refactored submit deltas

lib/src/Engine/Balance.js

@@ -63,36 +63,38 @@
     Balance.prototype.applyOffer = function(params) {
       var debit;
 
-      debit = {
-        amount: params.amount
-      };
       this.lockedFunds = this.lockedFunds.subtract(params.fundsUnlocked);
-      this.funds = this.funds.subtract(debit.amount);
-      return debit;
+      this.funds = this.funds.subtract(params.amount);
+      return debit = {
+        amount: params.amount.toString()
+      };
     };
 
     Balance.prototype.applyBid = function(params) {
-      var credit;
+      var amount, commission, credit;
 
       if (this.commissionBalance) {
-        credit = {
-          commission: this.commissionCalculate({
-            amount: params.amount,
-            timestamp: params.timestamp,
-            account: this.account,
-            currency: this.currency
-          })
+        commission = this.commissionCalculate({
+          amount: params.amount,
+          timestamp: params.timestamp,
+          account: this.account,
+          currency: this.currency
+        });
+        amount = params.amount.subtract(commission.amount);
+        this.funds = this.funds.add(amount);
+        this.commissionBalance.deposit(commission.amount);
+        return credit = {
+          amount: amount.toString(),
+          commission: {
+            amount: commission.amount.toString(),
+            reference: commission.reference
+          }
         };
-        credit.amount = params.amount.subtract(credit.commission.amount);
-        this.funds = this.funds.add(credit.amount);
-        this.commissionBalance.deposit(credit.commission.amount);
-        return credit;
       } else {
-        credit = {
-          amount: params.amount
+        this.funds = this.funds.add(params.amount);
+        return credit = {
+          amount: params.amount.toString()
         };
-        this.funds = this.funds.add(credit.amount);
-        return credit;
       }
     };