Remove MoreLINQ

15 files changed, 53 insertions, 116 deletions

diff --git a/Emby.Server.Implementations/Collections/CollectionImageProvider.cs b/Emby.Server.Implementations/Collections/CollectionImageProvider.cs
index 6642d1ef4..6aeadda2f 100644
--- a/Emby.Server.Implementations/Collections/CollectionImageProvider.cs
+++ b/Emby.Server.Implementations/Collections/CollectionImageProvider.cs
@@ -70,7 +70,8 @@ namespace Emby.Server.Implementations.Collections
                     return null;
                 })
                 .Where(i => i != null)
-                .DistinctBy(i => i.Id)
+                .GroupBy(x => x.Id)
+                .Select(x => x.First())
                 .OrderBy(i => Guid.NewGuid())
                 .ToList();
         }
diff --git a/Emby.Server.Implementations/Dto/DtoService.cs b/Emby.Server.Implementations/Dto/DtoService.cs
index a3529fdb4..f5634690f 100644
--- a/Emby.Server.Implementations/Dto/DtoService.cs
+++ b/Emby.Server.Implementations/Dto/DtoService.cs
@@ -620,7 +620,8 @@ namespace Emby.Server.Implementations.Dto
                     }
 
                 }).Where(i => i != null)
-                .DistinctBy(i => i.Name, StringComparer.OrdinalIgnoreCase)
+                .GroupBy(i => i.Name, StringComparer.OrdinalIgnoreCase)
+                .Select(x => x.First())
                 .ToDictionary(i => i.Name, StringComparer.OrdinalIgnoreCase);
 
             for (var i = 0; i < people.Count; i++)
diff --git a/Emby.Server.Implementations/EntryPoints/LibraryChangedNotifier.cs b/Emby.Server.Implementations/EntryPoints/LibraryChangedNotifier.cs
index 7a8b09cf7..a670a289c 100644
--- a/Emby.Server.Implementations/EntryPoints/LibraryChangedNotifier.cs
+++ b/Emby.Server.Implementations/EntryPoints/LibraryChangedNotifier.cs
@@ -277,14 +277,21 @@ namespace Emby.Server.Implementations.EntryPoints
             lock (_libraryChangedSyncLock)
             {
                 // Remove dupes in case some were saved multiple times
-                var foldersAddedTo = _foldersAddedTo.DistinctBy(i => i.Id).ToList();
+                var foldersAddedTo = _foldersAddedTo
+                                        .GroupBy(x => x.Id)
+                                        .Select(x => x.First())
+                                        .ToList();
 
-                var foldersRemovedFrom = _foldersRemovedFrom.DistinctBy(i => i.Id).ToList();
+                var foldersRemovedFrom = _foldersRemovedFrom
+                                            .GroupBy(x => x.Id)
+                                            .Select(x => x.First())
+                                            .ToList();
 
                 var itemsUpdated = _itemsUpdated
-                    .Where(i => !_itemsAdded.Contains(i))
-                    .DistinctBy(i => i.Id)
-                    .ToList();
+                                    .Where(i => !_itemsAdded.Contains(i))
+                                    .GroupBy(x => x.Id)
+                                    .Select(x => x.First())
+                                    .ToList();
 
                 SendChangeNotifications(_itemsAdded.ToList(), itemsUpdated, _itemsRemoved.ToList(), foldersAddedTo, foldersRemovedFrom, CancellationToken.None);
 
diff --git a/Emby.Server.Implementations/EntryPoints/UserDataChangeNotifier.cs b/Emby.Server.Implementations/EntryPoints/UserDataChangeNotifier.cs
index 9e71ffceb..69784e410 100644
--- a/Emby.Server.Implementations/EntryPoints/UserDataChangeNotifier.cs
+++ b/Emby.Server.Implementations/EntryPoints/UserDataChangeNotifier.cs
@@ -121,7 +121,8 @@ namespace Emby.Server.Implementations.EntryPoints
             var user = _userManager.GetUserById(userId);
 
