public void SaveItemHistory(string currStore, CartItem currItem, string path)
{
using (var package = new ExcelPackage())
{
List <string> storeId = currStore.Split('-').ToList();
StoreHeader storeData = StoreQuery.GetStoreHeader(Convert.ToInt64(storeId[0]), Convert.ToInt32(storeId[1]));
var priceHist = HistItemQuery.GetItemHistory(currItem, storeData);
var workbook = package.Workbook;
var worksheet = workbook.Worksheets.Add("ItemHistory");
int currRow = 1;
var dateHeadCell = worksheet.Cells[currRow, 1];
dateHeadCell.Value = "Date";
var priceHeadCell = worksheet.Cells[currRow, 2];
priceHeadCell.Value = "Price";
foreach (var record in priceHist)
{
currRow++;
var dateCell = worksheet.Cells[currRow, 1];
dateCell.Value = record.Key.Date.ToString("dd/MM/yyyy");
var priceCell = worksheet.Cells[currRow, 2];
priceCell.Value = record.Value;
}
var chart = worksheet.Drawings.AddChart("chart", eChartType.ColumnStacked);
var series = chart.Series.Add($"B2:B{currRow}", $"A2:A{currRow}");
series.Header = "Price";
package.SaveAs(new System.IO.FileInfo(path));
}
}
public List <UpdatedCart> CalculateTotal(List <string> stores)
{
UpdatedCarts = new List <UpdatedCart>();
foreach (var item in stores)
{
List <string> storeId = item.Split('-').ToList();
StoreHeader storeData = StoreQuery.GetStoreHeader(Convert.ToInt64(storeId[0]), Convert.ToInt32(storeId[1]));
UpdateCart(storeData);
}
return(UpdatedCarts);
}
public List <UpdatedCart> CalculateTotal(List <long> chains, string location, int productsToFetch)
{
UpdatedCarts = new List <UpdatedCart>();
List <StoreHeader> markedStores = new List <StoreHeader>();
List <KeyValuePair <long, int> > idData = new List <KeyValuePair <long, int> >();
int uniqueFetchs;
if (chains.Count >= productsToFetch)
{
uniqueFetchs = productsToFetch;
}
else
{
uniqueFetchs = chains.Count;
}
for (int i = 0; i < uniqueFetchs; i++)
{
idData = ItemQuery.GetCheapestStore(new List <long>()
{
chains[i]
}, userCart.Items, location, markedStores, 1);
if (idData.Count > 0)
{
StoreHeader storeData = StoreQuery.GetStoreHeader(idData.First().Key, idData.First().Value);
UpdateCart(storeData);
markedStores.Add(storeData);
}
}
if (UpdatedCarts.Count > 0 &&
UpdatedCarts.Count < productsToFetch)
{
idData = ItemQuery.GetCheapestStore(chains, userCart.Items, location, markedStores, productsToFetch - UpdatedCarts.Count);
foreach (var id in idData)
{
StoreHeader storeData = StoreQuery.GetStoreHeader(id.Key, id.Value);
UpdateCart(storeData);
}
}
return(UpdatedCarts.OrderBy(c => c.TotalPrice).ToList());
}
public void UpdateCart(StoreHeader storeData)
{
UpdatedCart currCart = new UpdatedCart(storeData.StoreId, storeData.ChainId, storeData.StoreName, storeData.ChainName);
currCart.Items = userCart.Items.Select(i => new CartItem()
{
ItemCode = i.ItemCode,
ItemType = i.ItemType,
ItemName = i.ItemName,
ChainId = i.ChainId,
Amount = i.Amount,
Price = 0
}).ToList();
foreach (CartItem item in currCart.Items)
{
if (item.ItemType != 0 ||
item.ChainId == currCart.ChainID)
{
item.Price = ItemQuery.GetPrice(currCart.ChainID, currCart.StoreID, item.ItemCode, item.ItemType);
}
}
UpdatedCarts.Add(currCart);
}
public List <KeyValuePair <DateTime, decimal> > GetItemHistory(CartItem currItem, StoreHeader currStore)
{
using (var db = new PricingContext())
{
return(db.HistoryItems.Where(i => i.ItemCode == currItem.ItemCode && i.ItemType == currItem.ItemType && i.StoreID == currStore.StoreId && i.ChainID == currStore.ChainId).Select(i => new { Date = i.LastUpdateDate, Price = i.Price }).OrderBy(i => i.Date)
.AsEnumerable().Select(i => new KeyValuePair <DateTime, decimal>(i.Date, i.Price)).ToList());
}
}
