1 files changed, 10 insertions, 322 deletions
diff --git a/MediaBrowser.Server.Implementations/Photos/PhotoAlbumImageProvider.cs b/MediaBrowser.Server.Implementations/Photos/PhotoAlbumImageProvider.cs
index 30e57106c6..7c10f2767a 100644
--- a/MediaBrowser.Server.Implementations/Photos/PhotoAlbumImageProvider.cs
+++ b/MediaBrowser.Server.Implementations/Photos/PhotoAlbumImageProvider.cs
@@ -1,337 +1,25 @@
-using System;
+using MediaBrowser.Common.IO;
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Providers;
 using System.Collections.Generic;
-using System.Drawing;
-using System.Drawing.Drawing2D;
-using System.Drawing.Imaging;
-using System.IO;
 using System.Linq;
-using System.Threading;
 using System.Threading.Tasks;
-using MediaBrowser.Common.Extensions;
-using MediaBrowser.Common.IO;
-using MediaBrowser.Controller.Entities;
-using MediaBrowser.Controller.Entities.Audio;
-using MediaBrowser.Controller.Entities.TV;
-using MediaBrowser.Controller.Library;
-using MediaBrowser.Controller.Playlists;
-using MediaBrowser.Controller.Providers;
-using MediaBrowser.Model.Entities;
-using MoreLinq;
 
 namespace MediaBrowser.Server.Implementations.Photos
 {
-    public class PhotoAlbumImageProvider : ICustomMetadataProvider<PhotoAlbum>, IHasChangeMonitor
+    public class PhotoAlbumImageProvider : BaseDynamicImageProvider<PhotoAlbum>, ICustomMetadataProvider<PhotoAlbum>
     {
-        private readonly IFileSystem _fileSystem;
-        private readonly IProviderManager _provider;
-
-        public PhotoAlbumImageProvider(IFileSystem fileSystem, IProviderManager provider)
-        {
-            _fileSystem = fileSystem;
-            _provider = provider;
-        }
-
-        public async Task<ItemUpdateType> FetchAsync(PhotoAlbum item, MetadataRefreshOptions options, CancellationToken cancellationToken)
-        {
-            var primaryResult = await FetchAsync(item, ImageType.Primary, options, cancellationToken).ConfigureAwait(false);
-            var thumbResult = await FetchAsync(item, ImageType.Thumb, options, cancellationToken).ConfigureAwait(false);
-
-            return primaryResult | thumbResult;
-        }
-
-        private Task<ItemUpdateType> FetchAsync(IHasImages item, ImageType imageType, MetadataRefreshOptions options, CancellationToken cancellationToken)
-        {
-            var items = GetItemsWithImages(item);
-            var cacheKey = GetConfigurationCacheKey(items);
-
-            if (!HasChanged(item, imageType, cacheKey))
-            {
-                return Task.FromResult(ItemUpdateType.None);
-            }
-
-            return FetchAsyncInternal(item, imageType, cacheKey, options, cancellationToken);
-        }
-
-        private async Task<ItemUpdateType> FetchAsyncInternal(IHasImages item, ImageType imageType, string cacheKey, MetadataRefreshOptions options, CancellationToken cancellationToken)
-        {
-            var img = await CreateImageAsync(item, imageType, 0).ConfigureAwait(false);
-
-            if (img == null)
-            {
-                return ItemUpdateType.None;
-            }
-
-            using (var ms = new MemoryStream())
-            {
-                img.Save(ms, ImageFormat.Png);
-
-                ms.Position = 0;
-
-                await _provider.SaveImage(item, ms, "image/png", imageType, null, cacheKey, cancellationToken).ConfigureAwait(false);
-            }
-
-            return ItemUpdateType.ImageUpdate;
-        }
-
-        private bool HasChanged(IHasImages item, ImageType type, string cacheKey)
-        {
-            var image = item.GetImageInfo(type, 0);
-
-            if (image != null)
-            {
-                if (!_fileSystem.ContainsSubPath(item.GetInternalMetadataPath(), image.Path))
-                {
-                    return false;
-                }
-
-                var currentPathCacheKey = (Path.GetFileNameWithoutExtension(image.Path) ?? string.Empty).Split('_').LastOrDefault();
-
-                if (string.Equals(cacheKey, currentPathCacheKey, StringComparison.OrdinalIgnoreCase))
-                {
-                    return false;
-                }
-            }
-
-            return true;
-        }
-
-        private const string Version = "3";
-
-        public string GetConfigurationCacheKey(List<BaseItem> items)
-        {
-            return (Version + "_" + string.Join(",", items.Select(i => i.Id.ToString("N")).ToArray())).GetMD5().ToString("N");
