added favorites

Signed-off-by: Matt Bruce <mbrucedogs@gmail.com>

FirebaseKaraoke/FirebaseController.cs

@@ -34,6 +34,10 @@ namespace KaraokePlayer.Classes
         {
             get { return string.Format("controllers/{0}/player/queue/0/", this.Id); }
         }
+        private string FavoritesPath
+        {
+            get { return string.Format("controllers/{0}/favorites/", this.Id); }
+        }
 
         public string Id { get; set; }
         public Song CurrentSong { get; set; }
@@ -92,13 +96,14 @@ namespace KaraokePlayer.Classes
 
         private void CurrentSongDidChange()
         {
-             var response = _client.Get(CurrentSongPath);
+            var response = _client.Get(CurrentSongPath);
             var item = response.ResultAs<QueueItem>();
             if (item == null) return;
             if (CurrentSong == null || CurrentSong.Path != item.Song.Path)
             {
                 CurrentSong = item.Song;
                 _songChanged(new ControllerSongChangedEventArgs(item.Song));
+                UpdateFavorites(item.Song);
             }
         }
 
@@ -108,5 +113,35 @@ namespace KaraokePlayer.Classes
             _state = newstate;
             _stateChanged(new ControllerStateChangedEventArgs(newstate));
         }
+
+        private void UpdateFavorites(Song song)
+        {
+            //get favorites
+            FavoriteSong favorite = null;
+            List<FavoriteSong> favorites = _client.Get(FavoritesPath).ResultAs<List<FavoriteSong>>();
+            if (favorites == null) favorites = new List<FavoriteSong>();
+
+            //unique song is based on the path
+            favorite = favorites.SingleOrDefault(f => f.Path == song.Path);
+            if (favorite == null)
+            {
+                favorite = new FavoriteSong();
+                favorite.Artist = song.Artist;
+                favorite.Title = song.Title;
+                favorite.Genre = song.Genre;
+                favorite.Path = song.Path;
+                favorite.Year = song.Year;
+                favorite.Count = 1;
+                favorites.Add(favorite);
+            }
+            else {
+                favorite.Count += 1;
+            }
+
+            //take the top 100 songs                
+            var top100 = favorites.OrderByDescending(f => f.Count).Take(100);
+            _client.Set(FavoritesPath, top100);
+
+        }
     }
 }

Herse.Models/FavoriteSong.cs

@@ -0,0 +1,15 @@
+using Newtonsoft.Json;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Herse.Models
+{
+    public class FavoriteSong : Song
+    {
+        [JsonProperty("count")]
+        public int Count { get; set; }
+    }
+}

Herse.Models/Herse.Models.csproj

@@ -44,6 +44,7 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="FavoriteSong.cs" />
     <Compile Include="FileType.cs" />
     <Compile Include="PlayerState.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />