Combine portfolio calculator creation

apps/api/src/app/portfolio/portfolio.service.ts

@@ -356,6 +356,7 @@ export class PortfolioService {
       withExcludedAccounts
     });
 
+    // TODO: 1. Create portfolio calculator
     const portfolioCalculator = this.calculatorFactory.createCalculator({
       activities,
       calculationType: PerformanceCalculationType.TWR,
@@ -1151,6 +1152,7 @@ export class PortfolioService {
       };
     }
 
+    // TODO: 2. Create portfolio calculator
     const portfolioCalculator = this.calculatorFactory.createCalculator({
       activities,
       calculationType: PerformanceCalculationType.TWR,
@@ -1769,12 +1771,14 @@ export class PortfolioService {
 
     const daysInMarket = differenceInDays(new Date(), firstOrderDate);
 
-    const annualizedPerformancePercent = this.calculatorFactory
-      .createCalculator({
+    // TODO: 3. Create portfolio calculator
+    const portfolioCalculator = this.calculatorFactory.createCalculator({
       activities: [],
       calculationType: PerformanceCalculationType.TWR,
       currency: userCurrency
-      })
+    });
+
+    const annualizedPerformancePercent = portfolioCalculator
       .getAnnualizedPerformancePercent({
         daysInMarket,
         netPerformancePercent: new Big(
@@ -1783,13 +1787,7 @@ export class PortfolioService {
       })
       ?.toNumber();
 
-    const annualizedPerformancePercentWithCurrencyEffect =
-      this.calculatorFactory
-        .createCalculator({
-          activities: [],
-          calculationType: PerformanceCalculationType.TWR,
-          currency: userCurrency
-        })
+    const annualizedPerformancePercentWithCurrencyEffect = portfolioCalculator
       .getAnnualizedPerformancePercent({
         daysInMarket,
         netPerformancePercent: new Big(