Added Subscriptions page and updated subscriptions management

FoxTube.Core/Extensions.cs

@@ -1,10 +1,12 @@
 using FoxTube.Utils;
+using Google.Apis.YouTube.v3.Data;
 using SQLitePCL;
 using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Threading;
+using System.Threading.Tasks;
 using System.Xml;
 using Windows.Devices.PointOfService;
 using Windows.UI;
@@ -47,7 +49,7 @@ namespace FoxTube
 		public static string ToHex(this Color color) =>
 			$"#{color.R:X}{color.G:X}{color.B:X}";
 
-		public static Color FromHex(this Color parent, string hex)
+		public static Color FromHex(string hex)
 		{
 			hex = hex.Replace("#", "");
 			List<byte> values = new List<byte>();
@@ -126,5 +128,14 @@ namespace FoxTube
 			else
 				return Math.Round(span.TotalDays / 365) + " " + "years ago";
 		}
+
+		public static async Task<Channel> GetChannel(string channelId, string part)
+		{
+			var request = UserManagement.Service.Channels.List(part);
+			request.Id = channelId;
+			request.MaxResults = 1;
+
+			return (await request.ExecuteAsync()).Items.FirstOrDefault();
+		}
 	}
 }