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);
}
}
public bool TryGetHistoricalPrices(string ticker, Exchange?exchange, DateTime?from, DateTime?to, PriceInterval priceInterval, out PriceList prices, out string errorMessage)
{
double fromValue;
if (from.HasValue)
{
fromValue = (from.Value - DATE_1970).TotalSeconds;
}
else
{
fromValue = (FIRST_DATE - DATE_1970).TotalSeconds;
}
double toValue;
if (to.HasValue)
{
toValue = (to.Value - DATE_1970).TotalSeconds;
}
else
{
toValue = (DateTime.Now - DATE_1970).TotalSeconds;
}
string content = YahooApiCaller.GetHistoricalPrices(ticker, fromValue, toValue, priceInterval);
string[] lines = content.Split('\n');
prices = new PriceList();
for (int i = 1; i < lines.Length; i++)
{
HistoricalPrice p = HistoricalPrice.From(lines[i]);
prices.Add(p);
}
errorMessage = "ok";
return(true);
}
public bool TryGetAssetType(string ticker, out AssetClass assetType)
{
//Example 1
//https://query2.finance.yahoo.com/v7/finance/quote?formatted=true&lang=en-US®ion=US&symbols=AAPL
/*
* {
* "quoteResponse": {
* "result": [
* {
* ...
* "symbol": "AAPL",
* "quoteType": "EQUITY",
* "longName": "Apple Inc."
* ...
* }
* ],
* "error": null
* }
* }
*/
//Example 2
//https://query2.finance.yahoo.com/v7/finance/quote?formatted=true&lang=en-US®ion=US&symbols=TQQQ
/*
* {
* "quoteResponse": {
* "result": [
* {
* "symbol": "TQQQ",
* "shortName": "ProShares UltraPro QQQ",
* "quoteType": "ETF",
* "longName": "ProShares UltraPro QQQ"
* }
* ],
* "error": null
* }
* }
*/
bool ok = YahooApiCaller.GetQuoteData(ticker, out HttpStatusCode statusCode, out YahooQuoteResponse yahooResponse, out string jsonResponse, out string message);
if (ok)
{
var result = yahooResponse.quoteResponse.result.Where(r => r.symbol == ticker).SingleOrDefault();
if (result == null)
{
assetType = AssetClass.Unknown;
return(false);
}
if (result.quoteType == "ETF")
{
assetType = AssetClass.ETF;
return(true);
}
else if (result.quoteType == "EQUITY")
{
assetType = AssetClass.Stock;
return(true);
}
else
{
assetType = AssetClass.Unknown;
return(false);
}
}
else
{
assetType = AssetClass.Unknown;
return(false);
}
}
