Merge remote-tracking branch 'origin/master' into HEAD

24 files changed, 165 insertions, 140 deletions

diff --git a/Emby.Server.Implementations/Sorting/AiredEpisodeOrderComparer.cs b/Emby.Server.Implementations/Sorting/AiredEpisodeOrderComparer.cs
index 60698e803d..db8b689491 100644
--- a/Emby.Server.Implementations/Sorting/AiredEpisodeOrderComparer.cs
+++ b/Emby.Server.Implementations/Sorting/AiredEpisodeOrderComparer.cs
@@ -11,12 +11,18 @@ namespace Emby.Server.Implementations.Sorting
     public class AiredEpisodeOrderComparer : IBaseItemComparer
     {
         /// <summary>
+        /// Gets the name.
+        /// </summary>
+        /// <value>The name.</value>
+        public string Name => ItemSortBy.AiredEpisodeOrder;
+
+        /// <summary>
         /// Compares the specified x.
         /// </summary>
         /// <param name="x">The x.</param>
         /// <param name="y">The y.</param>
         /// <returns>System.Int32.</returns>
-        public int Compare(BaseItem x, BaseItem y)
+        public int Compare(BaseItem? x, BaseItem? y)
         {
             if (x == null)
             {
@@ -28,16 +34,6 @@ namespace Emby.Server.Implementations.Sorting
                 throw new ArgumentNullException(nameof(y));
             }
 
-            if (x.PremiereDate.HasValue && y.PremiereDate.HasValue)
-            {
-                var val = DateTime.Compare(x.PremiereDate.Value, y.PremiereDate.Value);
-
-                if (val != 0)
-                {
-                    // return val;
-                }
-            }
-
             var episode1 = x as Episode;
             var episode2 = y as Episode;
 
@@ -156,14 +152,14 @@ namespace Emby.Server.Implementations.Sorting
         {
             var xValue = ((x.ParentIndexNumber ?? -1) * 1000) + (x.IndexNumber ?? -1);
             var yValue = ((y.ParentIndexNumber ?? -1) * 1000) + (y.IndexNumber ?? -1);
+            var comparisonResult = xValue.CompareTo(yValue);
+            // If equal, compare premiere dates
+            if (comparisonResult == 0 && x.PremiereDate.HasValue && y.PremiereDate.HasValue)
+            {
+                comparisonResult = DateTime.Compare(x.PremiereDate.Value, y.PremiereDate.Value);
+            }
 
-            return xValue.CompareTo(yValue);
+            return comparisonResult;
         }
-
-        /// <summary>
-        /// Gets the name.
-        /// </summary>
-        /// <value>The name.</value>
-        public string Name => ItemSortBy.AiredEpisodeOrder;
     }
 }
diff --git a/Emby.Server.Implementations/Sorting/AlbumArtistComparer.cs b/Emby.Server.Implementations/Sorting/AlbumArtistComparer.cs
index 7657cc74e1..67a9fbd3bc 100644
--- a/Emby.Server.Implementations/Sorting/AlbumArtistComparer.cs
+++ b/Emby.Server.Implementations/Sorting/AlbumArtistComparer.cs
@@ -13,14 +13,20 @@ namespace Emby.Server.Implementations.Sorting
     public class AlbumArtistComparer : IBaseItemComparer
     {
         /// <summary>
+        /// Gets the name.
+        /// </summary>
+        /// <value>The name.</value>
+        public string Name => ItemSortBy.AlbumArtist;
+
+        /// <summary>
         /// Compares the specified x.
         /// </summary>
         /// <param name="x">The x.</param>
         /// <param name="y">The y.</param>
         /// <returns>System.Int32.</returns>
-        public int Compare(BaseItem x, BaseItem y)
+        public int Compare(BaseItem? x, BaseItem? y)
         {
-            return string.Compare(GetValue(x), GetValue(y), StringComparison.CurrentCultureIgnoreCase);
+            return string.Compare(GetValue(x), GetValue(y), StringComparison.OrdinalIgnoreCase);
         }
 
