberOfPeriods = configuration.PeriodPolicy.GetNumberOfPeriodsInYear(installment.EndDate, configuration.YearPolicy);
var interestRate = (double)configuration.InterestRate / 100 / numberOfPeriods;
var numerator = interestRate * (double)configuration.Amount;
var denominator = 1 - 1 / Math.Pow(1 + interestRate, number);
var total = configuration.RoundingPolicy.Round((decimal)(numerator / denominator));
installment.Interest = CalculateInterest(installment, configuration, installment.Olb);
installment.Principal = total - installment.Interest;
}
protected decimal CalculateInterest(IInstallment installment, IScheduleConfiguration configuration, decimal amount)
{
var daysInPeriod = configuration.PeriodPolicy.GetNumberOfDays(installment.EndDate);//, configuration.DateShiftPolicy);
var daysInYear = configuration.YearPolicy.GetNumberOfDays(installment.EndDate);
var interest = installment.Olb * configuration.InterestRate / 100 * daysInPeriod / daysInYear;
//if schedule is flat
if (configuration.CalculationPolicy.GetType() == typeof(FlatInstallmentCalculationPolicy))
{
var numberOfPeriods =
(decimal)
(configuration.PeriodPolicy.GetNumberOfPeriodsInYear(
configuration.PreferredFirstInstallmentDate, configuration.YearPolicy));
interest = configuration.Amount*configuration.InterestRate/numberOfPeriods/100;
}
return configuration.RoundingPolicy.Round(interest);
}
protected decimal CalculateInterest(IInstallment installment, IScheduleConfiguration configuration, decimal amount)
{
var daysInPeriod = configuration.PeriodPolicy.GetNumberOfDays(installment, configuration.DateShiftPolicy);
var daysInYear = configuration.YearPolicy.GetNumberOfDays(installment.EndDate);
var interest = installment.Olb * configuration.InterestRate / 100 * daysInPeriod / daysInYear;
//if schedule is flat
if (configuration.CalculationPolicy.GetType() == typeof(FlatInstallmentCalculationPolicy))
{
var numberOfPeriods =
(decimal)
(configuration.PeriodPolicy.GetNumberOfPeriodsInYear(
configuration.PreferredFirstInstallmentDate, configuration.YearPolicy));
interest = configuration.Amount * configuration.InterestRate / numberOfPeriods / 100;
}
return(configuration.RoundingPolicy.Round(interest));
}
private static IInstallment BuildNext(IInstallment previous, IScheduleConfiguration configuration)
{
if (previous == null) throw new ArgumentException("Previous installment cannot be null.");
if (previous.Number == configuration.NumberOfInstallments) return null;
var installment = new Installment
{
Number = previous.Number + 1,
StartDate = previous.EndDate,
EndDate = configuration.PeriodPolicy.GetNextDate(previous.EndDate),
Olb = previous.Olb - previous.Principal,
};
if (configuration.GracePeriod < installment.Number)
{
configuration.CalculationPolicy.Calculate(installment, configuration);
}
return installment;
}
public void Calculate(IInstallment installment, IScheduleConfiguration configuration)
{
var number = configuration.NumberOfInstallments - configuration.GracePeriod;
installment.Principal = configuration.RoundingPolicy.Round(configuration.Amount / number);
installment.Interest = CalculateInterest(installment, configuration, installment.Olb);
}
public int GetNumberOfDays(IInstallment installment, IDateShiftPolicy shiftPolicy)
{
return (shiftPolicy.ShiftDate(installment.EndDate) - shiftPolicy.ShiftDate(installment.StartDate)).Days;
}
/// <summary>
/// this method allows us to update an installment
/// </summary>
/// <param name="pInstallment">the installment modified</param>
/// <param name="pContractId"></param>
/// <param name="pEventId">Event linked to this installment update</param>
/// <param name="pSqlTransac"></param>
/// <param name="pRescheduling">Is it a rescheduled installment</param>
public void UpdateInstallment(IInstallment pInstallment,int pContractId, int? pEventId,SqlTransaction pSqlTransac, bool pRescheduling)
{
// Update installement in database
const string q = @"UPDATE Installments
SET expected_date = @expectedDate,
interest_repayment = @interestRepayment,
capital_repayment = @capitalRepayment,
contract_id = @contractId,
number = @number,
paid_interest = @paidInterest,
paid_capital = @paidCapital,
fees_unpaid = @feesUnpaid,
