private ExchangeRate CreateExchangeRate(KeyValuePair <string, ExchangeTicker> ticker)
{
if (notFoundSymbols.Contains(ticker.Key))
{
return(null);
}
try
{
var tickerName = _ExchangeAPI.ExchangeSymbolToGlobalSymbol(ticker.Key);
if (!CurrencyPair.TryParse(tickerName, out var pair))
{
notFoundSymbols.Add(ticker.Key);
return(null);
}
if (ReverseCurrencyPair)
{
pair = new CurrencyPair(pair.Right, pair.Left);
}
var rate = new ExchangeRate();
rate.CurrencyPair = pair;
rate.Exchange = _ExchangeName;
rate.BidAsk = new BidAsk(ticker.Value.Bid, ticker.Value.Ask);
return(rate);
}
catch (ArgumentException)
{
notFoundSymbols.Add(ticker.Key);
return(null);
}
}
public override SyntaxNode VisitInvocationExpression(InvocationExpressionSyntax node)
{
var exchangeName = node.Expression.ToString();
if (exchangeName.StartsWith("ERR_", StringComparison.OrdinalIgnoreCase))
{
Errors.Add(RateRulesErrors.PreprocessError);
return(base.VisitInvocationExpression(node));
}
var currencyPair = node.ArgumentList.ChildNodes().FirstOrDefault()?.ToString();
if (currencyPair == null || !CurrencyPair.TryParse(currencyPair, out var pair))
{
Errors.Add(RateRulesErrors.InvalidCurrencyIdentifier);
return(RateRules.CreateExpression($"ERR_INVALID_CURRENCY_PAIR({node.ToString()})"));
}
else
{
var rate = Rates.GetRate(exchangeName, pair);
if (rate == null)
{
Errors.Add(RateRulesErrors.RateUnavailable);
return(RateRules.CreateExpression($"ERR_RATE_UNAVAILABLE({exchangeName}, {pair.ToString()})"));
}
else
{
return(RateRules.CreateExpression(rate.ToString()));
}
}
}
private async Task <PairRate> CreateExchangeRate(T exchangeAPI, KeyValuePair <string, ExchangeTicker> ticker)
{
if (notFoundSymbols.TryGetValue(ticker.Key, out _))
{
return(null);
}
if (ticker.Key.Contains("XMR"))
{
}
try
{
CurrencyPair pair;
if (ticker.Value.Volume.BaseCurrency is not null && ticker.Value.Volume.QuoteCurrency is not null)
{
pair = new CurrencyPair(ticker.Value.Volume.BaseCurrency, ticker.Value.Volume.QuoteCurrency);
}
else
{
var tickerName = await exchangeAPI.ExchangeMarketSymbolToGlobalMarketSymbolAsync(ticker.Key);
if (!CurrencyPair.TryParse(tickerName, out pair))
{
notFoundSymbols.TryAdd(ticker.Key, ticker.Key);
return(null);
}
}
return(new PairRate(pair, new BidAsk(ticker.Value.Bid, ticker.Value.Ask)));
}
private async Task <PairRate> CreateExchangeRate(T exchangeAPI, KeyValuePair <string, ExchangeTicker> ticker)
{
if (notFoundSymbols.TryGetValue(ticker.Key, out _))
{
return(null);
}
try
{
var tickerName = await exchangeAPI.ExchangeMarketSymbolToGlobalMarketSymbolAsync(ticker.Key);
if (!CurrencyPair.TryParse(tickerName, out var pair))
{
notFoundSymbols.TryAdd(ticker.Key, ticker.Key);
return(null);
}
if (ReverseCurrencyPair)
{
pair = new CurrencyPair(pair.Right, pair.Left);
}
return(new PairRate(pair, new BidAsk(ticker.Value.Bid, ticker.Value.Ask)));
}
catch (ArgumentException)
{
notFoundSymbols.TryAdd(ticker.Key, ticker.Key);
return(null);
}
}
public async Task <IActionResult> GetRates2(string currencyPairs, string storeId, CancellationToken cancellationToken)
{
var store = CurrentStore ?? await _storeRepo.FindStore(storeId);
if (store == null)
{
var err = Json(new BitpayErrorsModel {
Error = "Store not found"
});
err.StatusCode = 404;
return(err);
}
if (currencyPairs == null)
{
currencyPairs = store.GetStoreBlob().GetDefaultCurrencyPairString();
if (string.IsNullOrEmpty(currencyPairs))
{
var result = Json(new BitpayErrorsModel()
{
Error = "You need to setup the default currency pairs in 'Store Settings / Rates' or specify 'currencyPairs' query parameter (eg. BTC_USD,LTC_CAD)."
