Add LangCode property to EmailTemplate entity

Introduced a required LangCode property to the EmailTemplate entity, mapped to the LANG_CODE column in the database as varchar(5). This supports language-specific email templates.

EnvelopeGenerator.API/Controllers/AnnotationController.cs

@@ -6,19 +6,19 @@ using EnvelopeGenerator.Application.Common.Notifications.DocSigned;
 using EnvelopeGenerator.Application.EnvelopeReceivers.Queries;
 using EnvelopeGenerator.Application.Histories.Queries;
 using EnvelopeGenerator.Domain.Constants;
-using EnvelopeGenerator.GeneratorAPI.Extensions;
+using EnvelopeGenerator.API.Extensions;
 using MediatR;
 using Microsoft.AspNetCore.Authentication;
 using Microsoft.AspNetCore.Authentication.Cookies;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 
-namespace EnvelopeGenerator.GeneratorAPI.Controllers;
+namespace EnvelopeGenerator.API.Controllers;
 
 /// <summary>
 /// Manages annotations and signature lifecycle for envelopes.
 /// </summary>
-[Authorize(Roles = ReceiverRole.FullyAuth)]
+[Authorize(Policy = AuthPolicy.Receiver)]
 [ApiController]
 [Route("api/[controller]")]
 public class AnnotationController : ControllerBase
@@ -54,19 +54,13 @@ public class AnnotationController : ControllerBase
     /// </summary>
     /// <param name="psPdfKitAnnotation">Annotation payload.</param>
     /// <param name="cancel">Cancellation token.</param>
-    [Authorize(Roles = ReceiverRole.FullyAuth)]
+    [Authorize(Policy = AuthPolicy.Receiver)]
     [HttpPost]
-    [Obsolete("This endpoint is for PSPDF Kit.")]
+    [Obsolete("PSPDF Kit will no longer be used.")]
     public async Task<IActionResult> CreateOrUpdate([FromBody] PsPdfKitAnnotation? psPdfKitAnnotation = null, CancellationToken cancel = default)
     {
-        var signature = User.GetAuthReceiverSignature();
-        var uuid = User.GetAuthEnvelopeUuid();
-
-        if (signature is null || uuid is null)
-        {
-            _logger.LogError("Authorization failed: authenticated user does not have a valid signature or envelope UUID.");
-            return Unauthorized("User authentication is incomplete. Missing required claims for processing this request.");
-        }
+        var signature = User.GetReceiverSignatureOfReceiver();
+        var uuid = User.GetEnvelopeUuidOfReceiver();
 
         var envelopeReceiver = await _mediator.ReadEnvelopeReceiverAsync(uuid, signature, cancel).ThrowIfNull(Exceptions.NotFound);
 
@@ -93,20 +87,14 @@ public class AnnotationController : ControllerBase
     /// Rejects the document for the current receiver.
     /// </summary>
     /// <param name="reason">Optional rejection reason.</param>
-    [Authorize(Roles = ReceiverRole.FullyAuth)]
+    [Authorize(Policy = AuthPolicy.Receiver)]
     [HttpPost("reject")]
     [Obsolete("Use MediatR")]
     public async Task<IActionResult> Reject([FromBody] string? reason = null)
     {
-        var signature = User.GetAuthReceiverSignature();
-        var uuid = User.GetAuthEnvelopeUuid();
-        var mail = User.GetAuthReceiverMail();
-        if (uuid is null || signature is null || mail is null)
-        {
-            _logger.LogEnvelopeError(uuid: uuid, signature: signature,
-                message: @$"Unauthorized POST request in api\\envelope\\reject. One of claims, Envelope, signature or mail ({mail}) is null.");
-            return Unauthorized();
-        }
+        var signature = User.GetReceiverSignatureOfReceiver();
+        var uuid = User.GetEnvelopeUuidOfReceiver();
+        var mail = User.GetReceiverMailOfReceiver();
 
         var envRcvRes = await _envelopeReceiverService.ReadByUuidSignatureAsync(uuid: uuid, signature: signature);
 

EnvelopeGenerator.API/Controllers/AuthController.cs

@@ -0,0 +1,76 @@
+using EnvelopeGenerator.API.Controllers.Interfaces;
+using EnvelopeGenerator.API.Models;
+using EnvelopeGenerator.Domain.Constants;
+using Microsoft.AspNetCore.Authentication;
+using Microsoft.AspNetCore.Authentication.Cookies;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Options;
+
+namespace EnvelopeGenerator.API.Controllers;
+
+/// <summary>
+/// Controller verantwortlich für die Benutzer-Authentifizierung, einschließlich Anmelden, Abmelden und Überprüfung des Authentifizierungsstatus.
+/// </summary>
+[Route("api/[controller]")]
+[ApiController]
+public partial class AuthController(IOptions<AuthTokenKeys> authTokenKeyOptions, IAuthorizationService authService) : ControllerBase, IAuthController
+{
+    private readonly AuthTokenKeys authTokenKeys = authTokenKeyOptions.Value;
+
+    /// <summary>
+    /// 
+    /// </summary>
+    public IAuthorizationService AuthService { get; } = authService;
+
+    /// <summary>
+    /// Entfernt das Authentifizierungs-Cookie des Benutzers (AuthCookie)
+    /// </summary>
+    /// <returns>
+    /// Gibt eine HTTP 200 oder 401.
+    /// </returns>
+    /// <remarks>
+    /// Sample request:
+    ///
+    ///     POST /api/auth/logout
+    ///
+    /// </remarks>
+    /// <response code="200">Erfolgreich gelöscht, wenn der Benutzer ein berechtigtes Cookie hat.</response>
+    /// <response code="401">Wenn es kein zugelassenes Cookie gibt, wird „nicht zugelassen“ zurückgegeben.</response>
+    [ProducesResponseType(typeof(void), StatusCodes.Status200OK)]
+    [ProducesResponseType(typeof(void), StatusCodes.Status401Unauthorized)]
+    [Authorize(Policy = AuthPolicy.SenderOrReceiver)]
+    [HttpPost("logout")]
+    public async Task<IActionResult> Logout()
+    {
+        if (await this.IsUserInPolicyAsync(AuthPolicy.Sender))
+            Response.Cookies.Delete(authTokenKeys.Cookie);
+        else if (await this.IsUserInPolicyAsync(AuthPolicy.ReceiverOrReceiverTFA))
+            await HttpContext.SignOutAsync(CookieAuthenticationDefaults.AuthenticationScheme);
+        else
+            return Unauthorized();
+
+        return Ok();
+    }
+
+    /// <summary>
+    /// Prüft, ob der Benutzer ein autorisiertes Token hat.
+    /// </summary>
+    /// <returns>Wenn ein autorisiertes Token vorhanden ist HTTP 200 asynchron 401</returns>
+    /// <remarks>
+    /// Sample request:
+    ///
+    ///     GET /api/auth
+    ///
+    /// </remarks>
+    /// <response code="200">Wenn es einen autorisierten Cookie gibt.</response>
+    /// <response code="401">Wenn kein Cookie vorhanden ist oder nicht autorisierte.</response>
+    [ProducesResponseType(typeof(void), StatusCodes.Status200OK)]
+    [ProducesResponseType(typeof(void), StatusCodes.Status401Unauthorized)]
+    [HttpGet("check")]
+    [Authorize]
+    public IActionResult Check(string? role = null)
+        => role is not null && !User.IsInRole(role)
+            ? Unauthorized()
+            : Ok();
+}

EnvelopeGenerator.API/Controllers/ConfigController.cs

@@ -1,9 +1,9 @@
-using EnvelopeGenerator.GeneratorAPI.Models.PsPdfKitAnnotation;
+using EnvelopeGenerator.API.Models.PsPdfKitAnnotation;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Options;
 
-namespace EnvelopeGenerator.GeneratorAPI.Controllers;
+namespace EnvelopeGenerator.API.Controllers;
 
 /// <summary>
 /// Exposes configuration data required by the client applications.
@@ -22,6 +22,7 @@ public class ConfigController(IOptionsMonitor<AnnotationParams> annotationParams
     /// Returns annotation configuration that was previously rendered by MVC.
     /// </summary>
     [HttpGet("Annotations")]
+    [Obsolete("PSPDF Kit will no longer be used.")]
     public IActionResult GetAnnotationParams()
     {
         return Ok(_annotationParams.AnnotationJSObject);

