Feature/improve exception handling of current investments in various rules (#3156)

* Improve exception handling

* Update changelog

CHANGELOG.md

@@ -17,6 +17,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Improved the usability of the platform management in the admin control panel
 - Improved the usability of the tag management in the admin control panel
+- Improved the exception handling of various rules in the _X-ray_ section
 
 ### Fixed
 

apps/api/src/models/rules/account-cluster-risk/current-investment.ts

@@ -35,7 +35,7 @@ export class AccountClusterRiskCurrentInvestment extends Rule<Settings> {
       };
     }
 
-    let maxItem;
+    let maxItem: (typeof accounts)[0];
     let totalInvestment = 0;
 
     for (const account of Object.values(accounts)) {
@@ -52,7 +52,7 @@ export class AccountClusterRiskCurrentInvestment extends Rule<Settings> {
       }
     }
 
-    const maxInvestmentRatio = maxItem.investment / totalInvestment;
+    const maxInvestmentRatio = maxItem?.investment / totalInvestment || 0;
 
     if (maxInvestmentRatio > ruleSettings.threshold) {
       return {

apps/api/src/models/rules/currency-cluster-risk/base-currency-current-investment.ts

@@ -43,7 +43,7 @@ export class CurrencyClusterRiskBaseCurrencyCurrentInvestment extends Rule<Setti
 
     const baseCurrencyValueRatio = baseCurrencyItem?.value / totalValue || 0;
 
-    if (maxItem.groupKey !== ruleSettings.baseCurrency) {
+    if (maxItem?.groupKey !== ruleSettings.baseCurrency) {
       return {
         evaluation: `The major part of your current investment is not in your base currency (${(
           baseCurrencyValueRatio * 100

apps/api/src/models/rules/currency-cluster-risk/current-investment.ts

@@ -37,7 +37,7 @@ export class CurrencyClusterRiskCurrentInvestment extends Rule<Settings> {
       }
     });
 
-    const maxValueRatio = maxItem.value / totalValue;
+    const maxValueRatio = maxItem?.value / totalValue || 0;
 
     if (maxValueRatio > ruleSettings.threshold) {
       return {
@@ -52,7 +52,7 @@ export class CurrencyClusterRiskCurrentInvestment extends Rule<Settings> {
 
     return {
       evaluation: `The major part of your current investment is in ${
-        maxItem.groupKey
+        maxItem?.groupKey ?? ruleSettings.baseCurrency
       } (${(maxValueRatio * 100).toPrecision(3)}%) and does not exceed ${
         ruleSettings.threshold * 100
       }%`,