-        }
-
-        private List<BaseItem> GetItemsWithImages(IHasImages item)
-        {
-            var photoAlbum = item as PhotoAlbum;
-            if (photoAlbum != null)
-            {
-                return GetFinalItems(photoAlbum.RecursiveChildren.Where(i => i is Photo).ToList());
-            }
-
-            var playlist = (Playlist)item;
-
-            var items = playlist.GetManageableItems()
-                .Select(i =>
-                {
-                    var subItem = i.Item2;
-
-                    var episode = subItem as Episode;
-
-                    if (episode != null)
-                    {
-                        var series = episode.Series;
-                        if (series != null && series.HasImage(ImageType.Primary))
-                        {
-                            return series;
-                        }
-                    }
-
-                    if (subItem.HasImage(ImageType.Primary))
-                    {
-                        return subItem;
-                    }
-
-                    var parent = subItem.Parent;
-
-                    if (parent != null && parent.HasImage(ImageType.Primary))
-                    {
-                        if (parent is MusicAlbum)
-                        {
-                            return parent;
-                        }
-                    }
-
-                    return null;
-                })
-                .Where(i => i != null)
-                .DistinctBy(i => i.Id)
-                .ToList();
-
-            return GetFinalItems(items);
-        }
-
-        private List<BaseItem> GetFinalItems(List<BaseItem> items)
-        {
-            // Rotate the images no more than once per day
-            var random = new Random(DateTime.Now.DayOfYear).Next();
-
-            return items
-                .OrderBy(i => random - items.IndexOf(i))
-                .Take(4)
-                .OrderBy(i => i.Name)
-                .ToList();
-        }
-
-        public async Task<Image> CreateImageAsync(IHasImages item, ImageType imageType, int imageIndex)
-        {
-            var items = GetItemsWithImages(item);
-
-            if (items.Count == 0)
-            {
-                return null;
-            }
-
-            return imageType == ImageType.Thumb ?
-                await GetThumbCollage(items).ConfigureAwait(false) :
-                await GetSquareCollage(items).ConfigureAwait(false);
-        }
-
-        private Task<Image> GetThumbCollage(List<BaseItem> items)
-        {
-            return GetThumbCollage(items.Select(i => i.GetImagePath(ImageType.Primary)).ToList());
-        }
-
-        private Task<Image> GetSquareCollage(List<BaseItem> items)
-        {
-            return GetSquareCollage(items.Select(i => i.GetImagePath(ImageType.Primary)).ToList());
-        }
-
-        private async Task<Image> GetThumbCollage(List<string> files)
-        {
-            if (files.Count < 3)
-            {
-                return await GetSingleImage(files).ConfigureAwait(false);
-            }
-
-            const int rows = 1;
-            const int cols = 3;
-
-            const int cellWidth = 2 * (ThumbImageWidth / 3);
-            const int cellHeight = ThumbImageHeight;
-            var index = 0;
-
-            var img = new Bitmap(ThumbImageWidth, ThumbImageHeight, PixelFormat.Format32bppPArgb);
-
-            using (var graphics = Graphics.FromImage(img))
-            {
-                graphics.CompositingQuality = CompositingQuality.HighQuality;
-                graphics.SmoothingMode = SmoothingMode.HighQuality;
-                graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
-                graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
-                graphics.CompositingMode = CompositingMode.SourceCopy;
-
-                for (var row = 0; row < rows; row++)
-                {
-                    for (var col = 0; col < cols; col++)
-                    {
-                        var x = col * (cellWidth / 2);
-                        var y = row * cellHeight;
-
-                        if (files.Count > index)
-                        {
-                            using (var fileStream = _fileSystem.GetFileStream(files[index], FileMode.Open, FileAccess.Read, FileShare.Read, true))
-                            {
-                                using (var memoryStream = new MemoryStream())
