Feature/deprecate base currency (#1913)

* Deprecate BASE_CURRENCY

* Update changelog

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## Unreleased
+
+### Changed
+
+- Deprecated the use of the environment variable `BASE_CURRENCY`
+
 ## 1.263.0 - 2023-04-30
 
 ### Changed

apps/api/src/main.ts

@@ -32,12 +32,23 @@ async function bootstrap() {
   // Support 10mb csv/json files for importing activities
   app.use(bodyParser.json({ limit: '10mb' }));
 
+  const BASE_CURRENCY = configService.get<string>('BASE_CURRENCY');
   const HOST = configService.get<string>('HOST') || '0.0.0.0';
   const PORT = configService.get<number>('PORT') || 3333;
+
   await app.listen(PORT, HOST, () => {
     logLogo();
     Logger.log(`Listening at http://${HOST}:${PORT}`);
     Logger.log('');
+
+    if (BASE_CURRENCY) {
+      Logger.warn(
+        `The environment variable "BASE_CURRENCY" is deprecated and will be removed in Ghostfolio 2.0.`
+      );
+      Logger.warn(
+        'Please use the currency converter in the activity dialog instead.'
+      );
+    }
   });
 }