Fix “load more” adding older toots/notifications to pending items (mastodon#11883)

Author: ClearlyClaire

app/javascript/mastodon/actions/notifications.js

@@ -151,7 +151,7 @@ export function expandNotifications({ maxId } = {}, done = noOp) {
       dispatch(importFetchedAccounts(response.data.map(item => item.account)));
       dispatch(importFetchedStatuses(response.data.map(item => item.status).filter(status => !!status)));
 
-      dispatch(expandNotificationsSuccess(response.data, next ? next.uri : null, isLoadingMore, isLoadingRecent && preferPendingItems));
+      dispatch(expandNotificationsSuccess(response.data, next ? next.uri : null, isLoadingMore, isLoadingRecent, isLoadingRecent && preferPendingItems));
       fetchRelatedRelationships(dispatch, response.data);
       done();
     }).catch(error => {
@@ -168,11 +168,12 @@ export function expandNotificationsRequest(isLoadingMore) {
   };
 };
 
-export function expandNotificationsSuccess(notifications, next, isLoadingMore, usePendingItems) {
+export function expandNotificationsSuccess(notifications, next, isLoadingMore, isLoadingRecent, usePendingItems) {
   return {
     type: NOTIFICATIONS_EXPAND_SUCCESS,
     notifications,
     next,
+    isLoadingRecent: isLoadingRecent,
     usePendingItems,
     skipLoading: !isLoadingMore,
   };

app/javascript/mastodon/reducers/notifications.js

@@ -54,7 +54,7 @@ const normalizeNotification = (state, notification, usePendingItems) => {
   });
 };
 
-const expandNormalizedNotifications = (state, notifications, next, usePendingItems) => {
+const expandNormalizedNotifications = (state, notifications, next, isLoadingRecent, usePendingItems) => {
   let items = ImmutableList();
 
   notifications.forEach((n, i) => {
@@ -63,7 +63,7 @@ const expandNormalizedNotifications = (state, notifications, next, usePendingIte
 
   return state.withMutations(mutable => {
     if (!items.isEmpty()) {
-      usePendingItems = usePendingItems || !mutable.get('top') || !mutable.get('pendingItems').isEmpty();
+      usePendingItems = isLoadingRecent && (usePendingItems || !mutable.get('top') || !mutable.get('pendingItems').isEmpty());
 
       mutable.update(usePendingItems ? 'pendingItems' : 'items', list => {
         const lastIndex = 1 + list.findLastIndex(
@@ -119,7 +119,7 @@ export default function notifications(state = initialState, action) {
   case NOTIFICATIONS_UPDATE:
     return normalizeNotification(state, action.notification, action.usePendingItems);
   case NOTIFICATIONS_EXPAND_SUCCESS:
-    return expandNormalizedNotifications(state, action.notifications, action.next, action.usePendingItems);
+    return expandNormalizedNotifications(state, action.notifications, action.next, action.isLoadingRecent, action.usePendingItems);
   case ACCOUNT_BLOCK_SUCCESS:
     return filterNotifications(state, [action.relationship.id]);
   case ACCOUNT_MUTE_SUCCESS:

app/javascript/mastodon/reducers/timelines.js

@@ -40,7 +40,7 @@ const expandNormalizedTimeline = (state, timeline, statuses, next, isPartial, is
     if (timeline.endsWith(':pinned')) {
       mMap.set('items', statuses.map(status => status.get('id')));
     } else if (!statuses.isEmpty()) {
-      usePendingItems = usePendingItems || !mMap.get('top') || !mMap.get('pendingItems').isEmpty();
+      usePendingItems = isLoadingRecent && (usePendingItems || !mMap.get('top') || !mMap.get('pendingItems').isEmpty());
       mMap.update(usePendingItems ? 'pendingItems' : 'items', ImmutableList(), oldIds => {
         const newIds = statuses.map(status => status.get('id'));