public QuoteRequestTotals CalculateTotals(QuoteRequest quote)
{
var retVal = new QuoteRequestTotals();
var cartFromQuote = quote.ToCartModel();
var store = _storeService.GetById(quote.StoreId);
if (store != null)
{
//Calculate shipment total
//firts try to get manual amount
retVal.ShippingTotal = quote.ManualShippingTotal;
if (retVal.ShippingTotal == 0 && quote.ShipmentMethod != null)
{
//calculate total by using shipment gateways
var evalContext = new ShippingEvaluationContext(cartFromQuote);
var rate = store.ShippingMethods.Where(x => x.IsActive && x.Code == quote.ShipmentMethod.ShipmentMethodCode)
.SelectMany(x => x.CalculateRates(evalContext))
.Where(x => quote.ShipmentMethod.OptionName != null ? quote.ShipmentMethod.OptionName == x.OptionName : true)
.FirstOrDefault();
retVal.ShippingTotal = rate != null ? rate.Rate : 0m;
}
//Calculate taxes
var taxProvider = store.TaxProviders.Where(x => x.IsActive).OrderBy(x => x.Priority).FirstOrDefault();
if (taxProvider != null)
{
var taxRequest = quote.ToTaxRequest();
var taxEvalContext = new TaxEvaluationContext(taxRequest);
retVal.TaxTotal = taxProvider.CalculateRates(taxEvalContext).Select(x => x.Rate).DefaultIfEmpty(0).Sum(x => x);
}
}
//Calculate subtotal
var items = quote.Items.Where(x => x.SelectedTierPrice != null);
if (quote.Items != null)
{
retVal.OriginalSubTotalExlTax = items.Sum(x => x.SalePrice * x.SelectedTierPrice.Quantity);
retVal.SubTotalExlTax = items.Sum(x => x.SelectedTierPrice.Price * x.SelectedTierPrice.Quantity);
if (quote.ManualSubTotal > 0)
{
retVal.DiscountTotal = retVal.SubTotalExlTax - quote.ManualSubTotal;
retVal.SubTotalExlTax = quote.ManualSubTotal;
}
else if (quote.ManualRelDiscountAmount > 0)
{
retVal.DiscountTotal = retVal.SubTotalExlTax * quote.ManualRelDiscountAmount * 0.01m;
}
}
return retVal;
}