/// <summary>
/// Fetch symbols, market ids and exchanger's information
/// </summary>
/// <param name="args">Add additional attributes for each exchange</param>
/// <returns></returns>
public override async ValueTask <Markets> FetchMarkets(Dictionary <string, object> args = null)
{
var _result = new Markets();
publicClient.ExchangeInfo.ApiCallWait(TradeType.Public);
{
var _params = publicClient.MergeParamsAndArgs(args);
var _json_value = await publicClient.CallApiGet1Async("/api/v1/instrument/active", _params);
#if DEBUG
_result.rawJson = _json_value.Content;
#endif
var _json_result = publicClient.GetResponseMessage(_json_value.Response);
if (_json_result.success == true)
{
var _markets = publicClient.DeserializeObject <List <BMarketItem> >(_json_value.Content);
foreach (var _m in _markets)
{
_m.active = _m.state != "Unlisted";
if (_m.active == false)
{
continue;
}
var _base_id = _m.underlying;
var _quote_id = _m.quoteCurrency;
var _base_name = publicClient.ExchangeInfo.GetCommonCurrencyName(_base_id);
var _quote_name = publicClient.ExchangeInfo.GetCommonCurrencyName(_quote_id);
var _market_id = _base_name + "/" + _quote_name;
var _order_base = _base_name;
var _order_quote = _quote_name;
var _base_quote = _base_id + _quote_id;
if (_m.symbol == _base_quote)
{
_m.swap = true;
_m.type = "swap";
}
else
{
var _symbols = _m.symbol.Split('_');
if (_symbols.Length > 1)
{
_market_id = _symbols[0] + "/" + _symbols[1];
_order_base = _symbols[0];
_order_quote = _symbols[1];
}
else
{
_market_id = _m.symbol.Substring(0, 3) + "/" + _m.symbol.Substring(3);
_order_base = _m.symbol.Substring(0, 3);
_order_quote = _m.symbol.Substring(3);
}
if (_m.symbol.IndexOf("B_") >= 0)
{
_m.prediction = true;
_m.type = "prediction";
}
else
{
_m.future = true;
_m.type = "future";
}
}
_m.marketId = _market_id;
_m.baseId = (_base_name != "BTC") ? _base_id : _m.settlCurrency;
_m.quoteId = (_quote_name != "BTC") ? _quote_id : _m.settlCurrency;
_m.orderBase = _order_base;
_m.orderQuote = _order_quote;
_m.baseName = _base_name;
_m.quoteName = _quote_name;
_m.lot = _m.lotSize;
_m.precision = new MarketPrecision()
{
quantity = Numerical.PrecisionFromString(Numerical.TruncateToString(_m.lotSize, 16)),
price = Numerical.PrecisionFromString(Numerical.TruncateToString(_m.tickSize, 16)),
amount = Numerical.PrecisionFromString(Numerical.TruncateToString(_m.tickSize, 16))
};
var _lot_size = _m.lotSize;
var _max_order_qty = _m.maxOrderQty;
var _tick_size = _m.tickSize;
var _max_price = _m.maxPrice;
_m.limits = new MarketLimits
{
quantity = new MarketMinMax
{
min = _lot_size,
max = _max_order_qty
},
price = new MarketMinMax
{
min = _tick_size,
max = _max_price
},
amount = new MarketMinMax
{
min = _lot_size * _tick_size,
max = _max_order_qty * _max_price
}
};
if (_m.initMargin != 0)
{
_m.maxLeverage = (int)(1 / _m.initMargin);
}
_result.result.Add(_m.marketId, _m);
}
}
_result.SetResult(_json_result);
}
return(_result);
}