EnvelopeGenerator.API/Controllers/DocumentController.cs

@@ -0,0 +1,63 @@
+using EnvelopeGenerator.API.Controllers.Interfaces;
+using EnvelopeGenerator.API.Extensions;
+using EnvelopeGenerator.Application.Documents.Queries;
+using EnvelopeGenerator.Domain.Constants;
+using MediatR;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+
+namespace EnvelopeGenerator.API.Controllers;
+
+/// <summary>
+/// Provides access to envelope documents for authenticated receivers.
+/// </summary>
+/// <remarks>
+/// Initializes a new instance of the <see cref="DocumentController"/> class.
+/// </remarks>
+[Authorize]
+[ApiController]
+[Route("api/[controller]")]
+public class DocumentController(IMediator mediator, IAuthorizationService authService) : ControllerBase, IAuthController
+{
+    /// <summary>
+    /// 
+    /// </summary>
+    public IAuthorizationService AuthService => authService;
+
+    /// <summary>
+    /// Returns the document bytes receiver.
+    /// </summary>
+    /// <param name="query">Encoded envelope key.</param>
+    /// <param name="cancel">Cancellation token.</param>
+    [HttpGet]
+    [Authorize(Policy = AuthPolicy.SenderOrReceiver)]
+    public async Task<IActionResult> GetDocument(CancellationToken cancel, [FromQuery] ReadDocumentQuery? query = null)
+    {
+        // Sender: expects query with envelope key
+        if (await this.IsUserInPolicyAsync(AuthPolicy.Sender))
+        {
+            if (query is null)
+                return BadRequest("Missing document query.");
+
+            var senderDoc = await mediator.Send(query, cancel);
+            return senderDoc.ByteData is byte[] senderDocByte
+                ? File(senderDocByte, "application/octet-stream")
+                : NotFound("Document is empty.");
+        }
+
+        // Receiver: resolve envelope id from claims
+        if (await this.IsUserInPolicyAsync(AuthPolicy.Receiver))
+        {           
+            if (query is not null)
+                return BadRequest("Query parameters are not allowed for receiver role.");
+
+            var envelopeId = User.GetEnvelopeIdOfReceiver();
+            var receiverDoc = await mediator.Send(new ReadDocumentQuery { EnvelopeId = envelopeId }, cancel);
+            return receiverDoc.ByteData is byte[] receiverDocByte
+                ? File(receiverDocByte, "application/octet-stream")
+                : NotFound("Document is empty.");
+        }
+
+        return Unauthorized();
+    }
+}

EnvelopeGenerator.API/Controllers/EmailTemplateController.cs

@@ -0,0 +1,77 @@
+using AutoMapper;
+using EnvelopeGenerator.Application.EmailTemplates.Commands;
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using MediatR;
+using EnvelopeGenerator.Application.Common.Dto;
+using DigitalData.Core.Abstraction.Application.Repository;
+using EnvelopeGenerator.Domain.Entities;
+using Microsoft.EntityFrameworkCore;
+using EnvelopeGenerator.Domain.Constants;
+using EnvelopeGenerator.Application.EmailTemplates.Queries;
+
+namespace EnvelopeGenerator.API.Controllers;
+
+/// <summary>
+/// Controller for managing temp templates.
+/// Steuerung zur Verwaltung von E-Mail-Vorlagen.
+/// </summary>
+/// <remarks>
+/// Initialisiert eine neue Instanz der <see cref="EmailTemplateController"/>-Klasse.
+/// </remarks>
+/// <param name="mapper">
+/// <param name="repository">
+/// Die AutoMapper-Instanz, die zum Zuordnen von Objekten verwendet wird.
+/// </param>
+[Route("api/[controller]")]
+[ApiController]
+[Authorize(Policy = AuthPolicy.Sender)]
+public class EmailTemplateController(IMapper mapper, IRepository<EmailTemplate> repository, IMediator mediator) : ControllerBase
+{
+    /// <summary>
+    /// Ruft E-Mail-Vorlagen basierend auf der angegebenen Abfrage ab.
+    /// Gibt alles zurück, wenn keine Id- oder Typ-Informationen eingegeben wurden.
+    /// </summary>
+    /// <param name="emailTemplate">Die Abfrageparameter zum Abrufen von E-Mail-Vorlagen.</param>
+    /// <returns>Gibt HTTP-Antwort zurück</returns>
+    /// <remarks>
+    /// Sample request:
+    /// GET /api/EmailTemplate?emailTemplateId=123
+    /// </remarks>
+    /// <response code="200">Wenn die E-Mail-Vorlagen erfolgreich abgerufen werden.</response>
+    /// <response code="400">Wenn die Abfrageparameter ungültig sind.</response>
+    /// <response code="401">Wenn der Benutzer nicht authentifiziert ist.</response>
+    /// <response code="404">Wenn die gesuchte Abfrage nicht gefunden wird.</response>
+    [HttpGet]
+    public async Task<IActionResult> Get([FromQuery] ReadEmailTemplateQuery? emailTemplate = null)
+    {
+        if (emailTemplate is null || (emailTemplate.Id is null && emailTemplate.Type is null))
+        {
+            var temps = await repository.Query.ToListAsync();
+            return Ok(mapper.Map<IEnumerable<EmailTemplateDto>>(temps));
+        }
+        else
+        {
+            var temp = await mediator.Send(emailTemplate);
+            return temp is null ? NotFound() : Ok(temp);
+        }
+    }
+
+    /// <summary>
+    /// Updates an temp template or resets it if no update command is provided.
+    /// Aktualisiert eine E-Mail-Vorlage oder setzt sie zurück, wenn kein Aktualisierungsbefehl angegeben ist.
+    /// </summary>
+    /// <param name="update"></param>
+    /// <param name="cancel"></param>
+    /// <returns></returns>
+    /// <response code="200">Wenn die E-Mail-Vorlage erfolgreich aktualisiert oder zurückgesetzt wird.</response>
+    /// <response code="400">Wenn die Abfrage ohne einen String gesendet wird.</response>
+    /// <response code="401">Wenn der Benutzer nicht authentifiziert ist.</response>
+    /// <response code="404">Wenn die gesuchte Abfrage nicht gefunden wird.</response>
+    [HttpPut]
+    public async Task<IActionResult> Update([FromBody] UpdateEmailTemplateCommand update, CancellationToken cancel)
+    {
+        await mediator.Send(update, cancel);
+        return Ok();
+    }
+}

EnvelopeGenerator.API/Controllers/EnvelopeController.cs

@@ -1,11 +1,12 @@
-using EnvelopeGenerator.Application.Envelopes.Commands;
+using EnvelopeGenerator.API.Extensions;
+using EnvelopeGenerator.Application.Envelopes.Commands;
 using EnvelopeGenerator.Application.Envelopes.Queries;
 using MediatR;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 using Newtonsoft.Json;
 
-namespace EnvelopeGenerator.GeneratorAPI.Controllers;
+namespace EnvelopeGenerator.API.Controllers;
 
 /// <summary>
 /// Dieser Controller stellt Endpunkte für die Verwaltung von Umschlägen bereit.

EnvelopeGenerator.API/Controllers/EnvelopeReceiverController.cs

@@ -3,7 +3,7 @@ using EnvelopeGenerator.Application.EnvelopeReceivers.Commands;
 using EnvelopeGenerator.Application.EnvelopeReceivers.Queries;
 using EnvelopeGenerator.Application.Envelopes.Queries;
 using EnvelopeGenerator.Domain.Entities;
-using EnvelopeGenerator.GeneratorAPI.Models;
+using EnvelopeGenerator.API.Models;
 using MediatR;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
@@ -13,8 +13,9 @@ using System.Data;
 using EnvelopeGenerator.Application.Common.SQL;
 using EnvelopeGenerator.Application.Common.Dto.Receiver;
 using EnvelopeGenerator.Application.Common.Interfaces.SQLExecutor;
+using EnvelopeGenerator.API.Extensions;
 
-namespace EnvelopeGenerator.GeneratorAPI.Controllers;
+namespace EnvelopeGenerator.API.Controllers;
 
 /// <summary>
 /// Controller für die Verwaltung von Umschlagempfängern.
@@ -65,16 +66,7 @@ public class EnvelopeReceiverController : ControllerBase
     [HttpGet]
     public async Task<IActionResult> GetEnvelopeReceiver([FromQuery] ReadEnvelopeReceiverQuery envelopeReceiver)
     {
-        var username = User.GetUsernameOrDefault();
-
-        if (username is null)
-        {
-            _logger.LogError(@"Envelope Receiver dto cannot be sent because username claim is null. Potential authentication and authorization error. The value of other claims are [id: {id}], [username: {username}], [name: {name}], [prename: {prename}], [email: {email}].",
-                User.GetId(), User.GetUsernameOrDefault(), User.GetNameOrDefault(), User.GetPrenameOrDefault(), User.GetEmailOrDefault());
-            return StatusCode(StatusCodes.Status500InternalServerError);
-        }
-
-        envelopeReceiver = envelopeReceiver with { Username = username };
+        envelopeReceiver = envelopeReceiver with { Username = User.GetUsername() };
 
         var result = await _mediator.Send(envelopeReceiver);
 
