using System;

public class Program

{

    public static void Main()

    {

        decimal InsuredAmt=600000;

        int PrevTenure=12;

        var dd="2023-03-17";

        var InsuredDate= Convert.ToDateTime(dd);

        decimal TopUpAmount=200000;

        decimal InsuranceRate=1.5M;

        var result= GetTopUpInsuranceAmount(InsuredAmt,PrevTenure,InsuredDate,TopUpAmount,InsuranceRate);

        Console.WriteLine(result);

    }

    public static decimal GetTopUpInsuranceAmount(decimal InsuredAmt, int PrevTenure, DateTime InsuredDate, decimal TopUpAmount, decimal InsuranceRate)

        {

            var result = new decimal();

            try

            {

                var grossPremium = InsuredAmt * (InsuranceRate/100);

                var stampDuty = (InsuredAmt * 15) / 10000; // Insured Value * 1.5 /1000

​

                var naicomLevy = grossPremium / 100; // Premium * 0.01

​

                var netPremium = grossPremium - stampDuty - naicomLevy;

                //FOR THE HARD CODED 12 BELOW, FIND A WAY TO MAKE IS ADJUST ITSELF FOR WHEN THE MAXIMUM TENURE IS MORE THAN 12

                var outstandingPolicyTenure = Convert.ToInt32( 12 - Math.Ceiling(DateTime.Now.Subtract(InsuredDate).TotalDays/30));

                var refundablePremium = Convert.ToDecimal(outstandingPolicyTenure / 12.0) * netPremium; // THIS PART WAS CALCULATING AS AN INTEGER INSTEAD OF A DECIMAL AND WAS CAUSING ISSUES ON PRODCUTION

                var newGrossPremium = (InsuredAmt + TopUpAmount) * (InsuranceRate / 100);

                var newNetPremium = (newGrossPremium - refundablePremium);

​

                result = newNetPremium;

            }

            catch (Exception ex)

            {

            }

            return result;

        }

}