feat(RSADecryptor): FileNotFoundEvent-Methode aktualisiert, um Datei zu erstellen, wenn nicht gefunden

- Kombiniert `Encryptors` und `Decryptors` in `cryptographers` für eine vereinfachte Initialisierung in `OnDeserialized`.

DigitalData.Core.Abstractions/Security/CryptographerExtensions.cs

@@ -0,0 +1,21 @@
+namespace DigitalData.Core.Abstractions.Security
+{
+    public static class CryptographerExtensions
+    {
+        public static IEnumerable<TRSACryptographer> GetByIssuer<TRSACryptographer>(this IEnumerable<TRSACryptographer> cryptographers, string issuer) where TRSACryptographer: IRSACryptographer
+            => cryptographers.Where(c => c.Issuer == issuer);
+
+        public static IEnumerable<TRSACryptographer> GetByAudience<TRSACryptographer>(this IEnumerable<TRSACryptographer> cryptographers, string audience) where TRSACryptographer : IRSACryptographer
+            => cryptographers.Where(c => c.Audience == audience);
+
+        public static TRSACryptographer Get<TRSACryptographer>(this IEnumerable<TRSACryptographer> cryptographers, string issuer, string audience) where TRSACryptographer : IRSACryptographer
+            => cryptographers.Where(c => c.Issuer == issuer && c.Audience == audience).SingleOrDefault()
+            ?? throw new InvalidOperationException($"No {typeof(TRSACryptographer).GetType().Name.TrimStart('I')} found with Issuer: {issuer} and Audience: {audience}.");
+
+        public static bool TryGet<TRSACryptographer>(this IEnumerable<TRSACryptographer> cryptographers, string issuer, string audience, out TRSACryptographer? cryptographer) where TRSACryptographer : IRSACryptographer
+        {
+            cryptographer = cryptographers.SingleOrDefault(c => c.Issuer == issuer && c.Audience == audience);
+            return cryptographer is not null;
+        }
+    }
+}

DigitalData.Core.Abstractions/Security/IAsymCryptService.cs

@@ -1,9 +1,9 @@
 namespace DigitalData.Core.Abstractions.Security
 {
     public interface IAsymCryptService<TParams> : IRSAFactory<TParams>
-    {        
+    {
-         IRSADecryptor this[string key] { get; }
+        public IEnumerable<IRSADecryptor> Decryptors { get; }
 
-        bool TryGetRSADecryptor(string key, out IRSADecryptor? decryptor);
+        public IEnumerable<IRSAEncryptor> Encryptors { get; }
     }
 }

DigitalData.Core.Abstractions/Security/IRSACryptographer.cs

@@ -7,5 +7,15 @@ namespace DigitalData.Core.Abstractions.Security
         public string Pem { get; init; }
 
         public RSAEncryptionPadding Padding { get; init; }
+
+        public string? Directory { get; set; }
+
+        public string? FileName { get; set; }
+
+        public string Issuer { get; init; }
+
+        public string Audience { get; init; }
+
+        public void Init();
     }
 }

DigitalData.Core.Abstractions/Security/IRSADecryptor.cs

@@ -2,11 +2,7 @@
 {
     public interface IRSADecryptor : IRSACryptographer
     {
-        (string Value, Version Version)? VersionedPassword { init; }
+        public bool Encrypt { get; init; }
-
-        Version? PasswordVersion { get; }
-
-        bool HasEncryptedPem { get; }
 
         IRSAEncryptor Encryptor { get; }
 

DigitalData.Core.Abstractions/Security/IRSAFactory.cs

@@ -12,7 +12,5 @@ namespace DigitalData.Core.Abstractions.Security
             PbeEncryptionAlgorithm? pbeEncryptionAlgorithm = null,
             HashAlgorithmName? hashAlgorithmName = null,
             int? iterationCount = null);
-
-        Task<IRSADecryptor> ReadRSADecryptorAsync(string path, Version? version = null, CancellationToken cancellationToken = default);
     }
 }

DigitalData.Core.Security/AsymCryptParams.cs

@@ -1,7 +0,0 @@
-namespace DigitalData.Core.Security
-{
-    public class AsymCryptParams : RSAFactoryParams
-    {
-        public IEnumerable<ReadOrCreateDirectory> ReadOrCreateDirs { get; init; } = new List<ReadOrCreateDirectory>();
-    }
-}