@@ -225,18 +217,14 @@ public class EnvelopeReceiverController : ControllerBase
         using (SqlConnection conn = new(_cnnStr))
         {
             conn.Open();
-            var formattedSQL_hist = string.Format(sql_hist, envelope.Uuid.ToSqlParam(), 1003.ToSqlParam(), userId.ToSqlParam());
-            using (SqlCommand cmd = new SqlCommand(formattedSQL_hist, conn))
-            {
-                cmd.CommandType = CommandType.Text;
+            var formattedSQL_hist = string.Format(sql_hist, envelope.Uuid.ToSqlParam(), 1003.ToSqlParam(), User.GetId().ToSqlParam());
+            using SqlCommand cmd = new(formattedSQL_hist, conn);
+            cmd.CommandType = CommandType.Text;
 
-                using (SqlDataReader reader = cmd.ExecuteReader())
-                {
-                    if (reader.Read())
-                    {
-                        bool outSuccess = reader.GetBoolean(0);
-                    }
-                }
+            using SqlDataReader reader = cmd.ExecuteReader();
+            if (reader.Read())
+            {
+                bool outSuccess = reader.GetBoolean(0);
             }
         }
         #endregion

EnvelopeGenerator.API/Controllers/HistoryController.cs

@@ -6,7 +6,7 @@ using EnvelopeGenerator.Application.Histories.Queries;
 using EnvelopeGenerator.Domain.Constants;
 using EnvelopeGenerator.Application.Common.Extensions;
 
-namespace EnvelopeGenerator.GeneratorAPI.Controllers;
+namespace EnvelopeGenerator.API.Controllers;
 
 /// <summary>
 /// Dieser Controller stellt Endpunkte für den Zugriff auf die Umschlaghistorie bereit.
@@ -113,6 +113,6 @@ public class HistoryController : ControllerBase
     public async Task<IActionResult> GetAllAsync([FromQuery] ReadHistoryQuery historyQuery, CancellationToken cancel)
     {
         var history = await _mediator.Send(historyQuery, cancel).ThrowIfEmpty(Exceptions.NotFound);
-        return Ok((historyQuery.OnlyLast ?? false) ? history.MaxBy(h => h.AddedWhen) : history);
+        return Ok((historyQuery.OnlyLast) ? history.MaxBy(h => h.AddedWhen) : history);
     }
 }

EnvelopeGenerator.API/Controllers/Interfaces/IAuthController.cs

@@ -0,0 +1,38 @@
+using System.Security.Claims;
+using Microsoft.AspNetCore.Authorization;
+
+namespace EnvelopeGenerator.API.Controllers.Interfaces;
+
+/// <summary>
+/// 
+/// </summary>
+public interface IAuthController
+{
+    /// <summary>
+    /// 
+    /// </summary>
+    IAuthorizationService AuthService { get; }
+
+    /// <summary>
+    /// 
+    /// </summary>
+    ClaimsPrincipal User { get; }
+}
+
+/// <summary>
+/// 
+/// </summary>
+public static class AuthControllerExtensions
+{
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="controller"></param>
+    /// <param name="policyName"></param>
+    /// <returns></returns>
+    public static async Task<bool> IsUserInPolicyAsync(this IAuthController controller, string policyName)
+    {
+        var result = await controller.AuthService.AuthorizeAsync(controller.User, policyName);
+        return result.Succeeded;
+    }
+}

EnvelopeGenerator.API/Controllers/LocalizationController.cs

@@ -1,12 +1,12 @@
 using DigitalData.Core.API;
 using EnvelopeGenerator.Application.Resources;
-using EnvelopeGenerator.CommonServices;
 using Microsoft.AspNetCore.Localization;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Caching.Memory;
 using Microsoft.Extensions.Localization;
+using EnvelopeGenerator.Application.Resources;
 
-namespace EnvelopeGenerator.GeneratorAPI.Controllers;
+namespace EnvelopeGenerator.API.Controllers;
 
 /// <summary>
 /// Controller für die Verwaltung der Lokalisierung und Spracheinstellungen.
@@ -19,7 +19,7 @@ public class LocalizationController : ControllerBase
     private static readonly Guid L_KEY = Guid.NewGuid();
 
     private readonly ILogger<LocalizationController> _logger;
-    private readonly IStringLocalizer<Model> _mLocalizer;
+    private readonly IStringLocalizer<Resource> _mLocalizer;
     private readonly IStringLocalizer<Resource> _localizer;
     private readonly IMemoryCache _cache;
 
@@ -34,7 +34,7 @@ public class LocalizationController : ControllerBase
         ILogger<LocalizationController> logger,
         IStringLocalizer<Resource> localizer,
         IMemoryCache memoryCache,
-        IStringLocalizer<Model> _modelLocalizer)
+        IStringLocalizer<Resource> _modelLocalizer)
     {
         _logger = logger;
         _localizer = localizer;

EnvelopeGenerator.API/Controllers/ReadOnlyController.cs

@@ -2,12 +2,12 @@ using DigitalData.Core.Abstraction.Application.DTO;
 using EnvelopeGenerator.Application.Common.Dto.EnvelopeReceiverReadOnly;
 using EnvelopeGenerator.Application.Common.Interfaces.Services;
 using EnvelopeGenerator.Domain.Constants;
-using EnvelopeGenerator.GeneratorAPI.Extensions;
+using EnvelopeGenerator.API.Extensions;
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 using Newtonsoft.Json;
 
-namespace EnvelopeGenerator.GeneratorAPI.Controllers;
+namespace EnvelopeGenerator.API.Controllers;
 
 /// <summary>
 /// Manages read-only envelope sharing flows.
@@ -37,22 +37,17 @@ public class ReadOnlyController : ControllerBase
     /// </summary>
     /// <param name="createDto">Creation payload.</param>
     [HttpPost]
-    [Authorize(Roles = ReceiverRole.FullyAuth)]
+    [Authorize(Policy = AuthPolicy.Receiver)]
     public async Task<IActionResult> CreateAsync([FromBody] EnvelopeReceiverReadOnlyCreateDto createDto)
     {
-        var authReceiverMail = User.GetAuthReceiverMail();
+        var authReceiverMail = User.GetReceiverMailOfReceiver();
         if (authReceiverMail is null)
         {
             _logger.LogError("EmailAddress claim is not found in envelope-receiver-read-only creation process. Create DTO is:\n {dto}", JsonConvert.SerializeObject(createDto));
             return Unauthorized();
         }
 
-        var envelopeId = User.GetAuthEnvelopeId();
-        if (envelopeId is null)
-        {
-            _logger.LogError("Envelope Id claim is not found in envelope-receiver-read-only creation process. Create DTO is:\n {dto}", JsonConvert.SerializeObject(createDto));
-            return Unauthorized();
-        }
+        var envelopeId = User.GetEnvelopeIdOfReceiver();
 
         createDto.AddedWho = authReceiverMail;
         createDto.EnvelopeId = envelopeId;

EnvelopeGenerator.API/Controllers/TfaRegistrationController.cs

@@ -3,8 +3,7 @@ using EnvelopeGenerator.Application.Common.Extensions;
 using EnvelopeGenerator.Application.Common.Interfaces.Services;
 using EnvelopeGenerator.Application.Resources;
 using EnvelopeGenerator.Domain.Constants;
-using EnvelopeGenerator.GeneratorAPI.Extensions;
-using EnvelopeGenerator.GeneratorAPI.Models;
+using EnvelopeGenerator.API.Models;
 using Ganss.Xss;
 using Microsoft.AspNetCore.Authentication;
 using Microsoft.AspNetCore.Authentication.Cookies;
@@ -13,7 +12,7 @@ using Microsoft.AspNetCore.Mvc;
 using Microsoft.Extensions.Localization;
 using Microsoft.Extensions.Options;
 
-namespace EnvelopeGenerator.GeneratorAPI.Controllers;
+namespace EnvelopeGenerator.API.Controllers;
 
 /// <summary>
 /// Exposes endpoints for registering and managing two-factor authentication for envelope receivers.
@@ -112,7 +111,7 @@ public class TfaRegistrationController : ControllerBase
     /// <summary>
     /// Logs out the envelope receiver from cookie authentication.
     /// </summary>
-    [Authorize(Roles = ReceiverRole.FullyAuth)]
+    [Authorize(Policy = AuthPolicy.Receiver)]
     [HttpPost("auth/logout")]
     public async Task<IActionResult> LogOutAsync()
     {

