refactor(storage): split `DeleteContentRemovedEntries` into 2 functions and fix condition

- Add `content IS NOT NULL` to avoid clearing the same entries over and over
- Create `DeleteRemovedEntriesEnclosures` and `ClearRemovedEntriesContent` that report individual counts

internal/cli/cleanup_tasks.go

@@ -47,10 +47,17 @@ func runCleanupTasks(store *storage.Storage) {
 		}
 	}
 
-	if rowsAffected, err := store.DeleteContentRemovedEntries(); err != nil {
-		slog.Error("Unable to delete the content of removed entries", slog.Any("error", err))
+	if enclosuresAffected, err := store.DeleteRemovedEntriesEnclosures(); err != nil {
+		slog.Error("Unable to delete enclosures from removed entries", slog.Any("error", err))
 	} else {
-		slog.Info("Deleting content of removed entries completed",
-			slog.Int64("removed_entries_content_removed", rowsAffected))
+		slog.Info("Deleting enclosures from removed entries completed",
+			slog.Int64("removed_entries_enclosures_deleted", enclosuresAffected))
+	}
+
+	if contentAffected, err := store.ClearRemovedEntriesContent(); err != nil {
+		slog.Error("Unable to clear content from removed entries", slog.Any("error", err))
+	} else {
+		slog.Info("Clearing content from removed entries completed",
+			slog.Int64("removed_entries_content_cleared", contentAffected))
 	}
 }

internal/storage/entry.go

@@ -258,8 +258,8 @@ func (s *Storage) GetReadTime(feedID int64, entryHash string) int {
 	return result
 }
 
-// deleteRemovedNonexistentEntries deletes from the database entries marked as "removed" and not visible anymore in the feed.
-func (s *Storage) deleteRemovedNonexistentEntries(feedID int64, entryHashes []string) error {
+// cleanupRemovedEntriesNotInFeed deletes from the database entries marked as "removed" and not visible anymore in the feed.
+func (s *Storage) cleanupRemovedEntriesNotInFeed(feedID int64, entryHashes []string) error {
 	query := `
 		DELETE FROM
 			entries
@@ -275,21 +275,30 @@ func (s *Storage) deleteRemovedNonexistentEntries(feedID int64, entryHashes []st
 	return nil
 }
 
-// deleteContentRemovedEntries deletes the content and corresponding enclosures
-// of entries marked as "removed", and only keeps their metadata.
-func (s *Storage) DeleteContentRemovedEntries() (int64, error) {
+// DeleteRemovedEntriesEnclosures deletes enclosures associated with entries marked as "removed".
+func (s *Storage) DeleteRemovedEntriesEnclosures() (int64, error) {
 	query := `
 		DELETE FROM
 			enclosures
 		WHERE
-		 	enclosures.entry_id IN
-				(SELECT id FROM entries WHERE status=$1)
+		 	enclosures.entry_id IN (SELECT id FROM entries WHERE status=$1)
 	`
-	if _, err := s.db.Exec(query, model.EntryStatusRemoved); err != nil {
+	result, err := s.db.Exec(query, model.EntryStatusRemoved)
+	if err != nil {
 		return 0, fmt.Errorf(`store: unable to delete enclosures from removed entries: %v`, err)
 	}
 
-	query = `
+	count, err := result.RowsAffected()
+	if err != nil {
+		return 0, fmt.Errorf(`store: unable to get the number of rows affected while deleting enclosures from removed entries: %v`, err)
+	}
+
+	return count, nil
+}
+
+// ClearRemovedEntriesContent clears the content fields of entries marked as "removed", keeping only their metadata.
+func (s *Storage) ClearRemovedEntriesContent() (int64, error) {
+	query := `
 		UPDATE
 			entries
 		SET
@@ -298,17 +307,17 @@ func (s *Storage) DeleteContentRemovedEntries() (int64, error) {
 			url='',
 			author=NULL
 		WHERE
-			status=$1
+			status=$1 AND content IS NOT NULL
 	`
 
 	result, err := s.db.Exec(query, model.EntryStatusRemoved)
 	if err != nil {
-		return 0, fmt.Errorf(`store: unable to delete removed entries: %v`, err)
+		return 0, fmt.Errorf(`store: unable to clear content from removed entries: %v`, err)
 	}
 
 	count, err := result.RowsAffected()
 	if err != nil {
-		return 0, fmt.Errorf(`store: unable to get the number of rows affected while deleting content from removed entries: %v`, err)
+		return 0, fmt.Errorf(`store: unable to get the number of rows affected while clearing content from removed entries: %v`, err)
 	}
 
 	return count, nil
@@ -361,8 +370,8 @@ func (s *Storage) RefreshFeedEntries(userID, feedID int64, entries model.Entries
 	}
 
 	go func() {
-		if err := s.deleteRemovedNonexistentEntries(feedID, entryHashes); err != nil {
-			slog.Error("Unable to cleanup entries",
+		if err := s.cleanupRemovedEntriesNotInFeed(feedID, entryHashes); err != nil {
+			slog.Error("Unable to cleanup removed entries",
 				slog.Int64("user_id", userID),
 				slog.Int64("feed_id", feedID),
 				slog.Any("error", err),