             var dtoList = changedItems
-                .DistinctBy(i => i.Id)
+                .GroupBy(x => x.Id)
+                .Select(x => x.First())
                 .Select(i =>
                 {
                     var dto = _userDataManager.GetUserDataDto(i, user);
diff --git a/Emby.Server.Implementations/IO/FileRefresher.cs b/Emby.Server.Implementations/IO/FileRefresher.cs
index 12532a497..1cac0ba5c 100644
--- a/Emby.Server.Implementations/IO/FileRefresher.cs
+++ b/Emby.Server.Implementations/IO/FileRefresher.cs
@@ -146,8 +146,8 @@ namespace Emby.Server.Implementations.IO
                 .Distinct(StringComparer.OrdinalIgnoreCase)
                 .Select(GetAffectedBaseItem)
                 .Where(item => item != null)
-                .DistinctBy(i => i.Id)
-                .ToList();
+                .GroupBy(x => x.Id)
+                .Select(x => x.First());
 
             foreach (var item in itemsToRefresh)
             {
diff --git a/Emby.Server.Implementations/LiveTv/LiveTvManager.cs b/Emby.Server.Implementations/LiveTv/LiveTvManager.cs
index c0c91e345..c3437bcda 100644
--- a/Emby.Server.Implementations/LiveTv/LiveTvManager.cs
+++ b/Emby.Server.Implementations/LiveTv/LiveTvManager.cs
@@ -2464,7 +2464,8 @@ namespace Emby.Server.Implementations.LiveTv
                 .Where(i => i != null)
                 .Where(i => i.IsVisibleStandalone(user))
                 .SelectMany(i => _libraryManager.GetCollectionFolders(i))
-                .DistinctBy(i => i.Id)
+                .GroupBy(x => x.Id)
+                .Select(x => x.First())
                 .OrderBy(i => i.SortName)
                 .ToList();
 
diff --git a/Emby.Server.Implementations/Networking/NetworkManager.cs b/Emby.Server.Implementations/Networking/NetworkManager.cs
index f4b9f84dc..aa884664f 100644
--- a/Emby.Server.Implementations/Networking/NetworkManager.cs
+++ b/Emby.Server.Implementations/Networking/NetworkManager.cs
@@ -111,7 +111,8 @@ namespace Emby.Server.Implementations.Networking
                 .OrderBy(i => i.AddressFamily == AddressFamily.InterNetwork ? 0 : 1)
                 .ThenBy(i => listClone.IndexOf(i))
                 .Where(FilterIpAddress)
-                .DistinctBy(i => i.ToString())
+                .GroupBy(i => i.ToString())
+                .Select(x => x.First())
                 .ToList();
         }
 
@@ -429,7 +430,8 @@ namespace Emby.Server.Implementations.Networking
                     return new List<IPAddress>();
                 }
 
-            }).DistinctBy(i => i.ToString())
+            }).GroupBy(i => i.ToString())
+                .Select(x => x.First())
                 .ToList();
         }
 
diff --git a/Emby.Server.Implementations/Playlists/PlaylistImageProvider.cs b/Emby.Server.Implementations/Playlists/PlaylistImageProvider.cs
index 223153164..8a7c1492d 100644
--- a/Emby.Server.Implementations/Playlists/PlaylistImageProvider.cs
+++ b/Emby.Server.Implementations/Playlists/PlaylistImageProvider.cs
@@ -13,7 +13,6 @@ using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Playlists;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Entities;
-using MediaBrowser.Model.Extensions;
 using MediaBrowser.Model.IO;
 using MediaBrowser.Model.Querying;
 