EnvelopeGenerator.API/Documentation/AuthProxyDocumentFilter.cs

@@ -0,0 +1,70 @@
+using EnvelopeGenerator.API.Models;
+using Microsoft.OpenApi.Any;
+using Microsoft.OpenApi.Models;
+using Swashbuckle.AspNetCore.SwaggerGen;
+
+namespace EnvelopeGenerator.API.Documentation;
+
+/// <summary>
+/// 
+/// </summary>
+public sealed class AuthProxyDocumentFilter : IDocumentFilter
+{
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="swaggerDoc"></param>
+    /// <param name="context"></param>
+    public void Apply(OpenApiDocument swaggerDoc, DocumentFilterContext context)
+    {
+        const string path = "/api/auth";
+
+        var loginSchema = context.SchemaGenerator.GenerateSchema(typeof(Login), context.SchemaRepository);
+        var loginExample = new OpenApiObject
+        {
+            ["password"] = new OpenApiString(""),
+            ["username"] = new OpenApiString("")
+        };
+
+        var operation = new OpenApiOperation
+        {
+            Summary = "Proxy login (auth-hub)",
+            Description = "Proxies the request to the auth service. Add query parameter `cookie=true|false`.",
+            Tags = [new() { Name = "Auth" }],
+            Parameters =
+            {
+                new OpenApiParameter
+                {
+                    Name = "cookie",
+                    In = ParameterLocation.Query,
+                    Required = false,
+                    Schema = new OpenApiSchema { Type = "boolean", Default = new OpenApiBoolean(true) },
+                    Example = new OpenApiBoolean(true),
+                    Description = "If true, auth service sets the auth cookie."
+                }
+            },
+            RequestBody = new OpenApiRequestBody
+            {
+                Required = true,
+                Content =
+                {
+                    ["application/json"] = new OpenApiMediaType { Schema = loginSchema, Example = loginExample },
+                    ["multipart/form-data"] = new OpenApiMediaType { Schema = loginSchema, Example = loginExample }
+                }
+            },
+            Responses =
+            {
+                ["200"] = new OpenApiResponse { Description = "OK (proxied response)" },
+                ["401"] = new OpenApiResponse { Description = "Unauthorized" }
+            }
+        };
+
+        swaggerDoc.Paths[path] = new OpenApiPathItem
+        {
+            Operations =
+            {
+                [OperationType.Post] = operation
+            }
+        };
+    }
+}

EnvelopeGenerator.API/EnvelopeClaimTypes.cs

@@ -0,0 +1,17 @@
+namespace EnvelopeGenerator.API;
+
+/// <summary>
+/// Provides custom claim types for envelope-related information.
+/// </summary>
+public static class EnvelopeClaimTypes
+{
+    /// <summary>
+    /// Claim type for the title of an envelope.
+    /// </summary>
+    public static readonly string Title = $"Envelope{nameof(Title)}";
+
+    /// <summary>
+    /// Claim type for the ID of an envelope.
+    /// </summary>
+    public static readonly string Id = $"Envelope{nameof(Id)}";
+}

EnvelopeGenerator.API/EnvelopeGenerator.API.csproj

@@ -17,6 +17,17 @@
 	<DocumentationFile>bin\$(Configuration)\$(TargetFramework)\$(AssemblyName).xml</DocumentationFile>
   </PropertyGroup>
 
+  <ItemGroup>
+    <Compile Remove="ClientApp\**" />
+    <Content Remove="ClientApp\**" />
+    <EmbeddedResource Remove="ClientApp\**" />
+    <None Remove="ClientApp\**" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <None Include="yarp.json" CopyToOutputDirectory="PreserveNewest" />
+  </ItemGroup>
+
   <ItemGroup>
     <PackageReference Include="AspNetCore.Scalar" Version="1.1.8" />
     <PackageReference Include="DigitalData.Auth.Client" Version="1.3.7" />
@@ -28,6 +39,7 @@
     <PackageReference Include="Scalar.AspNetCore" Version="2.2.1" />
     <PackageReference Include="Swashbuckle.AspNetCore" Version="8.1.1" />
     <PackageReference Include="DigitalData.EmailProfilerDispatcher.Abstraction" Version="3.2.0" />
+    <PackageReference Include="Yarp.ReverseProxy" Version="2.1.0" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(TargetFramework)' == 'net7.0'">
@@ -49,41 +61,13 @@
   </ItemGroup>
 
   <ItemGroup>
-    <Folder Include="ClientApp\" />
+    <Folder Include="wwwroot\" />
   </ItemGroup>
 
   <ItemGroup>
     <ProjectReference Include="..\EnvelopeGenerator.Application\EnvelopeGenerator.Application.csproj" />
-    <ProjectReference Include="..\EnvelopeGenerator.CommonServices\EnvelopeGenerator.CommonServices.vbproj" />
     <ProjectReference Include="..\EnvelopeGenerator.Domain\EnvelopeGenerator.Domain.csproj" />
     <ProjectReference Include="..\EnvelopeGenerator.Infrastructure\EnvelopeGenerator.Infrastructure.csproj" />
   </ItemGroup>
 
-  <ItemGroup>
-    <None Update="ClientApp\envelope-generator-ui\dist\envelope-generator-ui\browser\chunk-35PBLQEP.js">
-      <CopyToOutputDirectory>Never</CopyToOutputDirectory>
-    </None>
-    <None Update="ClientApp\envelope-generator-ui\dist\envelope-generator-ui\browser\chunk-IUSOII6E.js">
-      <CopyToOutputDirectory>Never</CopyToOutputDirectory>
-    </None>
-    <None Update="ClientApp\envelope-generator-ui\dist\envelope-generator-ui\browser\favicon.ico">
-      <CopyToOutputDirectory>Never</CopyToOutputDirectory>
-    </None>
-    <None Update="ClientApp\envelope-generator-ui\dist\envelope-generator-ui\browser\index.html">
-      <CopyToOutputDirectory>Never</CopyToOutputDirectory>
-    </None>
-    <None Update="ClientApp\envelope-generator-ui\dist\envelope-generator-ui\browser\login\index.html">
-      <CopyToOutputDirectory>Never</CopyToOutputDirectory>
-    </None>
-    <None Update="ClientApp\envelope-generator-ui\dist\envelope-generator-ui\browser\main-ZN7C4PGY.js">
-      <CopyToOutputDirectory>Never</CopyToOutputDirectory>
-    </None>
-    <None Update="ClientApp\envelope-generator-ui\dist\envelope-generator-ui\browser\polyfills-N6LQB2YD.js">
-      <CopyToOutputDirectory>Never</CopyToOutputDirectory>
-    </None>
-    <None Update="ClientApp\envelope-generator-ui\dist\envelope-generator-ui\browser\styles-S5ZWIC2V.css">
-      <CopyToOutputDirectory>Never</CopyToOutputDirectory>
-    </None>
-  </ItemGroup>
-
 </Project>

EnvelopeGenerator.API/Extensions/ReceiverClaimExtensions.cs

@@ -1,55 +1,69 @@
+using System.Linq;
 using System.Security.Claims;
 using EnvelopeGenerator.Application.Common.Dto.EnvelopeReceiver;
 using Microsoft.AspNetCore.Authentication;
 using Microsoft.AspNetCore.Authentication.Cookies;
 
-namespace EnvelopeGenerator.GeneratorAPI.Extensions;
+namespace EnvelopeGenerator.API.Extensions;
 
 /// <summary>
 /// Provides helper methods for working with envelope-specific authentication claims.
 /// </summary>
-public static class EnvelopeAuthExtensions
+public static class ReceiverClaimExtensions
 {
-    /// <summary>
-    /// Retrieves a claim value by type.
-    /// </summary>
-    /// <param name="user">The current claims principal.</param>
-    /// <param name="claimType">The claim type to resolve.</param>
-    /// <returns>The claim value or null when missing.</returns>
-    public static string? GetClaimValue(this ClaimsPrincipal user, string claimType) => user.FindFirstValue(claimType);
+    private static string GetRequiredClaimOfReceiver(this ClaimsPrincipal user, string claimType)
+    {
+        var value = user.FindFirstValue(claimType);
+        if (value is not null)
+        {
+            return value;
+        }
+
+        var identity = user.Identity;
+        var principalName = identity?.Name ?? "(anonymous)";
+        var authType = identity?.AuthenticationType ?? "(none)";
+        var availableClaims = string.Join(", ", user.Claims.Select(c => $"{c.Type}={c.Value}"));
+        var message = $"Required claim '{claimType}' is missing for user '{principalName}' (auth: {authType}). Available claims: [{availableClaims}].";
+        throw new InvalidOperationException(message);
+    }
 
     /// <summary>
     /// Gets the authenticated envelope UUID from the claims.
     /// </summary>
-    public static string? GetAuthEnvelopeUuid(this ClaimsPrincipal user) => user.FindFirstValue(ClaimTypes.NameIdentifier);
+    public static string GetEnvelopeUuidOfReceiver(this ClaimsPrincipal user) => user.GetRequiredClaimOfReceiver(ClaimTypes.NameIdentifier);
 
     /// <summary>
     /// Gets the authenticated receiver signature from the claims.
     /// </summary>
-    public static string? GetAuthReceiverSignature(this ClaimsPrincipal user) => user.FindFirstValue(ClaimTypes.Hash);
+    public static string GetReceiverSignatureOfReceiver(this ClaimsPrincipal user) => user.GetRequiredClaimOfReceiver(ClaimTypes.Hash);
 
     /// <summary>
     /// Gets the authenticated receiver display name from the claims.
     /// </summary>
-    public static string? GetAuthReceiverName(this ClaimsPrincipal user) => user.FindFirstValue(ClaimTypes.Name);
+    public static string GetReceiverNameOfReceiver(this ClaimsPrincipal user) => user.GetRequiredClaimOfReceiver(ClaimTypes.Name);
 
     /// <summary>
     /// Gets the authenticated receiver email address from the claims.
     /// </summary>
-    public static string? GetAuthReceiverMail(this ClaimsPrincipal user) => user.FindFirstValue(ClaimTypes.Email);
+    public static string GetReceiverMailOfReceiver(this ClaimsPrincipal user) => user.GetRequiredClaimOfReceiver(ClaimTypes.Email);
 
     /// <summary>
     /// Gets the authenticated envelope title from the claims.
     /// </summary>
-    public static string? GetAuthEnvelopeTitle(this ClaimsPrincipal user) => user.FindFirstValue(EnvelopeClaimTypes.Title);
+    public static string GetEnvelopeTitleOfReceiver(this ClaimsPrincipal user) => user.GetRequiredClaimOfReceiver(EnvelopeClaimTypes.Title);
 
     /// <summary>
     /// Gets the authenticated envelope identifier from the claims.
     /// </summary>
-    public static int? GetAuthEnvelopeId(this ClaimsPrincipal user)
+    public static int GetEnvelopeIdOfReceiver(this ClaimsPrincipal user)
     {
-        var envIdStr = user.FindFirstValue(EnvelopeClaimTypes.Id);
-        return int.TryParse(envIdStr, out var envId) ? envId : null;
+        var envIdStr = user.GetRequiredClaimOfReceiver(EnvelopeClaimTypes.Id);
+        if (!int.TryParse(envIdStr, out var envId))
+        {
+            throw new InvalidOperationException($"Claim '{EnvelopeClaimTypes.Id}' is not a valid integer.");
+        }
+
+        return envId;
     }
 
     /// <summary>
@@ -84,4 +98,4 @@ public static class EnvelopeAuthExtensions
             new ClaimsPrincipal(claimsIdentity),
             authProperties);
     }
-}
+}

EnvelopeGenerator.API/Extensions/SenderClaimExtensions.cs

@@ -0,0 +1,95 @@
+using System.Security.Claims;
+
+namespace EnvelopeGenerator.API.Extensions
+{
+    /// <summary>
+    /// Provides extension methods for extracting user information from a <see cref="ClaimsPrincipal"/>.
+    /// </summary>
+    public static class SenderClaimExtensions
+    {
+        private static string GetRequiredClaimOfSender(this ClaimsPrincipal user, string claimType)
+        {
+            var value = user.FindFirstValue(claimType);
+            if (value is not null)
+            {
+                return value;
+            }
+
+            var identity = user.Identity;
+            var principalName = identity?.Name ?? "(anonymous)";
+            var authType = identity?.AuthenticationType ?? "(none)";
+            var availableClaims = string.Join(", ", user.Claims.Select(c => $"{c.Type}={c.Value}"));
+            var message = $"Required claim '{claimType}' is missing for user '{principalName}' (auth: {authType}). Available claims: [{availableClaims}].";
+            throw new InvalidOperationException(message);
+        }
+
+        private static string GetRequiredClaimOfSender(this ClaimsPrincipal user, params string[] claimTypes)
+        {
+            string? value = null;
+
+            foreach (var claimType in claimTypes)
+            {
+                value = user.FindFirstValue(claimType);
+                if (value is not null)
+                    return value;
+            }
+
+            var identity = user.Identity;
+            var principalName = identity?.Name ?? "(anonymous)";
+            var authType = identity?.AuthenticationType ?? "(none)";
+            var availableClaims = string.Join(", ", user.Claims.Select(c => $"{c.Type}={c.Value}"));
+            var message = $"Required claim among [{string.Join(", ", claimTypes)}] is missing for user '{principalName}' (auth: {authType}). Available claims: [{availableClaims}].";
+            throw new InvalidOperationException(message);
+        }
+
+        /// <summary>
+        /// Retrieves the user's ID from the claims. Throws an exception if the ID is missing or invalid.
+        /// </summary>
+        /// <param name="user">The <see cref="ClaimsPrincipal"/> representing the user.</param>
+        /// <returns>The user's ID as an integer.</returns>
+        /// <exception cref="InvalidOperationException">Thrown if the user ID claim is missing or invalid.</exception>
+        public static int GetId(this ClaimsPrincipal user)
+        {
+            var idValue = user.GetRequiredClaimOfSender(ClaimTypes.NameIdentifier, "sub");
+
+            if (!int.TryParse(idValue, out var result))
+            {
+                throw new InvalidOperationException("User ID claim is missing or invalid. This may indicate a misconfigured or forged JWT token.");
+            }
+
+            return result;
+        }
+
+        /// <summary>
+        /// Retrieves the username from the claims.
+        /// </summary>
+        /// <param name="user">The <see cref="ClaimsPrincipal"/> representing the user.</param>
+        /// <returns>The username as a string.</returns>
+        public static string GetUsername(this ClaimsPrincipal user)
+            => user.GetRequiredClaimOfSender(ClaimTypes.Name);
+
+        /// <summary>
+        /// Retrieves the user's surname (last name) from the claims.
+        /// </summary>
+        /// <param name="user">The <see cref="ClaimsPrincipal"/> representing the user.</param>
+        /// <returns>The surname as a string.</returns>
+        public static string GetName(this ClaimsPrincipal user)
+            => user.GetRequiredClaimOfSender(ClaimTypes.Surname);
+
+        /// <summary>
+        /// Retrieves the user's given name (first name) from the claims.
+        /// </summary>
+        /// <param name="user">The <see cref="ClaimsPrincipal"/> representing the user.</param>
+        /// <returns>The given name as a string.</returns>
+        public static string GetPrename(this ClaimsPrincipal user)
+            => user.GetRequiredClaimOfSender(ClaimTypes.GivenName);
+
+        /// <summary>
+        /// Retrieves the user's email address from the claims.
+        /// </summary>
+        /// <param name="user">The <see cref="ClaimsPrincipal"/> representing the user.</param>
+        /// <returns>The email address as a string.</returns>
+        public static string GetEmail(this ClaimsPrincipal user)
+            => user.GetRequiredClaimOfSender(ClaimTypes.Email);
+    }
+}

EnvelopeGenerator.API/Middleware/ExceptionHandlingMiddleware.cs

@@ -1,4 +1,4 @@
-namespace EnvelopeGenerator.GeneratorAPI.Middleware;
+namespace EnvelopeGenerator.API.Middleware;
 
 using DigitalData.Core.Exceptions;
 using Microsoft.AspNetCore.Http;

EnvelopeGenerator.API/Models/Auth.cs

@@ -1,4 +1,4 @@
-namespace EnvelopeGenerator.GeneratorAPI.Models;
+namespace EnvelopeGenerator.API.Models;
 
 public record Auth(string? AccessCode = null, string? SmsCode = null, string? AuthenticatorCode = null, bool UserSelectSMS = default)
 {

EnvelopeGenerator.API/Models/AuthTokenKeys.cs

@@ -1,4 +1,4 @@
-namespace EnvelopeGenerator.GeneratorAPI.Models;
+namespace EnvelopeGenerator.API.Models;
 
 /// <summary>
 /// Represents the keys and default values used for authentication token handling 
@@ -24,5 +24,5 @@ public class AuthTokenKeys
     /// <summary>
     /// Gets the expected audience value for the authentication token.
     /// </summary>
-    public string Audience { get; init; } = "sign-flow-gen.digitaldata.works";
+    public string Audience { get; init; } = "sign-flow.digitaldata.works";
 }

EnvelopeGenerator.API/Models/ConnectionString.cs

@@ -1,4 +1,4 @@
-namespace EnvelopeGenerator.GeneratorAPI.Models;
+namespace EnvelopeGenerator.API.Models;
 
 /// <summary>
 /// 

EnvelopeGenerator.API/Models/ContactLink.cs

@@ -1,4 +1,4 @@
-namespace EnvelopeGenerator.GeneratorAPI.Models
+namespace EnvelopeGenerator.API.Models
 {
     /// <summary>
     /// Represents a hyperlink for contact purposes with various HTML attributes.

EnvelopeGenerator.API/Models/Culture.cs

@@ -1,6 +1,6 @@
 using System.Globalization;
 
-namespace EnvelopeGenerator.GeneratorAPI.Models;
+namespace EnvelopeGenerator.API.Models;
 
 public class Culture
 {

EnvelopeGenerator.API/Models/Cultures.cs

@@ -1,4 +1,4 @@
-namespace EnvelopeGenerator.GeneratorAPI.Models;
+namespace EnvelopeGenerator.API.Models;
 
 public class Cultures : List<Culture>
 {

EnvelopeGenerator.API/Models/CustomImages.cs

@@ -1,4 +1,4 @@
-namespace EnvelopeGenerator.GeneratorAPI.Models;
+namespace EnvelopeGenerator.API.Models;
 
 public class CustomImages : Dictionary<string, Image>
 {

EnvelopeGenerator.API/Models/ErrorViewModel.cs

@@ -1,4 +1,4 @@
-namespace EnvelopeGenerator.GeneratorAPI.Models;
+namespace EnvelopeGenerator.API.Models;
 
 public class ErrorViewModel
 {

EnvelopeGenerator.API/Models/Image.cs

@@ -1,4 +1,4 @@
-namespace EnvelopeGenerator.GeneratorAPI.Models;
+namespace EnvelopeGenerator.API.Models;
 
 public class Image
 {

EnvelopeGenerator.API/Models/Login.cs

@@ -1,6 +1,6 @@
 using System.ComponentModel.DataAnnotations;
 
-namespace EnvelopeGenerator.GeneratorAPI.Models;
+namespace EnvelopeGenerator.API.Models;
 
 /// <summary>
 /// Repräsentiert ein Login-Modell mit erforderlichem Passwort und optionaler ID und Benutzername.