paid_date = @paidDate,
paid_fees = @paidFees,
comment = @comment,
pending = @pending,
start_date = @start_date,
olb = @olb
WHERE contract_id = @contractId
AND number = @number";
using (OpenCbsCommand c = new OpenCbsCommand(q, pSqlTransac.Connection, pSqlTransac))
{
//primary key = contractId + number
c.AddParam("@contractId", pContractId);
c.AddParam("@number", pInstallment.Number);
c.AddParam("@expectedDate", pInstallment.ExpectedDate);
c.AddParam("@interestRepayment", pInstallment.InterestsRepayment.Value);
c.AddParam("@capitalRepayment", pInstallment.CapitalRepayment.Value);
c.AddParam("@paidInterest", pInstallment.PaidInterests.Value);
c.AddParam("@paidCapital", pInstallment.PaidCapital.Value);
c.AddParam("@paidDate", pInstallment.PaidDate);
c.AddParam("@paidFees", pInstallment.PaidFees.Value);
c.AddParam("@comment", pInstallment.Comment);
c.AddParam("@pending", pInstallment.IsPending);
c.AddParam("@start_date", pInstallment.StartDate);
c.AddParam("@olb", pInstallment.OLB);
if (pInstallment is Installment)
{
Installment installment = (Installment) pInstallment;
c.AddParam("@feesUnpaid", installment.FeesUnpaid);
}
else
{
c.AddParam("@feesUnpaid", 0);
}
c.ExecuteNonQuery();
}
}
public void UpdateInstallment(IInstallment pInstallment,int pContractId, int? pEventId, bool pRescheduling)
{
using (SqlConnection connection = GetConnection())
using (SqlTransaction transaction = connection.BeginTransaction())
{
UpdateInstallment(pInstallment, pContractId, pEventId, transaction, pRescheduling);
transaction.Commit();
}
}
private static decimal CalculateInterest(IInstallment installment, IScheduleConfiguration configuration)
{
var daysInPeriod = configuration.PeriodPolicy.GetNumberOfDays(installment, configuration.DateShiftPolicy);
var daysInYear = configuration.YearPolicy.GetNumberOfDays(installment.EndDate);
var interest = installment.Olb*configuration.InterestRate / 100 * daysInPeriod / daysInYear;
//if schedule is flat
if (configuration.CalculationPolicy.GetType() == typeof(FlatInstallmentCalculationPolicy))
{
var numberOfPeriods =
(decimal)
(configuration.PeriodPolicy.GetNumberOfPeriodsInYear(
configuration.PreferredFirstInstallmentDate, configuration.YearPolicy));
var gracePeriod = configuration.ChargeInterestDuringGracePeriod ? 0 : configuration.GracePeriod;
interest = configuration.Amount*configuration.InterestRate/numberOfPeriods/100/
(configuration.NumberOfInstallments - gracePeriod);
}
return configuration.RoundingPolicy.Round(interest);
}
public int GetNumberOfDays(IInstallment installment, IDateShiftPolicy shiftPolicy)
{
return((shiftPolicy.ShiftDate(installment.EndDate) - shiftPolicy.ShiftDate(installment.StartDate)).Days);
}
/// <summary>
/// this method allows us to update an installment
/// </summary>
/// <param name="installment">the installment modified</param>
/// <param name="contractId"></param>
/// <param name="sqlTransac"></param>
/// <param name="eventId">Event linked to this installment update</param>
public void UpdateInstallment(IInstallment installment, int contractId, int?eventId, SqlTransaction sqlTransac)
{
UpdateInstallment(installment, contractId, eventId, sqlTransac, false);
}
public void UpdateInstallment(IInstallment installment, int contractId, int? eventId)
{
using (SqlConnection connection = GetConnection())
using (SqlTransaction transaction = connection.BeginTransaction())
{
UpdateInstallment(installment, contractId, eventId, transaction);
transaction.Commit();
}
}
/// <summary>
/// this method allows us to update an installment
/// </summary>
/// <param name="installment">the installment modified</param>
/// <param name="contractId"></param>
/// <param name="sqlTransac"></param>
/// <param name="eventId">Event linked to this installment update</param>
public void UpdateInstallment(IInstallment installment, int contractId, int? eventId, SqlTransaction sqlTransac)
{
UpdateInstallment(installment, contractId, eventId, sqlTransac, false);
}
public int GetNumberOfDays(IInstallment installment, IDateShiftPolicy shiftPolicy)
{
if (installment.Number == 1)
return installment.EndDate == installment.StartDate.AddMonths(1) ? 30 : (installment.EndDate - installment.StartDate).Days;
return 30;
}