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

desktop/datalake/cartographer.cpp

@@ -0,0 +1,45 @@
+#include "cartographer.hpp"
+
+Cartographer::Cartographer()
+    : i_albums(QHash<QUuid, KotoAlbum*>()),
+      i_artists(QHash<QUuid, KotoArtist*>()),
+      i_artists_by_name(QHash<QString, KotoArtist*>()),
+      i_tracks(QHash<QUuid, KotoTrack*>()) {}
+
+Cartographer& Cartographer::instance() {
+  static Cartographer _instance;
+  return _instance;
+}
+
+void Cartographer::addAlbum(KotoAlbum* album) {
+  this->i_albums.insert(album->uuid, album);
+}
+
+void Cartographer::addArtist(KotoArtist* artist) {
+  this->i_artists.insert(artist->uuid, artist);
+  this->i_artists_by_name.insert(artist->getName(), artist);
+}
+
+void Cartographer::addTrack(KotoTrack* track) {
+  this->i_tracks.insert(track->uuid, track);
+}
+
+std::optional<KotoAlbum*> Cartographer::getAlbum(QUuid uuid) {
+  auto album = this->i_albums.value(uuid, nullptr);
+  return album ? std::optional {album} : std::nullopt;
+}
+
+std::optional<KotoArtist*> Cartographer::getArtist(QUuid uuid) {
+  auto artist = this->i_artists.value(uuid, nullptr);
+  return artist ? std::optional {artist} : std::nullopt;
+}
+
+std::optional<KotoArtist*> Cartographer::getArtist(QString name) {
+  auto artist = this->i_artists_by_name.value(name, nullptr);
+  return artist ? std::optional {artist} : std::nullopt;
+}
+
+std::optional<KotoTrack*> Cartographer::getTrack(QUuid uuid) {
+  auto track = this->i_tracks.value(uuid, nullptr);
+  return track ? std::optional {track} : std::nullopt;
+}