fix timeline preload state check

internal/cache/timeline/status.go

@@ -74,6 +74,8 @@ type StatusMeta struct {
 // as-needed, caching prepared frontend representations where
 // possible. This is largely wrapping code for our own codebase
 // to be able to smoothly interact with structr.Timeline{}.
+
+// ...
 type StatusTimeline struct {
 
 	// underlying timeline cache of *StatusMeta{},
@@ -302,7 +304,7 @@ func (t *StatusTimeline) Preload(
 
 			// Check if seen recently.
 			last := recentBoosts[id]
-			value.repeatBoost = last < 40
+			value.repeatBoost = (last < 40)
 
 			// Update last-seen idx.
 			recentBoosts[id] = idx
@@ -311,8 +313,12 @@ func (t *StatusTimeline) Preload(
 
 	// Mark timeline as preloaded.
 	old := t.preload.Swap(new(any))
-	if old != nil && *old != false {
-		log.Errorf(ctx, "BUG: invalid timeline preload state: %#v", *old)
+	if old != nil {
+		switch t := (*old).(type) {
+		case *sync.WaitGroup:
+		default:
+			log.Errorf(ctx, "BUG: invalid timeline preload state: %#v", t)
+		}
 	}
 
 	return n, nil

internal/processing/timeline/home.go

@@ -90,35 +90,3 @@ func (p *Processor) HomeTimelineGet(
 		},
 	)
 }
-
-// preloadHomeTimeline will ensure that the timeline
-// cache for home owned by given account is preloaded.
-// func (p *Processor) preloadHomeTimeline(
-// 	ctx context.Context,
-// 	account *gtsmodel.Account,
-// ) error {
-
-// 	// Get (and so, create) home timeline cache for account ID.
-// 	timeline := p.state.Caches.Timelines.Home.MustGet(account.ID)
-
-// 	// Preload timeline with funcs.
-// 	n, err := timeline.Preload(ctx,
-
-// 		// Database load function.
-// 		func(page *paging.Page) ([]*gtsmodel.Status, error) {
-// 			return p.state.DB.GetHomeTimeline(ctx, account.ID, page)
-// 		},
-
-// 		// Status filtering function.
-// 		func(status *gtsmodel.Status) (bool, error) {
-// 			ok, err := p.visFilter.StatusHomeTimelineable(ctx, account, status)
-// 			return !ok, err
-// 		},
-// 	)
-// 	if err != nil {
-// 		return gtserror.Newf("error preloading home timeline %s: %w", account.ID, err)
-// 	}
-
-// 	log.Infof(ctx, "%s: preloaded %d", account.Username, n)
-// 	return nil
-// }

internal/processing/timeline/list.go

@@ -103,36 +103,3 @@ func (p *Processor) ListTimelineGet(
 		},
 	)
 }
-
-// preloadListTimeline will ensure that the timeline
-// cache for list owned by given account is preloaded.
-// func (p *Processor) preloadListTimeline(
-// 	ctx context.Context,
-// 	account *gtsmodel.Account,
-// 	list *gtsmodel.List,
-// ) error {
-
-// 	// Get (and so, create) list timeline cache for list ID.
-// 	timeline := p.state.Caches.Timelines.List.MustGet(list.ID)
-
-// 	// Preload timeline with funcs.
-// 	n, err := timeline.Preload(ctx,
-
-// 		// Database load function.
-// 		func(page *paging.Page) ([]*gtsmodel.Status, error) {
-// 			return p.state.DB.GetListTimeline(ctx, list.ID, page)
-// 		},
-
-// 		// Status filtering function.
-// 		func(status *gtsmodel.Status) (bool, error) {
-// 			ok, err := p.visFilter.StatusHomeTimelineable(ctx, account, status)
-// 			return !ok, err
-// 		},
-// 	)
-// 	if err != nil {
-// 		return gtserror.Newf("error preloading list timeline %s: %w", list.ID, err)
-// 	}
-
-// 	log.Infof(ctx, "%s[%q]: preloaded %d", account.Username, list.Title, n)
-// 	return nil
-// }