initial functional file indexer, added Qt / C++ port of Cartographer

desktop/datalake/cartographer.hpp

@@ -0,0 +1,30 @@
+#pragma once
+
+#include <QHash>
+#include <QString>
+#include <QUuid>
+#include <optional>
+
+#include "structs.hpp"
+
+class Cartographer {
+  public:
+    Cartographer();
+    static Cartographer& instance();
+    static Cartographer* create() { return &instance(); }
+
+    void                      addAlbum(KotoAlbum* album);
+    void                      addArtist(KotoArtist* artist);
+    void                      addTrack(KotoTrack* track);
+    std::optional<KotoAlbum*> getAlbum(QUuid uuid);
+    //.std::optional<KotoAlbum*>  getAlbum(QString name);
+    std::optional<KotoArtist*> getArtist(QUuid uuid);
+    std::optional<KotoArtist*> getArtist(QString name);
+    std::optional<KotoTrack*>  getTrack(QUuid uuid);
+
+  private:
+    QHash<QUuid, KotoAlbum*>    i_albums;
+    QHash<QUuid, KotoArtist*>   i_artists;
+    QHash<QString, KotoArtist*> i_artists_by_name;
+    QHash<QUuid, KotoTrack*>    i_tracks;
+};