Enable nullable for Jellyfin.Data and remove unnecessary attributes

Emby.Drawing/ImageProcessor.cs

@@ -352,8 +352,13 @@ namespace Emby.Drawing
         }
 
         /// <inheritdoc />
-        public string GetImageCacheTag(User user)
+        public string? GetImageCacheTag(User user)
         {
+            if (user.ProfileImage == null)
+            {
+                return null;
+            }
+
             return (user.ProfileImage.Path + user.ProfileImage.LastModified.Ticks).GetMD5()
                 .ToString("N", CultureInfo.InvariantCulture);
         }

Jellyfin.Api/Controllers/ImageController.cs

@@ -196,6 +196,11 @@ namespace Jellyfin.Api.Controllers
             }
 
             var user = _userManager.GetUserById(userId);
+            if (user?.ProfileImage == null)
+            {
+                return NoContent();
+            }
+
             try
             {
                 System.IO.File.Delete(user.ProfileImage.Path);
@@ -235,6 +240,11 @@ namespace Jellyfin.Api.Controllers
             }
 
             var user = _userManager.GetUserById(userId);
+            if (user?.ProfileImage == null)
+            {
+                return NoContent();
+            }
+
             try
             {
                 System.IO.File.Delete(user.ProfileImage.Path);
@@ -1469,7 +1479,7 @@ namespace Jellyfin.Api.Controllers
             [FromQuery] int? imageIndex)
         {
             var user = _userManager.GetUserById(userId);
-            if (user == null)
+            if (user?.ProfileImage == null)
             {
                 return NotFound();
             }

Jellyfin.Api/Controllers/StartupController.cs

@@ -132,7 +132,10 @@ namespace Jellyfin.Api.Controllers
         {
             var user = _userManager.Users.First();
 
-            user.Username = startupUserDto.Name;
+            if (startupUserDto.Name != null)
+            {
+                user.Username = startupUserDto.Name;
+            }
 
             await _userManager.UpdateUserAsync(user).ConfigureAwait(false);
 

Jellyfin.Data/Entities/AccessSchedule.cs

@@ -1,5 +1,4 @@
 using System;
-using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
 using System.Xml.Serialization;
 using Jellyfin.Data.Enums;
@@ -33,8 +32,6 @@ namespace Jellyfin.Data.Entities
         /// Identity, Indexed, Required.
         /// </remarks>
         [XmlIgnore]
-        [Key]
-        [Required]
         [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
         public int Id { get; protected set; }
 
@@ -42,28 +39,24 @@ namespace Jellyfin.Data.Entities
         /// Gets or sets the id of the associated user.
         /// </summary>
         [XmlIgnore]
-        [Required]
         public Guid UserId { get; protected set; }
 
         /// <summary>
         /// Gets or sets the day of week.
         /// </summary>
         /// <value>The day of week.</value>
-        [Required]
         public DynamicDayOfWeek DayOfWeek { get; set; }
 
         /// <summary>
         /// Gets or sets the start hour.
         /// </summary>
         /// <value>The start hour.</value>
-        [Required]
         public double StartHour { get; set; }
 
         /// <summary>
         /// Gets or sets the end hour.
         /// </summary>
         /// <value>The end hour.</value>
-        [Required]
         public double EndHour { get; set; }
 
         /// <summary>

Jellyfin.Data/Entities/ActivityLog.cs

@@ -50,7 +50,6 @@ namespace Jellyfin.Data.Entities
         /// <remarks>
         /// Required, Max length = 512.
         /// </remarks>
-        [Required]
         [MaxLength(512)]
         [StringLength(512)]
         public string Name { get; set; }
@@ -63,7 +62,7 @@ namespace Jellyfin.Data.Entities
         /// </remarks>
         [MaxLength(512)]
         [StringLength(512)]
-        public string Overview { get; set; }
+        public string? Overview { get; set; }
 
         /// <summary>
         /// Gets or sets the short overview.
@@ -73,7 +72,7 @@ namespace Jellyfin.Data.Entities
         /// </remarks>
         [MaxLength(512)]
         [StringLength(512)]
-        public string ShortOverview { get; set; }
+        public string? ShortOverview { get; set; }
 
