Run once at start balance

src/botPage/bot/TradeEngine/Balance.js

@@ -1,7 +1,6 @@
 import { roundBalance } from '../../common/tools';
 import { info } from '../broadcast';
-
-let balanceStr = '';
+import { observer as globalObserver } from '../../../common/utils/observer';
 
 export default Engine =>
     class Balance extends Engine {
@@ -11,26 +10,30 @@ export default Engine =>
                     balance: { balance: b, currency },
                 } = r;
 
-                this.balance = roundBalance({ currency, balance: b });
-                balanceStr = `${this.balance} ${currency}`;
+                const balance = roundBalance({ currency, balance: b });
+                const balanceStr = `${balance} ${currency}`;
+
+                globalObserver.setState({ balance, currency });
 
                 info({ accountID: this.accountInfo.loginid, balance: balanceStr });
             });
         }
         // eslint-disable-next-line class-methods-use-this
         getBalance(type) {
             const { scope } = this.store.getState();
-            let { balance } = this;
+            const currency = globalObserver.getState('currency');
+            let balance = globalObserver.getState('balance');
 
             // Deduct trade `amount` in this scope for correct value in `balance`-block
             if (scope === 'BEFORE_PURCHASE') {
                 balance = roundBalance({
-                    currency: this.tradeOptions.currency,
-                    balance : Number(balance) - this.tradeOptions.amount,
+                    balance: Number(balance) - this.tradeOptions.amount,
+                    currency,
                 });
-                balanceStr = `${balance} ${this.tradeOptions.currency}`;
             }
 
+            const balanceStr = `${balance}`;
+
             return type === 'STR' ? balanceStr : Number(balance);
         }
     };

src/botPage/bot/TradeEngine/index.js

@@ -118,8 +118,15 @@ export default class TradeEngine extends Balance(Purchase(Sell(OpenContract(Prop
 
                 // Only subscribe to balance in browser, not for tests.
                 if (document) {
-                    this.api.subscribeToBalance().then(r => {
-                        this.balance = Number(r.balance.balance);
+                    this.api.subscribeToBalance().then(response => {
+                        const {
+                            balance: { balance, currency },
+                        } = response;
+
+                        globalObserver.setState({
+                            balance: Number(balance),
+                            currency,
+                        });
                         resolve();
                     });
                 } else {

src/botPage/view/View.js

@@ -76,6 +76,8 @@ api.events.on('balance', response => {
         const element = elTopMenuBalance;
         element.textContent = `${balance} ${currency}`;
     });
+
+    globalObserver.setState({ balance: b, currency });
 });
 
 const addBalanceForToken = token => {