Added initial implementation of the metadata provider network, along with the first few providers

MediaBrowser.Controller/Providers/ImageFromMediaLocationProvider.cs

@@ -0,0 +1,85 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.Composition;
+using System.IO;
+using System.Linq;
+using System.Threading.Tasks;
+using MediaBrowser.Controller.Events;
+using MediaBrowser.Model.Entities;
+
+namespace MediaBrowser.Controller.Providers
+{
+    [Export(typeof(BaseMetadataProvider))]
+    public class ImageFromMediaLocationProvider : BaseMetadataProvider
+    {
+        public override Task Fetch(BaseItem item, ItemResolveEventArgs args)
+        {
+            return Task.Run(() =>
+            {
+                if (args.IsFolder)
+                {
+                    PopulateImages(item, args);
+                }
+            });
+        }
+
+        /// <summary>
+        /// Fills in image paths based on files win the folder
+        /// </summary>
+        private void PopulateImages(BaseItem item, ItemResolveEventArgs args)
+        {
+            List<string> backdropFiles = new List<string>();
+
+            foreach (KeyValuePair<string, FileAttributes> file in args.FileSystemChildren)
+            {
+                if (file.Value.HasFlag(FileAttributes.Directory))
+                {
+                    continue;
+                }
+
+                string filePath = file.Key;
+
+                string ext = Path.GetExtension(filePath);
+
+                // Only support png and jpg files
+                if (!ext.EndsWith("png", StringComparison.OrdinalIgnoreCase) && !ext.EndsWith("jpg", StringComparison.OrdinalIgnoreCase))
+                {
+                    continue;
+                }
+
+                string name = Path.GetFileNameWithoutExtension(filePath);
+
+                if (name.Equals("folder", StringComparison.OrdinalIgnoreCase))
+                {
+                    item.PrimaryImagePath = filePath;
+                }
+                else if (name.StartsWith("backdrop", StringComparison.OrdinalIgnoreCase))
+                {
+                    backdropFiles.Add(filePath);
+                }
+                if (name.Equals("logo", StringComparison.OrdinalIgnoreCase))
+                {
+                    item.LogoImagePath = filePath;
+                }
+                if (name.Equals("banner", StringComparison.OrdinalIgnoreCase))
+                {
+                    item.BannerImagePath = filePath;
+                }
+                if (name.Equals("art", StringComparison.OrdinalIgnoreCase))
+                {
+                    item.ArtImagePath = filePath;
+                }
+                if (name.Equals("thumb", StringComparison.OrdinalIgnoreCase))
+                {
+                    item.ThumbnailImagePath = filePath;
+                }
+            }
+
+            if (backdropFiles.Any())
+            {
+                item.BackdropImagePaths = backdropFiles;
+            }
+        }
+
+    }
+}