@@ -64,7 +63,8 @@ namespace Emby.Server.Implementations.Playlists
                 })
                 .Where(i => i != null)
                 .OrderBy(i => Guid.NewGuid())
-                .DistinctBy(i => i.Id)
+                .GroupBy(x => x.Id)
+                .Select(x => x.First())
                 .ToList();
         }
     }
diff --git a/Emby.Server.Implementations/UserViews/DynamicImageProvider.cs b/Emby.Server.Implementations/UserViews/DynamicImageProvider.cs
index 937db3f23..4ec68e550 100644
--- a/Emby.Server.Implementations/UserViews/DynamicImageProvider.cs
+++ b/Emby.Server.Implementations/UserViews/DynamicImageProvider.cs
@@ -12,7 +12,6 @@ using MediaBrowser.Controller.Entities.TV;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Entities;
-using MediaBrowser.Model.Extensions;
 using MediaBrowser.Model.IO;
 
 namespace Emby.Server.Implementations.UserViews
@@ -83,7 +82,8 @@ namespace Emby.Server.Implementations.UserViews
 
                 return i;
 
-            }).DistinctBy(i => i.Id);
+            }).GroupBy(x => x.Id)
+            .Select(x => x.First());
 
             if (isUsingCollectionStrip)
             {
diff --git a/MediaBrowser.Api/Library/LibraryService.cs b/MediaBrowser.Api/Library/LibraryService.cs
index 8e6d1febb..d44b07256 100644
--- a/MediaBrowser.Api/Library/LibraryService.cs
+++ b/MediaBrowser.Api/Library/LibraryService.cs
@@ -551,7 +551,8 @@ namespace MediaBrowser.Api.Library
                     Name = i.Name,
                     DefaultEnabled = IsSaverEnabledByDefault(i.Name, types, isNewLibrary)
                 })
-                .DistinctBy(i => i.Name, StringComparer.OrdinalIgnoreCase)
+                .GroupBy(i => i.Name, StringComparer.OrdinalIgnoreCase)
+                .Select(x => x.First())
                 .ToArray();
 
             result.MetadataReaders = plugins
@@ -561,7 +562,8 @@ namespace MediaBrowser.Api.Library
                     Name = i.Name,
                     DefaultEnabled = true
                 })
-                .DistinctBy(i => i.Name, StringComparer.OrdinalIgnoreCase)
+                .GroupBy(i => i.Name, StringComparer.OrdinalIgnoreCase)
+                .Select(x => x.First())
                 .ToArray();
 
             result.SubtitleFetchers = plugins
@@ -571,7 +573,8 @@ namespace MediaBrowser.Api.Library
                     Name = i.Name,
                     DefaultEnabled = true
                 })
-                .DistinctBy(i => i.Name, StringComparer.OrdinalIgnoreCase)
+                .GroupBy(i => i.Name, StringComparer.OrdinalIgnoreCase)
+                .Select(x => x.First())
                 .ToArray();
 
             var typeOptions = new List<LibraryTypeOptions>();
@@ -593,7 +596,8 @@ namespace MediaBrowser.Api.Library
                         Name = i.Name,
                         DefaultEnabled = IsMetadataFetcherEnabledByDefault(i.Name, type, isNewLibrary)
                     })
-                    .DistinctBy(i => i.Name, StringComparer.OrdinalIgnoreCase)
+                    .GroupBy(i => i.Name, StringComparer.OrdinalIgnoreCase)
+                    .Select(x => x.First())
                     .ToArray(),
 
                     ImageFetchers = plugins
@@ -604,7 +608,8 @@ namespace MediaBrowser.Api.Library
                         Name = i.Name,
                         DefaultEnabled = IsImageFetcherEnabledByDefault(i.Name, type, isNewLibrary)
                     })
-                    .DistinctBy(i => i.Name, StringComparer.OrdinalIgnoreCase)
+                    .GroupBy(i => i.Name, StringComparer.OrdinalIgnoreCase)
+                    .Select(x => x.First())
                     .ToArray(),
 
                     SupportedImageTypes = plugins
diff --git a/MediaBrowser.Api/Movies/MoviesService.cs b/MediaBrowser.Api/Movies/MoviesService.cs
index 996087018..91766255f 100644
--- a/MediaBrowser.Api/Movies/MoviesService.cs
+++ b/MediaBrowser.Api/Movies/MoviesService.cs
@@ -268,7 +268,8 @@ namespace MediaBrowser.Api.Movies
                     EnableGroupByMetadataKey = true,
                     DtoOptions = dtoOptions
 
