From 5b19cdaa46a6a263172c30f01eb21a0d29cdc8e6 Mon Sep 17 00:00:00 2001
From: kdeng00 <kundeng94@gmail.com>
Date: Sat, 10 Aug 2019 01:03:52 -0400
Subject: [PATCH] Working on #56

---
 Controllers/Utilities/MetadataRetriever.cs |  5 ++++-
 Libs/src/metadata_retriever.cpp            | 24 ++++++++++++++++++++++
 2 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/Controllers/Utilities/MetadataRetriever.cs b/Controllers/Utilities/MetadataRetriever.cs
index 0a0aa5d..f4fb81f 100644
--- a/Controllers/Utilities/MetadataRetriever.cs
+++ b/Controllers/Utilities/MetadataRetriever.cs
@@ -7,6 +7,7 @@ using NLog;
 using TagLib;
 
 using Icarus.Models;
+using Icarus.Controllers.Managers;
 
 namespace Icarus.Controllers.Utilities
 {
@@ -63,7 +64,9 @@ namespace Icarus.Controllers.Utilities
 
         #region C++ Libs
         [DllImport("libicarus.so")]
-        public static extern void retrieve_metadata(ref Icarus.Controllers.Managers.SongManager.Sng sng, string file_path);
+        public static extern void retrieve_metadata(ref SongManager.Sng sng, string file_path);
+        [DllImport("libicarus.so")]
+        public static extern void update_metadata(ref SongManager.Sng sng_updated, ref SongManager.Sng sng_old);
         #endregion
 
         public byte[] RetrieveCoverArtBytes(Song song)
diff --git a/Libs/src/metadata_retriever.cpp b/Libs/src/metadata_retriever.cpp
index ca458cd..679ef0b 100644
--- a/Libs/src/metadata_retriever.cpp
+++ b/Libs/src/metadata_retriever.cpp
@@ -10,6 +10,7 @@ extern "C"
 {
 
 void retrieve_metadata(Song*, char*);
+void update_metadata(Song*, Song*);
 
 void retrieve_metadata(Song *sng, char* song_path)
 {
@@ -24,5 +25,28 @@ void retrieve_metadata(Song *sng, char* song_path)
     sng->Duration = file.audioProperties()->lengthInSeconds();
     strcpy(sng->SongPath, song_path);
 }
+void update_metadata(Song *sng_updated, Song *sng_old)
+{
+    std::cout<<"updating metadata"<<std::endl;
+    TagLib::FileRef file(sng_old->SongPath);
+    
+    if (strlen(sng_updated->Title) > 0) {
+        file.tag()->setTitle(sng_updated->Title);
+    }
+    if (strlen(sng_updated->Artist) > 0) {
+        file.tag()->setArtist(sng_updated->Artist);
+    }
+    if (strlen(sng_updated->Album) > 0) {
+        file.tag()->setAlbum(sng_updated->Album);
+    }
+    if (strlen(sng_updated->Genre) > 0) {
+        file.tag()->setGenre(sng_updated->Genre);
+    }
+    if (sng_updated->Year > 0) {
+        file.tag()->setYear(sng_updated->Year);
+    }
+
+    file.save();
+}
 
 }