-                                {
-                                    await fileStream.CopyToAsync(memoryStream).ConfigureAwait(false);
-
-                                    memoryStream.Position = 0;
-
-                                    using (var imgtemp = Image.FromStream(memoryStream, true, false))
-                                    {
-                                        graphics.DrawImage(imgtemp, x, y, cellWidth, cellHeight);
-                                    }
-                                }
-                            }
-                        }
-
-                        index++;
-                    }
-                }
-            }
-
-            return img;
-        }
-
-        private const int SquareImageSize = 800;
-        private const int ThumbImageWidth = 1600;
-        private const int ThumbImageHeight = 900;
-
-        private async Task<Image> GetSquareCollage(List<string> files)
-        {
-            if (files.Count < 4)
-            {
-                return await GetSingleImage(files).ConfigureAwait(false);
-            }
-
-            const int rows = 2;
-            const int cols = 2;
-
-            const int singleSize = SquareImageSize / 2;
-            var index = 0;
-
-            var img = new Bitmap(SquareImageSize, SquareImageSize, PixelFormat.Format32bppPArgb);
-
-            using (var graphics = Graphics.FromImage(img))
-            {
-                graphics.CompositingQuality = CompositingQuality.HighQuality;
-                graphics.SmoothingMode = SmoothingMode.HighQuality;
-                graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
-                graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
-                graphics.CompositingMode = CompositingMode.SourceCopy;
-
-                for (var row = 0; row < rows; row++)
-                {
-                    for (var col = 0; col < cols; col++)
-                    {
-                        var x = col * singleSize;
-                        var y = row * singleSize;
-
-                        using (var fileStream = _fileSystem.GetFileStream(files[index], FileMode.Open, FileAccess.Read, FileShare.Read, true))
-                        {
-                            using (var memoryStream = new MemoryStream())
-                            {
-                                await fileStream.CopyToAsync(memoryStream).ConfigureAwait(false);
-
-                                memoryStream.Position = 0;
-
-                                using (var imgtemp = Image.FromStream(memoryStream, true, false))
-                                {
-                                    graphics.DrawImage(imgtemp, x, y, singleSize, singleSize);
-                                }
-                            }
-                        }
-
-                        index++;
-                    }
-                }
-            }
-
-            return img;
-        }
-
-        private Task<Image> GetSingleImage(List<string> files)
-        {
-            return GetImage(files[0]);
-        }
-
-        private async Task<Image> GetImage(string file)
-        {
-            using (var fileStream = _fileSystem.GetFileStream(file, FileMode.Open, FileAccess.Read, FileShare.Read, true))
-            {
-                var memoryStream = new MemoryStream();
-
-                await fileStream.CopyToAsync(memoryStream).ConfigureAwait(false);
-
-                memoryStream.Position = 0;
-
-                return Image.FromStream(memoryStream, true, false);
-            }
-        }
-
-        public string Name
+        public PhotoAlbumImageProvider(IFileSystem fileSystem, IProviderManager providerManager)
+            : base(fileSystem, providerManager)
         {
-            get { return "Dynamic Image Provider"; }
         }
 
-        public bool HasChanged(IHasMetadata item, IDirectoryService directoryService, DateTime date)
+        protected override Task<List<BaseItem>> GetItemsWithImages(IHasImages item)
         {
-            var items = GetItemsWithImages(item);
-            var cacheKey = GetConfigurationCacheKey(items);
+            var photoAlbum = (PhotoAlbum)item;
+            var items = GetFinalItems(photoAlbum.RecursiveChildren.Where(i => i is Photo).ToList());
 
-            return HasChanged(item, ImageType.Primary, cacheKey) || HasChanged(item, ImageType.Thumb, cacheKey);
+            return Task.FromResult(items);
         }
     }
 }