feat: restricted unnecessary api calls (#683)

* feat: restricted unnecessary api calls

* fix: fixed content unavailable issue for user admin

* refactor: refactor code for course status

src/discussions/data/hooks.js

@@ -72,19 +72,22 @@ export const useSidebarVisible = () => {
   return !hideSidebar;
 };
 
-export function useCourseDiscussionData(courseId) {
+export function useCourseDiscussionData(courseId, isEnrolled) {
   const dispatch = useDispatch();
   const { authenticatedUser } = useContext(AppContext);
 
   useEffect(() => {
     async function fetchBaseData() {
-      await dispatch(fetchCourseConfig(courseId));
-      await dispatch(fetchCourseBlocks(courseId, authenticatedUser.username));
-      await dispatch(fetchTab(courseId));
+      if (isEnrolled) {
+        await dispatch(fetchCourseConfig(courseId));
+        await dispatch(fetchCourseBlocks(courseId, authenticatedUser.username));
+      } else {
+        await dispatch(fetchTab(courseId));
+      }
     }
 
     fetchBaseData();
-  }, [courseId]);
+  }, [courseId, isEnrolled]);
 }
 
 export function useRedirectToThread(courseId, enableInContextSidebar) {

src/discussions/data/selectors.js

@@ -1,5 +1,7 @@
 import { createSelector } from '@reduxjs/toolkit';
 
+import selectCourseTabs from '../../components/NavigationBar/data/selectors';
+import { LOADED } from '../../components/NavigationBar/data/slice';
 import { PostsStatusFilter, ThreadType } from '../../data/constants';
 
 export const selectAnonymousPostingConfig = state => ({
@@ -69,12 +71,14 @@ export const selectIsUserLearner = createSelector(
   selectUserIsStaff,
   selectIsCourseAdmin,
   selectIsCourseStaff,
+  selectCourseTabs,
   (
     userHasModerationPrivileges,
     userIsGroupTa,
     userIsStaff,
     userIsCourseAdmin,
     userIsCourseStaff,
+    { courseStatus },
   ) => (
     (
       !userHasModerationPrivileges
@@ -82,6 +86,7 @@ export const selectIsUserLearner = createSelector(
       && !userIsStaff
       && !userIsCourseAdmin
       && !userIsCourseStaff
+      && courseStatus === LOADED
     ) || false
   ),
 );

src/discussions/discussions-home/DiscussionsHome.jsx

@@ -58,7 +58,7 @@ const DiscussionsHome = () => {
     courseId, postId, topicId, category, learnerUsername,
   } = params;
 
-  useCourseDiscussionData(courseId);
+  useCourseDiscussionData(courseId, isEnrolled);
   useRedirectToThread(courseId, enableInContextSidebar);
   useFeedbackWrapper();
   /*  Display the content area if we are currently viewing/editing a post or creating one.
@@ -172,7 +172,7 @@ const DiscussionsHome = () => {
               </div>
             )
           )}
-          {!enableInContextSidebar && (<DiscussionsProductTour />)}
+          {!enableInContextSidebar && isEnrolled && (<DiscussionsProductTour />)}
         </main>
         {!enableInContextSidebar && <Footer />}
       </DiscussionContext.Provider>