DigitalData.Core.Security/AsymCryptService.cs

@@ -1,4 +1,6 @@
 using DigitalData.Core.Abstractions.Security;
+using DigitalData.Core.Security.Config;
+using DigitalData.Core.Security.Cryptographer;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Options;
 
@@ -6,16 +8,13 @@ namespace DigitalData.Core.Security
 {
     public class AsymCryptService<TAsymCryptParams> : RSAFactory<TAsymCryptParams>, IAsymCryptService<TAsymCryptParams>, IRSAFactory<TAsymCryptParams> where TAsymCryptParams : AsymCryptParams
     {
-        private readonly Dictionary<string, IRSADecryptor> _decryptors;
+        public IEnumerable<IRSADecryptor> Decryptors => _params.Decryptors;
 
-        public IRSADecryptor this[string key] { get => _decryptors[key]; set => _decryptors[key] = value; }
+        public IEnumerable<IRSAEncryptor> Encryptors => _params.Encryptors;
 
         public AsymCryptService(IOptions<TAsymCryptParams> options, ILogger<AsymCryptService<TAsymCryptParams>>? logger = null) : base(options)
         {
-            _decryptors = new();
             logger?.LogInformation("Core.Secrets version: {Version}, Created on: {CreationDate}.", Secrets.Version, Secrets.CreationDate.ToString("dd.MM.yyyy"));
         }
-
-        public bool TryGetRSADecryptor(string key, out IRSADecryptor? decryptor) => _decryptors.TryGetValue(key, out decryptor);
     }
 }

DigitalData.Core.Security/Config/AsymCryptParams.cs

@@ -0,0 +1,59 @@
+using DigitalData.Core.Abstractions.Security;
+
+namespace DigitalData.Core.Security.Config
+{
+    public class AsymCryptParams : RSAFactoryParams
+    {
+        public string Directory { get; init; } = string.Empty;
+
+        /// <summary>
+        /// 0: Issuer - 1: Audience - 2: Type tag - 3: Version
+        /// </summary>
+        public string FileNameFormat { get; init; } = "{0}_-_{1}_-_{2}_-_{3}.pem";
+
+        public string EncryptorTag { get; init; } = "public";
+
+        public string DecryptorTag { get; init; } = "private";
+
+        public string EncryptedDecryptorTag { get; init; } = "enc-private";
+
+        public IEnumerable<IRSADecryptor> Decryptors { get; init; } = new List<IRSADecryptor>();
+
+        public IEnumerable<IRSAEncryptor> Encryptors { get; init; } = new List<IRSAEncryptor>();
+        
+        private string TypeTagOf(IRSACryptographer crypt)
+        {
+            if (crypt is IRSAEncryptor)
+                return EncryptorTag;
+            else if (crypt is IRSADecryptor decryptor)
+                return decryptor.Encrypt ? EncryptedDecryptorTag : DecryptorTag;
+            else
+                throw new InvalidOperationException(
+                    "Unknown cryptographer type. The crypt parameter must be either IRSAEncryptor or IRSADecryptor.");
+        }
+
+        public override void OnDeserialized()
+        {
+            base.OnDeserialized();
+
+            var cryptographers = Encryptors.Cast<IRSACryptographer>().Concat(Decryptors.Cast<IRSACryptographer>());
+
+            foreach (var crypt in cryptographers)
+            {
+                // set default path
+                if (crypt.Pem is null)
+                {
+                    crypt.Directory ??= Directory;
+                    crypt.FileName ??= string.Format(
+                            FileNameFormat,
+                            crypt.Issuer,
+                            crypt.Audience,
+                            TypeTagOf(crypt),
+                            Secrets.Version);
+                }
+
+                crypt.Init();
+            }
+        }
+    }
+}