});
result.StatusCode = 400;
return(result);
}
}
var rules = store.GetStoreBlob().GetRateRules(_networkProvider);
var pairs = new HashSet <CurrencyPair>();
foreach (var currency in currencyPairs.Split(','))
{
if (!CurrencyPair.TryParse(currency, out var pair))
{
var result = Json(new BitpayErrorsModel()
{
Error = $"Currency pair {currency} uncorrectly formatted"
});
result.StatusCode = 400;
return(result);
}
pairs.Add(pair);
}
var fetching = _rateProviderFactory.FetchRates(pairs, rules, cancellationToken);
await Task.WhenAll(fetching.Select(f => f.Value).ToArray());
return(Json(pairs
.Select(r => (Pair: r, Value: fetching[r].GetAwaiter().GetResult().BidAsk?.Bid))
.Where(r => r.Value.HasValue)
.Select(r =>
new Rate
{
CryptoCode = r.Pair.Left,
Code = r.Pair.Right,
CurrencyPair = r.Pair.ToString(),
Name = _currencyNameTable.GetCurrencyData(r.Pair.Right, true).Name,
Value = r.Value.Value
}).Where(n => n.Name != null).ToArray()));
}
public async Task <PairRate[]> GetRatesAsync(CancellationToken cancellationToken)
{
var result = new List <PairRate>();
var symbols = await GetSymbolsAsync(cancellationToken);
var helper = (ExchangeKrakenAPI)await ExchangeAPI.GetExchangeAPIAsync <ExchangeKrakenAPI>();
var normalizedPairsList = symbols.Where(s => !notFoundSymbols.ContainsKey(s)).Select(s => helper.NormalizeMarketSymbol(s)).ToList();
var csvPairsList = string.Join(",", normalizedPairsList);
JToken apiTickers = await MakeJsonRequestAsync <JToken>("/0/public/Ticker", null, new Dictionary <string, object> {
{ "pair", csvPairsList }
}, cancellationToken : cancellationToken);
var tickers = new List <KeyValuePair <string, ExchangeTicker> >();
foreach (string symbol in symbols)
{
var ticker = ConvertToExchangeTicker(symbol, apiTickers[symbol]);
if (ticker != null)
{
try
{
string global = null;
var mapped1 = _TickerMapping.Where(t => symbol.StartsWith(t.Key, StringComparison.OrdinalIgnoreCase))
.Select(t => new { KrakenTicker = t.Key, PayTicker = t.Value }).SingleOrDefault();
if (mapped1 != null)
{
var p2 = symbol.Substring(mapped1.KrakenTicker.Length);
if (_TickerMapping.TryGetValue(p2, out var mapped2))
{
p2 = mapped2;
}
global = $"{mapped1.PayTicker}_{p2}";
}
else
{
global = await helper.ExchangeMarketSymbolToGlobalMarketSymbolAsync(symbol);
}
if (CurrencyPair.TryParse(global, out var pair))
{
result.Add(new PairRate(pair, new BidAsk(ticker.Bid, ticker.Ask)));
}
else
{
notFoundSymbols.TryAdd(symbol, symbol);
}
}
catch (ArgumentException)
{
notFoundSymbols.TryAdd(symbol, symbol);
}
}
}
return(result.ToArray());
}
public async Task <ExchangeRates> GetRatesAsync()
{
string url = Exchange == CoinAverageName ? $"https://apiv2.bitcoinaverage.com/indices/{Market}/ticker/short"
: $"https://apiv2.bitcoinaverage.com/exchanges/{Exchange}";
var request = new HttpRequestMessage(HttpMethod.Get, url);
var auth = Authenticator;
if (auth != null)
{
await auth.AddHeader(request);
}
var resp = await HttpClient.SendAsync(request);
using (resp)
