private async void HandleStockDataRequest(StockDataRequestMessage message)
{
if (message.Tickers != null || message.Positions != null) //Request for multiple securities
{
await GetSecurityInfo(message);
}
if (!string.IsNullOrEmpty(message.Ticker)) //ticker property is not null, request for one security
{
var isScreener = message.IsScreenerRequest;
var isPreview = message.IsTradePreviewRequest;
await GetSecurityInfo(message.Ticker, isScreener, isPreview);
}
}
/// <summary>
/// Method takes a request for multiple tickers or multiple positions
/// and sends a listed of updated data
/// </summary>
/// <param name="message"></param>
/// <returns></returns>
public async Task GetSecurityInfo(StockDataRequestMessage message)
{
var tickersToQuery = new List <string>();
var positionsQuery = false;
var tickersQuery = false;
if (message.Tickers != null && message.Tickers.Count > 0)
{
tickersToQuery = message.Tickers;
tickersQuery = true;
}
else if (message.Positions != null && message.Positions.Count > 0)
{
tickersToQuery = message.Positions.Select(s => s.Ticker).Distinct().ToList();
positionsQuery = true;
}
using (var yahooAPI = new YahooAPIService())
{
var resultList = await yahooAPI.GetMultipleSecurities(tickersToQuery);
//Return response. Message's boolean is True if this is a startup call of this method.
if (message.IsStartupRequest && positionsQuery)
{
Messenger.Default.Send <PositionPricingMessage>(new PositionPricingMessage(resultList, true));
}
else if (message.IsStartupRequest && tickersQuery)
{
Messenger.Default.Send <StockDataResponseMessage>(new StockDataResponseMessage(resultList, true));
}
else
{
Messenger.Default.Send <StockDataResponseMessage>(new StockDataResponseMessage(resultList, false));
}
}
}