DigitalData.Core.Security/Config/RSAFactoryParams.cs

@@ -0,0 +1,27 @@
+using System.Security.Cryptography;
+using System.Text.Json.Serialization;
+
+namespace DigitalData.Core.Security.Config
+{
+    public class RSAFactoryParams : IJsonOnDeserialized
+    {
+        public int KeySizeInBits { get; init; } = 2048;
+
+        public string PbePassword { internal get; init; } = Secrets.PBE_PASSWORD;
+
+        public PbeEncryptionAlgorithm PbeEncryptionAlgorithm { get; init; } = PbeEncryptionAlgorithm.Aes256Cbc;
+
+        public HashAlgorithmName PbeHashAlgorithmName { get; init; } = HashAlgorithmName.SHA256;
+
+        public int PbeIterationCount { get; init; } = 100_000;
+
+        public string EncryptedPrivateKeyPemLabel { get; init; } = "ENCRYPTED PRIVATE KEY";
+
+        private PbeParameters? _pbeParameters;
+
+        [JsonIgnore]
+        public PbeParameters PbeParameters => _pbeParameters!;
+
+        public virtual void OnDeserialized() => _pbeParameters = new PbeParameters(PbeEncryptionAlgorithm, PbeHashAlgorithmName, PbeIterationCount);
+    }
+}

DigitalData.Core.Security/Cryptographer/RSACryptographer.cs

@@ -0,0 +1,53 @@
+using DigitalData.Core.Abstractions.Security;
+using System.Security.Cryptography;
+
+namespace DigitalData.Core.Security.Cryptographer
+{
+    public class RSACryptographer : IRSACryptographer
+    {
+        protected string? _pem;
+
+        public string Pem
+        {
+            get => _pem
+                ?? throw new InvalidOperationException($"Pem is not initialized. Please ensure that the PEM is set or properly loaded from the file. Issuer: {Issuer}, Audience: {Audience}.");
+            init => _pem = value;
+        }
+
+        public string? PemPath => FileName is null ? null : Path.Combine(Directory ?? string.Empty, FileName);
+
+        public string? Directory { get; set; }
+
+        public string? FileName { get; set; }
+
+        public RSAEncryptionPadding Padding { get; init; } = RSAEncryptionPadding.OaepSHA256;
+
+        protected virtual RSA RSA { get; } = RSA.Create();
+
+        public string Issuer { get; init; } = string.Empty;
+
+        public string Audience { get; init; } = string.Empty;
+
+        internal RSACryptographer() { }
+        
+        public virtual void UnableToInitPemEvent() => throw new InvalidOperationException(
+            $"Pem is not initialized and pem file is null. Issuer is {Issuer} and audience {Audience}.");
+
+        public virtual void FileNotFoundEvent() => throw new FileNotFoundException(
+            $"Pem is not initialized and pem file is not found in {PemPath}. Issuer is {Issuer} and audience {Audience}.");
+
+        // TODO: make file read asynchronous, consider multiple routing
+        public virtual void Init()
+        {
+            if(_pem is null)
+            {
+                if(PemPath is null)
+                    UnableToInitPemEvent();
+                if (File.Exists(PemPath))
+                    _pem = File.ReadAllText(PemPath);
+                else
+                    FileNotFoundEvent();
+            }
+        }
+    }
+}

DigitalData.Core.Security/Cryptographer/RSADecryptor.cs

@@ -0,0 +1,55 @@
+using DigitalData.Core.Abstractions.Security;
+using DigitalData.Core.Security.Config;
+using DigitalData.Core.Security.Extensions;
+using System.Security.Cryptography;
+
+namespace DigitalData.Core.Security.Cryptographer
+{
+    public class RSADecryptor : RSACryptographer, IRSADecryptor, IRSACryptographer
+    {
+        public bool Encrypt { get; init; }
+
+        private readonly Lazy<IRSAEncryptor> _lazyEncryptor;
+
+        public IRSAEncryptor Encryptor => _lazyEncryptor.Value;
+
+        public RSADecryptor()
+        {
+            _lazyEncryptor = new(() => new RSAEncryptor()
+            {
+                Pem = RSA.ExportRSAPublicKeyPem(),
+                Padding = Padding
+            });
+        }
+
+        public byte[] Decrypt(byte[] data) => RSA.Decrypt(data, Padding);
+
+        public string Decrypt(string data) => RSA.Decrypt(data.Base64ToByte(), Padding).BytesToString();
+
+        public override void Init()
+        {
+            base.Init();
+            if (Encrypt)
+                RSA.ImportFromEncryptedPem(Pem, Secrets.PBE_PASSWORD.AsSpan());
+            else
+                RSA.ImportFromPem(Pem);
+        }
+
+        public override void FileNotFoundEvent()
+        {
+            var new_decryptor = new RSADecryptor()
+            {
+                Pem = RSAFactory<RSAFactoryParams>.Static.CreateRSAPrivateKeyPem(),
+                Encrypt = Encrypt
+            };
+
+            _pem = new_decryptor.Pem;
+
+            if (PemPath is not null)
+                Task.Run(async () =>
+                {
+                    await File.WriteAllTextAsync(_pem, PemPath);
+                });
+        }
+    }
+}

