Communication: Fix visibility of create channel option for students

src/main/webapp/app/overview/course-conversations/course-conversations.component.ts

@@ -40,6 +40,7 @@ import { CourseSidebarService } from 'app/overview/course-sidebar.service';
 import { LayoutService } from 'app/shared/breakpoints/layout.service';
 import { CustomBreakpointNames } from 'app/shared/breakpoints/breakpoints.service';
 import { Posting, PostingType, SavedPostStatus, SavedPostStatusMap } from 'app/entities/metis/posting.model';
+import { canCreateChannel } from 'app/shared/metis/conversations/conversation-permissions.utils';
 
 const DEFAULT_CHANNEL_GROUPS: AccordionGroups = {
     favoriteChannels: { entityData: [] },
@@ -424,6 +425,7 @@ export class CourseConversationsComponent implements OnInit, OnDestroy {
             ungroupedData: this.sidebarConversations,
             showAccordionLeadingIcon: true,
             messagingEnabled: isMessagingEnabled(this.course),
+            canCreateChannel: canCreateChannel(this.course!),
         };
     }
 

src/main/webapp/app/shared/sidebar/sidebar.component.html

@@ -35,10 +35,12 @@
                                             <span jhiTranslate="artemisApp.courseOverview.sidebar.createGroupChat"></span>
                                         </button>
                                     }
-                                    <button (click)="createNewChannel()" class="p-2" ngbDropdownItem>
-                                        <fa-icon [icon]="faHashtag" class="item-icon"></fa-icon>
-                                        <span jhiTranslate="artemisApp.courseOverview.sidebar.createChannel"></span>
-                                    </button>
+                                    @if (sidebarData?.canCreateChannel) {
+                                        <button (click)="createNewChannel()" class="p-2 createChannel" ngbDropdownItem>
+                                            <fa-icon [icon]="faHashtag" class="item-icon"></fa-icon>
+                                            <span jhiTranslate="artemisApp.courseOverview.sidebar.createChannel"></span>
+                                        </button>
+                                    }
                                     <button (click)="browseChannels()" class="p-2" ngbDropdownItem>
                                         <fa-icon [icon]="faSearch" class="item-icon"></fa-icon>
                                         <span jhiTranslate="artemisApp.courseOverview.sidebar.browseChannels"></span>

src/main/webapp/app/types/sidebar.ts

@@ -41,6 +41,7 @@ export interface SidebarData {
     storageId?: string;
     showAccordionLeadingIcon?: boolean;
     messagingEnabled?: boolean;
+    canCreateChannel?: boolean;
 }
 
 export interface SidebarCardElement {

src/test/javascript/spec/component/shared/sidebar/sidebar.component.spec.ts

@@ -17,7 +17,7 @@ import { SidebarCardElement, SidebarData } from 'app/types/sidebar';
 import { NgbModal, NgbModalRef } from '@ng-bootstrap/ng-bootstrap';
 import { ExerciseFilterModalComponent } from 'app/shared/exercise-filter/exercise-filter-modal.component';
 import { ExerciseFilterResults } from 'app/types/exercise-filter';
-import { EventEmitter } from '@angular/core';
+import { EventEmitter, input, runInInjectionContext } from '@angular/core';
 import { ExerciseCategory } from 'app/entities/exercise-category.model';
 import { ExerciseType } from 'app/entities/exercise.model';
 import { IconProp } from '@fortawesome/fontawesome-svg-core';
@@ -49,9 +49,7 @@ describe('SidebarComponent', () => {
             ],
             providers: [MockProvider(NgbModal)],
         }).compileComponents();
-    });
 
-    beforeEach(() => {
         fixture = TestBed.createComponent(SidebarComponent);
         component = fixture.componentInstance;
         modalService = TestBed.inject(NgbModal);
@@ -288,5 +286,27 @@ describe('SidebarComponent', () => {
             expect(component.exerciseFilters).toEqual(mockFilterResults.appliedExerciseFilters);
             expect(component.isFilterActive).toBeTrue();
         });
+
+        it('should show "Create Channel" button when canCreateChannel is true', () => {
+            runInInjectionContext(fixture.debugElement.injector, () => {
+                component.inCommunication = input<boolean>(true);
+                component.ngOnInit();
+                component.sidebarData.canCreateChannel = true;
+                fixture.detectChanges();
+                const createChannelButton = fixture.debugElement.query(By.css('.createChannel'));
+                expect(createChannelButton).toBeTruthy();
+            });
+        });
+
+        it('should not show "Create Channel" button when canCreateChannel is false', () => {
+            runInInjectionContext(fixture.debugElement.injector, () => {
+                component.inCommunication = input<boolean>(true);
+                component.ngOnInit();
+                component.sidebarData.canCreateChannel = false;
+                fixture.detectChanges();
+                const createChannelButton = fixture.debugElement.query(By.css('.createChannel'));
+                expect(createChannelButton).toBeFalsy();
+            });
+        });
     });
 });