bitmex: normalize account info currencies (#799)

* bitmex: normalize account info currencies

Bitmex has an interesting way of returning BTC balances, it returns them
as XBt and denominated in Satoshis instead. Normalize that still in the
bitmex wrapper by performing the conversion and returning the normal use
BTC currency.

* Change NW contract to NQ

Co-authored-by: Adrian Gallagher <adrian.gallagher@thrasher.io>

exchanges/bitmex/bitmex_wrapper.go

@@ -6,6 +6,7 @@ import (
 	"fmt"
 	"math"
 	"sort"
+	"strconv"
 	"strings"
 	"sync"
 	"time"
@@ -179,6 +180,7 @@ func (b *Bitmex) Setup(exch *config.ExchangeConfig) error {
 	return b.Websocket.SetupNewConnection(stream.ConnectionSetup{
 		ResponseCheckTimeout: exch.WebsocketResponseCheckTimeout,
 		ResponseMaxLimit:     exch.WebsocketResponseMaxLimit,
+		URL:                  bitmexWSURL,
 	})
 }
 
@@ -415,27 +417,36 @@ func (b *Bitmex) UpdateOrderbook(ctx context.Context, p currency.Pair, assetType
 func (b *Bitmex) UpdateAccountInfo(ctx context.Context, assetType asset.Item) (account.Holdings, error) {
 	var info account.Holdings
 
-	bal, err := b.GetAllUserMargin(ctx)
+	userMargins, err := b.GetAllUserMargin(ctx)
 	if err != nil {
 		return info, err
 	}
 
-	// Need to update to add Margin/Liquidity availibilty
+	var accountID string
 	var balances []account.Balance
-	for i := range bal {
+	// Need to update to add Margin/Liquidity availability
+	for i := range userMargins {
+		accountID = strconv.FormatInt(userMargins[i].Account, 10)
+
+		wallet, err := b.GetWalletInfo(ctx, userMargins[i].Currency)
+		if err != nil {
+			continue
+		}
+
 		balances = append(balances, account.Balance{
-			CurrencyName: currency.NewCode(bal[i].Currency),
-			TotalValue:   float64(bal[i].WalletBalance),
+			CurrencyName: currency.NewCode(wallet.Currency),
+			TotalValue:   wallet.Amount,
 		})
 	}
 
+	info.Accounts = append(info.Accounts,
+		account.SubAccount{
+			ID:         accountID,
+			Currencies: balances,
+		})
 	info.Exchange = b.Name
-	info.Accounts = append(info.Accounts, account.SubAccount{
-		Currencies: balances,
-	})
 
-	err = account.Process(&info)
-	if err != nil {
+	if err := account.Process(&info); err != nil {
 		return account.Holdings{}, err
 	}