Task/improve language localization of asset classes in AI prompt (#7729)

* Improve language localization of asset classes

* Update changelog

CHANGELOG.md

@@ -15,6 +15,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Changed
 
+- Improved the language localization of the asset classes and asset sub classes in the holdings table of the _Copy AI prompt to clipboard for analysis_ action on the analysis page (experimental)
+- Improved the language localization of the asset classes and asset sub classes in the holdings table of the _Copy portfolio data to clipboard for AI prompt_ action on the analysis page (experimental)
 - Improved the logging of the `web_fetch` tool in the `FetchService`
 
 ## 3.61.0 - 2026-08-25

apps/api/src/app/endpoints/ai/ai.service.ts

@@ -1,5 +1,6 @@
 import { PortfolioService } from '@ghostfolio/api/app/portfolio/portfolio.service';
 import { ConfigurationService } from '@ghostfolio/api/services/configuration/configuration.service';
+import { I18nService } from '@ghostfolio/api/services/i18n/i18n.service';
 import { PropertyService } from '@ghostfolio/api/services/property/property.service';
 import {
   PROPERTY_API_KEY_OPENROUTER,
@@ -11,6 +12,7 @@ import type { AiPromptMode } from '@ghostfolio/common/types';
 
 import { Injectable } from '@nestjs/common';
 import { createOpenRouter } from '@openrouter/ai-sdk-provider';
+import { AssetClass, AssetSubClass } from '@prisma/client';
 import { generateText } from 'ai';
 import { format } from 'date-fns';
 import type { ColumnDescriptor } from 'tablemark';
@@ -44,6 +46,7 @@ export class AiService {
 
   public constructor(
     private readonly configurationService: ConfigurationService,
+    private readonly i18nService: I18nService,
     private readonly portfolioService: PortfolioService,
     private readonly propertyService: PropertyService
   ) {}
@@ -103,6 +106,18 @@ export class AiService {
         return { name, align: align ?? 'left' };
       });
 
+    const assetClassTranslations = this.getEnumTranslations({
+      languageCode,
+      id: 'assetClass',
+      values: Object.values(AssetClass)
+    });
+
+    const assetSubClassTranslations = this.getEnumTranslations({
+      languageCode,
+      id: 'assetSubClass',
+      values: Object.values(AssetSubClass)
+    });
+
     const holdingsTableRows = Object.values(holdings)
       .sort((a, b) => {
         return b.allocationInPercentage - a.allocationInPercentage;
@@ -132,11 +147,11 @@ export class AiService {
                   break;
 
                 case 'ASSET_CLASS':
-                  row[name] = assetClass ?? '';
+                  row[name] = assetClassTranslations[assetClass] ?? '';
                   break;
 
                 case 'ASSET_SUB_CLASS':
-                  row[name] = assetSubClass ?? '';
+                  row[name] = assetSubClassTranslations[assetSubClass] ?? '';
                   break;
 
                 case 'CURRENCY':
@@ -202,4 +217,27 @@ export class AiService {
       `Provide your answer in the following language: ${languageCode}.`
     ].join('\n');
   }
+
+  private getEnumTranslations<T extends string>({
+    id,
+    languageCode,
+    values
+  }: {
+    id: string;
+    languageCode: string;
+    values: T[];
+  }) {
+    return values.reduce(
+      (translations, value) => {
+        translations[value] =
+          this.i18nService.getTranslation({
+            languageCode,
+            id: `${id}.${value}`
+          }) || value;
+
+        return translations;
+      },
+      {} as Record<T, string>
+    );
+  }
 }

apps/api/src/app/endpoints/mcp/mcp.controller.ts

@@ -32,7 +32,7 @@ export class GhostfolioMcpController {
     const prompt = await this.aiService.getPrompt({
       filters,
       userId,
-      languageCode: userSettings.language ?? DEFAULT_LANGUAGE_CODE,
+      languageCode: DEFAULT_LANGUAGE_CODE,
       mode: 'portfolio',
       userCurrency: userSettings.baseCurrency
     });

apps/api/src/services/i18n/i18n.service.ts

@@ -25,15 +25,21 @@ export class I18nService implements OnModuleInit {
     languageCode: string;
     placeholders?: Record<string, string | number>;
   }): string {
-    const $ = this.translations[languageCode];
+    const languageCodeToUse = this.translations[languageCode]
+      ? languageCode
+      : DEFAULT_LANGUAGE_CODE;
+
+    const $ = this.translations[languageCodeToUse];
 
     if (!$) {
       this.logger.warn(`Translation not found for locale '${languageCode}'`);
+
+      return '';
     }
 
     let translatedText = $(
       `trans-unit[id="${id}"] > ${
-        languageCode === DEFAULT_LANGUAGE_CODE ? 'source' : 'target'
+        languageCodeToUse === DEFAULT_LANGUAGE_CODE ? 'source' : 'target'
       }`
     ).text();
 

apps/client/src/app/pages/i18n/i18n-page.html

@@ -1,6 +1,23 @@
 <div class="container">
   <div class="row">
     <ul>
+      <li i18n="@@assetClass.ALTERNATIVE_INVESTMENT">Alternative Investment</li>
+      <li i18n="@@assetClass.COMMODITY">Commodity</li>
+      <li i18n="@@assetClass.EQUITY">Equity</li>
+      <li i18n="@@assetClass.FIXED_INCOME">Fixed Income</li>
+      <li i18n="@@assetClass.LIQUIDITY">Liquidity</li>
+      <li i18n="@@assetClass.REAL_ESTATE">Real Estate</li>
+      <li i18n="@@assetSubClass.BOND">Bond</li>
+      <li i18n="@@assetSubClass.CASH">Cash</li>
+      <li i18n="@@assetSubClass.COLLECTIBLE">Collectible</li>
+      <li i18n="@@assetSubClass.COMMODITY">Commodity</li>
+      <li i18n="@@assetSubClass.CRYPTOCURRENCY">Cryptocurrency</li>
+      <li i18n="@@assetSubClass.ETF">ETF</li>
+      <li i18n="@@assetSubClass.LOAN">Loan</li>
+      <li i18n="@@assetSubClass.MUTUALFUND">Mutual Fund</li>
+      <li i18n="@@assetSubClass.PRECIOUS_METAL">Precious Metal</li>
+      <li i18n="@@assetSubClass.PRIVATE_EQUITY">Private Equity</li>
+      <li i18n="@@assetSubClass.STOCK">Stock</li>
       <li i18n="@@metaDescription">
         Ghostfolio is a personal finance dashboard to keep track of your net
         worth including cash, stocks, ETFs and cryptocurrencies across multiple