Refactor containers and library loading

Replace trackPtr with raw Track* pointers in HashTable, add loadLibrary
to PlayerLocal, remove unused File helpers, and fix broken artwork/artist
SQL bindings.

include/Containers.h

@@ -53,8 +53,8 @@ class HashTable {
     HashTable ( HashTable && ) noexcept = default;
     HashTable &operator= ( HashTable && ) noexcept = default;
 
-    void ht_insert ( const std::string &key, trackPtr track );
-    trackPtr ht_lookup ( const std::string &key ) const;
+    void ht_insert ( const std::string &key, Track* t );
+    Track* ht_lookup ( const std::string &key ) const;
     bool ht_delete ( const std::string &key );
 
     std::vector<std::string> listAll () const;
@@ -72,7 +72,7 @@ class HashTable {
     struct Entry {
         std::string key;
         uint64_t hash = 0;
-        trackPtr track;
+        Track* track;
     };
 
     // helpers

include/File.h

@@ -12,11 +12,9 @@ class File {
     public:
         Track importFile( const std::string& filePath );
         void scanFolder( const std::string& folderPath, std::vector<Track>& tracks );
+        void updateLibrary();
         void readFileTag( Track& t );
         TagLib::VariantMap importArtwork( Track& t );
-        std::string parseFiletype( const std::string& path );
-        void updateLibrary();
-        uint64_t hashString( Track t );
 
     private:
         std::string path_;

include/PlayerLocal.h

@@ -9,6 +9,7 @@ class PlayerLocal : public Player {
   public:
     // Library Controls
     void loadFile ( Track track ) override;
+    void loadLibrary();
     void scanLibrary() override;
     void updateLibrary() override;
     void editMetadata() override;
@@ -30,4 +31,8 @@ class PlayerLocal : public Player {
       unsigned int currentTrack_;
       db db_;
       std::string musicFolder_ = "data/";
+
+      ht tracks_;
+      ht artists_;
+      ht albums_;
 };