public bool TryGetLastPrice(string ticker, Exchange?exchange, AssetClass assetType, out HistoricalPrice lastPrice, out string message)
{
//Last two months???
//https://query1.finance.yahoo.com/v8/finance/chart/AAPL?region=US&lang=en-US&includePrePost=false&interval=2m&range=1d&corsDomain=finance.yahoo.com&.tsrc=finance
//Daily, last day
//https://query1.finance.yahoo.com/v8/finance/chart/AAPL?lang=en-US&includePrePost=false&interval=1d&range=1d
//Daily, last 5 days
//https://query1.finance.yahoo.com/v8/finance/chart/AAPL?lang=en-US&includePrePost=false&interval=1d&range=5d
int days = 1;
YahooChartInterval interval = YahooChartInterval.OneHour;
bool ok = YahooApiCaller.GetDailyPrices(ticker, interval, days, out HttpStatusCode statusCode, out YahooChartResponse yahooResponse, out string jsonResponse, out message);
if (ok && statusCode == HttpStatusCode.OK && yahooResponse != null && yahooResponse.Chart != null && yahooResponse.Chart.Result != null && yahooResponse.Chart.Result.Length > 0)
{
var result = yahooResponse.Chart.Result.Last();
int length = result.TimeStampsAsLong.Length;
decimal?close = null;
int i = length - 1;
while (close == null && i > 0)
{
if (result.Indicators.Quote[0].Close[i].HasValue)
{
close = result.Indicators.Quote[0].Close[i].Value;
}
else
{
i--;
}
}
int index = i;
long seconds = result.TimeStampsAsLong[index];
DateTime dt = DATE_1970.AddSeconds(seconds);
decimal price = result.Indicators.Quote[0].Close[index].Value;
ulong volume = result.Indicators.Quote[0].Volume[index].Value;
lastPrice = new HistoricalPrice()
{
Date = dt,
Close = price,
Volume = volume,
};
return(true);
}
else
{
lastPrice = null;
return(false);
}
}
internal static bool GetDailyPrices(string ticker, YahooChartInterval interval, int days, out HttpStatusCode statusCode, out YahooChartResponse yahooResponse, out string jsonResponse, out string message)
{
//Last two months???
//https://query1.finance.yahoo.com/v8/finance/chart/AAPL?region=US&lang=en-US&includePrePost=false&interval=2m&range=1d&corsDomain=finance.yahoo.com&.tsrc=finance
//Daily, last day
//https://query1.finance.yahoo.com/v8/finance/chart/AAPL?lang=en-US&includePrePost=false&interval=1d&range=1d
//Daily, last 5 days
//https://query1.finance.yahoo.com/v8/finance/chart/AAPL?lang=en-US&includePrePost=false&interval=1d&range=5d
//Wrong parameter
//https://query1.finance.yahoo.com/v8/finance/chart/AAPL?region=US&lang=en-US&includePrePost=false&interval=5h&range=1d
//{"chart":{"result":null,"error":{"code":"Bad Request","description":"Invalid input - interval=5h is not supported. Valid intervals: [1m, 2m, 5m, 15m, 30m, 60m, 90m, 1h, 1d, 5d, 1wk, 1mo, 3mo]"}}}
//Daily, every 1 minutes
//https://query1.finance.yahoo.com/v8/finance/chart/AAPL?region=US&lang=en-US&includePrePost=false&interval=1m&range=1d
//Daily, every 15 minutes
//https://query1.finance.yahoo.com/v8/finance/chart/AAPL?region=US&lang=en-US&includePrePost=false&interval=15m&range=1d
string uri = $"{httpClientChartPrices.BaseAddress}/{ticker}?lang=en-US&includePrePost=false&interval={interval}&range={days}d";
HttpResponseMessage responseMessage = httpClientChartPrices.GetAsync(uri).Result;
string content = responseMessage.Content.ReadAsStringAsync().Result;
statusCode = responseMessage.StatusCode;
if (responseMessage.StatusCode == HttpStatusCode.OK)
{
jsonResponse = content;
yahooResponse = JsonConvert.DeserializeObject <YahooChartResponse>(jsonResponse);
message = "OK";
return(true);
}
else
{
dynamic error = new
{
HttpStatusCode = responseMessage.StatusCode.ToString(),
ReasonPhrase = responseMessage.ReasonPhrase,
ContentResponse = content,
};
jsonResponse = JsonConvert.SerializeObject(error);
yahooResponse = null;
message = responseMessage.ReasonPhrase;
return(false);
}
}
