add asia pacific regional market cluster risk

apps/api/src/models/rules/regional-market-cluster-risk/asia-pacific.ts

@@ -0,0 +1,77 @@
+import { Rule } from '@ghostfolio/api/models/rule';
+import { ExchangeRateDataService } from '@ghostfolio/api/services/exchange-rate-data/exchange-rate-data.service';
+import { UserSettings } from '@ghostfolio/common/interfaces';
+
+import { Settings } from './interfaces/rule-settings.interface';
+
+export class RegionalMarketClusterRiskAsiaPacific extends Rule<Settings> {
+  private currentValueInBaseCurrency: number;
+  private asiaPacificValueInBaseCurrency: number;
+
+  public constructor(
+    protected exchangeRateDataService: ExchangeRateDataService,
+    currentValueInBaseCurrency: number,
+    asiaPacificValueInBaseCurrency: number
+  ) {
+    super(exchangeRateDataService, {
+      key: RegionalMarketClusterRiskAsiaPacific.name,
+      name: 'Asia Pacific'
+    });
+
+    this.currentValueInBaseCurrency = currentValueInBaseCurrency;
+    this.asiaPacificValueInBaseCurrency = asiaPacificValueInBaseCurrency;
+  }
+
+  public evaluate(ruleSettings: Settings) {
+    const asiaPacificMarketValueRatio = this.currentValueInBaseCurrency
+      ? this.asiaPacificValueInBaseCurrency / this.currentValueInBaseCurrency
+      : 0;
+
+    if (asiaPacificMarketValueRatio > ruleSettings.thresholdMax) {
+      return {
+        evaluation: `The Japan market contribution of your current investment (${(asiaPacificMarketValueRatio * 100).toPrecision(3)}%) exceeds ${(
+          ruleSettings.thresholdMax * 100
+        ).toPrecision(3)}%`,
+        value: false
+      };
+    } else if (asiaPacificMarketValueRatio < ruleSettings.thresholdMin) {
+      return {
+        evaluation: `The Japan market contribution of your current investment (${(asiaPacificMarketValueRatio * 100).toPrecision(3)}%) is below ${(
+          ruleSettings.thresholdMin * 100
+        ).toPrecision(3)}%`,
+        value: false
+      };
+    }
+
+    return {
+      evaluation: `The Japan market contribution of your current investment (${(asiaPacificMarketValueRatio * 100).toPrecision(3)}%) is within the range of ${(
+        ruleSettings.thresholdMin * 100
+      ).toPrecision(
+        3
+      )}% and ${(ruleSettings.thresholdMax * 100).toPrecision(3)}%`,
+      value: true
+    };
+  }
+
+  public getConfiguration() {
+    return {
+      threshold: {
+        max: 1,
+        min: 0,
+        step: 0.01,
+        unit: '%'
+      },
+      thresholdMax: true,
+      thresholdMin: true
+    };
+  }
+
+  public getSettings({ baseCurrency, xRayRules }: UserSettings): Settings {
+    return {
+      baseCurrency,
+      isActive: xRayRules?.[this.getKey()]?.isActive ?? true,
+      thresholdMax: xRayRules?.[this.getKey()]?.thresholdMax ?? 0.03,
+      thresholdMin: xRayRules?.[this.getKey()]?.thresholdMin ?? 0.02
+    };
+  }
+}