pub async fn import_all_torrents_statistics(&self) -> Result<(), database::Error> {
        info!("Importing torrents statistics from tracker ...");
        let torrents = self.database.get_all_torrents_compact().await?;

        for torrent in torrents {
            info!("Updating torrent {} ...", torrent.torrent_id);

            let ret = self.import_torrent_statistics(torrent.torrent_id, &torrent.info_hash).await;

            // code-review: should we treat differently for each case?. The
            // tracker API could be temporarily offline, or there could be a
            // tracker misconfiguration.
            //
            // This is the log when the torrent is not found in the tracker:
            //
            // ```
            // 2023-05-09T13:31:24.497465723+00:00 [torrust_index::tracker::statistics_importer][ERROR] Error updating torrent tracker stats for torrent with id 140: TorrentNotFound
            // ```

            if let Some(err) = ret.err() {
                let message = format!(
                    "Error updating torrent tracker stats for torrent with id {}: {:?}",
                    torrent.torrent_id, err
                );
                error!("{}", message);
            }
        }

        Ok(())
    }