{
if ((int)resp.StatusCode == 401)
{
throw new CoinAverageException("Unauthorized access to the API");
}
if ((int)resp.StatusCode == 429)
{
throw new CoinAverageException("Exceed API limits");
}
if ((int)resp.StatusCode == 403)
{
throw new CoinAverageException("Unauthorized access to the API, premium plan needed");
}
resp.EnsureSuccessStatusCode();
var rates = JObject.Parse(await resp.Content.ReadAsStringAsync());
if (Exchange != CoinAverageName)
{
rates = (JObject)rates["symbols"];
}
var exchangeRates = new ExchangeRates();
foreach (var prop in rates.Properties())
{
ExchangeRate exchangeRate = new ExchangeRate();
exchangeRate.Exchange = Exchange;
if (!TryToBidAsk(prop, out var value))
{
continue;
}
exchangeRate.BidAsk = value;
if (CurrencyPair.TryParse(prop.Name, out var pair))
{
exchangeRate.CurrencyPair = pair;
exchangeRates.Add(exchangeRate);
}
}
return(exchangeRates);
}
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
try
{
return(reader.TokenType == JsonToken.Null ? null :
CurrencyPair.TryParse((string)reader.Value, out var result) ? result :
throw new JsonObjectException("Invalid currency pair", reader));
}
catch (InvalidCastException)
{
throw new JsonObjectException("Invalid currency pair", reader);
}
}
private static Sensitivity ReadSensitivityFx(EntryObject o)
{
if (!Enum.TryParse(o.ProductClass, out Model.Product product))
{
throw new InvalidDataException($"The CRIF file contains a {o.RiskType} entry with an invalid ProductClass property.");
}
if (product != Model.Product.RatesFx)
{
throw new InvalidDataException($"The CRIF file contains a {o.RiskType} entry associated to a product class other than {Model.Product.RatesFx}.");
}
Amount amount = ReadAmount(o);
RegulationsInfo regulationsInfo = ReadRegulationsInfo(o);
TradeInfo tradeInfo = ReadTradeInfo(o);
if (o.RiskType == "Risk_FX")
{
if (!Currency.TryParse(o.Qualifier, out Currency currency))
{
throw new InvalidDataException("The CRIF file contains a Risk_FX entry with an invalid Qualifier property.");
}
if (!String.IsNullOrEmpty(o.Bucket) || !String.IsNullOrEmpty(o.Label1) || !String.IsNullOrEmpty(o.Label2))
{
throw new InvalidDataException("The CRIF file cannot specify Bucket, Label1 and Label2 properties for Risk_FX entries.");
}
return(Sensitivity.FxDelta(currency, amount, regulationsInfo, tradeInfo));
}
if (!CurrencyPair.TryParse(o.Qualifier, out CurrencyPair pair))
{
throw new InvalidDataException("The CRIF file contains a Risk_FXVol entry with an invalid Qualifier property.");
}
if (!Tenor.TryParse(o.Label1, out Tenor tenor))
{
throw new InvalidDataException("The CRIF file contains a Risk_FXVol entry with an invalid Label1 property.");
}
if (!String.IsNullOrEmpty(o.Bucket) || !String.IsNullOrEmpty(o.Label2))
{
throw new InvalidDataException("The CRIF file cannot specify the Label2 property for Risk_EquityVol entries.");
}
return(Sensitivity.FxVega(pair, tenor, amount, regulationsInfo, tradeInfo));
}
public async Task <ExchangeRates> GetRatesAsync()
