Initial metadata provider hook in. No refresh intelligence yet.

MediaBrowser.Controller/Entities/BaseEntity.cs

@@ -1,4 +1,8 @@
 using System;
+using System.Collections.Generic;
+using System.Linq;
+using MediaBrowser.Controller.Library;
+using MediaBrowser.Controller.IO;
 
 namespace MediaBrowser.Controller.Entities
 {
@@ -11,6 +15,10 @@ namespace MediaBrowser.Controller.Entities
 
         public Guid Id { get; set; }
 
+        public string Path { get; set; }
+
+        public Folder Parent { get; set; }
+
         public string PrimaryImagePath { get; set; }
 
         public DateTime DateCreated { get; set; }
@@ -21,5 +29,45 @@ namespace MediaBrowser.Controller.Entities
         {
             return Name;
         }
+
+        protected ItemResolveEventArgs _resolveArgs;
+        /// <summary>
+        /// We attach these to the item so that we only ever have to hit the file system once
+        /// (this includes the children of the containing folder)
+        /// Use ResolveArgs.FileSystemChildren to check for the existence of files instead of File.Exists
+        /// </summary>
+        public ItemResolveEventArgs ResolveArgs
+        {
+            get
+            {
+                if (_resolveArgs == null)
+                {
+                    _resolveArgs = new ItemResolveEventArgs()
+                    {
+                        FileInfo = FileData.GetFileData(this.Path),
+                        Parent = this.Parent,
+                        Cancel = false,
+                        Path = this.Path
+                    };
+                    _resolveArgs = FileSystemHelper.FilterChildFileSystemEntries(_resolveArgs, (this.Parent != null && this.Parent.IsRoot));
+                }
+                return _resolveArgs;
+            }
+            set
+            {
+                _resolveArgs = value;
+            }
+        }
+
+        /// <summary>
+        /// Refresh metadata on us by execution our provider chain
+        /// </summary>
+        /// <returns>true if a provider reports we changed</returns>
+        public bool RefreshMetadata()
+        {
+            Kernel.Instance.ExecuteMetadataProviders(this).ConfigureAwait(false);
+            return true;
+        }
+
     }
 }