/// <summary> Request Stock History from specified date </summary>
public void RequestStockHistory(string symbol,
Action <string, StockTickerList> callback, DateTime startDate)
{
if (string.IsNullOrEmpty(symbol))
{
return;
}
var stockToken = new StockToken();
stockToken.Symbol = symbol;
stockToken.Callback = callback;
stockToken.StartDate = startDate;
var process = "StockQuandlService -> Requesting stock history for " + stockToken.Symbol;
// skip if this a redundant query
if (_cache.HasCacheData(symbol) && !_cache.HasCacheExpired(symbol))
{
Debug.WriteLine(process + " skipped");
SynchronizationContext.Current.Post(data =>
callback(symbol, (StockTickerList)data), _cache.GetFromCache(symbol));
return;
}
var uri = new Uri(GetStockHistoryUrl(symbol, startDate));
Debug.WriteLine(process + "...");
// var wc = new WebDownload();
//wc.OpenReadCompleted += OnRequestStockHistoryCompleted;
//WebService.Download(uri, stockToken, OnRequestStockHistoryCompleted);
var endDate = DateTime.Now.AddDays(-1.0);
var uri2 = new Uri(string.Format(UrlStockData,
symbol,
startDate.Month - 1,
startDate.Day,
startDate.Year,
endDate.Month - 1,
endDate.Day,
endDate.Year));
var wc = new WebClient();
wc.OpenReadCompleted += OnRequestStockHistoryCompleted;
wc.OpenReadAsync(uri, stockToken);
//wc.OpenReadAsync(uri2, stockToken);
}
private void OnRequestStockHistoryCompleted(object sender, OpenReadCompletedEventArgs response)
{
var stockToken = new StockToken();
if (response.UserState != null)
{
stockToken = (StockToken)response.UserState;
}
var process = "StockQuandlService -> Requesting stock history for " + stockToken.Symbol;
if (response.Cancelled || response.Error != null)
{
Debug.WriteLine(process + " failed: \n at " + response.Error);
//ReportServerError(e.Error);
return;
}
Debug.WriteLine(process + " completed");
var csv = DataProvider.GetCsvFile(response.Result);
var culture = CultureInfo.InvariantCulture;
var stockHistory = new StockTickerList();
#region Parse csv data and create stock history
// 0, 1, 2, 3, 4, 5, 6, 7,
// Date, Open, High, Low, Close, Volume, Dividend, Split Ratio, Adj. Open,Adj. High,Adj. Low,Adj. Close,Adj. Volume
// 2015-09-10,247.23,250.7231,245.33,248.381,2700138.0,0.0,1.0,247.23,250.7231,245.33,248.381,2700138.0
// 2015-09-09,252.05,254.25,248.303,248.91,3363641.0,0.0,1.0,252.05,254.25,248.303,248.91,3363641.0
for (var i = 1; i < csv.Count; i++)
{
var line = csv[i];
var stock = new StockTickerData();
stock.Date = DateTime.ParseExact(line[0], StockDateFormat, culture);
stock.Open = double.Parse(line[1]);
stock.High = double.Parse(line[2]);
stock.Low = double.Parse(line[3]);
stock.Close = double.Parse(line[4]);
stock.Volume = double.Parse(line[5]);
//stock.Dividend = double.Parse(line[6]);
//stock.Split = double.Parse(line[7]);
stockHistory.Add(stock);
var day = stock.Date.ToString();
if (!TradingDates.ContainsKey(day))
{
TradingDates.Add(day, stock.Date);
}
}
#endregion
stockHistory.Sort((x, y) => + (Comparer <DateTime> .Default.Compare(x.Date, y.Date)));
// stockHistory.Sort((x, y) => Comparer.Ascending(x.Date, y.Date));
Debug.WriteLine(process + " data parsed: " + stockHistory.Count);
if (stockHistory.Count > 0)
{
var first = stockHistory.First();
var count = stockHistory.Count;
while (first.Date > stockToken.StartDate)
{
var newStock = new StockTickerData {
Date = first.Date.AddDays(-1)
};
if (TradingDates.ContainsKey(newStock.Date.ToString()))
{
stockHistory.Insert(0, newStock);
}
first = newStock;
}
var delta = stockHistory.Count - count;
if (delta > 0)
{
Debug.WriteLine("StockQuandlService -> Aligned stock data by adding " + delta + " items");
}
}
Debug.WriteLine(process + " data aligned: " + stockHistory.Count);
_cache.UpdateCache(stockToken.Symbol, new List <object> {
stockHistory
});
SynchronizationContext.Current.Post(data =>
stockToken.Callback(stockToken.Symbol, (StockTickerList)data), stockHistory);
}
