Initial Spotify support

src/Discord.Net.Core/Entities/Activities/Game.cs

@@ -1,14 +1,15 @@
-using System.Diagnostics;
+using System.Diagnostics;
 
 namespace Discord
 {
     [DebuggerDisplay(@"{DebuggerDisplay,nq}")]
     public class Game : IActivity
     {
+        internal Game() { }
+
         public string Name { get; internal set; }
         public ActivityType Type { get; internal set; }
 
-        internal Game() { }
         public Game(string name, ActivityType type = ActivityType.Playing)
         {
             Name = name;

src/Discord.Net.Core/Entities/Activities/RichGame.cs

@@ -1,4 +1,4 @@
-using System.Diagnostics;
+using System.Diagnostics;
 
 namespace Discord
 {
@@ -7,8 +7,8 @@ namespace Discord
     {
         internal RichGame() { }
 
-        public string Details { get; internal set;}
-        public string State { get; internal set;}
+        public string Details { get; internal set; }
+        public string State { get; internal set; }
         public ulong ApplicationId { get; internal set; }
         public GameAsset SmallAsset { get; internal set; }
         public GameAsset LargeAsset { get; internal set; }
@@ -19,4 +19,4 @@ namespace Discord
         public override string ToString() => Name;
         private string DebuggerDisplay => $"{Name} (Rich)";
     }
-}
+}

src/Discord.Net.Core/Entities/Activities/SpotifyGame.cs

@@ -0,0 +1,18 @@
+using System.Diagnostics;
+
+namespace Discord
+{
+    [DebuggerDisplay(@"{DebuggerDisplay,nq}")]
+    public class SpotifyGame : Game
+    {
+        internal SpotifyGame() { }
+
+        public string TrackTitle { get; internal set; }
+        public string TrackAlbum { get; internal set; }
+        public string SyncId { get; internal set; }
+        public string SessionId { get; internal set; }
+
+        public override string ToString() => Name;
+        private string DebuggerDisplay => $"{Name} (Spotify)";
+    }
+}

src/Discord.Net.Rest/API/Common/Game.cs

@@ -1,4 +1,4 @@
-#pragma warning disable CS1591
+#pragma warning disable CS1591
 using Newtonsoft.Json;
 using Newtonsoft.Json.Serialization;
 using System.Runtime.Serialization;
@@ -29,6 +29,10 @@ namespace Discord.API
         public Optional<API.GameTimestamps> Timestamps { get; set; }
         [JsonProperty("instance")]
         public Optional<bool> Instance { get; set; }
+        [JsonProperty("sync_id")]
+        public Optional<string> SyncId { get; set; }
+        [JsonProperty("session_id")]
+        public Optional<string> SessionId { get; set; }
 
         [OnError]
         internal void OnError(StreamingContext context, ErrorContext errorContext)

src/Discord.Net.WebSocket/DiscordSocketClient.cs

@@ -1294,7 +1294,7 @@ namespace Discord.WebSocket
                             case "PRESENCE_UPDATE":
                                 {
                                     await _gatewayLogger.DebugAsync("Received Dispatch (PRESENCE_UPDATE)").ConfigureAwait(false);
-
+                                    await _gatewayLogger.DebugAsync(payload.ToString());
                                     var data = (payload as JToken).ToObject<API.Presence>(_serializer);
 
                                     if (data.GuildId.IsSpecified)

src/Discord.Net.WebSocket/Extensions/EntityExtensions.cs

@@ -4,6 +4,14 @@ namespace Discord.WebSocket
     {
         public static IActivity ToEntity(this API.Game model)
         {
+            // Spotify Game
+            if (model.SyncId.IsSpecified)
+            {
+                return new SpotifyGame()
+                {
+                };
+            }
+
             // Rich Game
             if (model.ApplicationId.IsSpecified)
             {