add channels infrastructure

MediaBrowser.Controller/Channels/ChannelVideoItem.cs

@@ -1,4 +1,8 @@
 using MediaBrowser.Controller.Entities;
+using MediaBrowser.Model.Configuration;
+using MediaBrowser.Model.Entities;
+using System.Globalization;
+using System.Linq;
 
 namespace MediaBrowser.Controller.Channels
 {
@@ -13,5 +17,41 @@ namespace MediaBrowser.Controller.Channels
         public ChannelMediaContentType ContentType { get; set; }
 
         public string OriginalImageUrl { get; set; }
+
+        public override string GetUserDataKey()
+        {
+            if (ContentType == ChannelMediaContentType.Trailer)
+            {
+                var key = this.GetProviderId(MetadataProviders.Tmdb) ?? this.GetProviderId(MetadataProviders.Tvdb) ?? this.GetProviderId(MetadataProviders.Imdb) ?? this.GetProviderId(MetadataProviders.Tvcom);
+
+                if (!string.IsNullOrWhiteSpace(key))
+                {
+                    key = key + "-trailer";
+
+                    // Make sure different trailers have their own data.
+                    if (RunTimeTicks.HasValue)
+                    {
+                        key += "-" + RunTimeTicks.Value.ToString(CultureInfo.InvariantCulture);
+                    }
+
+                    return key;
+                }
+            }
+
+            return base.GetUserDataKey();
+        }
+
+        protected override bool GetBlockUnratedValue(UserConfiguration config)
+        {
+            return config.BlockUnratedItems.Contains(UnratedItem.ChannelContent);
+        }
+
+        public override bool SupportsLocalMetadata
+        {
+            get
+            {
+                return false;
+            }
+        }
     }
 }