-                }).DistinctBy(i => i.GetProviderId(MetadataProviders.Imdb) ?? Guid.NewGuid().ToString("N"))
+                }).GroupBy(i => i.GetProviderId(MetadataProviders.Imdb) ?? Guid.NewGuid().ToString("N"))
+                .Select(x => x.First())
                 .Take(itemLimit)
                 .ToList();
 
@@ -308,7 +309,8 @@ namespace MediaBrowser.Api.Movies
                     EnableGroupByMetadataKey = true,
                     DtoOptions = dtoOptions
 
-                }).DistinctBy(i => i.GetProviderId(MetadataProviders.Imdb) ?? Guid.NewGuid().ToString("N"))
+                }).GroupBy(i => i.GetProviderId(MetadataProviders.Imdb) ?? Guid.NewGuid().ToString("N"))
+                .Select(x => x.First())
                 .Take(itemLimit)
                 .ToList();
 
diff --git a/MediaBrowser.Controller/Entities/CollectionFolder.cs b/MediaBrowser.Controller/Entities/CollectionFolder.cs
index 91cfcd0ce..275052d48 100644
--- a/MediaBrowser.Controller/Entities/CollectionFolder.cs
+++ b/MediaBrowser.Controller/Entities/CollectionFolder.cs
@@ -335,7 +335,11 @@ namespace MediaBrowser.Controller.Entities
                 .OfType<Folder>()
                 .ToList();
 
-            return PhysicalLocations.Where(i => !FileSystem.AreEqual(i, Path)).SelectMany(i => GetPhysicalParents(i, rootChildren)).DistinctBy(i => i.Id);
+            return PhysicalLocations
+                    .Where(i => !FileSystem.AreEqual(i, Path))
+                    .SelectMany(i => GetPhysicalParents(i, rootChildren))
+                    .GroupBy(x => x.Id)
+                    .Select(x => x.First());
         }
 
         private IEnumerable<Folder> GetPhysicalParents(string path, List<Folder> rootChildren)
diff --git a/MediaBrowser.Controller/Entities/TV/Series.cs b/MediaBrowser.Controller/Entities/TV/Series.cs
index 4539ab0f2..570e9389e 100644
--- a/MediaBrowser.Controller/Entities/TV/Series.cs
+++ b/MediaBrowser.Controller/Entities/TV/Series.cs
@@ -270,7 +270,7 @@ namespace MediaBrowser.Controller.Entities.TV
             // This depends on settings for that series
             // When this happens, remove the duplicate from season 0
 
-            return allEpisodes.DistinctBy(i => i.Id).Reverse();
+            return allEpisodes.GroupBy(i => i.Id).Select(x => x.First()).Reverse();
         }
 
         public async Task RefreshAllMetadata(MetadataRefreshOptions refreshOptions, IProgress<double> progress, CancellationToken cancellationToken)
diff --git a/MediaBrowser.Controller/Library/NameExtensions.cs b/MediaBrowser.Controller/Library/NameExtensions.cs
index e2988a831..6b0b7e53a 100644
--- a/MediaBrowser.Controller/Library/NameExtensions.cs
+++ b/MediaBrowser.Controller/Library/NameExtensions.cs
@@ -1,7 +1,7 @@
 using System;
+using System.Linq;
 using System.Collections.Generic;
 using MediaBrowser.Controller.Extensions;
-using MediaBrowser.Model.Extensions;
 
 namespace MediaBrowser.Controller.Library
 {
@@ -14,13 +14,11 @@ namespace MediaBrowser.Controller.Library
                 return string.Empty;
             }
 
