/// <summary>
/// The get taxation by product method.
/// </summary>
/// <returns>
/// The <see cref="ITaxationByProductMethod"/>.
/// </returns>
/// <exception cref="NullReferenceException">
/// Throws a null reference exception if a provider cannot be resolved
/// </exception>
private ITaxationByProductMethod GetTaxationByProductMethod()
{
var taxMethod = GatewayProviderService.GetTaxMethodForProductPricing();
if (taxMethod == null)
{
LogHelper.Debug <TaxationContext>("Product based pricing is set in settings, but a TaxMethod has not been assigned.");
this._taxMethodNotQueried = true;
return(null);
}
var provider = GatewayProviderResolver.GetProviderByKey <TaxationGatewayProviderBase>(taxMethod.ProviderKey);
if (provider == null)
{
var error = new NullReferenceException("Could not reTaxationGatewayProvider for CalculateTaxForProduct could not be resolved");
LogHelper.Error <TaxationContext>("Resolution failure", error);
throw error;
}
var productProvider = provider as ITaxationByProductProvider;
if (productProvider != null)
{
this._taxMethodNotQueried = false;
return(productProvider.GetTaxationByProductMethod(taxMethod.Key));
}
LogHelper.Debug <TaxationContext>("Resolved provider did not Implement ITaxationByProductProvider returning no tax");
return(null);
}
/// <summary>
/// Resolves all active shipping gateway providers for a given <see cref="IShipCountry"/>
/// </summary>
/// <param name="shipCountry">
/// The ship Country.
/// </param>
/// <returns>
/// A collection of all active shipping gateway providers
/// </returns>
public IEnumerable <ShippingGatewayProviderBase> GetGatewayProvidersByShipCountry(IShipCountry shipCountry)
{
var gatewayProviders = GatewayProviderService.GetGatewayProvidersByShipCountry(shipCountry);
return
(gatewayProviders.Select(
provider => GatewayProviderResolver.GetProviderByKey <ShippingGatewayProviderBase>(provider.Key)));
}
/// <summary>
/// Calculates taxes for the <see cref="IInvoice"/>
/// </summary>
/// <param name="invoice">
/// The <see cref="IInvoice"/> to tax
/// </param>
/// <param name="taxAddress">
/// The address to base the taxation calculation
/// </param>
/// <param name="quoteOnly">
/// An optional parameter indicating that the tax calculation should be an estimate.
/// This is useful for some 3rd party tax APIs
/// </param>
/// <returns>
/// The <see cref="ITaxCalculationResult"/>
/// </returns>
public ITaxCalculationResult CalculateTaxesForInvoice(IInvoice invoice, IAddress taxAddress, bool quoteOnly = false)
{
var providersKey =
GatewayProviderService.GetTaxMethodsByCountryCode(taxAddress.CountryCode)
.Select(x => x.ProviderKey).FirstOrDefault();
if (Guid.Empty.Equals(providersKey))
{
return(new TaxCalculationResult(0, 0));
}
var provider = GatewayProviderResolver.GetProviderByKey <TaxationGatewayProviderBase>(providersKey);
var gatewayTaxMethod = provider.GetGatewayTaxMethodByCountryCode(taxAddress.CountryCode);
return(gatewayTaxMethod.CalculateTaxForInvoice(invoice, taxAddress));
}
