public async Task <OhlcSeries> ReadOhlcSeries(CurrencyPair currencyPair, DateTime startTime, DateTime endTime, int ohlcTimeSpanSeconds)
{
// Request chart data
const string command = "returnChartData";
var parameters = new Dictionary <string, string>
{
// TODO: Map global currency pair to poloniex currency pair instead of expecting these to be equal
{ "currencyPair", currencyPair.ToString() },
{ "start", DateTimeHelper.ToUnixTime(startTime).ToString() },
{ "end", DateTimeHelper.ToUnixTime(endTime).ToString() },
{ "period", ohlcTimeSpanSeconds.ToString() }
};
var chartData = await _dataRetriever.PerformRequest <IList <MarketChartData> >(ServerUrl, command, parameters);
// Convert chart data to OhlcSeries
var ohlcItems = ImmutableList.CreateBuilder <OhlcItem>();
foreach (var chartItem in chartData.Reverse())
{
var startOhlc = DateTimeHelper.ToUnixTime(chartItem.Time);
var ohlcItem = new OhlcItem(startOhlc, startOhlc, chartItem.High, chartItem.Low, chartItem.Open, chartItem.Close);
ohlcItems.Add(ohlcItem);
}
return(new OhlcSeries(ohlcTimeSpanSeconds, ohlcItems.ToImmutable()));
}