EnvelopeGenerator.API/Models/MainViewModel.cs

@@ -1,4 +1,4 @@
-namespace EnvelopeGenerator.GeneratorAPI.Models;
+namespace EnvelopeGenerator.API.Models;
 
 public class MainViewModel
 {

EnvelopeGenerator.API/Models/PsPdfKitAnnotation/Annotation.cs

@@ -1,6 +1,7 @@
-using System.Text.Json.Serialization;
+using EnvelopeGenerator.API.Models.PsPdfKitAnnotation;
+using System.Text.Json.Serialization;
 
-namespace EnvelopeGenerator.GeneratorAPI.Models.PsPdfKitAnnotation;
+namespace EnvelopeGenerator.API.Models.PsPdfKitAnnotation;
 
 public record Annotation : IAnnotation
 {

EnvelopeGenerator.API/Models/PsPdfKitAnnotation/AnnotationParams.cs

@@ -1,6 +1,7 @@
-using System.Text.Json.Serialization;
+using EnvelopeGenerator.API.Models.PsPdfKitAnnotation;
+using System.Text.Json.Serialization;
 
-namespace EnvelopeGenerator.GeneratorAPI.Models.PsPdfKitAnnotation;
+namespace EnvelopeGenerator.API.Models.PsPdfKitAnnotation;
 
 public class AnnotationParams
 {

EnvelopeGenerator.API/Models/PsPdfKitAnnotation/Background.cs

@@ -1,6 +1,6 @@
 using System.Text.Json.Serialization;
 
-namespace EnvelopeGenerator.GeneratorAPI.Models.PsPdfKitAnnotation;
+namespace EnvelopeGenerator.API.Models.PsPdfKitAnnotation;
 
 /// <summary>
 /// The Background is an annotation for the PSPDF Kit. However, it has no function.

EnvelopeGenerator.API/Models/PsPdfKitAnnotation/Color.cs

@@ -1,4 +1,4 @@
-namespace EnvelopeGenerator.GeneratorAPI.Models.PsPdfKitAnnotation;
+namespace EnvelopeGenerator.API.Models.PsPdfKitAnnotation;
 
 public record Color
 {

EnvelopeGenerator.API/Models/PsPdfKitAnnotation/Extensions.cs

@@ -1,4 +1,4 @@
-namespace EnvelopeGenerator.GeneratorAPI.Models.PsPdfKitAnnotation;
+namespace EnvelopeGenerator.API.Models.PsPdfKitAnnotation;
 
 public static class Extensions
 {

EnvelopeGenerator.API/Models/PsPdfKitAnnotation/IAnnotation.cs

@@ -1,4 +1,4 @@
-namespace EnvelopeGenerator.GeneratorAPI.Models.PsPdfKitAnnotation;
+namespace EnvelopeGenerator.API.Models.PsPdfKitAnnotation;
 
 public interface IAnnotation
 {

EnvelopeGenerator.API/Models/TFARegParams.cs

@@ -1,4 +1,4 @@
-namespace EnvelopeGenerator.GeneratorAPI.Models;
+namespace EnvelopeGenerator.API.Models;
 
 /// <summary>
 /// Represents the parameters for two-factor authentication (2FA) registration.

EnvelopeGenerator.API/Program.cs

@@ -1,6 +1,7 @@
 using DigitalData.Core.API;
 using DigitalData.Core.Application;
 using EnvelopeGenerator.Infrastructure;
+using EnvelopeGenerator.Domain.Constants;
 using Microsoft.AspNetCore.Authentication.Cookies;
 using Microsoft.AspNetCore.Localization;
 using Microsoft.EntityFrameworkCore;
@@ -11,11 +12,11 @@ using DigitalData.UserManager.DependencyInjection;
 using EnvelopeGenerator.Application;
 using DigitalData.Auth.Client;
 using DigitalData.Core.Abstractions;
-using EnvelopeGenerator.GeneratorAPI.Models;
+using EnvelopeGenerator.API.Models;
 using Microsoft.AspNetCore.Authentication.JwtBearer;
 using Microsoft.IdentityModel.Tokens;
 using DigitalData.Core.Abstractions.Security.Extensions;
-using EnvelopeGenerator.GeneratorAPI.Middleware;
+using EnvelopeGenerator.API.Middleware;
 using NLog.Web;
 using NLog;
 
@@ -26,6 +27,8 @@ try
 {
     var builder = WebApplication.CreateBuilder(args);
 
+    builder.Configuration.AddJsonFile("yarp.json", optional: true, reloadOnChange: true);
+
     builder.Logging.SetMinimumLevel(Microsoft.Extensions.Logging.LogLevel.Trace);
 
     if (!builder.Environment.IsDevelopment())
@@ -39,6 +42,8 @@ try
     var deferredProvider = new DeferredServiceProvider();
 
     builder.Services.AddControllers();
+    builder.Services.AddHttpClient();
+    builder.Services.AddReverseProxy().LoadFromConfig(builder.Configuration.GetSection("ReverseProxy"));
 
     // CORS Policy
     var allowedOrigins = config.GetSection("AllowedOrigins").Get<string[]>() ??
@@ -89,7 +94,7 @@ try
             {
                 Reference = new OpenApiReference
                 {
-                    Type = ReferenceType.SecurityScheme,
+                    Type = Microsoft.OpenApi.Models.ReferenceType.SecurityScheme,
                     Id = "Bearer"
                 }
             },
@@ -102,6 +107,8 @@ try
         {
             options.IncludeXmlComments(xmlFile);
         }
+
+        options.DocumentFilter<EnvelopeGenerator.API.Documentation.AuthProxyDocumentFilter>();
     });
     builder.Services.AddOpenApi();
 
@@ -170,6 +177,16 @@ try
         options.SlidingExpiration = true;
     });
 
+    builder.Services.AddAuthorizationBuilder()
+        .AddPolicy(AuthPolicy.SenderOrReceiver, policy =>
+            policy.RequireRole(Role.Sender, Role.Receiver.Full))
+        .AddPolicy(AuthPolicy.Sender, policy =>
+            policy.RequireRole(Role.Sender))
+        .AddPolicy(AuthPolicy.Receiver, policy =>
+            policy.RequireRole(Role.Receiver.Full))
+        .AddPolicy(AuthPolicy.ReceiverTFA, policy =>
+            policy.RequireRole(Role.Receiver.TFA));
+
     // User manager
 #pragma warning disable CS0618 // Type or member is obsolete
     builder.Services.AddUserManager<EGDbContext>();
@@ -241,6 +258,7 @@ try
     app.UseAuthentication();
     app.UseAuthorization();
 
+    app.MapReverseProxy();
     app.MapControllers();
 
     app.Run();

EnvelopeGenerator.API/appsettings.Development.json

@@ -6,11 +6,11 @@
     }
   },
   "AuthClientParams": {
-    "Url": "https://localhost:7192/auth-hub",
+    "Url": "http://172.24.12.39:9090/auth-hub",
     "PublicKeys": [
       {
         "Issuer": "auth.digitaldata.works",
-        "Audience": "sign-flow-gen.digitaldata.works"
+        "Audience": "sign-flow.digitaldata.works"
       }
     ],
     "RetryDelay": "00:00:05"