DigitalData.Core.Security/Cryptographer/RSAEncryptor.cs

@@ -0,0 +1,37 @@
+using DigitalData.Core.Abstractions.Security;
+using DigitalData.Core.Security.Config;
+using DigitalData.Core.Security.Extensions;
+
+namespace DigitalData.Core.Security.Cryptographer
+{
+    public class RSAEncryptor : RSACryptographer, IRSAEncryptor, IRSACryptographer
+    {   
+        public byte[] Encrypt(byte[] data) => RSA.Encrypt(data, Padding);
+
+        public string Encrypt(string data) => RSA.Encrypt(data.Base64ToByte(), Padding).BytesToString();
+
+        public bool Verify(string data, string signature) => Encrypt(data) == signature;
+
+        public override void Init()
+        {
+            base.Init();
+            RSA.ImportFromPem(base.Pem);
+        }
+
+        public override void FileNotFoundEvent()
+        {
+            var new_decryptor = new RSADecryptor()
+            {
+                Pem = RSAFactory<RSAFactoryParams>.Static.CreateRSAPrivateKeyPem()
+            };
+
+            _pem = new_decryptor.Encryptor.Pem;
+
+            if (PemPath is not null)
+                Task.Run(async () =>
+                {
+                    await File.WriteAllTextAsync(_pem, PemPath);
+                });
+        }
+    }
+}

DigitalData.Core.Security/Cryptographer/RSAFactory.cs

@@ -1,8 +1,9 @@
 using DigitalData.Core.Abstractions.Security;
+using DigitalData.Core.Security.Config;
 using Microsoft.Extensions.Options;
 using System.Security.Cryptography;
 
-namespace DigitalData.Core.Security
+namespace DigitalData.Core.Security.Cryptographer
 {
     public class RSAFactory<TRSAFactoryParams> : IRSAFactory<TRSAFactoryParams> where TRSAFactoryParams : RSAFactoryParams
     {
@@ -11,7 +12,7 @@ namespace DigitalData.Core.Security
         public static RSAFactory<RSAFactoryParams> Static => LazyInstance.Value;
 
         protected readonly TRSAFactoryParams _params;
-        
+
         public RSAFactory(IOptions<TRSAFactoryParams> options) => _params = options.Value;
 
         public string CreateRSAPrivateKeyPem(int? keySizeInBits = null)
@@ -26,39 +27,18 @@ namespace DigitalData.Core.Security
         {
             password ??= _params.PbePassword;
 
-            var pbeParameters = (pbeEncryptionAlgorithm is null && hashAlgorithmName is null && iterationCount is null)
+            var pbeParameters = pbeEncryptionAlgorithm is null && hashAlgorithmName is null && iterationCount is null
                 ? new PbeParameters(
                     pbeEncryptionAlgorithm ?? _params.PbeEncryptionAlgorithm,
                     hashAlgorithmName ?? _params.PbeHashAlgorithmName,
                     iterationCount ?? _params.PbeIterationCount)
                 : _params.PbeParameters;
-            
+
             var encryptedPrivateKey = RSA.Create(keySizeInBits ?? _params.KeySizeInBits).ExportEncryptedPkcs8PrivateKey(password.AsSpan(), pbeParameters);
 
             var pemChars = PemEncoding.Write(_params.EncryptedPrivateKeyPemLabel, encryptedPrivateKey);
 
             return new string(pemChars);
         }
-
-        public async Task<IRSADecryptor> ReadRSADecryptorAsync(string path, Version? version = null, CancellationToken cancellationToken = default)
-        {
-            var pem = await File.ReadAllTextAsync(path, cancellationToken);
-
-            (string Value, Version Version)? versionedPassword = null;
-
-            if(version is not null)
-            {
-                if (version != Secrets.Version)
-                    throw new InvalidOperationException($"The provided version {version} does not match the expected version {Secrets.Version}.");
-
-                versionedPassword = (Secrets.PBE_PASSWORD, Secrets.Version);
-            }
-
-            return new RSADecryptor()
-            {
-                Pem = pem,
-                VersionedPassword = versionedPassword
-            };
-        }
     }
 }

