add admin interface, angular migration

src/app/ui/main/main.component.html

@@ -64,6 +64,11 @@
           <mat-icon>widgets</mat-icon> {{'services' | i18n}}
         </a>
       }
+      @if (auth && auth.authenticated && hasAdminRole()) {
+        <a routerLink="/admin" routerLinkActive="active" mat-list-item>
+          <mat-icon>admin_panel_settings</mat-icon> {{'admin.title' | i18n}}
+        </a>
+      }
       <a routerLink="/tokens" mat-list-item>
         <mat-icon>card_giftcard</mat-icon> {{'tokens.redeem' | i18n}}
       </a>

src/app/ui/main/main.component.ts

@@ -158,6 +158,13 @@ export class MainComponent {
     }
   }
 
+  hasAdminRole(): boolean {
+    if (this.auth && this.auth.authorities) {
+      return this.auth.authorities.some((auth: any) => auth.authority === 'ROLE_ADMIN');
+    }
+    return false;
+  }
+
   openExternal(url, target = '_self') {
     window.open(url, target);
   }