         /// <summary>
@@ -28,17 +34,11 @@ namespace Emby.Server.Implementations.Sorting
         /// </summary>
         /// <param name="x">The x.</param>
         /// <returns>System.String.</returns>
-        private static string GetValue(BaseItem x)
+        private static string? GetValue(BaseItem? x)
         {
             var audio = x as IHasAlbumArtist;
 
             return audio?.AlbumArtists.FirstOrDefault();
         }
-
-        /// <summary>
-        /// Gets the name.
-        /// </summary>
-        /// <value>The name.</value>
-        public string Name => ItemSortBy.AlbumArtist;
     }
 }
diff --git a/Emby.Server.Implementations/Sorting/AlbumComparer.cs b/Emby.Server.Implementations/Sorting/AlbumComparer.cs
index 7dfdd9ecff..4d09dda842 100644
--- a/Emby.Server.Implementations/Sorting/AlbumComparer.cs
+++ b/Emby.Server.Implementations/Sorting/AlbumComparer.cs
@@ -12,14 +12,20 @@ namespace Emby.Server.Implementations.Sorting
     public class AlbumComparer : IBaseItemComparer
     {
         /// <summary>
+        /// Gets the name.
+        /// </summary>
+        /// <value>The name.</value>
+        public string Name => ItemSortBy.Album;
+
+        /// <summary>
         /// Compares the specified x.
         /// </summary>
         /// <param name="x">The x.</param>
         /// <param name="y">The y.</param>
         /// <returns>System.Int32.</returns>
-        public int Compare(BaseItem x, BaseItem y)
+        public int Compare(BaseItem? x, BaseItem? y)
         {
-            return string.Compare(GetValue(x), GetValue(y), StringComparison.CurrentCultureIgnoreCase);
+            return string.Compare(GetValue(x), GetValue(y), StringComparison.OrdinalIgnoreCase);
         }
 
         /// <summary>
@@ -27,17 +33,9 @@ namespace Emby.Server.Implementations.Sorting
         /// </summary>
         /// <param name="x">The x.</param>
         /// <returns>System.String.</returns>
-        private static string GetValue(BaseItem x)
+        private static string? GetValue(BaseItem? x)
         {
-            var audio = x as Audio;
-
-            return audio == null ? string.Empty : audio.Album;
+            return x is Audio audio ? audio.Album : string.Empty;
         }
-
-        /// <summary>
-        /// Gets the name.
-        /// </summary>
-        /// <value>The name.</value>
-        public string Name => ItemSortBy.Album;
     }
 }
diff --git a/Emby.Server.Implementations/Sorting/ArtistComparer.cs b/Emby.Server.Implementations/Sorting/ArtistComparer.cs
index 756d3c5b6c..a8bb55e2bc 100644
--- a/Emby.Server.Implementations/Sorting/ArtistComparer.cs
+++ b/Emby.Server.Implementations/Sorting/ArtistComparer.cs
@@ -15,9 +15,9 @@ namespace Emby.Server.Implementations.Sorting
         public string Name => ItemSortBy.Artist;
 
         /// <inheritdoc />
-        public int Compare(BaseItem x, BaseItem y)
+        public int Compare(BaseItem? x, BaseItem? y)
         {
-            return string.Compare(GetValue(x), GetValue(y), StringComparison.CurrentCultureIgnoreCase);
+            return string.Compare(GetValue(x), GetValue(y), StringComparison.OrdinalIgnoreCase);
         }
 
         /// <summary>
@@ -25,9 +25,9 @@ namespace Emby.Server.Implementations.Sorting
         /// </summary>
         /// <param name="x">The x.</param>
         /// <returns>System.String.</returns>
-        private static string GetValue(BaseItem x)
+        private static string? GetValue(BaseItem? x)
         {
-            if (!(x is Audio audio))
+            if (x is not Audio audio)
             {
                 return string.Empty;
             }
diff --git a/Emby.Server.Implementations/Sorting/CommunityRatingComparer.cs b/Emby.Server.Implementations/Sorting/CommunityRatingComparer.cs
index 980954ba03..5f142fa4bb 100644
--- a/Emby.Server.Implementations/Sorting/CommunityRatingComparer.cs
+++ b/Emby.Server.Implementations/Sorting/CommunityRatingComparer.cs
@@ -21,7 +21,7 @@ namespace Emby.Server.Implementations.Sorting
         /// <param name="x">The x.</param>
         /// <param name="y">The y.</param>
         /// <returns>System.Int32.</returns>
-        public int Compare(BaseItem x, BaseItem y)
+        public int Compare(BaseItem? x, BaseItem? y)
         {
             if (x == null)
             {
diff --git a/Emby.Server.Implementations/Sorting/CriticRatingComparer.cs b/Emby.Server.Implementations/Sorting/CriticRatingComparer.cs
index fa136c36d0..ba1835e4f2 100644
--- a/Emby.Server.Implementations/Sorting/CriticRatingComparer.cs
+++ b/Emby.Server.Implementations/Sorting/CriticRatingComparer.cs
@@ -10,25 +10,25 @@ namespace Emby.Server.Implementations.Sorting
     public class CriticRatingComparer : IBaseItemComparer
     {
         /// <summary>
+        /// Gets the name.
+        /// </summary>
+        /// <value>The name.</value>
+        public string Name => ItemSortBy.CriticRating;
+
+        /// <summary>
         /// Compares the specified x.
         /// </summary>
         /// <param name="x">The x.</param>
         /// <param name="y">The y.</param>
         /// <returns>System.Int32.</returns>
-        public int Compare(BaseItem x, BaseItem y)
+        public int Compare(BaseItem? x, BaseItem? y)
         {
             return GetValue(x).CompareTo(GetValue(y));
         }
 