DigitalData.Core.Security/CryptographicKeyType.cs

@@ -1,12 +0,0 @@
-namespace DigitalData.Core.Security
-{
-    namespace DigitalData.Core.Security
-    {
-        public enum CryptographicKeyType
-        {
-            PrivateKey,
-            EncryptedPrivateKey,
-            PublicKey
-        }
-    }
-}

DigitalData.Core.Security/DIExtensions.cs

@@ -1,13 +1,27 @@
 using DigitalData.Core.Abstractions.Security;
+using DigitalData.Core.Security.Config;
+using DigitalData.Core.Security.Cryptographer;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.DependencyInjection.Extensions;
 using Microsoft.Extensions.Options;
+using System.Text.Json;
+using System.Text.Json.Serialization;
 
 namespace DigitalData.Core.Security
 {
     public static class DIExtensions
     {
+        public static JsonSerializerOptions AddCryptographerConverter(this JsonSerializerOptions options)
+        {
+            if (!options.Converters.OfType<HashAlgorithmNameConverter>().Any())
+                options.Converters.Add(new HashAlgorithmNameConverter());
+
+            if (!options.Converters.OfType<JsonStringEnumConverter>().Any())
+                options.Converters.Add(new JsonStringEnumConverter());
+            return options;
+        }
+
         private static IServiceCollection AddAsymCryptService<TAsymCryptParams>(this IServiceCollection services)
             where TAsymCryptParams : AsymCryptParams
         {

DigitalData.Core.Security/HashAlgorithmNameConverter.cs

@@ -0,0 +1,13 @@
+using System.Security.Cryptography;
+using System.Text.Json.Serialization;
+using System.Text.Json;
+
+namespace DigitalData.Core.Security
+{
+    public class HashAlgorithmNameConverter : JsonConverter<HashAlgorithmName>
+    {
+        public override HashAlgorithmName Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options) => new(reader.GetString() ?? string.Empty);
+
+        public override void Write(Utf8JsonWriter writer, HashAlgorithmName value, JsonSerializerOptions options) => writer.WriteStringValue(value.Name);
+    }
+}

DigitalData.Core.Security/RSACryptographer.cs

@@ -1,50 +0,0 @@
-using DigitalData.Core.Abstractions.Security;
-using System.Security.Cryptography;
-using System.Text.Json;
-
-namespace DigitalData.Core.Security
-{
-    public class RSACryptographer : IRSACryptographer
-    {
-        public required virtual string Pem { get; init; }
-
-        public RSAEncryptionPadding Padding { get; init; } = RSAEncryptionPadding.OaepSHA256;
-
-        protected virtual RSA RSA { get; } = RSA.Create();
-
-        public string? Issuer { get; init; }
-
-        public string? Audience { get; init; }
-
-        private DateOnly? _expiration;
-
-        public DateOnly? Expiration
-        {
-            get => _expiration;
-            init
-            {
-                
-                if (value <= DateOnly.FromDateTime(DateTime.Now))
-                    throw new InvalidOperationException($"Cryptographer expiration date has already passed. Cryptographer: {JsonSerializer.Serialize(this)}");
-
-                _expiration = value;
-            }
-        }
-
-        private Version? _version;
-
-        public Version? Version
-        {
-            get => _version;
-            init
-            {
-                if (value != Secrets.Version)
-                    throw new InvalidOperationException($"Cryptographer version ({value}) does not match the expected version ({Secrets.Version}). Cryptographer: {JsonSerializer.Serialize(this)}");
-
-                _version = value;
-            }
-        }
-
-        internal RSACryptographer() { }
-    }
-}

