Map exchange wrapper function "SubmitExchangeOrder" to exchange implementations (#211)

* Sets up Alphapoint and ANX wrappers to use exchange implementations of submit orders
Creates const types for orderType and orderSides

* Changes wrapper func SubmitExchangeOrder return type to string to account for GUID order ID responses

* Adds binance and bitfinex new order wrapper support. Fixes alphapoint order wrapper.

* Adds bitflyer type for exchange order. Adds bithumb and bitmex wrapper support for SubmitExchangeOrder

* Fixes bitmex typo. Adds bitstamp, bittrex, coinbasePro, coinut SubmitExchangeOrder wrapper support

* Maps exchange wrapper function 'SubmitExchangeOrder' to exchange methods for exmo, gateio, gemini, hitbtc, huobi, huobihadax and itbit

* Maps exchange wrapper function 'SubmitExchangeOrder' to exchange methods for kraken, lakebtc, liqui, okcoin, okex, poloniex, wex, yobit and zb

* Updates interface, fixes wrapper type mismatch and fixes tests from changed parameters

* Adds generic support for SubmitExchangeOrder for localbitcoins_wrapper

* Updates wrappers tests and submit order implementations for anx, binance, bitfinex, bitflyer (cannot test), bitmex, bitstamp

* Fixes bitstamp tests

* Adds tests for submitting orders with bittrex, btcmarkets, coinbasepro and coinut

* Adds tests for exmo, gatio, gemini and hitbtc
Makes adjustments where necessary

* Adds tests and updates order implementations for huobi, huobiHadax, itbit, kraken, lakebtc, liqui, okcoin, okex, poloniex, wex, yobit and zb. Not all have been verified due to exchange issues

* Fixes variable names and symbol usages

* Fixes HitBTC order API implementation

* Removes formatting code. Adds error handling for unsupported order types. Fixes typo

* Fixes missed replace for new ToString function. Removes unused functions

* Changes report of unknown withdrawal type with bitshift approximation.
Improved code cov

* Updates wrapper SubmitExchangeOrder return to use a fancy new SubmitOrderResponse struct type to clarify if an order submission is successful or not

exchanges/exmo/exmo_test.go

@@ -1,15 +1,18 @@
 package exmo
 
 import (
+	"fmt"
 	"testing"
 
+	"github.com/thrasher-/gocryptotrader/currency/pair"
 	"github.com/thrasher-/gocryptotrader/currency/symbol"
 	exchange "github.com/thrasher-/gocryptotrader/exchanges"
 )
 
 const (
-	APIKey    = ""
-	APISecret = ""
+	APIKey         = ""
+	APISecret      = ""
+	canPlaceOrders = false
 )
 
 var (
@@ -245,3 +248,26 @@ func TestFormatWithdrawPermissions(t *testing.T) {
 		t.Errorf("Expected: %s, Recieved: %s", expectedResult, withdrawPermissions)
 	}
 }
+
+// This will really really use the API to place an order
+// If you're going to test this, make sure you're willing to place real orders on the exchange
+func TestSubmitOrder(t *testing.T) {
+	e.SetDefaults()
+	TestSetup(t)
+	e.Verbose = true
+
+	if e.APISecret == "" ||
+		e.APISecret == "Secret" ||
+		!canPlaceOrders {
+		t.Skip(fmt.Sprintf("ApiKey: %s. Can place orders: %v", e.APIKey, canPlaceOrders))
+	}
+	var p = pair.CurrencyPair{
+		Delimiter:      "_",
+		FirstCurrency:  symbol.BTC,
+		SecondCurrency: symbol.USD,
+	}
+	response, err := e.SubmitExchangeOrder(p, exchange.Buy, exchange.Market, 1, 10, "1234234")
+	if err != nil || !response.IsOrderPlaced {
+		t.Errorf("Order failed to be placed: %v", err)
+	}
+}

exchanges/exmo/exmo_wrapper.go

@@ -2,6 +2,7 @@ package exmo
 
 import (
 	"errors"
+	"fmt"
 	"log"
 	"strconv"
 	"sync"
@@ -176,8 +177,32 @@ func (e *EXMO) GetExchangeHistory(p pair.CurrencyPair, assetType string) ([]exch
 }
 
 // SubmitExchangeOrder submits a new order
-func (e *EXMO) SubmitExchangeOrder(p pair.CurrencyPair, side exchange.OrderSide, orderType exchange.OrderType, amount, price float64, clientID string) (int64, error) {
-	return 0, errors.New("not yet implemented")
+func (e *EXMO) SubmitExchangeOrder(p pair.CurrencyPair, side exchange.OrderSide, orderType exchange.OrderType, amount, price float64, clientID string) (exchange.SubmitOrderResponse, error) {
+	var submitOrderResponse exchange.SubmitOrderResponse
+	var oT string
+	if orderType == exchange.Limit {
+		return submitOrderResponse, errors.New("Unsupported order type")
+	} else if orderType == exchange.Market {
+		if side == exchange.Buy {
+			oT = "market_buy"
+		} else {
+			oT = "market_sell"
+		}
+	} else {
+		return submitOrderResponse, errors.New("Unsupported order type")
+	}
+
+	response, err := e.CreateOrder(p.Pair().String(), oT, price, amount)
+
+	if response > 0 {
+		submitOrderResponse.OrderID = fmt.Sprintf("%v", response)
+	}
+
+	if err == nil {
+		submitOrderResponse.IsOrderPlaced = true
+	}
+
+	return submitOrderResponse, err
 }
 
 // ModifyExchangeOrder will allow of changing orderbook placement and limit to