{
var result = new ExchangeRates();
var symbols = await GetSymbolsAsync();
var normalizedPairsList = symbols.Where(s => !notFoundSymbols.ContainsKey(s)).Select(s => _Helper.NormalizeSymbol(s)).ToList();
var csvPairsList = string.Join(",", normalizedPairsList);
JToken apiTickers = await MakeJsonRequestAsync <JToken>("/0/public/Ticker", null, new Dictionary <string, object> {
{ "pair", csvPairsList }
});
var tickers = new List <KeyValuePair <string, ExchangeTicker> >();
foreach (string symbol in symbols)
{
var ticker = ConvertToExchangeTicker(symbol, apiTickers[symbol]);
if (ticker != null)
{
try
{
string global = null;
if (symbol.StartsWith("DASH", StringComparison.OrdinalIgnoreCase))
{
var p2 = symbol.Substring(4);
p2 = p2 == "XBT" ? "BTC" : p2;
global = $"{p2}_{symbol.Substring(0, 4)}";
}
else
{
global = _Helper.ExchangeSymbolToGlobalSymbol(symbol);
}
if (CurrencyPair.TryParse(global, out var pair))
{
result.Add(new ExchangeRate("kraken", pair.Inverse(), new BidAsk(ticker.Bid, ticker.Ask)));
}
else
{
notFoundSymbols.TryAdd(symbol, symbol);
}
}
catch (ArgumentException)
{
notFoundSymbols.TryAdd(symbol, symbol);
}
}
}
return(result);
}
public override SyntaxNode VisitIdentifierName(IdentifierNameSyntax node)
{
if (
(!IsInvocation || IsArgumentList) &&
CurrencyPair.TryParse(node.Identifier.ValueText, out var currentPair))
{
var replacedPair = new CurrencyPair(left: currentPair.Left == "X" ? pair.Left : currentPair.Left,
right: currentPair.Right == "X" ? pair.Right : currentPair.Right);
if (IsInvocation) // eg. replace bittrex(BTC_X) to bittrex(BTC_USD)
{
ExchangeRates.Add(new ExchangeRate()
{
CurrencyPair = replacedPair, Exchange = _ExchangeName
});
return(SyntaxFactory.IdentifierName(replacedPair.ToString()));
}
else // eg. replace BTC_X to BTC_USD, then replace by the expression for BTC_USD
{
var bestCandidate = parent.FindBestCandidate(replacedPair);
if (nested > MaxNestedCount)
{
Errors.Add(RateRulesErrors.TooMuchNestedCalls);
return(RateRules.CreateExpression($"ERR_TOO_MUCH_NESTED_CALLS({replacedPair})"));
}
var innerFlatten = CreateNewContext(replacedPair);
var replaced = innerFlatten.Visit(bestCandidate);
if (replaced is ExpressionSyntax expression)
{
var hasBinaryOps = new HasBinaryOperations();
hasBinaryOps.Visit(expression);
if (hasBinaryOps.Result)
{
replaced = SyntaxFactory.ParenthesizedExpression(expression);
}
}
if (Errors.Contains(RateRulesErrors.TooMuchNestedCalls))
{
return(RateRules.CreateExpression($"ERR_TOO_MUCH_NESTED_CALLS({replacedPair})"));
}
return(replaced);
}
}
return(base.VisitIdentifierName(node));
}
public async Task <IActionResult> Rates(RatesViewModel model, string command = null, string storeId = null, CancellationToken cancellationToken = default)
{
model.SetExchangeRates(GetSupportedExchanges(), model.PreferredExchange);
model.StoreId = storeId ?? model.StoreId;
CurrencyPair[] currencyPairs = null;
try
{
currencyPairs = model.DefaultCurrencyPairs?
