Feature/automatically gather required exchange rates (#5917)

* Automatically gather required exchange rates

* Update changelog

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+### Added
+
+- Introduced support for automatically gathering required exchange rates, exposed as an environment variable (`ENABLE_FEATURE_GATHER_NEW_EXCHANGE_RATES`)
+
 ### Changed
 
 - Refactored the get holding functionality in the portfolio service

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

@@ -1,4 +1,5 @@
 import { AccountService } from '@ghostfolio/api/app/account/account.service';
+import { AssetProfileChangedEvent } from '@ghostfolio/api/events/asset-profile-changed.event';
 import { PortfolioChangedEvent } from '@ghostfolio/api/events/portfolio-changed.event';
 import { LogPerformance } from '@ghostfolio/api/interceptors/performance-logging/performance-logging.interceptor';
 import { ExchangeRateDataService } from '@ghostfolio/api/services/exchange-rate-data/exchange-rate-data.service';
@@ -225,6 +226,15 @@ export class OrderService {
       });
     }
 
+    this.eventEmitter.emit(
+      AssetProfileChangedEvent.getName(),
+      new AssetProfileChangedEvent({
+        currency: order.SymbolProfile.currency,
+        dataSource: order.SymbolProfile.dataSource,
+        symbol: order.SymbolProfile.symbol
+      })
+    );
+
     this.eventEmitter.emit(
       PortfolioChangedEvent.getName(),
       new PortfolioChangedEvent({

apps/api/src/events/asset-profile-changed.event.ts

@@ -0,0 +1,11 @@
+import { AssetProfileIdentifier } from '@ghostfolio/common/interfaces';
+
+export class AssetProfileChangedEvent {
+  public constructor(
+    public readonly data: AssetProfileIdentifier & { currency: string }
+  ) {}
+
+  public static getName(): string {
+    return 'assetProfile.changed';
+  }
+}

apps/api/src/events/asset-profile-changed.listener.ts

@@ -0,0 +1,61 @@
+import { OrderService } from '@ghostfolio/api/app/order/order.service';
+import { ConfigurationService } from '@ghostfolio/api/services/configuration/configuration.service';
+import { DataProviderService } from '@ghostfolio/api/services/data-provider/data-provider.service';
+import { ExchangeRateDataService } from '@ghostfolio/api/services/exchange-rate-data/exchange-rate-data.service';
+import { DataGatheringService } from '@ghostfolio/api/services/queues/data-gathering/data-gathering.service';
+import { DEFAULT_CURRENCY } from '@ghostfolio/common/config';
+
+import { Injectable, Logger } from '@nestjs/common';
+import { OnEvent } from '@nestjs/event-emitter';
+
+import { AssetProfileChangedEvent } from './asset-profile-changed.event';
+
+@Injectable()
+export class AssetProfileChangedListener {
+  public constructor(
+    private readonly configurationService: ConfigurationService,
+    private readonly dataGatheringService: DataGatheringService,
+    private readonly dataProviderService: DataProviderService,
+    private readonly exchangeRateDataService: ExchangeRateDataService,
+    private readonly orderService: OrderService
+  ) {}
+
+  @OnEvent(AssetProfileChangedEvent.getName())
+  public async handleAssetProfileChanged(event: AssetProfileChangedEvent) {
+    Logger.log(
+      `Asset profile of ${event.data.symbol} (${event.data.dataSource}) has changed`,
+      'AssetProfileChangedListener'
+    );
+
+    if (
+      this.configurationService.get(
+        'ENABLE_FEATURE_GATHER_NEW_EXCHANGE_RATES'
+      ) === false ||
+      event.data.currency === DEFAULT_CURRENCY
+    ) {
+      return;
+    }
+
+    const existingCurrencies = this.exchangeRateDataService.getCurrencies();
+
+    if (!existingCurrencies.includes(event.data.currency)) {
+      Logger.log(
+        `New currency ${event.data.currency} has been detected`,
+        'AssetProfileChangedListener'
+      );
+
+      await this.exchangeRateDataService.initialize();
+    }
+
+    const { dateOfFirstActivity } =
+      await this.orderService.getStatisticsByCurrency(event.data.currency);
+
+    if (dateOfFirstActivity) {
+      await this.dataGatheringService.gatherSymbol({
+        dataSource: this.dataProviderService.getDataSourceForExchangeRates(),
+        date: dateOfFirstActivity,
+        symbol: `${DEFAULT_CURRENCY}${event.data.currency}`
+      });
+    }
+  }
+}

apps/api/src/events/events.module.ts

@@ -1,11 +1,24 @@
+import { OrderModule } from '@ghostfolio/api/app/order/order.module';
 import { RedisCacheModule } from '@ghostfolio/api/app/redis-cache/redis-cache.module';
+import { ConfigurationModule } from '@ghostfolio/api/services/configuration/configuration.module';
+import { DataProviderModule } from '@ghostfolio/api/services/data-provider/data-provider.module';
+import { ExchangeRateDataModule } from '@ghostfolio/api/services/exchange-rate-data/exchange-rate-data.module';
+import { DataGatheringModule } from '@ghostfolio/api/services/queues/data-gathering/data-gathering.module';
 
 import { Module } from '@nestjs/common';
 
+import { AssetProfileChangedListener } from './asset-profile-changed.listener';
 import { PortfolioChangedListener } from './portfolio-changed.listener';
 
 @Module({
-  imports: [RedisCacheModule],
+  imports: [
-  providers: [PortfolioChangedListener]
+    ConfigurationModule,
+    DataGatheringModule,
+    DataProviderModule,
+    ExchangeRateDataModule,
+    OrderModule,
+    RedisCacheModule
+  ],
+  providers: [AssetProfileChangedListener, PortfolioChangedListener]
 })
 export class EventsModule {}

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

@@ -43,6 +43,7 @@ export class ConfigurationService {
       ENABLE_FEATURE_AUTH_GOOGLE: bool({ default: false }),
       ENABLE_FEATURE_AUTH_TOKEN: bool({ default: true }),
       ENABLE_FEATURE_FEAR_AND_GREED_INDEX: bool({ default: false }),
+      ENABLE_FEATURE_GATHER_NEW_EXCHANGE_RATES: bool({ default: true }),
       ENABLE_FEATURE_READ_ONLY_MODE: bool({ default: false }),
       ENABLE_FEATURE_STATISTICS: bool({ default: false }),
       ENABLE_FEATURE_SUBSCRIPTION: bool({ default: false }),

apps/api/src/services/interfaces/environment.interface.ts

@@ -19,6 +19,7 @@ export interface Environment extends CleanedEnvAccessors {
   ENABLE_FEATURE_AUTH_GOOGLE: boolean;
   ENABLE_FEATURE_AUTH_TOKEN: boolean;
   ENABLE_FEATURE_FEAR_AND_GREED_INDEX: boolean;
+  ENABLE_FEATURE_GATHER_NEW_EXCHANGE_RATES: boolean;
   ENABLE_FEATURE_READ_ONLY_MODE: boolean;
   ENABLE_FEATURE_STATISTICS: boolean;
   ENABLE_FEATURE_SUBSCRIPTION: boolean;