[DSC-1601] - Adjusted code for fixing requested

Author: Simone-Ramundi

src/app/item-page/full/field-components/file-section/full-file-section.component.html

@@ -34,7 +34,7 @@ <h5 class="simple-view-element-header">{{"item.page.filesection.original.bundle"
                         </dl>
                     </div>
                     <div *ngIf="!hasNoDownload(file)" class="col-2">
-                        <ds-themed-file-download-link [showIcon]="(canDownload(file) | async)" [bitstream]="file" [item]="item">
+                        <ds-themed-file-download-link [showIcon]="!(canDownload(file) | async)" [bitstream]="file" [item]="item">
                           {{"item.page.filesection.download" | translate}}
                         </ds-themed-file-download-link>
                     </div>

src/app/item-page/full/field-components/file-section/full-file-section.component.ts

@@ -9,7 +9,7 @@ import { FileSectionComponent } from '../../../simple/field-components/file-sect
 import { PaginationComponentOptions } from '../../../../shared/pagination/pagination-component-options.model';
 import { PaginatedList } from '../../../../core/data/paginated-list.model';
 import { RemoteData } from '../../../../core/data/remote-data';
-import { map, switchMap, tap } from 'rxjs/operators';
+import { switchMap, tap } from 'rxjs/operators';
 import { NotificationsService } from '../../../../shared/notifications/notifications.service';
 import { TranslateService } from '@ngx-translate/core';
 import { hasValue, isEmpty } from '../../../../shared/empty.util';
@@ -116,9 +116,7 @@ export class FullFileSectionComponent extends FileSectionComponent implements On
   }
 
   canDownload(file: Bitstream): Observable<boolean> {
-    return this.authorizationService.isAuthorized(FeatureID.CanDownload, file.self).pipe(
-      map(value => !value),
-    );
+    return this.authorizationService.isAuthorized(FeatureID.CanDownload, file.self);
   }
 
   ngOnDestroy(): void {