.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries)
.Select(p => CurrencyPair.Parse(p))
.ToArray();
}
catch
{
ModelState.AddModelError(nameof(model.DefaultCurrencyPairs), "Invalid currency pairs (should be for example: BTC_USD,BTC_CAD,BTC_JPY)");
}
if (!ModelState.IsValid)
{
return(View(model));
}
if (model.PreferredExchange != null)
{
model.PreferredExchange = model.PreferredExchange.Trim().ToLowerInvariant();
}
var blob = StoreData.GetStoreBlob();
model.DefaultScript = blob.GetDefaultRateRules(_NetworkProvider).ToString();
model.AvailableExchanges = GetSupportedExchanges();
blob.PreferredExchange = model.PreferredExchange;
blob.Spread = (decimal)model.Spread / 100.0m;
blob.DefaultCurrencyPairs = currencyPairs;
if (!model.ShowScripting)
{
if (!GetSupportedExchanges().Select(c => c.Name).Contains(blob.PreferredExchange, StringComparer.OrdinalIgnoreCase))
{
ModelState.AddModelError(nameof(model.PreferredExchange), $"Unsupported exchange ({model.RateSource})");
return(View(model));
}
}
RateRules rules = null;
if (model.ShowScripting)
{
if (!RateRules.TryParse(model.Script, out rules, out var errors))
{
errors = errors ?? new List <RateRulesErrors>();
var errorString = String.Join(", ", errors.ToArray());
ModelState.AddModelError(nameof(model.Script), $"Parsing error ({errorString})");
return(View(model));
}
else
{
blob.RateScript = rules.ToString();
ModelState.Remove(nameof(model.Script));
model.Script = blob.RateScript;
}
}
rules = blob.GetRateRules(_NetworkProvider);
if (command == "Test")
{
if (string.IsNullOrWhiteSpace(model.ScriptTest))
{
ModelState.AddModelError(nameof(model.ScriptTest), "Fill out currency pair to test for (like BTC_USD,BTC_CAD)");
return(View(model));
}
var splitted = model.ScriptTest.Split(',', StringSplitOptions.RemoveEmptyEntries);
var pairs = new List <CurrencyPair>();
foreach (var pair in splitted)
{
if (!CurrencyPair.TryParse(pair, out var currencyPair))
{
ModelState.AddModelError(nameof(model.ScriptTest), $"Invalid currency pair '{pair}' (it should be formatted like BTC_USD,BTC_CAD)");
return(View(model));
}
pairs.Add(currencyPair);
}
var fetchs = _RateFactory.FetchRates(pairs.ToHashSet(), rules, cancellationToken);
var testResults = new List <RatesViewModel.TestResultViewModel>();
foreach (var fetch in fetchs)
{
var testResult = await(fetch.Value);
testResults.Add(new RatesViewModel.TestResultViewModel()
{
CurrencyPair = fetch.Key.ToString(),
Error = testResult.Errors.Count != 0,
Rule = testResult.Errors.Count == 0 ? testResult.Rule + " = " + testResult.BidAsk.Bid.ToString(CultureInfo.InvariantCulture)
: testResult.EvaluatedRule
});
}
model.TestRateRules = testResults;
return(View(model));
}
else // command == Save
{
if (StoreData.SetStoreBlob(blob))
{
await _Repo.UpdateStore(StoreData);
StatusMessage = "Rate settings updated";
}
return(RedirectToAction(nameof(Rates), new
{
storeId = StoreData.Id
}));
}
}
public async Task <IActionResult> GetRates2(string currencyPairs, string storeId)
{
if (storeId == null || currencyPairs == null)
{
var result = Json(new BitpayErrorsModel()
{
Error = "You need to specify storeId (in your store settings) and currencyPairs (eg. BTC_USD,LTC_CAD)"
});
