Partially implemented updating song metadata. Need to make it more dynamic, meaning only update attributes that have values sent with the request. #36

Controllers/SongController.cs

@@ -9,6 +9,7 @@ using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Configuration;
 
 using Icarus.Controllers.Managers;
+using Icarus.Controllers.Utilities;
 using Icarus.Models;
 using Icarus.Models.Context;
 
@@ -73,6 +74,17 @@ namespace Icarus.Controllers
 		public IActionResult Put(int id, [FromBody] Song song)
         	{
 			// TODO: Implement updating of song metadata
+			MusicStoreContext context = HttpContext.RequestServices
+				.GetService(typeof(MusicStoreContext)) as MusicStoreContext;
+			Console.WriteLine("Retrieving filepath of song");
+			var songPath = context.GetSong(id).SongPath;
+			song.SongPath = songPath;
+
+			MetadataRetriever updateMetadata = new MetadataRetriever();
+			updateMetadata.UpdateMetadata(song);
+
+			context.UpdateSong(song);
+
 			SongResult songResult = new SongResult();
 
 			return Ok(songResult);

Controllers/Utilities/MetadataRetriever.cs

@@ -58,6 +58,25 @@ namespace Icarus.Controllers.Utilities
 			return song;
 		}
 
+		public void UpdateMetadata(Song song)
+		{
+			try
+			{
+				Console.WriteLine("Updating song metadata"); 
+				var filePath = song.SongPath;
+				TagLib.File fileTag = TagLib.File.Create(filePath);
+				fileTag.Tag.Title = song.Title;
+				fileTag.Tag.Genres = new []{song.Genre};
+				fileTag.Save();
+				Console.WriteLine("Song metadata updated");
+
+			}
+			catch (Exception ex)
+			{
+				var msg = ex.Message;
+			}
+		}
+
 		private void PrintMetadata()
 		{
 			Console.WriteLine("\n\nMetadata of the song:");

Models/Context/MusicStoreContext.cs

@@ -47,6 +47,39 @@ namespace Icarus.Models.Context
 				Console.WriteLine($"An error occurred:\n{exMsg}");
 	    		}
 		}
+		public void UpdateSong(Song song)
+		{
+			try
+			{
+				using (MySqlConnection conn = GetConnection())
+				{
+					conn.Open();
+
+		    			string query = "UPDATE Songs SET Title=@Title, Album=@Album, " +
+						"Artist=@Artist, Year=@Year, Genre=@Genre, " +
+				   		"Duration=@Duration, Filename=@Filename, SongPath=@SongPath";
+					using (MySqlCommand cmd = new MySqlCommand(query, conn))
+					{
+		        			cmd.Parameters.AddWithValue("@Title", song.Title);
+						cmd.Parameters.AddWithValue("@Album", song.Album);
+						cmd.Parameters.AddWithValue("@Artist", song.Artist);
+						cmd.Parameters.AddWithValue("@Year", song.Year);
+						cmd.Parameters.AddWithValue("@Genre", song.Genre);
+						cmd.Parameters.AddWithValue("@Duration", song.Duration);
+						cmd.Parameters.AddWithValue("@Filename", song.Filename);
+						cmd.Parameters.AddWithValue("@SongPath", song.SongPath);
+
+						cmd.ExecuteNonQuery();
+					}
+				}
+			}
+			catch (Exception ex)
+			{
+				var msg = ex.Message;
+				Console.WriteLine("An error occurred in MusicStoreContext:");
+				Console.WriteLine(msg);
+			}
+		}
 		public void DeleteSong(int id)
 		{
 	    	try