IList<ReceiptItem> MergeReceiptItems(IList<BoughtProduct> boughtProducts)
{
string[] barcodes = boughtProducts.Select(bp => bp.Barcode).Distinct().ToArray();
Dictionary<string, Product> boughtProductSet = m_productRepository
.GetByBarcodes(barcodes)
.ToDictionary(p => p.Barcode, p => p);
Dictionary<string,int> boughtDictionary = boughtProducts.GroupBy(bp => bp.Barcode)
.ToDictionary(g => g.Key, g => g.Sum(bp => bp.Amount));
var buyTwoGetOne = new BuyTwoGetOne(m_promotionRepository, m_productRepository);
Dictionary<string, decimal> boughtProductPromoted = buyTwoGetOne.GetPromoted(boughtDictionary);
return boughtProducts
.GroupBy(bp => bp.Barcode)
.Select(g => new ReceiptItem(boughtProductSet[g.Key], g.Sum(bp => bp.Amount),boughtProductPromoted[g.Key]))
.ToArray();
}
decimal CalculateSinglePromoted(string[] promotionTypes, ReceiptItem receiptItem)
{
if (promotionTypes.Length == 0)
{
return 0M;
}
decimal promoted = receiptItem.Promoted;
foreach (string type in promotionTypes)
{
switch (type)
{
case "BUY_TWO_GET_ONE":
ICalculatePromotion calculate = new BuyTwoGetOne();
promoted += calculate.CalculatePromoted(receiptItem);
break;;
}
}
return promoted;
}
