fix: fixed author liking its own post (#729)

src/discussions/common/HoverCard.jsx

@@ -12,7 +12,7 @@ import classNames from 'classnames';
 import { useIntl } from '@edx/frontend-platform/i18n';
 
 import { ThreadType } from '../../data/constants';
-import { useUserPostingEnabled } from '../data/hooks';
+import { useHasLikePermission, useUserPostingEnabled } from '../data/hooks';
 import PostCommentsContext from '../post-comments/postCommentsContext';
 import ActionsDropdown from './ActionsDropdown';
 import DiscussionContext from './context';
@@ -33,6 +33,7 @@ const HoverCard = ({
   const { enableInContextSidebar } = useContext(DiscussionContext);
   const { isClosed } = useContext(PostCommentsContext);
   const isUserPrivilegedInPostingRestriction = useUserPostingEnabled();
+  const userHasLikePermission = useHasLikePermission(contentType, id);
 
   return (
     <div
@@ -86,6 +87,7 @@ const HoverCard = ({
           iconAs={Icon}
           size="sm"
           alt="Like"
+          disabled={!userHasLikePermission}
           iconClassNames="like-icon-dimensions"
           onClick={(e) => {
             e.preventDefault();

src/discussions/data/hooks.js

@@ -16,18 +16,20 @@ import { AppContext } from '@edx/frontend-platform/react';
 import selectCourseTabs from '../../components/NavigationBar/data/selectors';
 import { LOADED } from '../../components/NavigationBar/data/slice';
 import fetchTab from '../../components/NavigationBar/data/thunks';
-import { RequestStatus, Routes } from '../../data/constants';
+import { ContentActions, RequestStatus, Routes } from '../../data/constants';
 import { selectTopicsUnderCategory } from '../../data/selectors';
 import fetchCourseBlocks from '../../data/thunks';
 import DiscussionContext from '../common/context';
+import PostCommentsContext from '../post-comments/postCommentsContext';
 import { clearRedirect } from '../posts/data';
 import { threadsLoadingStatus } from '../posts/data/selectors';
 import { selectTopics } from '../topics/data/selectors';
 import tourCheckpoints from '../tours/constants';
 import selectTours from '../tours/data/selectors';
 import { updateTourShowStatus } from '../tours/data/thunks';
 import messages from '../tours/messages';
-import { discussionsPath } from '../utils';
+import { checkPermissions, discussionsPath } from '../utils';
+import { ContentSelectors } from './constants';
 import {
   selectAreThreadsFiltered,
   selectEnableInContext,
@@ -284,3 +286,10 @@ export const useDebounce = (value, delay) => {
   );
   return debouncedValue;
 };
+
+export const useHasLikePermission = (contentType, id) => {
+  const { postType } = useContext(PostCommentsContext);
+  const content = { ...useSelector(ContentSelectors[contentType](id)), postType };
+
+  return checkPermissions(content, ContentActions.VOTE);
+};