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Add MEXC private REST endpoints (#839)
* Add MEXC private REST endpoints * Update README.md Add tick for MEXC private REST endpoints
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‎README.md‎

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Original file line numberDiff line numberDiff line change
@@ -60,7 +60,7 @@ The following cryptocurrency exchanges are supported:
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| KuCoin | x | x | T R | |
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| LBank | x | x | R | |
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| Livecoin | x | x | | |
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| MEXC | x | | | |
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| MEXC | x | x | | |
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| NDAX | x | x | T R | |
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| OKCoin | x | x | R B | |
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| OKEx | x | x | T R B O | |

‎src/ExchangeSharp/API/Exchanges/MEXC/ExchangeMEXCAPI.cs‎

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Original file line numberDiff line numberDiff line change
@@ -202,6 +202,219 @@ protected override async Task<IEnumerable<MarketCandle>> OnGetCandlesAsync(
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7
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));
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}
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protected override async Task<Dictionary<string, decimal>> OnGetAmountsAsync()
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{
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var token = await GetBalance();
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return (token["balances"] ?? throw new InvalidOperationException())
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.Select(
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x =>
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new
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{
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Currency = x["asset"].Value<string>(),
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TotalBalance = x["free"].Value<decimal>()
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+ x["locked"].Value<decimal>()
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}
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)
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.ToDictionary(k => k.Currency, v => v.TotalBalance);
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}
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protected override async Task<Dictionary<string, decimal>> OnGetAmountsAvailableToTradeAsync()
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{
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var token = await GetBalance();
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return (token["balances"] ?? throw new InvalidOperationException())
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.Select(
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x =>
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new
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{
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Currency = x["asset"].Value<string>(),
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AvailableBalance = x["free"].Value<decimal>()
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+ x["locked"].Value<decimal>()
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}
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)
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.ToDictionary(k => k.Currency, v => v.AvailableBalance);
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}
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protected override async Task<IEnumerable<ExchangeOrderResult>> OnGetOpenOrderDetailsAsync(
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string marketSymbol = null)
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{
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if (string.IsNullOrEmpty(marketSymbol))
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{
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throw new ArgumentNullException(nameof(marketSymbol), $"Market symbol cannot be null");
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}
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var token = await MakeJsonRequestAsync<JToken>($"/openOrders?symbol={marketSymbol.ToUpperInvariant()}",
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payload: await GetNoncePayloadAsync());
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return token.Select(ParseOrder);
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}
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protected override async Task<ExchangeOrderResult> OnPlaceOrderAsync(ExchangeOrderRequest order)
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{
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if (string.IsNullOrEmpty(order.MarketSymbol))
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{
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throw new ArgumentNullException(nameof(order.MarketSymbol));
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}
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if (order.Price == null && order.OrderType != OrderType.Market)
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{
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throw new ArgumentNullException(nameof(order.Price));
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}
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var payload = await GetNoncePayloadAsync();
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payload["symbol"] = order.MarketSymbol;
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payload["quantity"] = order.Amount;
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payload["side"] = order.IsBuy ? "BUY" : "SELL";
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if (order.OrderType != OrderType.Market)
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{
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decimal orderPrice = await ClampOrderPrice(order.MarketSymbol, order.Price.Value);
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payload["price"] = orderPrice;
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if (order.IsPostOnly != true)
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payload["type"] = "LIMIT";
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}
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switch (order.OrderType)
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{
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case OrderType.Limit when !order.IsPostOnly.GetValueOrDefault():
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payload["type"] = "LIMIT";
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break;
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case OrderType.Limit when order.IsPostOnly.GetValueOrDefault():
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payload["type"] = "LIMIT_MAKER";
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break;
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case OrderType.Market:
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payload["type"] = "MARKET";
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break;
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case OrderType.Stop:
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default:
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throw new ArgumentOutOfRangeException(nameof(order.OrderType));
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}
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if (!string.IsNullOrEmpty(order.ClientOrderId))
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{
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payload["clientOrderId"] = order.ClientOrderId;
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}
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order.ExtraParameters.CopyTo(payload);
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var token = await MakeJsonRequestAsync<JToken>("/order", BaseUrl, payload, "POST");
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// MEXC does not return order status with the place order response, so we need to send one more request to get the order details.
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return await GetOrderDetailsAsync(
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(token["orderId"] ?? throw new InvalidOperationException()).ToStringInvariant(),