-        private static float GetValue(BaseItem x)
+        private static float GetValue(BaseItem? x)
         {
-            return x.CriticRating ?? 0;
+            return x?.CriticRating ?? 0;
         }
-
-        /// <summary>
-        /// Gets the name.
-        /// </summary>
-        /// <value>The name.</value>
-        public string Name => ItemSortBy.CriticRating;
     }
 }
diff --git a/Emby.Server.Implementations/Sorting/DateCreatedComparer.cs b/Emby.Server.Implementations/Sorting/DateCreatedComparer.cs
index cbca300d2f..8b460166ca 100644
--- a/Emby.Server.Implementations/Sorting/DateCreatedComparer.cs
+++ b/Emby.Server.Implementations/Sorting/DateCreatedComparer.cs
@@ -11,12 +11,18 @@ namespace Emby.Server.Implementations.Sorting
     public class DateCreatedComparer : IBaseItemComparer
     {
         /// <summary>
+        /// Gets the name.
+        /// </summary>
+        /// <value>The name.</value>
+        public string Name => ItemSortBy.DateCreated;
+
+        /// <summary>
         /// Compares the specified x.
         /// </summary>
         /// <param name="x">The x.</param>
         /// <param name="y">The y.</param>
         /// <returns>System.Int32.</returns>
-        public int Compare(BaseItem x, BaseItem y)
+        public int Compare(BaseItem? x, BaseItem? y)
         {
             if (x == null)
             {
@@ -30,11 +36,5 @@ namespace Emby.Server.Implementations.Sorting
 
             return DateTime.Compare(x.DateCreated, y.DateCreated);
         }
-
-        /// <summary>
-        /// Gets the name.
-        /// </summary>
-        /// <value>The name.</value>
-        public string Name => ItemSortBy.DateCreated;
     }
 }
diff --git a/Emby.Server.Implementations/Sorting/DateLastMediaAddedComparer.cs b/Emby.Server.Implementations/Sorting/DateLastMediaAddedComparer.cs
index 03ff19d21c..b1cb123ce1 100644
--- a/Emby.Server.Implementations/Sorting/DateLastMediaAddedComparer.cs
+++ b/Emby.Server.Implementations/Sorting/DateLastMediaAddedComparer.cs
@@ -1,3 +1,4 @@
+#nullable disable
 #pragma warning disable CS1591
 
 using System;
diff --git a/Emby.Server.Implementations/Sorting/DatePlayedComparer.cs b/Emby.Server.Implementations/Sorting/DatePlayedComparer.cs
index 16bd2aff86..ec818253be 100644
--- a/Emby.Server.Implementations/Sorting/DatePlayedComparer.cs
+++ b/Emby.Server.Implementations/Sorting/DatePlayedComparer.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using Jellyfin.Data.Entities;
 using MediaBrowser.Controller.Entities;
@@ -31,6 +33,12 @@ namespace Emby.Server.Implementations.Sorting
         public IUserDataManager UserDataRepository { get; set; }
 