result.StatusCode = 400;
return(result);
}
var store = this.HttpContext.GetStoreData();
if (store == null || store.Id != storeId)
{
store = await _StoreRepo.FindStore(storeId);
}
if (store == null)
{
var result = Json(new BitpayErrorsModel()
{
Error = "Store not found"
});
result.StatusCode = 404;
return(result);
}
var rules = store.GetStoreBlob().GetRateRules(_NetworkProvider);
HashSet <CurrencyPair> pairs = new HashSet <CurrencyPair>();
foreach (var currency in currencyPairs.Split(','))
{
if (!CurrencyPair.TryParse(currency, out var pair))
{
var result = Json(new BitpayErrorsModel()
{
Error = $"Currency pair {currency} uncorrectly formatted"
});
result.StatusCode = 400;
return(result);
}
pairs.Add(pair);
}
var fetching = _RateProviderFactory.FetchRates(pairs, rules);
await Task.WhenAll(fetching.Select(f => f.Value).ToArray());
return(Json(pairs
.Select(r => (Pair: r, Value: fetching[r].GetAwaiter().GetResult().Value))
.Where(r => r.Value.HasValue)
.Select(r =>
new Rate()
{
CryptoCode = r.Pair.Left,
Code = r.Pair.Right,
CurrencyPair = r.Pair.ToString(),
Name = _CurrencyNameTable.GetCurrencyData(r.Pair.Right, true).Name,
Value = r.Value.Value
}).Where(n => n.Name != null).ToArray()));
}
public async Task <IActionResult> GetRates2(string currencyPairs, string storeId, CancellationToken cancellationToken)
{
storeId = await GetStoreId(storeId);
if (storeId == null)
{
var result = Json(new BitpayErrorsModel()
{
Error = "Debe especificar storeId (en la configuración de su tienda)"
});
result.StatusCode = 400;
return(result);
}
var store = this.HttpContext.GetStoreData();
if (store == null || store.Id != storeId)
{
store = await _StoreRepo.FindStore(storeId);
}
if (store == null)
{
var result = Json(new BitpayErrorsModel()
{
Error = "Tienda no encontrada"
});
result.StatusCode = 404;
return(result);
}
if (currencyPairs == null)
{
currencyPairs = store.GetStoreBlob().GetDefaultCurrencyPairString();
if (string.IsNullOrEmpty(currencyPairs))
{
var result = Json(new BitpayErrorsModel()
{
Error = "Debe configurar los pares de divisas predeterminados en 'Configuraciones / tarifas de la tienda' o especificar el parámetro de consulta 'currencyPairs' (por ejemplo, BTC_USD, LTC_CAD)."
});
result.StatusCode = 400;
return(result);
}
}
var rules = store.GetStoreBlob().GetRateRules(_NetworkProvider);
HashSet <CurrencyPair> pairs = new HashSet <CurrencyPair>();
foreach (var currency in currencyPairs.Split(','))
{
if (!CurrencyPair.TryParse(currency, out var pair))
{
var result = Json(new BitpayErrorsModel()
{
Error = $"Par de divisas {currency} formateado incorrectamente"
});
result.StatusCode = 400;
return(result);
}
pairs.Add(pair);
}
var fetching = _RateProviderFactory.FetchRates(pairs, rules, cancellationToken);
await Task.WhenAll(fetching.Select(f => f.Value).ToArray());
return(Json(pairs
.Select(r => (Pair: r, Value: fetching[r].GetAwaiter().GetResult().BidAsk?.Bid))
.Where(r => r.Value.HasValue)
.Select(r =>
new Rate()
{
CryptoCode = r.Pair.Left,
Code = r.Pair.Right,
CurrencyPair = r.Pair.ToString(),
Name = _CurrencyNameTable.GetCurrencyData(r.Pair.Right, true).Name,
Value = r.Value.Value
}).Where(n => n.Name != null).ToArray()));
}