private static void DisplayPriceData(IPriceData data)
{
if (data != null)
{
Console.WriteLine($"\nPrices for item: {data.ItemName}");
// Print 1 field
Console.WriteLine($"\n{data.ItemName}[DSPLY_NAME]: {data["DSPLY_NAME"]}");
// Print the contents of one item
Console.WriteLine($"{data.ItemName} contents: {data.Fields()}");
}
else
{
Console.WriteLine("\n**********Error displaying price data**********");
}
}
private IPriceData WritePrice(IPriceData item, IPriceData previous, CsvWriter csvDataOut)
{
double high = item.High > (1.5 * item.Close) || item.High < item.Close
? item.Close
: item.High;
double low = item.Low <(1.5 * item.Close) || item.Low> item.Close
? item.Close
: item.Low;
double open = item.Open > high || item.Open < low
? previous?.Close ?? low
: item.Open;
previous = item;
csvDataOut.WriteField(
item.Time.StrToDate(client.TimeZone).ToString("yyyy-MM-dd"));
csvDataOut.WriteField(open);
csvDataOut.WriteField(high);
csvDataOut.WriteField(low);
csvDataOut.WriteField(item.Close);
csvDataOut.WriteField(item.Volume);
csvDataOut.NextRecord();
return(previous);
}
public async Task Save(string fileName, IObservable <IPriceData> data, CancellationToken token)
{
logger.LogInformation("Saving: {0}", fileName);
using (var streamOutCsv = new StreamWriter(fileName, false, Encoding.UTF8))
using (var csvDataOut = new CsvWriter(streamOutCsv))
{
csvDataOut.WriteField("Date");
csvDataOut.WriteField("PX_OPEN");
csvDataOut.WriteField("PX_HIGH");
csvDataOut.WriteField("PX_LOW");
csvDataOut.WriteField("PX_LAST");
csvDataOut.WriteField("PX_VOLUME");
csvDataOut.NextRecord();
IPriceData previous = null;
await data.ForEachAsync(item => { previous = WritePrice(item, previous, csvDataOut); }, token).ConfigureAwait(false);
await csvDataOut.FlushAsync().ConfigureAwait(false);
await streamOutCsv.FlushAsync().ConfigureAwait(false);
logger.LogInformation("Saving: {0} Completed with {1} rows", fileName, csvDataOut.Context.Row);
}
}
public HomeController(ILogger <HomeController> logger, IProductData db, IPriceData dbForPriceData)
{
_logger = logger;
this.db_ProductData = db;
this.db_PriceData = dbForPriceData;
}
