private static string ImportExternalReference(int transactionId, ITaxCode taxCode)
{
var suffix = taxCode switch
{
GstTaxCode _ => "-GST",
NonGstTaxCode _ => "-GSTFree",
_ => ""
};
return($"GX-{transactionId}{suffix}");
}
private static string GenerateDescription(Transaction source, ITaxCode taxCode)
{
var gstTerm = taxCode switch
{
GstTaxCode _ => ", GST Taxable",
NonGstTaxCode _ => ", GST Free",
_ => ", GST Unknown"
};
return($"GlobalX order {source.OrderId}" +
$", product '{source.Product.ProductDescription}'" +
gstTerm);
}
}
public static IEnumerable <Disbursement> FromTransaction(int matterId, Transaction source, GstTaxCode gstTaxCode, NonGstTaxCode nonGstTaxCode)
{
if (source is null)
{
throw new ArgumentNullException(nameof(source));
}
if (source.RetailGst == 0)
{
// If no GST, then create a simple disbursement
yield return(CreateDisbursement(source, matterId, source.RetailPrice, nonGstTaxCode));
yield break;
}
var gstCheck = Math.Round(source.RetailPrice / 10, 2);
if (gstCheck == source.RetailGst)
{
// There is GST, but it is 10% of the price. So again a simple disbursement for the whole amount with GST.
yield return(CreateDisbursement(source, matterId, source.RetailPrice, gstTaxCode));
yield break;
}
var gstTaxableComponent = source.RetailGst * 10;
var gstNonTaxableComponent = source.RetailPrice - gstTaxableComponent;
if (gstTaxableComponent > source.RetailPrice)
{
throw new UnknownGSTException(
$"Couldn't determine GST split. The GST seems to be for more than the total price." +
$" Not sure how to proceed. The GST amount is {source.RetailGst}, and the Retail Price is {source.RetailPrice}");
}
yield return(CreateDisbursement(source, matterId, gstNonTaxableComponent, nonGstTaxCode));
yield return(CreateDisbursement(source, matterId, gstTaxableComponent, gstTaxCode));
}