Adding Endpoint to get a User's Queue (#807)

* Adding support to Get a player queue

* Update to return Tracks and Episodes

Author: gavinsteinhoff

SpotifyAPI.Web/Clients/Interfaces/IPlayerClient.cs

@@ -204,5 +204,14 @@ public interface IPlayerClient
     /// </remarks>
     /// <returns></returns>
     Task<bool> AddToQueue(PlayerAddToQueueRequest request);
+
+    /// <summary>
+    /// Get the list of objects that make up the user's queue.
+    /// </summary>
+    /// <remarks>
+    /// https://developer.spotify.com/documentation/web-api/reference/#/operations/get-queue
+    /// </remarks>
+    /// <returns></returns>
+    Task<QueueResponse> GetQueue();
   }
 }

SpotifyAPI.Web/Clients/PlayerClient.cs

@@ -17,6 +17,11 @@ public async Task<bool> AddToQueue(PlayerAddToQueueRequest request)
       return statusCode == HttpStatusCode.NoContent;
     }
 
+    public Task<QueueResponse> GetQueue()
+    {
+      return API.Get<QueueResponse>(URLs.PlayerQueue());
+    }
+
     public Task<DeviceResponse> GetAvailableDevices()
     {
       return API.Get<DeviceResponse>(URLs.PlayerDevices());

SpotifyAPI.Web/Models/Response/QueueResponse.cs

@@ -0,0 +1,14 @@
+using System.Collections.Generic;
+using Newtonsoft.Json;
+
+namespace SpotifyAPI.Web
+{
+  public class QueueResponse
+  {
+    [JsonConverter(typeof(PlayableItemConverter))]
+    public IPlayableItem CurrentlyPlaying { get; set; } = default!;
+    [JsonProperty(ItemConverterType = typeof(PlayableItemConverter))]
+    public List<IPlayableItem> Queue { get; set; } = default!;
+  }
+}
+