public void Calculate(decimal grossPackage, char payFrequencyUserInput)
{
//1. Find the taxation year
var taxYear = DateTime.Now.Year;
// read file into a string and deserialize JSON to a type
var taxFile = GetTaxFile.RetrieveTaxFile(_logger);
try
{
//Locate the tax data from tax file based on the current year and load the tax slabs
if (taxFile == null)
{
_logger.Log("no data in tax file.");
return;
}
var currentTaxRate = taxFile.TaxRates != null && taxFile.TaxRates.Any() ? taxFile.TaxRates.Find(x => x.Year == taxYear) : null;
if (currentTaxRate == null)
{
_logger.Log("no tax data found for the current year in tax file.");
return;
}
//2. find the percentage of Super
var superPercentage = currentTaxRate.SuperRate;
//3. Calculate Super component
var taxableIncome = grossPackage / ((100 + superPercentage) / 100);
var super = taxableIncome * (superPercentage / 100);
//4. Do deductions
//4.1. Tax
decimal incomeTax = new IncomeTax().Calculate(currentTaxRate, taxableIncome);
//4.2. Medicare Levy
decimal medicareLevy = new MedicareLevy().Calculate(currentTaxRate, taxableIncome);
//4.3. Budget Repair Levy
decimal budgetRepairLevy = new BudgetRepairLevy().Calculate(currentTaxRate, taxableIncome);
//5. Find Net Pay
var netIncome = grossPackage - super - incomeTax - medicareLevy - budgetRepairLevy;
//6. Net pay per passed frequency .i.e., Monthly, Weekly or fortnightly
Frequency frequency;
decimal netPay = 0;
frequency = CalculateNetPayAndFrequency(payFrequencyUserInput, netIncome, ref netPay);
//7. Build and return the result
var salary = new Salary()
{
Super = super,
TaxableIncome = taxableIncome,
NetIncome = netIncome,
BudgetRepairLevy = budgetRepairLevy,
MedicareLevy = medicareLevy,
IncomeTax = incomeTax,
Frequency = frequency,
NetPay = netPay,
Gross = grossPackage
};
DisplayOutput(grossPackage, salary);
}
catch (Exception ex)
{
_logger.Log("Error occurred during Calculate.. {0}", ex.Message);
}
}