         /// <summary>
+        /// Gets the name.
+        /// </summary>
+        /// <value>The name.</value>
+        public string Name => ItemSortBy.DatePlayed;
+
+        /// <summary>
         /// Compares the specified x.
         /// </summary>
         /// <param name="x">The x.</param>
@@ -57,11 +65,5 @@ namespace Emby.Server.Implementations.Sorting
 
             return DateTime.MinValue;
         }
-
-        /// <summary>
-        /// Gets the name.
-        /// </summary>
-        /// <value>The name.</value>
-        public string Name => ItemSortBy.DatePlayed;
     }
 }
diff --git a/Emby.Server.Implementations/Sorting/IsFavoriteOrLikeComparer.cs b/Emby.Server.Implementations/Sorting/IsFavoriteOrLikeComparer.cs
index 0c4e82d011..73e628cf75 100644
--- a/Emby.Server.Implementations/Sorting/IsFavoriteOrLikeComparer.cs
+++ b/Emby.Server.Implementations/Sorting/IsFavoriteOrLikeComparer.cs
@@ -1,3 +1,4 @@
+#nullable disable
 #pragma warning disable CS1591
 
 using Jellyfin.Data.Entities;
diff --git a/Emby.Server.Implementations/Sorting/IsFolderComparer.cs b/Emby.Server.Implementations/Sorting/IsFolderComparer.cs
index a35192eff8..3c5ddeefaa 100644
--- a/Emby.Server.Implementations/Sorting/IsFolderComparer.cs
+++ b/Emby.Server.Implementations/Sorting/IsFolderComparer.cs
@@ -20,7 +20,7 @@ namespace Emby.Server.Implementations.Sorting
         /// <param name="x">The x.</param>
         /// <param name="y">The y.</param>
         /// <returns>System.Int32.</returns>
-        public int Compare(BaseItem x, BaseItem y)
+        public int Compare(BaseItem? x, BaseItem? y)
         {
             return GetValue(x).CompareTo(GetValue(y));
         }
@@ -30,9 +30,9 @@ namespace Emby.Server.Implementations.Sorting
         /// </summary>
         /// <param name="x">The x.</param>
         /// <returns>System.String.</returns>
-        private static int GetValue(BaseItem x)
+        private static int GetValue(BaseItem? x)
         {
-            return x.IsFolder ? 0 : 1;
+            return x?.IsFolder ?? true ? 0 : 1;
         }
     }
 }
diff --git a/Emby.Server.Implementations/Sorting/IsPlayedComparer.cs b/Emby.Server.Implementations/Sorting/IsPlayedComparer.cs
index d95948406f..7d77a8bc5a 100644
--- a/Emby.Server.Implementations/Sorting/IsPlayedComparer.cs
+++ b/Emby.Server.Implementations/Sorting/IsPlayedComparer.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using Jellyfin.Data.Entities;
diff --git a/Emby.Server.Implementations/Sorting/IsUnplayedComparer.cs b/Emby.Server.Implementations/Sorting/IsUnplayedComparer.cs
index 1632c5a7a9..926835f906 100644
--- a/Emby.Server.Implementations/Sorting/IsUnplayedComparer.cs
+++ b/Emby.Server.Implementations/Sorting/IsUnplayedComparer.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using Jellyfin.Data.Entities;
diff --git a/Emby.Server.Implementations/Sorting/NameComparer.cs b/Emby.Server.Implementations/Sorting/NameComparer.cs
index da020d8d8e..c2875eeb97 100644
--- a/Emby.Server.Implementations/Sorting/NameComparer.cs
+++ b/Emby.Server.Implementations/Sorting/NameComparer.cs
@@ -11,12 +11,18 @@ namespace Emby.Server.Implementations.Sorting
     public class NameComparer : IBaseItemComparer
     {
         /// <summary>
+        /// Gets the name.
+        /// </summary>
+        /// <value>The name.</value>
+        public string Name => ItemSortBy.Name;
+
+        /// <summary>
         /// Compares the specified x.
         /// </summary>
         /// <param name="x">The x.</param>
         /// <param name="y">The y.</param>
         /// <returns>System.Int32.</returns>
-        public int Compare(BaseItem x, BaseItem y)
+        public int Compare(BaseItem? x, BaseItem? y)
         {
             if (x == null)
             {
@@ -28,13 +34,7 @@ namespace Emby.Server.Implementations.Sorting
                 throw new ArgumentNullException(nameof(y));
             }
 
