public async Task <Quote> GenerateQuote(QuoteRequest request)
{
var wholesalerStock = await _wholesalerQuery.GetWholesalerStock(request.WholesalerId);
var quote = new Quote
{
WholesalerId = request.WholesalerId,
QuotedItems = GetQuotedItems(request, wholesalerStock),
};
quote.RawPrice = quote.QuotedItems.Sum(item => item.UnitPrice * item.Quantity);
quote.Discount = GetDiscount(quote.RawPrice, quote.QuotedItems.Sum(item => item.Quantity));
quote.Price = quote.RawPrice - quote.Discount;
return(quote);
}
private async Task <ValidationResult> ValidateWholesalerStock(QuoteRequest request)
{
var wholesalerStock = await _wholesalerQuery.GetWholesalerStock(request.WholesalerId);
foreach (var requestItem in request.RequestItems)
{
var requestedItemInStock = wholesalerStock.FirstOrDefault(stockItem => stockItem.ItemId.Equals(requestItem.ItemId));
if (requestedItemInStock is null)
{
return(new ValidationResult("Requested Item is not sold by this wholesaler"));
}
if (requestedItemInStock.Quantity < requestItem.Quantity)
{
return(new ValidationResult($"Requested quantity for item {requestItem.ItemId} is not available at this wholesaler"));
}
}
return(ValidationResult.Success);
}