Task/improve validation of currency management in Admin Control panel (#5973)

* Improve validation (disallow GBp)

* Update changelog

CHANGELOG.md

@@ -14,6 +14,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 
 - Disabled the action to delete activities if the activities table is empty
+- Improved the validation of the currency management in the admin control panel
 - Resolved the data source of the `GHOSTFOLIO` data provider in the export functionality
 - Resolved the data source of the `GHOSTFOLIO` data provider in the import functionality
 - Refreshed the cryptocurrencies list

apps/client/src/app/components/admin-market-data/create-asset-profile-dialog/create-asset-profile-dialog.component.ts

@@ -107,9 +107,8 @@ export class GfCreateAssetProfileDialogComponent implements OnDestroy, OnInit {
         symbol: this.createAssetProfileForm.get('searchSymbol').value.symbol
       });
     } else if (this.mode === 'currency') {
-      const currency = (
-        this.createAssetProfileForm.get('addCurrency').value as string
-      ).toUpperCase();
+      const currency = this.createAssetProfileForm.get('addCurrency')
+        .value as string;
 
       const currencies = Array.from(
         new Set([...this.customCurrencies, currency])
@@ -201,7 +200,10 @@ export class GfCreateAssetProfileDialogComponent implements OnDestroy, OnInit {
 
   private iso4217CurrencyCodeValidator(): ValidatorFn {
     return (control: AbstractControl): ValidationErrors | null => {
-      if (!isISO4217CurrencyCode(control.value?.toUpperCase())) {
+      if (
+        control.value !== control.value?.toUpperCase() ||
+        !isISO4217CurrencyCode(control.value)
+      ) {
         return { invalidCurrency: true };
       }