public void UpdateChainRank(item item) // Chain Rank helps us decide which chain is the best
{
List <price> pricesForItem = new List <price>();
foreach (var pair in _minPricesForAllChains)
{
price price = pair.Value.Find(x => x.item_code == item.item_code);
if (price != null)
{
pricesForItem.Add(price);
}
}
price maxPrice = pricesForItem.Maximum();
foreach (var chain in _dbManager.GetChains())
{
price curPrice = pricesForItem.Find(x => x.store.chain_id == chain.chain_id);
if (curPrice != null)
{
_chainRank[chain.chain_id] += (maxPrice.price1 - pricesForItem.Find(x => x.store.chain_id == chain.chain_id).price1);
}
}
}
private List <price> PricesToDB(FileInfo xmlFile, PriceCompareDBEntitie context)
{
XDocument doc = XDocument.Load(xmlFile.FullName);
List <price> listOfPrices = new List <price>();
long chain_id;
long item_code;
int store_id;
float priceOfItem;
foreach (XElement itemElement in doc.Root.Element("Items").Elements("Item"))
{
long.TryParse(itemElement.Element("ItemCode").Value, out item_code);
long.TryParse(doc.Root.Element("ChainId").Value, out chain_id);
var existingItem = context.items.FirstOrDefault(i => i.item_code == item_code);
if (existingItem != null)
{
price price = new price();
price.item_code = existingItem.item_code;
int.TryParse(doc.Root.Element("StoreId").Value, out store_id);
var existingStore = context.stores.FirstOrDefault(s => s.store_id == store_id && s.chain_id == chain_id);
price.store_key = existingStore.store_key;
float.TryParse(itemElement.Element("ItemPrice").Value, out priceOfItem);
price.price1 = priceOfItem;
var existingPrice = context.prices.FirstOrDefault(p => p.item_code == price.item_code && p.store_key == price.store_key);
if (existingPrice == null)
{
listOfPrices.Add(price);
}
}
}
return(listOfPrices);
}
static public price Minimum(this List <price> listOfPrices)
{
price minPrice = listOfPrices[0];
foreach (var price in listOfPrices)
{
if (price != null)
{
if (price.price1 < minPrice.price1)
{
minPrice = price;
}
}
}
return(minPrice);
}
static public price Maximum(this List <price> listOfPrices)
{
float max = 0;
price maxPrice = null;
foreach (var price in listOfPrices)
{
if (price != null)
{
if (price.price1 > max)
{
max = price.price1;
maxPrice = price;
}
}
}
return(maxPrice);
}
