#93: Starting work to implement flac support

Constants/FileExtensions.cs

@@ -11,6 +11,9 @@ public class FileExtensions
     // Contains file extension with period at the beginning
     public static string JPG_EXTENSION = ".jpg";
 
+    // Contains file extension with period at the beginning
+    public static string FLAC_EXTENSION = ".flac";
+
     // Contains file extension with period at the beginning
     public static string ZIP_EXTENSION = ".zip";
 }

Controllers/Managers/SongManager.cs

@@ -207,6 +207,7 @@ public class SongManager : BaseManager
         }
     }
 
+    // Change the name of this method to only focus on wav files
     public void SaveSongToFileSystem(IFormFile songFile, IFormFile coverArtData, Song song)
     {
         song.SongDirectory = _tempDirectoryRoot;

Controllers/Utilities/MetadataRetriever.cs

@@ -9,6 +9,8 @@ public class MetadataRetriever
 {
     #region Fields
     private static NLog.Logger _logger = NLog.Web.NLogBuilder.ConfigureNLog("nlog.config").GetCurrentClassLogger();
+    private List<string> _supportedAudioFileTypes = new List<string> {"wav", "flac"};
+    private List<string> _supportedImageFileTypes = new List<string> {"jpeg", "jpg", "png"};
     private Song _updatedSong;
     private string _message;
     private string _title;
@@ -106,6 +108,22 @@ public class MetadataRetriever
         }
     }
 
+    public bool IsSupportedFile(IFormFile file)
+    {
+        var supportedTypes = this._supportedAudioFileTypes;
+        this._supportedImageFileTypes.ForEach(t => 
+        {
+            if (!supportedTypes.Contains(t))
+            {
+                supportedTypes.Add(t);
+            }
+        });
+
+        var extensionType = this.FileExtensionType(file).ToLower();
+
+        return supportedTypes.Contains(extensionType);
+    }
+
     public Song RetrieveMetaData(string filePath)
     {
         Song song = new Song();

Controllers/v1/SongDataController.cs

@@ -103,6 +103,20 @@ public class SongDataController : BaseController
         {
             if (up.SongData.Length > 0 && up.CoverArtData.Length > 0 && !string.IsNullOrEmpty(up.SongFile))
             {
+                var meta = new Utilities.MetadataRetriever();
+                if (!meta.IsSupportedFile(up.SongData) && !meta.IsSupportedFile(up.CoverArtData))
+                {
+                    return BadRequest("Media is not supported");
+                }
+                else if (!meta.IsSupportedFile(up.SongData))
+                {
+                    return BadRequest("Song is not supported");
+                }
+                else if (!meta.IsSupportedFile(up.CoverArtData))
+                {
+                    return BadRequest("Cover art is not supported");
+                }
+
                 var song = Newtonsoft.Json.JsonConvert.DeserializeObject<Song>(up.SongFile);
                 var tokMgr = new TokenManager(this._config);
                 var accessToken = Request.Headers["Authorization"];
@@ -115,6 +129,9 @@ public class SongDataController : BaseController
 
                 _logger.LogInformation($"Song title: {song.Title}");
 
+
+                // TODO: Identify the song file type. Then save the media.
+                // Create a new method to save song flac files
                 _songMgr.SaveSongToFileSystem(up.SongData, up.CoverArtData, song);
             }
         }