EnvelopeGenerator.API/appsettings.json

@@ -9,7 +9,7 @@
     }
   },
   "AllowedHosts": "*",
-  "AllowedOrigins": [ "http://localhost:4200" ],
+  "AllowedOrigins": [ "http://localhost:4200", "http://172.24.12.39:9090", "https://localhost:8088", "http://localhost:5131", "http://localhost:7192" ],
   "ConnectionStrings": {
     "Default": "Server=SDD-VMP04-SQL17\\DD_DEVELOP01;Database=DD_ECM;User Id=sa;Password=dd;Encrypt=false;TrustServerCertificate=True;",
     "DbMigrationTest": "Server=SDD-VMP04-SQL17\\DD_DEVELOP01;Database=DD_ECM_DATA_MIGR_TEST;User Id=sa;Password=dd;Encrypt=false;TrustServerCertificate=True;"
@@ -24,11 +24,11 @@
     }
   },
   "AuthClientParams": {
-    "Url": "https://localhost:7192/auth-hub",
+    "Url": "http://172.24.12.39:9090/auth-hub",
     "PublicKeys": [
       {
         "Issuer": "auth.digitaldata.works",
-        "Audience": "sign-flow-gen.digitaldata.works"
+        "Audience": "sign-flow.digitaldata.works"
       }
     ],
     "RetryDelay": "00:00:05"
@@ -37,7 +37,7 @@
     "Cookie": "AuthToken",
     "QueryString": "AuthToken",
     "Issuer": "auth.digitaldata.works",
-    "Audience": "work-flow.digitaldata.works"
+    "Audience": "sign-flow.digitaldata.works"
   },
   "PSPDFKitLicenseKey": "SXCtGGY9XA-31OGUXQK-r7c6AkdLGPm2ljuyDr1qu0kkhLvydg-Do-fxpNUF4Rq3fS_xAnZRNFRHbXpE6sQ2BMcCSVTcXVJO6tPviexjpiT-HnrDEySlUERJnnvh-tmeOWprxS6BySPnSILkmaVQtUfOIUS-cUbvvEYHTvQBKbSF8di4XHQFyfv49ihr51axm3NVV3AXwh2EiKL5C5XdqBZ4sQ4O7vXBjM2zvxdPxlxdcNYmiU83uAzw7B83O_jubPzya4CdUHh_YH7Nlp2gP56MeG1Sw2JhMtfG3Rj14Sg4ctaeL9p6AEWca5dDjJ2li5tFIV2fQSsw6A_cowLu0gtMm5i8IfJXeIcQbMC2-0wGv1oe9hZYJvFMdzhTM_FiejM0agemxt3lJyzuyP8zbBSOgp7Si6A85krLWPZptyZBTG7pp7IHboUHfPMxCXqi-zMsqewOJtQBE2mjntU-lPryKnssOpMPfswwQX7QSkJYV5EMqNmEhQX6mEkp2wcqFzMC7bJQew1aO4pOpvChUaMvb1vgRek0HxLag0nwQYX2YrYGh7F_xXJs-8HNwJe8H0-eW4x4faayCgM5rB5772CCCsD9ThZcvXFrjNHHLGJ8WuBUFm6LArvSfFQdii_7j-_sqHMpeKZt26NFgivj1A==",
   "Content-Security-Policy": [ // The first format parameter {0} will be replaced by the nonce value.

EnvelopeGenerator.API/yarp.json

@@ -0,0 +1,25 @@
+{
+  "ReverseProxy": {
+    "Routes": {
+      "auth-login": {
+        "ClusterId": "auth-hub",
+        "Match": {
+          "Path": "/api/auth",
+          "Methods": [ "POST" ]
+        },
+        "Transforms": [
+          { "PathSet": "/api/auth/sign-flow" }
+        ]
+      }
+    },
+    "Clusters": {
+      "auth-hub": {
+        "Destinations": {
+          "primary": {
+            "Address": "http://172.24.12.39:9090"
+          }
+        }
+      }
+    }
+  }
+}

EnvelopeGenerator.Application/Common/Commands/CreateCommandHandler.cs

@@ -0,0 +1,36 @@
+using DigitalData.Core.Abstraction.Application.Repository;
+using MediatR;
+
+namespace EnvelopeGenerator.Application.Common.Commands;
+
+/// <summary>
+/// 
+/// </summary>
+/// <typeparam name="TCommand"></typeparam>
+/// <typeparam name="TEntity"></typeparam>
+public class CreateCommandHandler<TCommand, TEntity> : IRequestHandler<TCommand, TEntity>
+    where TCommand : class, IRequest<TEntity>
+    where TEntity : class
+{
+    /// <summary>
+    /// 
+    /// </summary>
+    protected readonly IRepository<TEntity> Repository;
+
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="repository"></param>
+    public CreateCommandHandler(IRepository<TEntity> repository)
+    {
+        Repository = repository;
+    }
+
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="request"></param>
+    /// <param name="cancel"></param>
+    /// <returns></returns>
+    public Task<TEntity> Handle(TCommand request, CancellationToken cancel) => Repository.CreateAsync(request, cancel);
+}

EnvelopeGenerator.Application/Common/Commands/UpdateCommand.cs

@@ -0,0 +1,59 @@
+using DigitalData.Core.Abstraction.Application.Repository;
+using MediatR;
+using System.Linq.Expressions;
+
+namespace EnvelopeGenerator.Application.Common.Commands;
+
+/// <summary>
+/// 
+/// </summary>
+/// <typeparam name="TUpdateDto"></typeparam>
+/// <typeparam name="TEntity"></typeparam>
+public abstract record UpdateCommand<TUpdateDto, TEntity> : IRequest where TUpdateDto : class where TEntity : class
+{
+    /// <summary>
+    /// 
+    /// </summary>
+    public TUpdateDto Update { get; init; } = null!;
+
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <returns></returns>
+    public abstract Expression<Func<TEntity, bool>> BuildQueryExpression();
+}
+
+/// <summary>
+/// 
+/// </summary>
+/// <typeparam name="TCommand"></typeparam>
+/// <typeparam name="TUpdateDto"></typeparam>
+/// <typeparam name="TEntity"></typeparam>
+public class UpdateCommandHandler<TCommand, TUpdateDto, TEntity> : IRequestHandler<TCommand>
+    where TUpdateDto : class
+    where TEntity : class
+    where TCommand : UpdateCommand<TUpdateDto, TEntity>
+{
+    /// <summary>
+    /// 
+    /// </summary>
+    protected readonly IRepository<TEntity> Repository;
+
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="repository"></param>
+    public UpdateCommandHandler(IRepository<TEntity> repository)
+    {
+        Repository = repository;
+    }
+
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="request"></param>
+    /// <param name="cancel"></param>
+    /// <returns></returns>
+    public Task Handle(TCommand request, CancellationToken cancel)
+        => Repository.UpdateAsync(request.Update, request.BuildQueryExpression(), cancel);
+}

EnvelopeGenerator.Application/Common/Dto/EmailTemplateDto.cs

@@ -1,31 +1,37 @@
-using Microsoft.AspNetCore.Mvc;
+namespace EnvelopeGenerator.Application.Common.Dto;
 
-namespace EnvelopeGenerator.Application.Common.Dto
+/// <summary>
+/// 
+/// </summary>
+public record EmailTemplateDto
 {
     /// <summary>
     /// 
     /// </summary>
-    [ApiExplorerSettings(IgnoreApi = true)]
-    public record EmailTemplateDto
-    {
-        /// <summary>
-        /// 
-        /// </summary>
-        public int Id{ get; init; }
+    public int Id { get; init; }
 
-        /// <summary>
-        /// 
-        /// </summary>
-        public required string Name { get; init; }
+    /// <summary>
+    /// 
+    /// </summary>
+    public required string Name { get; init; }
 
-        /// <summary>
-        /// 
-        /// </summary>
-        public required string Body { get; set; }
+    /// <summary>
+    /// Das Datum und die Uhrzeit, wann die Vorlage hinzugefügt wurde.
+    /// </summary>
+    public DateTime AddedWhen { get; init; }
 
-        /// <summary>
-        /// 
-        /// </summary>
-        public required string Subject { get; set; }
-    };
-}
+    /// <summary>
+    /// Der Inhalt (Body) der E-Mail-Vorlage. Kann null sein.
+    /// </summary>
+    public string? Body { get; init; }
+
+    /// <summary>
+    /// Der Betreff der E-Mail-Vorlage. Kann null sein.
+    /// </summary>
+    public string? Subject { get; init; }
+
+    /// <summary>
+    /// Das Datum und die Uhrzeit, wann die Vorlage zuletzt geändert wurde. Kann null sein.
+    /// </summary>
+    public DateTime? ChangedWhen { get; init; }
+};