         /// <summary>
         /// Gets or sets the type.
@@ -81,7 +80,6 @@ namespace Jellyfin.Data.Entities
         /// <remarks>
         /// Required, Max length = 256.
         /// </remarks>
-        [Required]
         [MaxLength(256)]
         [StringLength(256)]
         public string Type { get; set; }
@@ -102,7 +100,7 @@ namespace Jellyfin.Data.Entities
         /// </remarks>
         [MaxLength(256)]
         [StringLength(256)]
-        public string ItemId { get; set; }
+        public string? ItemId { get; set; }
 
         /// <summary>
         /// Gets or sets the date created. This should be in UTC.

Jellyfin.Data/Entities/CustomItemDisplayPreferences.cs

@@ -57,7 +57,6 @@ namespace Jellyfin.Data.Entities
         /// <remarks>
         /// Required. Max Length = 32.
         /// </remarks>
-        [Required]
         [MaxLength(32)]
         [StringLength(32)]
         public string Client { get; set; }
@@ -68,7 +67,6 @@ namespace Jellyfin.Data.Entities
         /// <remarks>
         /// Required.
         /// </remarks>
-        [Required]
         public string Key { get; set; }
 
         /// <summary>
@@ -77,7 +75,6 @@ namespace Jellyfin.Data.Entities
         /// <remarks>
         /// Required.
         /// </remarks>
-        [Required]
         public string Value { get; set; }
     }
 }

Jellyfin.Data/Entities/DisplayPreferences.cs

@@ -30,8 +30,6 @@ namespace Jellyfin.Data.Entities
             SkipBackwardLength = 10000;
             ScrollDirection = ScrollDirection.Horizontal;
             ChromecastVersion = ChromecastVersion.Stable;
-            DashboardTheme = string.Empty;
-            TvHome = string.Empty;
 
             HomeSections = new HashSet<HomeSection>();
         }
@@ -67,7 +65,6 @@ namespace Jellyfin.Data.Entities
         /// <remarks>
         /// Required. Max Length = 32.
         /// </remarks>
-        [Required]
         [MaxLength(32)]
         [StringLength(32)]
         public string Client { get; set; }
@@ -138,14 +135,14 @@ namespace Jellyfin.Data.Entities
         /// </summary>
         [MaxLength(32)]
         [StringLength(32)]
-        public string DashboardTheme { get; set; }
+        public string? DashboardTheme { get; set; }
 
         /// <summary>
         /// Gets or sets the tv home screen.
         /// </summary>
         [MaxLength(32)]
         [StringLength(32)]
-        public string TvHome { get; set; }
+        public string? TvHome { get; set; }
 
         /// <summary>
         /// Gets or sets the home sections.

Jellyfin.Data/Entities/Group.cs

@@ -46,7 +46,6 @@ namespace Jellyfin.Data.Entities
         /// <remarks>
         /// Required, Max length = 255.
         /// </remarks>
-        [Required]
         [MaxLength(255)]
         [StringLength(255)]
         public string Name { get; set; }

Jellyfin.Data/Entities/HomeSection.cs

@@ -15,7 +15,6 @@ namespace Jellyfin.Data.Entities
         /// <remarks>
         /// Identity. Required.
         /// </remarks>
-        [Key]
         [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
         public int Id { get; protected set; }
 

Jellyfin.Data/Entities/ImageInfo.cs

@@ -39,7 +39,6 @@ namespace Jellyfin.Data.Entities
         /// <remarks>
         /// Required.
         /// </remarks>
-        [Required]
         [MaxLength(512)]
         [StringLength(512)]
         public string Path { get; set; }

Jellyfin.Data/Entities/ItemDisplayPreferences.cs

@@ -59,7 +59,6 @@ namespace Jellyfin.Data.Entities
         /// <remarks>
         /// Required. Max Length = 32.
         /// </remarks>
-        [Required]
         [MaxLength(32)]
         [StringLength(32)]
         public string Client { get; set; }
@@ -99,7 +98,6 @@ namespace Jellyfin.Data.Entities
         /// <remarks>
         /// Required.
         /// </remarks>
-        [Required]
         [MaxLength(64)]
         [StringLength(64)]
         public string SortBy { get; set; }

Jellyfin.Data/Entities/Libraries/Artwork.cs

@@ -44,7 +44,6 @@ namespace Jellyfin.Data.Entities.Libraries
         /// <remarks>
         /// Required, Max length = 65535.
         /// </remarks>
-        [Required]
         [MaxLength(65535)]
         [StringLength(65535)]
         public string Path { get; set; }

Jellyfin.Data/Entities/Libraries/BookMetadata.cs

@@ -1,7 +1,6 @@
 #pragma warning disable CA2227
 
 using System.Collections.Generic;
-using System.ComponentModel.DataAnnotations.Schema;
 using Jellyfin.Data.Interfaces;
 
 namespace Jellyfin.Data.Entities.Libraries
@@ -32,7 +31,6 @@ namespace Jellyfin.Data.Entities.Libraries
         public virtual ICollection<Company> Publishers { get; protected set; }
 
         /// <inheritdoc />
-        [NotMapped]
         public ICollection<Company> Companies => Publishers;
     }
 }

Jellyfin.Data/Entities/Libraries/Chapter.cs

@@ -45,7 +45,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(1024)]
         [StringLength(1024)]
-        public string Name { get; set; }
+        public string? Name { get; set; }
 
         /// <summary>
         /// Gets or sets the language.
@@ -54,7 +54,6 @@ namespace Jellyfin.Data.Entities.Libraries
         /// Required, Min length = 3, Max length = 3
         /// ISO-639-3 3-character language codes.
         /// </remarks>
-        [Required]
         [MinLength(3)]
         [MaxLength(3)]
         [StringLength(3)]

Jellyfin.Data/Entities/Libraries/Collection.cs

@@ -37,7 +37,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(1024)]
         [StringLength(1024)]
-        public string Name { get; set; }
+        public string? Name { get; set; }
 
         /// <inheritdoc />
         [ConcurrencyCheck]

Jellyfin.Data/Entities/Libraries/CollectionItem.cs

@@ -9,6 +9,15 @@ namespace Jellyfin.Data.Entities.Libraries
     /// </summary>
     public class CollectionItem : IHasConcurrencyToken
     {
+        /// <summary>
+        /// Initializes a new instance of the <see cref="CollectionItem"/> class.
+        /// </summary>
+        /// <param name="libraryItem">The library item.</param>
+        public CollectionItem(LibraryItem libraryItem)
+        {
+            LibraryItem = libraryItem;
+        }
+
         /// <summary>
         /// Gets or sets the id.
         /// </summary>
@@ -36,7 +45,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// <remarks>
         /// TODO check if this properly updated Dependant and has the proper principal relationship.
         /// </remarks>
-        public virtual CollectionItem Next { get; set; }
+        public virtual CollectionItem? Next { get; set; }
 
         /// <summary>
         /// Gets or sets the previous item in the collection.
@@ -44,7 +53,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// <remarks>
         /// TODO check if this properly updated Dependant and has the proper principal relationship.
         /// </remarks>
-        public virtual CollectionItem Previous { get; set; }
+        public virtual CollectionItem? Previous { get; set; }
 
         /// <inheritdoc />
         public void OnSavingChanges()

Jellyfin.Data/Entities/Libraries/Company.cs

@@ -18,6 +18,7 @@ namespace Jellyfin.Data.Entities.Libraries
         public Company()
         {
             CompanyMetadata = new HashSet<CompanyMetadata>();
+            ChildCompanies = new HashSet<Company>();
         }
 
         /// <summary>
@@ -44,7 +45,6 @@ namespace Jellyfin.Data.Entities.Libraries
         public virtual ICollection<Company> ChildCompanies { get; protected set; }
 
         /// <inheritdoc />
-        [NotMapped]
         public ICollection<Company> Companies => ChildCompanies;
 
         /// <inheritdoc />

Jellyfin.Data/Entities/Libraries/CompanyMetadata.cs

@@ -24,7 +24,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(65535)]
         [StringLength(65535)]
-        public string Description { get; set; }
+        public string? Description { get; set; }
 
         /// <summary>
         /// Gets or sets the headquarters.
@@ -34,7 +34,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(255)]
         [StringLength(255)]
-        public string Headquarters { get; set; }
+        public string? Headquarters { get; set; }
 
         /// <summary>
         /// Gets or sets the country code.
@@ -44,7 +44,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(2)]
         [StringLength(2)]
-        public string Country { get; set; }
+        public string? Country { get; set; }
 
         /// <summary>
         /// Gets or sets the homepage.
@@ -54,6 +54,6 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(1024)]
         [StringLength(1024)]
-        public string Homepage { get; set; }
+        public string? Homepage { get; set; }
     }
 }

Jellyfin.Data/Entities/Libraries/CustomItemMetadata.cs

@@ -1,5 +1,3 @@
-using System;
-
 namespace Jellyfin.Data.Entities.Libraries
 {
     /// <summary>

Jellyfin.Data/Entities/Libraries/EpisodeMetadata.cs

@@ -24,7 +24,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(1024)]
         [StringLength(1024)]
-        public string Outline { get; set; }
+        public string? Outline { get; set; }
 
         /// <summary>
         /// Gets or sets the plot.
@@ -34,7 +34,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(65535)]
         [StringLength(65535)]
-        public string Plot { get; set; }
+        public string? Plot { get; set; }
 
         /// <summary>
         /// Gets or sets the tagline.
@@ -44,6 +44,6 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(1024)]
         [StringLength(1024)]
-        public string Tagline { get; set; }
+        public string? Tagline { get; set; }
     }
 }

Jellyfin.Data/Entities/Libraries/Genre.cs

@@ -33,7 +33,6 @@ namespace Jellyfin.Data.Entities.Libraries
         /// <remarks>
         /// Indexed, Required, Max length = 255.
         /// </remarks>
-        [Required]
         [MaxLength(255)]
         [StringLength(255)]
         public string Name { get; set; }

Jellyfin.Data/Entities/Libraries/ItemMetadata.cs

@@ -57,7 +57,6 @@ namespace Jellyfin.Data.Entities.Libraries
         /// <remarks>
         /// Required, Max length = 1024.
         /// </remarks>
-        [Required]
         [MaxLength(1024)]
         [StringLength(1024)]
         public string Title { get; set; }
@@ -70,7 +69,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(1024)]
         [StringLength(1024)]
-        public string OriginalTitle { get; set; }
+        public string? OriginalTitle { get; set; }
 
         /// <summary>
         /// Gets or sets the sort title.
@@ -80,7 +79,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(1024)]
         [StringLength(1024)]
-        public string SortTitle { get; set; }
+        public string? SortTitle { get; set; }
 
         /// <summary>
         /// Gets or sets the language.
@@ -89,7 +88,6 @@ namespace Jellyfin.Data.Entities.Libraries
         /// Required, Min length = 3, Max length = 3.
         /// ISO-639-3 3-character language codes.
         /// </remarks>
-        [Required]
         [MinLength(3)]
         [MaxLength(3)]
         [StringLength(3)]

Jellyfin.Data/Entities/Libraries/Library.cs

@@ -1,4 +1,3 @@
-using System;
 using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
 using Jellyfin.Data.Interfaces;
@@ -14,14 +13,11 @@ namespace Jellyfin.Data.Entities.Libraries
         /// Initializes a new instance of the <see cref="Library"/> class.
         /// </summary>
         /// <param name="name">The name of the library.</param>
-        public Library(string name)
+        /// <param name="path">The path of the library.</param>
+        public Library(string name, string path)
         {
-            if (string.IsNullOrWhiteSpace(name))
-            {
-                throw new ArgumentNullException(nameof(name));
-            }
-
             Name = name;
+            Path = path;
         }
 
         /// <summary>
@@ -39,7 +35,6 @@ namespace Jellyfin.Data.Entities.Libraries
         /// <remarks>
         /// Required, Max length = 128.
         /// </remarks>
-        [Required]
         [MaxLength(128)]
         [StringLength(128)]
         public string Name { get; set; }
@@ -50,7 +45,6 @@ namespace Jellyfin.Data.Entities.Libraries
         /// <remarks>
         /// Required.
         /// </remarks>
-        [Required]
         public string Path { get; set; }
 
         /// <inheritdoc />

Jellyfin.Data/Entities/Libraries/LibraryItem.cs

@@ -44,7 +44,6 @@ namespace Jellyfin.Data.Entities.Libraries
         /// <remarks>
         /// Required.
         /// </remarks>
-        [Required]
         public virtual Library Library { get; set; }
 
         /// <inheritdoc />

Jellyfin.Data/Entities/Libraries/MediaFile.cs

@@ -47,7 +47,6 @@ namespace Jellyfin.Data.Entities.Libraries
         /// <remarks>
         /// Required, Max length = 65535.
         /// </remarks>
-        [Required]
         [MaxLength(65535)]
         [StringLength(65535)]
         public string Path { get; set; }

Jellyfin.Data/Entities/Libraries/MetadataProvider.cs

@@ -39,7 +39,6 @@ namespace Jellyfin.Data.Entities.Libraries
         /// <remarks>
         /// Required, Max length = 1024.
         /// </remarks>
-        [Required]
         [MaxLength(1024)]
         [StringLength(1024)]
         public string Name { get; set; }

Jellyfin.Data/Entities/Libraries/MetadataProviderId.cs

@@ -14,7 +14,8 @@ namespace Jellyfin.Data.Entities.Libraries
         /// Initializes a new instance of the <see cref="MetadataProviderId"/> class.
         /// </summary>
         /// <param name="providerId">The provider id.</param>
-        public MetadataProviderId(string providerId)
+        /// <param name="metadataProvider">The metadata provider.</param>
+        public MetadataProviderId(string providerId, MetadataProvider metadataProvider)
         {
             if (string.IsNullOrEmpty(providerId))
             {
@@ -22,6 +23,7 @@ namespace Jellyfin.Data.Entities.Libraries
             }
 
             ProviderId = providerId;
+            MetadataProvider = metadataProvider;
         }
 
         /// <summary>
@@ -39,7 +41,6 @@ namespace Jellyfin.Data.Entities.Libraries
         /// <remarks>
         /// Required, Max length = 255.
         /// </remarks>
-        [Required]
         [MaxLength(255)]
         [StringLength(255)]
         public string ProviderId { get; set; }

Jellyfin.Data/Entities/Libraries/MovieMetadata.cs

@@ -2,7 +2,6 @@
 
 using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
-using System.ComponentModel.DataAnnotations.Schema;
 using Jellyfin.Data.Interfaces;
 
 namespace Jellyfin.Data.Entities.Libraries
@@ -30,7 +29,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(1024)]
         [StringLength(1024)]
-        public string Outline { get; set; }
+        public string? Outline { get; set; }
 
         /// <summary>
         /// Gets or sets the tagline.
@@ -40,7 +39,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(1024)]
         [StringLength(1024)]
-        public string Tagline { get; set; }
+        public string? Tagline { get; set; }
 
         /// <summary>
         /// Gets or sets the plot.
@@ -50,7 +49,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(65535)]
         [StringLength(65535)]
-        public string Plot { get; set; }
+        public string? Plot { get; set; }
 
         /// <summary>
         /// Gets or sets the country code.
@@ -60,7 +59,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(2)]
         [StringLength(2)]
-        public string Country { get; set; }
+        public string? Country { get; set; }
 
         /// <summary>
         /// Gets or sets the studios that produced this movie.
@@ -68,7 +67,6 @@ namespace Jellyfin.Data.Entities.Libraries
         public virtual ICollection<Company> Studios { get; protected set; }
 
         /// <inheritdoc />
-        [NotMapped]
         public ICollection<Company> Companies => Studios;
     }
 }

Jellyfin.Data/Entities/Libraries/MusicAlbumMetadata.cs

@@ -28,7 +28,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(255)]
         [StringLength(255)]
-        public string Barcode { get; set; }
+        public string? Barcode { get; set; }
 
         /// <summary>
         /// Gets or sets the label number.
@@ -38,7 +38,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(255)]
         [StringLength(255)]
-        public string LabelNumber { get; set; }
+        public string? LabelNumber { get; set; }
 
         /// <summary>
         /// Gets or sets the country code.
@@ -48,7 +48,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(2)]
         [StringLength(2)]
-        public string Country { get; set; }
+        public string? Country { get; set; }
 
         /// <summary>
         /// Gets or sets a collection containing the labels.

Jellyfin.Data/Entities/Libraries/Person.cs

@@ -46,7 +46,6 @@ namespace Jellyfin.Data.Entities.Libraries
         /// <remarks>
         /// Required, Max length = 1024.
         /// </remarks>
-        [Required]
         [MaxLength(1024)]
         [StringLength(1024)]
         public string Name { get; set; }
@@ -59,7 +58,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(256)]
         [StringLength(256)]
-        public string SourceId { get; set; }
+        public string? SourceId { get; set; }
 
         /// <summary>
         /// Gets or sets the date added.

Jellyfin.Data/Entities/Libraries/PersonRole.cs

@@ -17,9 +17,12 @@ namespace Jellyfin.Data.Entities.Libraries
         /// Initializes a new instance of the <see cref="PersonRole"/> class.
         /// </summary>
         /// <param name="type">The role type.</param>
-        public PersonRole(PersonRoleType type)
+        /// <param name="person">The person.</param>
+        public PersonRole(PersonRoleType type, Person person)
         {
             Type = type;
+            Person = person;
+            Artwork = new HashSet<Artwork>();
             Sources = new HashSet<MetadataProviderId>();
         }
 
@@ -40,7 +43,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(1024)]
         [StringLength(1024)]
-        public string Role { get; set; }
+        public string? Role { get; set; }
 
         /// <summary>
         /// Gets or sets the person's role type.
@@ -60,7 +63,6 @@ namespace Jellyfin.Data.Entities.Libraries
         /// <remarks>
         /// Required.
         /// </remarks>
-        [Required]
         public virtual Person Person { get; set; }
 
         /// <inheritdoc />

Jellyfin.Data/Entities/Libraries/Rating.cs

@@ -48,7 +48,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// Gets or sets the rating type.
         /// If this is <c>null</c> it's the internal user rating.
         /// </summary>
-        public virtual RatingSource RatingType { get; set; }
+        public virtual RatingSource? RatingType { get; set; }
 
         /// <inheritdoc />
         public void OnSavingChanges()

Jellyfin.Data/Entities/Libraries/RatingSource.cs

@@ -37,7 +37,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(1024)]
         [StringLength(1024)]
-        public string Name { get; set; }
+        public string? Name { get; set; }
 
         /// <summary>
         /// Gets or sets the minimum value.
@@ -62,7 +62,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// <summary>
         /// Gets or sets the metadata source.
         /// </summary>
-        public virtual MetadataProviderId Source { get; set; }
+        public virtual MetadataProviderId? Source { get; set; }
 
         /// <inheritdoc />
         public void OnSavingChanges()

Jellyfin.Data/Entities/Libraries/Release.cs

@@ -45,7 +45,6 @@ namespace Jellyfin.Data.Entities.Libraries
         /// <remarks>
         /// Required, Max length = 1024.
         /// </remarks>
-        [Required]
         [MaxLength(1024)]
         [StringLength(1024)]
         public string Name { get; set; }

Jellyfin.Data/Entities/Libraries/SeasonMetadata.cs

@@ -24,6 +24,6 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(1024)]
         [StringLength(1024)]
-        public string Outline { get; set; }
+        public string? Outline { get; set; }
     }
 }

Jellyfin.Data/Entities/Libraries/SeriesMetadata.cs

@@ -30,7 +30,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(1024)]
         [StringLength(1024)]
-        public string Outline { get; set; }
+        public string? Outline { get; set; }
 
         /// <summary>
         /// Gets or sets the plot.
@@ -40,7 +40,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(65535)]
         [StringLength(65535)]
-        public string Plot { get; set; }
+        public string? Plot { get; set; }
 
         /// <summary>
         /// Gets or sets the tagline.
@@ -50,7 +50,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(1024)]
         [StringLength(1024)]
-        public string Tagline { get; set; }
+        public string? Tagline { get; set; }
 
         /// <summary>
         /// Gets or sets the country code.
@@ -60,7 +60,7 @@ namespace Jellyfin.Data.Entities.Libraries
         /// </remarks>
         [MaxLength(2)]
         [StringLength(2)]
-        public string Country { get; set; }
+        public string? Country { get; set; }
 
         /// <summary>
         /// Gets or sets a collection containing the networks.
@@ -68,7 +68,6 @@ namespace Jellyfin.Data.Entities.Libraries
         public virtual ICollection<Company> Networks { get; protected set; }
 
         /// <inheritdoc />
-        [NotMapped]
         public ICollection<Company> Companies => Networks;
     }
 }

Jellyfin.Data/Entities/Preference.cs

@@ -46,7 +46,6 @@ namespace Jellyfin.Data.Entities
         /// <remarks>
         /// Required, Max length = 65535.
         /// </remarks>
-        [Required]
         [MaxLength(65535)]
         [StringLength(65535)]
         public string Value { get; set; }

Jellyfin.Data/Entities/User.cs

@@ -51,6 +51,7 @@ namespace Jellyfin.Data.Entities
             PasswordResetProviderId = passwordResetProviderId;
 
             AccessSchedules = new HashSet<AccessSchedule>();
+            DisplayPreferences = new HashSet<DisplayPreferences>();
             ItemDisplayPreferences = new HashSet<ItemDisplayPreferences>();
             // Groups = new HashSet<Group>();
             Permissions = new HashSet<Permission>();
@@ -92,7 +93,6 @@ namespace Jellyfin.Data.Entities
         /// <remarks>
         /// Required, Max length = 255.
         /// </remarks>
-        [Required]
         [MaxLength(255)]
         [StringLength(255)]
         public string Username { get; set; }
@@ -105,7 +105,7 @@ namespace Jellyfin.Data.Entities
         /// </remarks>
         [MaxLength(65535)]
         [StringLength(65535)]
-        public string Password { get; set; }
+        public string? Password { get; set; }
 
         /// <summary>
         /// Gets or sets the user's easy password, or <c>null</c> if none is set.
@@ -115,7 +115,7 @@ namespace Jellyfin.Data.Entities
         /// </remarks>
         [MaxLength(65535)]
         [StringLength(65535)]
-        public string EasyPassword { get; set; }
+        public string? EasyPassword { get; set; }
 
         /// <summary>
         /// Gets or sets a value indicating whether the user must update their password.
@@ -133,7 +133,7 @@ namespace Jellyfin.Data.Entities
         /// </remarks>
         [MaxLength(255)]
         [StringLength(255)]
-        public string AudioLanguagePreference { get; set; }
+        public string? AudioLanguagePreference { get; set; }
 
         /// <summary>
         /// Gets or sets the authentication provider id.
@@ -141,7 +141,6 @@ namespace Jellyfin.Data.Entities
         /// <remarks>
         /// Required, Max length = 255.
         /// </remarks>
-        [Required]
         [MaxLength(255)]
         [StringLength(255)]
         public string AuthenticationProviderId { get; set; }
@@ -152,7 +151,6 @@ namespace Jellyfin.Data.Entities
         /// <remarks>
         /// Required, Max length = 255.
         /// </remarks>
-        [Required]
         [MaxLength(255)]
         [StringLength(255)]
         public string PasswordResetProviderId { get; set; }
@@ -209,7 +207,7 @@ namespace Jellyfin.Data.Entities
         /// </remarks>
         [MaxLength(255)]
         [StringLength(255)]
-        public string SubtitleLanguagePreference { get; set; }
+        public string? SubtitleLanguagePreference { get; set; }
 
         /// <summary>
         /// Gets or sets a value indicating whether missing episodes should be displayed.
@@ -304,7 +302,7 @@ namespace Jellyfin.Data.Entities
         /// Gets or sets the user's profile image. Can be <c>null</c>.
         /// </summary>
         // [ForeignKey("UserId")]
-        public virtual ImageInfo ProfileImage { get; set; }
+        public virtual ImageInfo? ProfileImage { get; set; }
 
         /// <summary>
         /// Gets or sets the user's display preferences.
@@ -312,8 +310,7 @@ namespace Jellyfin.Data.Entities
         /// <remarks>
         /// Required.
         /// </remarks>
-        [Required]
+        public virtual ICollection<DisplayPreferences> DisplayPreferences { get; set; }
-        public virtual DisplayPreferences DisplayPreferences { get; set; }
 
         /// <summary>
         /// Gets or sets the level of sync play permissions this user has.

Jellyfin.Data/Jellyfin.Data.csproj

@@ -5,6 +5,7 @@
     <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
     <GenerateDocumentationFile>true</GenerateDocumentationFile>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>
+    <Nullable>enable</Nullable>
     <PublishRepositoryUrl>true</PublishRepositoryUrl>
     <EmbedUntrackedSources>true</EmbedUntrackedSources>
     <IncludeSymbols>true</IncludeSymbols>

Jellyfin.Server.Implementations/Events/Consumers/Session/PlaybackStartLogger.cs

@@ -86,7 +86,7 @@ namespace Jellyfin.Server.Implementations.Events.Consumers.Session
             return name;
         }
 
-        private static string? GetPlaybackNotificationType(string mediaType)
+        private static string GetPlaybackNotificationType(string mediaType)
         {
             if (string.Equals(mediaType, MediaType.Audio, StringComparison.OrdinalIgnoreCase))
             {
@@ -98,7 +98,7 @@ namespace Jellyfin.Server.Implementations.Events.Consumers.Session
                 return NotificationType.VideoPlayback.ToString();
             }
 
-            return null;
+            return "Playback";
         }
     }
 }

Jellyfin.Server.Implementations/Users/UserManager.cs

@@ -184,8 +184,8 @@ namespace Jellyfin.Server.Implementations.Users
 
             var user = new User(
                 name,
-                _defaultAuthenticationProvider.GetType().FullName,
+                _defaultAuthenticationProvider.GetType().FullName!,
-                _defaultPasswordResetProvider.GetType().FullName)
+                _defaultPasswordResetProvider.GetType().FullName!)
             {
                 InternalId = max + 1
             };
@@ -444,7 +444,7 @@ namespace Jellyfin.Server.Implementations.Users
             {
                 var providerId = authenticationProvider.GetType().FullName;
 
-                if (!string.Equals(providerId, user.AuthenticationProviderId, StringComparison.OrdinalIgnoreCase))
+                if (providerId != null && !string.Equals(providerId, user.AuthenticationProviderId, StringComparison.OrdinalIgnoreCase))
                 {
                     user.AuthenticationProviderId = providerId;
                     await UpdateUserAsync(user).ConfigureAwait(false);

Jellyfin.Server/Migrations/Routines/MigrateUserDb.cs

@@ -1,7 +1,5 @@
 using System;
-using System.Globalization;
 using System.IO;
-using System.Linq;
 using Emby.Server.Implementations.Data;
 using Emby.Server.Implementations.Serialization;
 using Jellyfin.Data.Entities;
@@ -104,7 +102,7 @@ namespace Jellyfin.Server.Migrations.Routines
                         _ => policy.LoginAttemptsBeforeLockout
                     };
 
-                    var user = new User(mockup.Name, policy.AuthenticationProviderId, policy.PasswordResetProviderId)
+                    var user = new User(mockup.Name, policy.AuthenticationProviderId!, policy.PasswordResetProviderId!)
                     {
                         Id = entry[1].ReadGuidFromBlob(),
                         InternalId = entry[0].ToInt64(),

MediaBrowser.Controller/Drawing/IImageProcessor.cs

@@ -61,7 +61,7 @@ namespace MediaBrowser.Controller.Drawing
 
         string GetImageCacheTag(BaseItem item, ChapterInfo info);
 
-        string GetImageCacheTag(User user);
+        string? GetImageCacheTag(User user);
 
         /// <summary>
         /// Processes the image.

tests/Jellyfin.Api.Tests/TestHelpers.cs

@@ -26,8 +26,8 @@ namespace Jellyfin.Api.Tests
         {
             var user = new User(
                 "jellyfin",
-                typeof(DefaultAuthenticationProvider).FullName,
+                typeof(DefaultAuthenticationProvider).FullName!,
-                typeof(DefaultPasswordResetProvider).FullName);
+                typeof(DefaultPasswordResetProvider).FullName!);
 
             // Set administrator flag.
             user.SetPermission(PermissionKind.IsAdministrator, role.Equals(UserRoles.Administrator, StringComparison.OrdinalIgnoreCase));