-            //return name;
             return name.RemoveDiacritics();
         }
 
         public static IEnumerable<string> DistinctNames(this IEnumerable<string> names)
-        {
-            return names.DistinctBy(RemoveDiacritics, StringComparer.OrdinalIgnoreCase);
-        }
+            => names.GroupBy(RemoveDiacritics, StringComparer.OrdinalIgnoreCase)
+                    .Select(x => x.First());
     }
 }
diff --git a/MediaBrowser.Model/Extensions/LinqExtensions.cs b/MediaBrowser.Model/Extensions/LinqExtensions.cs
deleted file mode 100644
index f0febf1d0..000000000
--- a/MediaBrowser.Model/Extensions/LinqExtensions.cs
+++ /dev/null
@@ -1,85 +0,0 @@
-using System;
-using System.Collections.Generic;
-
-// TODO: @bond Remove
-namespace MediaBrowser.Model.Extensions
-{
-    // MoreLINQ - Extensions to LINQ to Objects
-    // Copyright (c) 2008 Jonathan Skeet. All rights reserved.
-    //
-    // Licensed under the Apache License, Version 2.0 (the "License");
-    // you may not use this file except in compliance with the License.
-    // You may obtain a copy of the License at
-    //
-    //     http://www.apache.org/licenses/LICENSE-2.0
-    //
-    // Unless required by applicable law or agreed to in writing, software
-    // distributed under the License is distributed on an "AS IS" BASIS,
-    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-    // See the License for the specific language governing permissions and
-    // limitations under the License.
-
-    public static class LinqExtensions
-    {
-        /// <summary>
-        /// Returns all distinct elements of the given source, where "distinctness"
-        /// is determined via a projection and the default equality comparer for the projected type.
-        /// </summary>
-        /// <remarks>
-        /// This operator uses deferred execution and streams the results, although
-        /// a set of already-seen keys is retained. If a key is seen multiple times,
-        /// only the first element with that key is returned.
-        /// </remarks>
-        /// <typeparam name="TSource">Type of the source sequence</typeparam>
-        /// <typeparam name="TKey">Type of the projected element</typeparam>
-        /// <param name="source">Source sequence</param>
-        /// <param name="keySelector">Projection for determining "distinctness"</param>
-        /// <returns>A sequence consisting of distinct elements from the source sequence,
-        /// comparing them by the specified key projection.</returns>
-
-        public static IEnumerable<TSource> DistinctBy<TSource, TKey>(this IEnumerable<TSource> source,
-            Func<TSource, TKey> keySelector)
-        {
-            return source.DistinctBy(keySelector, null);
-        }
-
-        /// <summary>
-        /// Returns all distinct elements of the given source, where "distinctness"
-        /// is determined via a projection and the specified comparer for the projected type.
-        /// </summary>
-        /// <remarks>
-        /// This operator uses deferred execution and streams the results, although
-        /// a set of already-seen keys is retained. If a key is seen multiple times,
-        /// only the first element with that key is returned.
-        /// </remarks>
-        /// <typeparam name="TSource">Type of the source sequence</typeparam>
-        /// <typeparam name="TKey">Type of the projected element</typeparam>
-        /// <param name="source">Source sequence</param>
-        /// <param name="keySelector">Projection for determining "distinctness"</param>
-        /// <param name="comparer">The equality comparer to use to determine whether or not keys are equal.
-        /// If null, the default equality comparer for <c>TSource</c> is used.</param>
-        /// <returns>A sequence consisting of distinct elements from the source sequence,
-        /// comparing them by the specified key projection.</returns>
-
-        public static IEnumerable<TSource> DistinctBy<TSource, TKey>(this IEnumerable<TSource> source,
-            Func<TSource, TKey> keySelector, IEqualityComparer<TKey> comparer)
-        {
-            if (source == null) throw new ArgumentNullException(nameof(source));
-            if (keySelector == null) throw new ArgumentNullException(nameof(keySelector));
-            return DistinctByImpl(source, keySelector, comparer);
-        }
-
-        private static IEnumerable<TSource> DistinctByImpl<TSource, TKey>(IEnumerable<TSource> source,
-            Func<TSource, TKey> keySelector, IEqualityComparer<TKey> comparer)
-        {
-            var knownKeys = new HashSet<TKey>(comparer);
-            foreach (var element in source)
-            {
-                if (knownKeys.Add(keySelector(element)))
-                {
-                    yield return element;
-                }
-            }
-        }
-    }
-}