Update Track fields and file tag handling

Change Track members: artwork -> std::string, genre -> TagLib::String, and add year
File::readFileTag now takes a Track& and fills artist/title/album/trackNr/year/genre/format/length
importFolder sets artwork to <folder>/cover.png
Rename Database::addSong to addTrack

include/Containers.h

@@ -29,9 +29,10 @@ struct Track {
     TagLib::String album;
     unsigned int trackNr;
     unsigned int length;
+    unsigned int year;
     std::string filePath;
-    std::string_view artwork;
-    std::string_view genre;
+    std::string artwork;
+    TagLib::String genre;
     std::string format;
 };
 

include/Database.h

@@ -13,7 +13,7 @@ class Database {
         void fetch( const std::string& query ) const;
         void fetchAlbum( const std::string& album ) const;
         void fetchAll() const;
-        void addSong( );
+        void addTrack();
     private:
         sqlite3* db_;
         sqlite3_stmt* stmnt;

include/File.h

@@ -12,7 +12,7 @@ class File {
     public:
         void importFile( std::string fileName );
         void importFolder( const std::string& folderPath, std::vector<Track>& tracks );
-        void readFileTag( const char* fileName );
+        void readFileTag( Track& t );
         std::string parseFiletype( const std::string& path );
 
     private: