Fix compiler warnings related to nullability in Files module

Backbone.sln.DotSettings

@@ -36,6 +36,7 @@
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=ecdsa/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=enrichers/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=firebase/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=Iddict/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=inexistent/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=Mediat/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=Onboarded/@EntryIndexedValue">True</s:Boolean>

BuildingBlocks/src/BuildingBlocks.Infrastructure/Persistence/BlobStorage/BlobStorageServiceCollectionExtensions.cs

@@ -29,7 +29,7 @@ public static void AddBlobStorage(this IServiceCollection services, BlobStorageO
             services.AddGoogleCloudStorage(googleCloudStorageOptions =>
             {
                 googleCloudStorageOptions.GcpAuthJson = options.ConnectionInfo;
-                googleCloudStorageOptions.BucketName = options.Container!;
+                googleCloudStorageOptions.BucketName = options.Container;
             });
         else if (options.CloudProvider.IsNullOrEmpty())
             throw new NotSupportedException("No cloud provider was specified.");
@@ -41,15 +41,9 @@ public static void AddBlobStorage(this IServiceCollection services, BlobStorageO
 
 public class BlobStorageOptions
 {
-    /** 
-     * This property will never be null as it makes no sense, but is marked as nullable due to how AddBlobStorage method uses BlobStorageOptions.
-     */
-    public string? CloudProvider { get; set; }
+    public string CloudProvider { get; set; } = null!;
 
-    /**
-     * This property will never be null as it makes no sense, but is marked as nullable due to how AddBlobStorage method uses BlobStorageOptions.
-     */
-    public string? Container { get; set; }
+    public string Container { get; set; } = null!;
 
-    public string? ConnectionInfo { get; set; }
+    public string? ConnectionInfo { get; set; } = null;
 }

Modules/Files/src/Files.Application/Files/DTOs/FileMetadataDTO.cs

@@ -8,29 +8,29 @@ namespace Backbone.Modules.Files.Application.Files.DTOs;
 
 public class FileMetadataDTO : IHaveCustomMapping
 {
-    public FileId Id { get; set; }
+    public required FileId Id { get; set; }
 
-    public DateTime CreatedAt { get; set; }
-    public IdentityAddress CreatedBy { get; set; }
-    public DeviceId CreatedByDevice { get; set; }
+    public required DateTime CreatedAt { get; set; }
+    public required IdentityAddress CreatedBy { get; set; }
+    public required DeviceId CreatedByDevice { get; set; }
 
-    public DateTime ModifiedAt { get; set; }
-    public IdentityAddress ModifiedBy { get; set; }
-    public DeviceId ModifiedByDevice { get; set; }
+    public required DateTime ModifiedAt { get; set; }
+    public required IdentityAddress ModifiedBy { get; set; }
+    public required DeviceId ModifiedByDevice { get; set; }
 
     public DateTime? DeletedAt { get; set; }
-    public IdentityAddress DeletedBy { get; set; }
-    public DeviceId DeletedByDevice { get; set; }
+    public IdentityAddress? DeletedBy { get; set; }
+    public DeviceId? DeletedByDevice { get; set; }
 
-    public IdentityAddress Owner { get; set; }
-    public byte[] OwnerSignature { get; set; }
+    public required IdentityAddress Owner { get; set; }
+    public required byte[] OwnerSignature { get; set; }
 
-    public long CipherSize { get; set; }
-    public byte[] CipherHash { get; set; }
+    public required long CipherSize { get; set; }
+    public required byte[] CipherHash { get; set; }
 
-    public DateTime ExpiresAt { get; set; }
+    public required DateTime ExpiresAt { get; set; }
 
-    public byte[] EncryptedProperties { get; set; }
+    public required byte[] EncryptedProperties { get; set; }
 
     public void CreateMappings(Profile configuration)
     {

Modules/Files/src/Files.Application/Files/Queries/GetFileContent/GetFileContentQuery.cs

@@ -5,5 +5,5 @@ namespace Backbone.Modules.Files.Application.Files.Queries.GetFileContent;
 
 public class GetFileContentQuery : IRequest<GetFileContentResponse>
 {
-    public FileId Id { get; set; }
+    public required FileId Id { get; set; }
 }

Modules/Files/src/Files.Application/Files/Queries/GetFileContent/GetFileContentResponse.cs

@@ -2,5 +2,5 @@
 
 public class GetFileContentResponse
 {
-    public byte[] FileContent { get; set; }
+    public required byte[] FileContent { get; set; }
 }

Modules/Files/src/Files.Application/Files/Queries/GetFileMetadata/GetFileMetadataQuery.cs

@@ -6,5 +6,5 @@ namespace Backbone.Modules.Files.Application.Files.Queries.GetFileMetadata;
 
 public class GetFileMetadataQuery : IRequest<FileMetadataDTO>
 {
-    public FileId Id { get; set; }
+    public required FileId Id { get; set; }
 }

Modules/Files/src/Files.Application/Infrastructure/Persistence/BlobOptions.cs

@@ -2,5 +2,5 @@
 
 public class BlobOptions
 {
-    public string RootFolder { get; set; }
+    public required string RootFolder { get; set; }
 }

Modules/Files/src/Files.Application/Infrastructure/Persistence/Repository/IFilesRepository.cs

@@ -7,7 +7,7 @@
 namespace Backbone.Modules.Files.Application.Infrastructure.Persistence.Repository;
 public interface IFilesRepository
 {
-    Task<File> Find(FileId id, CancellationToken cancellationToken, bool track = false, bool fillContent = true);
+    Task<File?> Find(FileId id, CancellationToken cancellationToken, bool track = false, bool fillContent = true);
     Task<DbPaginationResult<File>> FindFilesByCreator(IEnumerable<FileId> fileIds, IdentityAddress creatorAddress, PaginationFilter paginationFilter, CancellationToken cancellationToken);
     Task Add(File file, CancellationToken cancellationToken);
 }

Modules/Files/src/Files.Domain/Entities/File.cs

@@ -6,9 +6,20 @@ namespace Backbone.Modules.Files.Domain.Entities;
 
 public class File
 {
-#pragma warning disable CS8618
-    private File() { }
-#pragma warning restore CS8618
+    private File()
+    {
+        // This constructor is for EF Core only; initializing the properties with null is therefore not a problem
+        Id = null!;
+        CreatedBy = null!;
+        CreatedByDevice = null!;
+        ModifiedBy = null!;
+        ModifiedByDevice = null!;
+        Owner = null!;
+        OwnerSignature = null!;
+        CipherHash = null!;
+        Content = null!;
+        EncryptedProperties = null!;
+    }
 
     public File(IdentityAddress createdBy, DeviceId createdByDevice, IdentityAddress owner, byte[] ownerSignature, byte[] cipherHash, byte[] content, long cipherSize, DateTime expiresAt, byte[] encryptedProperties)
     {

Modules/Files/src/Files.Infrastructure/Files.Infrastructure.csproj

@@ -4,12 +4,6 @@
 	  <Nullable>enable</Nullable>
 	</PropertyGroup>
 
-	<ItemGroup>
-		<Compile Remove="Persistence\Migrations\**" />
-		<EmbeddedResource Remove="Persistence\Migrations\**" />
-		<None Remove="Persistence\Migrations\**" />
-	</ItemGroup>
-
 	<ItemGroup>
 		<PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.0" />
 		<PackageReference Include="Microsoft.EntityFrameworkCore.SqlServer" Version="8.0.0" />

Modules/Files/src/Files.Infrastructure/Persistence/Database/EntityTypeConfigurations/FileEntityTypeConfiguration.cs

@@ -4,7 +4,7 @@
 
 namespace Backbone.Modules.Files.Infrastructure.Persistence.Database.EntityTypeConfigurations;
 
-public class FileEntityTypeConfiguration : IEntityTypeConfiguration<Domain.Entities.File>
+public class FileEntityTypeConfiguration : IEntityTypeConfiguration<File>
 {
     public void Configure(EntityTypeBuilder<File> builder)
     {

Modules/Files/src/Files.Infrastructure/Persistence/Database/FilesDbContext.cs

@@ -15,7 +15,7 @@ public FilesDbContext(DbContextOptions<FilesDbContext> options) : base(options)
 
     public FilesDbContext(DbContextOptions<FilesDbContext> options, IServiceProvider serviceProvider) : base(options, serviceProvider) { }
 
-    public DbSet<File> FileMetadata { get; set; }
+    public DbSet<File> FileMetadata { get; set; } = null!;
 
     protected override void ConfigureConventions(ModelConfigurationBuilder configurationBuilder)
     {

Modules/Files/src/Files.Infrastructure/Persistence/Database/IServiceCollectionExtensions.cs

@@ -15,7 +15,7 @@ public static class IServiceCollectionExtensions
     public static void AddDatabase(this IServiceCollection services, Action<DbOptions> setupOptions)
     {
         var options = new DbOptions();
-        setupOptions?.Invoke(options);
+        setupOptions.Invoke(options);
 
         services.AddDatabase(options);
     }
@@ -56,8 +56,8 @@ public static void AddDatabase(this IServiceCollection services, DbOptions optio
 
 public class DbOptions
 {
-    public string Provider { get; set; }
-    public string DbConnectionString { get; set; }
+    public string Provider { get; set; } = null!;
+    public string DbConnectionString { get; set; } = null!;
     public RetryOptions RetryOptions { get; set; } = new();
 }
 

Modules/Files/src/Files.Infrastructure/Persistence/Database/Repository/FilesRepository.cs

@@ -38,7 +38,7 @@ public async Task Add(File file, CancellationToken cancellationToken)
 
     }
 
-    public async Task<File> Find(FileId fileId, CancellationToken cancellationToken, bool track = false, bool fillContent = true)
+    public async Task<File?> Find(FileId fileId, CancellationToken cancellationToken, bool track = false, bool fillContent = true)
     {
         var file = await (track ? _files : _readOnlyFiles)
             .WithId(fileId)

Modules/Files/src/Files.Infrastructure/Persistence/Database/ValueConverters/FileIdEntityFrameworkValueConverter.cs

@@ -5,11 +5,11 @@ namespace Backbone.Modules.Files.Infrastructure.Persistence.Database.ValueConver
 
 public class FileIdEntityFrameworkValueConverter : ValueConverter<FileId, string>
 {
-    public FileIdEntityFrameworkValueConverter() : this(null) { }
+    public FileIdEntityFrameworkValueConverter() : this(new ConverterMappingHints()) { }
 
     public FileIdEntityFrameworkValueConverter(ConverterMappingHints mappingHints)
         : base(
-            id => id == null ? null : id.StringValue,
+            id => id.StringValue,
             value => FileId.Parse(value),
             mappingHints
         )

Modules/Files/src/Files.Infrastructure/Persistence/IServiceCollectionExtensions.cs

@@ -11,7 +11,7 @@ public static class IServiceCollectionExtensions
     public static void AddPersistence(this IServiceCollection services, Action<PersistenceOptions> setupOptions)
     {
         var options = new PersistenceOptions();
-        setupOptions?.Invoke(options);
+        setupOptions.Invoke(options);
 
         services.AddPersistence(options);
     }

Modules/Files/src/Files.Jobs.SanityCheck/Files.Jobs.SanityCheck.csproj

@@ -1,7 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk.Worker">
 
     <PropertyGroup>
-        <UserSecretsId>dotnet-Files.Jobs.SanityCheck-9f22e8e4-eb64-498c-9599-b971e0419647</UserSecretsId>
         <DockerDefaultTargetOS>Linux</DockerDefaultTargetOS>
         <DockerfileContext>..\..\..\..</DockerfileContext>
         <Nullable>enable</Nullable>

Modules/Files/src/Files.Jobs.SanityCheck/Infrastructure/SanityCheck/SanityCheck.cs

@@ -15,6 +15,8 @@ public SanityCheck(IDataSource dataSource, IReporter reporter)
     {
         _dataSource = dataSource;
         _reporter = reporter;
+        _databaseIds = [];
+        _blobIds = [];
     }
 
     public async Task Run(CancellationToken cancellationToken)

Modules/Files/src/Files.Jobs.SanityCheck/Worker.cs

@@ -14,6 +14,10 @@ public Worker(IHostApplicationLifetime host, IServiceScopeFactory serviceScopeFa
     {
         _host = host;
         _serviceScopeFactory = serviceScopeFactory;
+
+        // the following fields are initialized in StartAsync, which is always called before any other method
+        _dataSource = null!;
+        _reporter = null!;
     }
 
     public async Task StartAsync(CancellationToken cancellationToken)
@@ -33,7 +37,7 @@ public Task StopAsync(CancellationToken cancellationToken)
         return Task.CompletedTask;
     }
 
-    public async Task RunSanityCheck(CancellationToken cancellationToken)
+    private async Task RunSanityCheck(CancellationToken cancellationToken)
     {
         var sanityCheck = new Infrastructure.SanityCheck.SanityCheck(_dataSource, _reporter);
 

Modules/Files/test/Files.Application.Tests/TestData.cs

@@ -31,9 +31,9 @@ public static class Devices
 
     public static class Payloads
     {
-        public static readonly byte[] EMPTY = Array.Empty<byte>();
-        public static readonly byte[] PAYLOAD_1 = { 1, 1, 1 };
-        public static readonly byte[] PAYLOAD_2 = { 2, 2, 2 };
-        public static readonly byte[] PAYLOAD_3 = { 3, 3, 3 };
+        public static readonly byte[] EMPTY = [];
+        public static readonly byte[] PAYLOAD_1 = [1, 1, 1];
+        public static readonly byte[] PAYLOAD_2 = [2, 2, 2];
+        public static readonly byte[] PAYLOAD_3 = [3, 3, 3];
     }
 }

Modules/Files/test/Files.Jobs.SanityCheck.Tests/Infrastructure/DataSource/FakeDataSource.cs

@@ -5,8 +5,8 @@ namespace Backbone.Modules.Files.Jobs.SanityCheck.Tests.Infrastructure.DataSourc
 
 public class FakeDataSource : IDataSource
 {
-    public List<FileId> DatabaseIds { get; } = new();
-    public List<string> BlobIds { get; } = new();
+    public List<FileId> DatabaseIds { get; } = [];
+    public List<string> BlobIds { get; } = [];
 
     public Task<IEnumerable<string>> GetBlobIdsAsync(CancellationToken cancellationToken)
     {