-            return string.Compare(x.Name, y.Name, StringComparison.CurrentCultureIgnoreCase);
+            return string.Compare(x.Name, y.Name, StringComparison.OrdinalIgnoreCase);
         }
-
-        /// <summary>
-        /// Gets the name.
-        /// </summary>
-        /// <value>The name.</value>
-        public string Name => ItemSortBy.Name;
     }
 }
diff --git a/Emby.Server.Implementations/Sorting/OfficialRatingComparer.cs b/Emby.Server.Implementations/Sorting/OfficialRatingComparer.cs
index 76bb798b5f..a81f78ebfc 100644
--- a/Emby.Server.Implementations/Sorting/OfficialRatingComparer.cs
+++ b/Emby.Server.Implementations/Sorting/OfficialRatingComparer.cs
@@ -29,7 +29,7 @@ namespace Emby.Server.Implementations.Sorting
         /// <param name="x">The x.</param>
         /// <param name="y">The y.</param>
         /// <returns>System.Int32.</returns>
-        public int Compare(BaseItem x, BaseItem y)
+        public int Compare(BaseItem? x, BaseItem? y)
         {
             if (x == null)
             {
diff --git a/Emby.Server.Implementations/Sorting/PlayCountComparer.cs b/Emby.Server.Implementations/Sorting/PlayCountComparer.cs
index 5c28303229..45c9044c52 100644
--- a/Emby.Server.Implementations/Sorting/PlayCountComparer.cs
+++ b/Emby.Server.Implementations/Sorting/PlayCountComparer.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using Jellyfin.Data.Entities;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
@@ -18,6 +20,24 @@ namespace Emby.Server.Implementations.Sorting
         public User User { get; set; }
 
         /// <summary>
+        /// Gets the name.
+        /// </summary>
+        /// <value>The name.</value>
+        public string Name => ItemSortBy.PlayCount;
+
+        /// <summary>
+        /// Gets or sets the user data repository.
+        /// </summary>
+        /// <value>The user data repository.</value>
+        public IUserDataManager UserDataRepository { get; set; }
+
+        /// <summary>
+        /// Gets or sets the user manager.
+        /// </summary>
+        /// <value>The user manager.</value>
+        public IUserManager UserManager { get; set; }
+
+        /// <summary>
         /// Compares the specified x.
         /// </summary>
         /// <param name="x">The x.</param>
@@ -39,23 +59,5 @@ namespace Emby.Server.Implementations.Sorting
 
             return userdata == null ? 0 : userdata.PlayCount;
         }
-
-        /// <summary>
-        /// Gets the name.
-        /// </summary>
-        /// <value>The name.</value>
-        public string Name => ItemSortBy.PlayCount;
-
-        /// <summary>
-        /// Gets or sets the user data repository.
-        /// </summary>
-        /// <value>The user data repository.</value>
-        public IUserDataManager UserDataRepository { get; set; }
-
-        /// <summary>
-        /// Gets or sets the user manager.
-        /// </summary>
-        /// <value>The user manager.</value>
-        public IUserManager UserManager { get; set; }
     }
 }
diff --git a/Emby.Server.Implementations/Sorting/PremiereDateComparer.cs b/Emby.Server.Implementations/Sorting/PremiereDateComparer.cs
index 92ac04dc66..b217556ef3 100644
--- a/Emby.Server.Implementations/Sorting/PremiereDateComparer.cs
+++ b/Emby.Server.Implementations/Sorting/PremiereDateComparer.cs
@@ -11,12 +11,18 @@ namespace Emby.Server.Implementations.Sorting
     public class PremiereDateComparer : IBaseItemComparer
     {
         /// <summary>
+        /// Gets the name.
+        /// </summary>
+        /// <value>The name.</value>
+        public string Name => ItemSortBy.PremiereDate;
+
+        /// <summary>
         /// Compares the specified x.
         /// </summary>
         /// <param name="x">The x.</param>
         /// <param name="y">The y.</param>
         /// <returns>System.Int32.</returns>
-        public int Compare(BaseItem x, BaseItem y)
+        public int Compare(BaseItem? x, BaseItem? y)
         {
             return GetDate(x).CompareTo(GetDate(y));
         }
@@ -26,8 +32,13 @@ namespace Emby.Server.Implementations.Sorting
         /// </summary>
         /// <param name="x">The x.</param>
         /// <returns>DateTime.</returns>
-        private static DateTime GetDate(BaseItem x)
+        private static DateTime GetDate(BaseItem? x)
         {
+            if (x == null)
+            {
+                return DateTime.MinValue;
+            }
+
             if (x.PremiereDate.HasValue)
             {
                 return x.PremiereDate.Value;
@@ -47,11 +58,5 @@ namespace Emby.Server.Implementations.Sorting
 