DigitalData.Core.Security/RSADecryptor.cs

@@ -1,58 +0,0 @@
-using DigitalData.Core.Abstractions.Security;
-using DigitalData.Core.Security.Extensions;
-using System.Security.Cryptography;
-
-namespace DigitalData.Core.Security
-{
-    public class RSADecryptor : RSACryptographer, IRSADecryptor, IRSACryptographer
-    {
-        public (string Value, Version Version)? VersionedPassword
-        {
-            init
-            {
-                _password = value?.Value;
-                PasswordVersion = value?.Version;
-            }
-        }
-
-        private string? _password;
-
-        public Version? PasswordVersion { get; private init; } = null;
-
-        public bool HasEncryptedPem => _password is not null;
-
-        public bool IsEncrypted => _password is not null;
-
-        private readonly Lazy<IRSAEncryptor> _lazyEncryptor;
-
-        public IRSAEncryptor Encryptor => _lazyEncryptor.Value;
-
-        private readonly Lazy<RSA> lazyRSA;
-
-        protected override RSA RSA => lazyRSA.Value;
-
-        public RSADecryptor() 
-        {
-            _lazyEncryptor = new(() => new RSAEncryptor()
-            {
-                Pem = RSA.ExportRSAPublicKeyPem(),
-                Padding = Padding
-            });
-
-            lazyRSA = new(() =>
-            {
-                var rsa = RSA.Create();
-                if (_password is null)
-                    RSA.ImportFromPem(Pem);
-                else
-                    RSA.ImportFromEncryptedPem(Pem, _password.AsSpan());
-
-                return rsa;
-            });
-        }
-        
-        public byte[] Decrypt(byte[] data) => RSA.Decrypt(data, Padding);
-
-        public string Decrypt(string data) => RSA.Decrypt(data.Base64ToByte(), Padding).BytesToString();
-    }
-}

DigitalData.Core.Security/RSAEncryptor.cs

@@ -1,24 +0,0 @@
-using DigitalData.Core.Abstractions.Security;
-using DigitalData.Core.Security.Extensions;
-
-namespace DigitalData.Core.Security
-{
-    public class RSAEncryptor : RSACryptographer, IRSAEncryptor, IRSACryptographer
-    {
-        public override required string Pem
-        { 
-            get => base.Pem;            
-            init
-            {
-                RSA.ImportFromPem(base.Pem);
-                base.Pem = value;
-            }
-        }
-
-        public byte[] Encrypt(byte[] data) => RSA.Encrypt(data, Padding);
-
-        public string Encrypt(string data) => RSA.Encrypt(data.Base64ToByte(), Padding).BytesToString();
-
-        public bool Verify(string data, string signature) => Encrypt(data) == signature;
-    }
-}

DigitalData.Core.Security/RSAFactoryParams.cs

@@ -1,34 +0,0 @@
-using System.Security.Cryptography;
-
-namespace DigitalData.Core.Security
-{
-    public class RSAFactoryParams
-    {
-        public string EncryptedPrivateKeyFileTag { get; init; } = "enc-private";
-
-        public string PrivateKeyFileTag { get; init; } = "private";
-
-        public string PublicKeyFileTag { get; init; } = "public";
-
-        public string RSAKeyNameSeparator { get; init; } = "-_-";
-
-        public int KeySizeInBits { get; init; } = 2048;
-
-        public string PbePassword { internal get; init; } = Secrets.PBE_PASSWORD;
-
-        public PbeEncryptionAlgorithm PbeEncryptionAlgorithm { get; init; } = PbeEncryptionAlgorithm.Aes256Cbc;
-
-        public HashAlgorithmName PbeHashAlgorithmName { get; init; } = HashAlgorithmName.SHA256;
-
-        public int PbeIterationCount { get; init; } = 100_000;
-
-        public string EncryptedPrivateKeyPemLabel { get; init; } = "ENCRYPTED PRIVATE KEY";
-
-        private readonly Lazy<PbeParameters> _lazyPbeParameters;
-
-        public PbeParameters PbeParameters => _lazyPbeParameters.Value;
-
-        public RSAFactoryParams()
-            => _lazyPbeParameters = new(() => new PbeParameters(PbeEncryptionAlgorithm, PbeHashAlgorithmName, PbeIterationCount));
-    }
-}

DigitalData.Core.Security/ReadOrCreateDirectory.cs

@@ -1,9 +0,0 @@
-namespace DigitalData.Core.Security
-{
-    public class ReadOrCreateDirectory
-    {
-        public required string Dir { get; init; }
-
-        public IEnumerable<string> ReadOrCreateFiles { get; init; } = new List<string>();
-    }
-}