public override async Task UpdatePrices()
{
var binancePrices = await _client.GetStringAsync("https://www.binance.com/api/v3/ticker/price");
var ticks = JsonConvert.DeserializeObject <List <BinanceTick> >(binancePrices);
var exchangeInfo = _marketDataMemCacheService.GetExchange(_exchangeName);
var market = "";
_marketRates = ticks.Where(o => exchangeInfo.TranslateMarket(o.symbol, out market))
.ToDictionary(o => market, o => decimal.Parse(o.price));
}
public IActionResult ExchangeInfo(string exchange)
{
var exchangeInfo = _marketDataService.GetExchange(exchange);
if (exchangeInfo == null)
{
return(BadRequest("Exchange not found"));
}
return(Ok(exchangeInfo));
}
public override IEnumerable <object> GetValues()
{
var exchangeInfo = _marketDataMemCacheService.GetExchange(_exchangeName);
var result = exchangeInfo.Currencies
.Select(o => {
if (o.Id == "BTC")
{
return(currency: "BTC", (btcValue: 1m, usdValue: _marketRates["USDT_BTC"]));
}
else if (_marketRates.ContainsKey("BTC_" + o.Id)) //weaker coins
{
if (_marketRates.ContainsKey("USDT_" + o.Id))
{
return(currency: o.Id, (
btcValue: _marketRates["BTC_" + o.Id],
usdValue: _marketRates["USDT_" + o.Id]
));
}
else
{
return(currency: o.Id, (
btcValue: _marketRates["BTC_" + o.Id],
usdValue: _marketRates["USDT_BTC"] * _marketRates["BTC_" + o.Id]
));
}
}
else //stronger coins
{
var x = _marketRates.ContainsKey(o.Id + "_BTC");
var y = _marketRates.ContainsKey("USDT_" + o.Id);
return(currency: o.Id, (
btcValue: 1 / _marketRates[o.Id + "_BTC"],
usdValue: o.Id == "USDT" ? 1 : o.Id == "USDC" ? 1 / _marketRates["USDC_USDT"] : _marketRates["USDT_" + o.Id]
));
}
}).Select(o => new { o.currency, o.Item2.btcValue, o.Item2.usdValue });
return(result);
}