             return DateTime.MinValue;
         }
-
-        /// <summary>
-        /// Gets the name.
-        /// </summary>
-        /// <value>The name.</value>
-        public string Name => ItemSortBy.PremiereDate;
     }
 }
diff --git a/Emby.Server.Implementations/Sorting/ProductionYearComparer.cs b/Emby.Server.Implementations/Sorting/ProductionYearComparer.cs
index e2857df0b9..d2022df7a6 100644
--- a/Emby.Server.Implementations/Sorting/ProductionYearComparer.cs
+++ b/Emby.Server.Implementations/Sorting/ProductionYearComparer.cs
@@ -10,12 +10,18 @@ namespace Emby.Server.Implementations.Sorting
     public class ProductionYearComparer : IBaseItemComparer
     {
         /// <summary>
+        /// Gets the name.
+        /// </summary>
+        /// <value>The name.</value>
+        public string Name => ItemSortBy.ProductionYear;
+
+        /// <summary>
         /// Compares the specified x.
         /// </summary>
         /// <param name="x">The x.</param>
         /// <param name="y">The y.</param>
         /// <returns>System.Int32.</returns>
-        public int Compare(BaseItem x, BaseItem y)
+        public int Compare(BaseItem? x, BaseItem? y)
         {
             return GetValue(x).CompareTo(GetValue(y));
         }
@@ -25,8 +31,13 @@ namespace Emby.Server.Implementations.Sorting
         /// </summary>
         /// <param name="x">The x.</param>
         /// <returns>DateTime.</returns>
-        private static int GetValue(BaseItem x)
+        private static int GetValue(BaseItem? x)
         {
+            if (x == null)
+            {
+                return 0;
+            }
+
             if (x.ProductionYear.HasValue)
             {
                 return x.ProductionYear.Value;
@@ -39,11 +50,5 @@ namespace Emby.Server.Implementations.Sorting
 
             return 0;
         }
-
-        /// <summary>
-        /// Gets the name.
-        /// </summary>
-        /// <value>The name.</value>
-        public string Name => ItemSortBy.ProductionYear;
     }
 }
diff --git a/Emby.Server.Implementations/Sorting/RandomComparer.cs b/Emby.Server.Implementations/Sorting/RandomComparer.cs
index 7739d04182..bf0168222d 100644
--- a/Emby.Server.Implementations/Sorting/RandomComparer.cs
+++ b/Emby.Server.Implementations/Sorting/RandomComparer.cs
@@ -11,20 +11,20 @@ namespace Emby.Server.Implementations.Sorting
     public class RandomComparer : IBaseItemComparer
     {
         /// <summary>
+        /// Gets the name.
+        /// </summary>
+        /// <value>The name.</value>
+        public string Name => ItemSortBy.Random;
+
+        /// <summary>
         /// Compares the specified x.
         /// </summary>
         /// <param name="x">The x.</param>
         /// <param name="y">The y.</param>
         /// <returns>System.Int32.</returns>
-        public int Compare(BaseItem x, BaseItem y)
+        public int Compare(BaseItem? x, BaseItem? y)
         {
             return Guid.NewGuid().CompareTo(Guid.NewGuid());
         }
-
-        /// <summary>
-        /// Gets the name.
-        /// </summary>
-        /// <value>The name.</value>
-        public string Name => ItemSortBy.Random;
     }
 }
diff --git a/Emby.Server.Implementations/Sorting/RuntimeComparer.cs b/Emby.Server.Implementations/Sorting/RuntimeComparer.cs
index dde44333d5..e32e5552e4 100644
--- a/Emby.Server.Implementations/Sorting/RuntimeComparer.cs
+++ b/Emby.Server.Implementations/Sorting/RuntimeComparer.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Sorting;
@@ -11,6 +13,12 @@ namespace Emby.Server.Implementations.Sorting
     public class RuntimeComparer : IBaseItemComparer
     {
         /// <summary>
+        /// Gets the name.
+        /// </summary>
+        /// <value>The name.</value>
+        public string Name => ItemSortBy.Runtime;
+
+        /// <summary>
         /// Compares the specified x.
         /// </summary>
         /// <param name="x">The x.</param>
@@ -30,11 +38,5 @@ namespace Emby.Server.Implementations.Sorting
 
