fix: Adds a fix to remove "Add a post" button when discussion is restricted (#742)

"Add a post" button  was visible even though the banner says that posting is
restricted. This change helps in removing the button when posting is restricted.

Signed-off-by: Farhaan Bukhsh <[email protected]>

Author: farhaanbukhsh

src/discussions/data/hooks.js

@@ -33,14 +33,11 @@ import { ContentSelectors } from './constants';
 import {
   selectAreThreadsFiltered,
   selectEnableInContext,
-  selectIsCourseAdmin,
-  selectIsCourseStaff,
   selectIsPostingEnabled,
   selectIsUserLearner,
   selectPostThreadCount,
   selectUserHasModerationPrivileges,
   selectUserIsGroupTa,
-  selectUserIsStaff,
 } from './selectors';
 import fetchCourseConfig from './thunks';
 
@@ -220,12 +217,9 @@ export const useCurrentDiscussionTopic = () => {
 
 export const useUserPostingEnabled = () => {
   const isPostingEnabled = useSelector(selectIsPostingEnabled);
-  const isUserAdmin = useSelector(selectUserIsStaff);
   const userHasModerationPrivileges = useSelector(selectUserHasModerationPrivileges);
   const isUserGroupTA = useSelector(selectUserIsGroupTa);
-  const isCourseAdmin = useSelector(selectIsCourseAdmin);
-  const isCourseStaff = useSelector(selectIsCourseStaff);
-  const isPrivileged = isUserAdmin || userHasModerationPrivileges || isUserGroupTA || isCourseAdmin || isCourseStaff;
+  const isPrivileged = userHasModerationPrivileges || isUserGroupTA;
 
   return (isPostingEnabled || isPrivileged);
 };

src/discussions/data/hooks.test.jsx

@@ -19,11 +19,11 @@ const courseConfigApiUrl = getCourseConfigApiUrl();
 let store;
 let axiosMock;
 
-const generateApiResponse = (isPostingEnabled, isCourseAdmin = false) => ({
+const generateApiResponse = (isPostingEnabled, hasModerationPrivileges = false) => ({
   isPostingEnabled,
-  hasModerationPrivileges: false,
+  hasModerationPrivileges,
   isGroupTa: false,
-  isCourseAdmin,
+  isCourseAdmin: false,
   isCourseStaff: false,
   isUserAdmin: false,
 });
@@ -160,7 +160,7 @@ describe('Hooks', () => {
         expect(queryByText('false')).toBeInTheDocument();
       });
 
-      test('when posting is not disabled and Role is not Learner return true', async () => {
+      test('when posting is disabled and Role is not Learner return true', async () => {
         axiosMock.onGet(`${courseConfigApiUrl}${courseId}/`)
           .reply(200, generateApiResponse(false, true));
         await executeThunk(fetchCourseConfig(courseId), store.dispatch, store.getState);