Almost done with updating metadata of song, just need to handle records that have no related records associated with them

include/manager/CoverArtManager.h

@@ -2,6 +2,7 @@
 #define COVERARTMANAGER_H_
 
 #include <string>
+#include <utility>
 
 #include "model/Models.h"
 
@@ -13,9 +14,14 @@ namespace manager
         CoverArtManager(const std::string&);
         CoverArtManager(const model::BinaryPath& bConf);
 
-        model::Cover saveCover(const model::Song&, std::string&, const std::string&);
+        model::Cover saveCover(const model::Song&, std::string&, 
+            const std::string&);
+
+        std::pair<bool, std::string> defaultCover(const model::Cover&);
         
         void deleteCover(const model::Song&);
+        void updateCover(const model::Song&);
+        void updateCoverRecord(const model::Song&);
     private:
         model::BinaryPath m_bConf;
         std::string path;