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order.MarketSymbol
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);
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}
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protected override async Task<ExchangeOrderResult> OnGetOrderDetailsAsync(string orderId, string marketSymbol = null, bool isClientOrderId = false)
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{
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if (string.IsNullOrEmpty(marketSymbol))
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{
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throw new ArgumentNullException(nameof(marketSymbol), $"Market symbol cannot be null");
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}
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if (string.IsNullOrEmpty(orderId))
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{
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throw new ArgumentNullException(
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nameof(orderId),
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"Order details request requires order ID or client-supplied order ID"
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);
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}
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var param = isClientOrderId ? $"origClientOrderId={orderId}" : $"orderId={orderId}";
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var token = await MakeJsonRequestAsync<JToken>($"/order?symbol={marketSymbol.ToUpperInvariant()}&{param}",
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payload: await GetNoncePayloadAsync());
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return ParseOrder(token);
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}
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protected override async Task OnCancelOrderAsync(string orderId, string marketSymbol = null, bool isClientOrderId = false)
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{
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if (string.IsNullOrEmpty(orderId))
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{
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throw new ArgumentNullException(
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nameof(orderId),
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"Cancel order request requires order ID"
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);
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}
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if (string.IsNullOrEmpty(marketSymbol))
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{
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throw new ArgumentNullException(
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nameof(marketSymbol),
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"Cancel order request requires symbol"
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);
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}
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var payload = await GetNoncePayloadAsync();
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payload["symbol"] = marketSymbol!;
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switch (isClientOrderId)
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{
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case true:
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payload["origClientOrderId"] = orderId;
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break;
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default:
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payload["orderId"] = orderId;
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break;
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}
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await MakeJsonRequestAsync<JToken>("/order", BaseUrl, payload, "DELETE");
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}
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private async Task<JToken> GetBalance()
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{
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var token = await MakeJsonRequestAsync<JToken>("/account", payload: await GetNoncePayloadAsync());
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return token;
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}
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private static ExchangeOrderResult ParseOrder(JToken token)
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{
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// [
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// {
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// "symbol": "LTCBTC",
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// "orderId": "C02__443776347957968896088",
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// "orderListId": -1,
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// "clientOrderId": "",
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// "price": "0.001395",
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// "origQty": "0.004",
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// "executedQty": "0",
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// "cummulativeQuoteQty": "0",
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// "status": "NEW",
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// "timeInForce": null,
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// "type": "LIMIT",
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// "side": "SELL",
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// "stopPrice": null,
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// "icebergQty": null,
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// "time": 1721586762185,
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// "updateTime": null,
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// "isWorking": true,
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// "origQuoteOrderQty": "0.00000558"
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// }
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// ]
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return new ExchangeOrderResult
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{
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OrderId = token["orderId"].ToStringInvariant(),
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ClientOrderId = token["orderListId"].ToStringInvariant(),
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MarketSymbol = token["symbol"].ToStringInvariant(),
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Amount = token["origQty"].ConvertInvariant<decimal>(),
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AmountFilled = token["executedQty"].ConvertInvariant<decimal>(),
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Price = token["price"].ConvertInvariant<decimal>(),
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IsBuy = token["side"].ToStringInvariant() == "BUY",
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OrderDate = token["time"].ConvertInvariant<long>().UnixTimeStampToDateTimeMilliseconds(),
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Result = ParseOrderStatus(token["status"].ToStringInvariant())
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};
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}
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private static ExchangeAPIOrderResult ParseOrderStatus(string status) =>
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status.ToUpperInvariant() switch
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{
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"NEW" => ExchangeAPIOrderResult.Open,
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"PARTIALLY_FILLED" => ExchangeAPIOrderResult.FilledPartially,
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"FILLED" => ExchangeAPIOrderResult.Filled,
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"PARTIALLY_CANCELED" => ExchangeAPIOrderResult.FilledPartiallyAndCancelled,
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"CANCELED" => ExchangeAPIOrderResult.Canceled,
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_ => ExchangeAPIOrderResult.Unknown
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};
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}
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public partial class ExchangeName

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