performance percentage is 100% if average buy price is zero and performance value is not null

apps/api/src/app/portfolio/calculator/roai/portfolio-calculator.ts

@@ -783,6 +783,8 @@ export class RoaiPortfolioCalculator extends PortfolioCalculator {
         ? totalGrossPerformance.div(
             timeWeightedAverageInvestmentBetweenStartAndEndDate
           )
+        : totalGrossPerformance
+          ? new Big(1)
           : new Big(0);
 
     const grossPerformancePercentageWithCurrencyEffect =
@@ -792,6 +794,8 @@ export class RoaiPortfolioCalculator extends PortfolioCalculator {
         ? totalGrossPerformanceWithCurrencyEffect.div(
             timeWeightedAverageInvestmentBetweenStartAndEndDateWithCurrencyEffect
           )
+        : totalGrossPerformanceWithCurrencyEffect
+          ? new Big(1)
           : new Big(0);
 
     const feesPerUnit = totalUnits.gt(0)
@@ -809,6 +813,8 @@ export class RoaiPortfolioCalculator extends PortfolioCalculator {
         ? totalNetPerformance.div(
             timeWeightedAverageInvestmentBetweenStartAndEndDate
           )
+        : totalNetPerformance
+          ? new Big(1)
           : new Big(0);
 
     const netPerformancePercentageWithCurrencyEffectMap: {
@@ -902,6 +908,8 @@ export class RoaiPortfolioCalculator extends PortfolioCalculator {
 
       netPerformancePercentageWithCurrencyEffectMap[dateRange] = average.gt(0)
         ? netPerformanceWithCurrencyEffectMap[dateRange].div(average)
+        : netPerformanceWithCurrencyEffectMap[dateRange]
+          ? new Big(1)
           : new Big(0);
     }