[UI] Added some stats on the track view

src/database/Track.cpp

@@ -113,6 +113,20 @@ Track::getUIQuery(Wt::Dbo::Session& session, SearchFilter filter)
 	return query;
 }
 
+Track::StatsQueryResult
+Track::getStats(Wt::Dbo::Session& session, SearchFilter filter)
+{
+	SqlQuery sqlQuery = generatePartialQuery(filter);
+
+	Wt::Dbo::Query<StatsQueryResult> query = session.query<StatsQueryResult>( "SELECT COUNT(DISTINCT t.id), SUM(t.duration) FROM track t INNER JOIN artist a ON t.artist_id = a.id INNER JOIN genre g ON g.id = t_g.genre_id INNER JOIN track_genre t_g ON t_g.track_id = t.id INNER JOIN release r ON r.id = t.release_id " + sqlQuery.where().get());
+
+	for (const std::string& bindArg : sqlQuery.where().getBindArgs())
+		query.bind(bindArg);
+
+	return query;
+}
+
+
 std::vector<Track::pointer>
 Track::getByFilter(Wt::Dbo::Session& session, SearchFilter filter, int offset, int size)
 {