             return (x.RunTimeTicks ?? 0).CompareTo(y.RunTimeTicks ?? 0);
         }
-
-        /// <summary>
-        /// Gets the name.
-        /// </summary>
-        /// <value>The name.</value>
-        public string Name => ItemSortBy.Runtime;
     }
 }
diff --git a/Emby.Server.Implementations/Sorting/SeriesSortNameComparer.cs b/Emby.Server.Implementations/Sorting/SeriesSortNameComparer.cs
index b9205ee076..0bd9600b98 100644
--- a/Emby.Server.Implementations/Sorting/SeriesSortNameComparer.cs
+++ b/Emby.Server.Implementations/Sorting/SeriesSortNameComparer.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using System;
@@ -23,7 +25,7 @@ namespace Emby.Server.Implementations.Sorting
         /// <returns>System.Int32.</returns>
         public int Compare(BaseItem x, BaseItem y)
         {
-            return string.Compare(GetValue(x), GetValue(y), StringComparison.CurrentCultureIgnoreCase);
+            return string.Compare(GetValue(x), GetValue(y), StringComparison.OrdinalIgnoreCase);
         }
 
         private static string GetValue(BaseItem item)
diff --git a/Emby.Server.Implementations/Sorting/SortNameComparer.cs b/Emby.Server.Implementations/Sorting/SortNameComparer.cs
index f745e193b4..79be9a89a4 100644
--- a/Emby.Server.Implementations/Sorting/SortNameComparer.cs
+++ b/Emby.Server.Implementations/Sorting/SortNameComparer.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 using System;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Sorting;
@@ -11,6 +13,12 @@ namespace Emby.Server.Implementations.Sorting
     public class SortNameComparer : IBaseItemComparer
     {
         /// <summary>
+        /// Gets the name.
+        /// </summary>
+        /// <value>The name.</value>
+        public string Name => ItemSortBy.SortName;
+
+        /// <summary>
         /// Compares the specified x.
         /// </summary>
         /// <param name="x">The x.</param>
@@ -28,13 +36,7 @@ namespace Emby.Server.Implementations.Sorting
                 throw new ArgumentNullException(nameof(y));
             }
 
-            return string.Compare(x.SortName, y.SortName, StringComparison.CurrentCultureIgnoreCase);
+            return string.Compare(x.SortName, y.SortName, StringComparison.OrdinalIgnoreCase);
         }
-
-        /// <summary>
-        /// Gets the name.
-        /// </summary>
-        /// <value>The name.</value>
-        public string Name => ItemSortBy.SortName;
     }
 }
diff --git a/Emby.Server.Implementations/Sorting/StartDateComparer.cs b/Emby.Server.Implementations/Sorting/StartDateComparer.cs
index 558a3d3513..c3df7c47e6 100644
--- a/Emby.Server.Implementations/Sorting/StartDateComparer.cs
+++ b/Emby.Server.Implementations/Sorting/StartDateComparer.cs
@@ -1,3 +1,5 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using System;
diff --git a/Emby.Server.Implementations/Sorting/StudioComparer.cs b/Emby.Server.Implementations/Sorting/StudioComparer.cs
index 5766dc542b..4d89cfa8b2 100644
--- a/Emby.Server.Implementations/Sorting/StudioComparer.cs
+++ b/Emby.Server.Implementations/Sorting/StudioComparer.cs
@@ -1,7 +1,10 @@
+#nullable disable
+
 #pragma warning disable CS1591
 
 using System;
 using System.Linq;
+using Jellyfin.Extensions;
 using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Sorting;
 using MediaBrowser.Model.Querying;
@@ -11,6 +14,12 @@ namespace Emby.Server.Implementations.Sorting
     public class StudioComparer : IBaseItemComparer
     {
         /// <summary>
+        /// Gets the name.
+        /// </summary>
+        /// <value>The name.</value>
+        public string Name => ItemSortBy.Studio;
+
+        /// <summary>
         /// Compares the specified x.
         /// </summary>
         /// <param name="x">The x.</param>
@@ -28,13 +37,7 @@ namespace Emby.Server.Implementations.Sorting
                 throw new ArgumentNullException(nameof(y));
             }
 
-            return AlphanumComparator.CompareValues(x.Studios.FirstOrDefault() ?? string.Empty, y.Studios.FirstOrDefault() ?? string.Empty);
+            return AlphanumericComparator.CompareValues(x.Studios.FirstOrDefault(), y.Studios.FirstOrDefault());
         }
-
-        /// <summary>
-        /// Gets the name.
-        /// </summary>
-        /// <value>The name.</value>
-        public string Name => ItemSortBy.Studio;
     }
 }