EnvelopeGenerator.Application/Common/Dto/MappingProfile.cs

@@ -28,8 +28,8 @@ public class MappingProfile : Profile
         CreateMap<EmailTemplate, EmailTemplateDto>();
         CreateMap<Envelope, EnvelopeDto>();
         CreateMap<Document, DocumentDto>();
-        CreateMap<Domain.Entities.History, HistoryDto>();
-        CreateMap<Domain.Entities.History, HistoryCreateDto>();
+        CreateMap<Domain.Entities.History, HistoryDto>().ForMember(dest => dest.ActionDate, opt => opt.MapFrom(src => src.ChangedWhen));
+        CreateMap<Domain.Entities.History, HistoryCreateDto>().ForMember(dest => dest.ActionDate, opt => opt.MapFrom(src => src.ChangedWhen));
         CreateMap<Domain.Entities.EnvelopeReceiver, EnvelopeReceiverDto>();
         CreateMap<Domain.Entities.EnvelopeReceiver, EnvelopeReceiverSecretDto>();
         CreateMap<EnvelopeType, EnvelopeTypeDto>();
@@ -44,15 +44,15 @@ public class MappingProfile : Profile
         CreateMap<EmailTemplateDto, EmailTemplate>();
         CreateMap<EnvelopeDto, Envelope>();
         CreateMap<DocumentDto, Document>();
-        CreateMap<HistoryDto, Domain.Entities.History>();
-        CreateMap<HistoryCreateDto, Domain.Entities.History>();
+        CreateMap<HistoryDto, Domain.Entities.History>().ForMember(dest => dest.ChangedWhen, opt => opt.MapFrom(src => src.ActionDate));
+        CreateMap<HistoryCreateDto, Domain.Entities.History>().ForMember(dest => dest.ChangedWhen, opt => opt.MapFrom(src => src.ActionDate));
         CreateMap<EnvelopeReceiverDto, Domain.Entities.EnvelopeReceiver>();
         CreateMap<EnvelopeTypeDto, EnvelopeType>();
         CreateMap<ReceiverDto, Domain.Entities.Receiver>().ForMember(rcv => rcv.EnvelopeReceivers, rcvReadDto => rcvReadDto.Ignore());
         CreateMap<EnvelopeReceiverReadOnlyCreateDto, Domain.Entities.EnvelopeReceiverReadOnly>();
         CreateMap<EnvelopeReceiverReadOnlyUpdateDto, Domain.Entities.EnvelopeReceiverReadOnly>();
         CreateMap<AnnotationCreateDto, ElementAnnotation>()
-            .ForMember(dest => dest.AddedWhen, opt => opt.MapFrom(_ => DateTime.UtcNow));
+            .MapAddedWhen();
 
         // Messaging mappings
         // for GTX messaging

EnvelopeGenerator.Application/Common/Extensions/AutoMapperAuditingExtensions.cs

@@ -0,0 +1,24 @@
+using AutoMapper;
+using EnvelopeGenerator.Domain.Interfaces.Auditing;
+
+namespace EnvelopeGenerator.Application.Common.Extensions;
+
+/// <summary>
+/// Extension methods for applying auditing timestamps during AutoMapper mappings.
+/// </summary>
+public static class AutoMapperAuditingExtensions
+{
+    /// <summary>
+    /// Maps <see cref="IHasAddedWhen.AddedWhen"/> to the current UTC time.
+    /// </summary>
+    public static IMappingExpression<TSource, TDestination> MapAddedWhen<TSource, TDestination>(this IMappingExpression<TSource, TDestination> expression)
+        where TDestination : IHasAddedWhen
+        => expression.ForMember(dest => dest.AddedWhen, opt => opt.MapFrom(_ => DateTime.UtcNow));
+
+    /// <summary>
+    /// Maps <see cref="IHasChangedWhen.ChangedWhen"/> to the current UTC time.
+    /// </summary>
+    public static IMappingExpression<TSource, TDestination> MapChangedWhen<TSource, TDestination>(this IMappingExpression<TSource, TDestination> expression)
+        where TDestination : IHasChangedWhen
+        => expression.ForMember(dest => dest.ChangedWhen, opt => opt.MapFrom(_ => DateTime.UtcNow));
+}

EnvelopeGenerator.Application/Common/Extensions/LoggerExtensions.cs

@@ -3,8 +3,19 @@ using System.Text;
 
 namespace EnvelopeGenerator.Application.Common.Extensions
 {
+    /// <summary>
+    /// 
+    /// </summary>
     public static class LoggerExtensions
     {
+        /// <summary>
+        /// 
+        /// </summary>
+        /// <param name="logger"></param>
+        /// <param name="envelopeReceiverId"></param>
+        /// <param name="exception"></param>
+        /// <param name="message"></param>
+        /// <param name="args"></param>
         public static void LogEnvelopeError(this ILogger logger, string envelopeReceiverId, Exception? exception = null, string? message = null, params object?[] args)
         {
             var sb = new StringBuilder().AppendLine(envelopeReceiverId.DecodeEnvelopeReceiverId().ToTitle());
@@ -18,6 +29,15 @@ namespace EnvelopeGenerator.Application.Common.Extensions
                 logger.Log(LogLevel.Error, exception, sb.AppendLine(exception.Message).ToString(), args);
         }
 
+        /// <summary>
+        /// 
+        /// </summary>
+        /// <param name="logger"></param>
+        /// <param name="uuid"></param>
+        /// <param name="signature"></param>
+        /// <param name="exception"></param>
+        /// <param name="message"></param>
+        /// <param name="args"></param>
         public static void LogEnvelopeError(this ILogger logger, string? uuid, string? signature = null, Exception? exception = null, string? message = null, params object?[] args)
         {
             var sb = new StringBuilder($"Envelope Uuid: {uuid}");
@@ -34,6 +54,11 @@ namespace EnvelopeGenerator.Application.Common.Extensions
                 logger.Log(LogLevel.Error, exception, sb.ToString(), args);
         }
 
+        /// <summary>
+        /// 
+        /// </summary>
+        /// <param name="envelopeReceiverTuple"></param>
+        /// <returns></returns>
         public static string ToTitle(this (string? UUID, string? Signature) envelopeReceiverTuple)
         {
             return $"UUID is {envelopeReceiverTuple.UUID} and signature is {envelopeReceiverTuple.Signature}";

EnvelopeGenerator.Application/Common/Extensions/XSSExtensions.cs

@@ -2,16 +2,42 @@
 using Microsoft.Extensions.Localization;
 using System.Text.Encodings.Web;
 
-namespace EnvelopeGenerator.Application.Common.Extensions
+namespace EnvelopeGenerator.Application.Common.Extensions;
+
+/// <summary>
+/// 
+/// </summary>
+public static class XSSExtensions
 {
-    public static class XSSExtensions
-    {
-        public static string? TryEncode(this string? value, UrlEncoder encoder) => value is null ? value : encoder.Encode(value);
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="value"></param>
+    /// <param name="encoder"></param>
+    /// <returns></returns>
+    public static string? TryEncode(this string? value, UrlEncoder encoder) => value is null ? value : encoder.Encode(value);
 
-        public static string? TryEncode(this LocalizedString? value, UrlEncoder encoder) => value is null ? null : encoder.Encode(value);
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="value"></param>
+    /// <param name="encoder"></param>
+    /// <returns></returns>
+    public static string? TryEncode(this LocalizedString? value, UrlEncoder encoder) => value is null ? null : encoder.Encode(value);
 
-        public static string? TrySanitize(this string? html, HtmlSanitizer sanitizer) => html is null ? html : sanitizer.Sanitize(html);
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="html"></param>
+    /// <param name="sanitizer"></param>
+    /// <returns></returns>
+    public static string? TrySanitize(this string? html, HtmlSanitizer sanitizer) => html is null ? html : sanitizer.Sanitize(html);
 
-        public static string? TrySanitize(this LocalizedString? html, HtmlSanitizer sanitizer) => html is null ? null : sanitizer.Sanitize(html);
-    }
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="html"></param>
+    /// <param name="sanitizer"></param>
+    /// <returns></returns>
+    public static string? TrySanitize(this LocalizedString? html, HtmlSanitizer sanitizer) => html is null ? null : sanitizer.Sanitize(html);
 }

EnvelopeGenerator.Application/DocStatus/Commands/CreateDocStatusCommand.cs

@@ -1,12 +1,31 @@
-namespace EnvelopeGenerator.Application.DocStatus.Commands;
+using DigitalData.Core.Abstraction.Application.Repository;
+using EnvelopeGenerator.Application.Common.Commands;
+using EnvelopeGenerator.Domain.Entities;
+using MediatR;
+
+namespace EnvelopeGenerator.Application.DocStatus.Commands;
 
 /// <summary>
 /// 
 /// </summary>
-public record CreateDocStatusCommand : ModifyDocStatusCommandBase
+public record CreateDocStatusCommand : ModifyDocStatusCommandBase, IRequest<DocumentStatus>
 {
     /// <summary>
     /// Gets timestamp when this record was added. Returns the StatusChangedWhen value.
     /// </summary>
     public DateTime AddedWhen => StatusChangedWhen;
+}
+
+/// <summary>
+/// 
+/// </summary>
+public class CreateDocStatusCommandHandler : CreateCommandHandler<CreateDocStatusCommand, DocumentStatus>
+{
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="repository"></param>
+    public CreateDocStatusCommandHandler(IRepository<DocumentStatus> repository) : base(repository)
+    {
+    }
 }

EnvelopeGenerator.Application/DocStatus/MappingProfile.cs

@@ -1,4 +1,5 @@
 using AutoMapper;
+using EnvelopeGenerator.Application.Common.Extensions;
 using EnvelopeGenerator.Application.DocStatus.Commands;
 using EnvelopeGenerator.Domain.Entities;
 
@@ -16,10 +17,12 @@ public class MappingProfile : Profile
     {
         CreateMap<CreateDocStatusCommand, DocumentStatus>()
         .ForMember(dest => dest.Envelope, opt => opt.Ignore())
-        .ForMember(dest => dest.Receiver, opt => opt.Ignore());
+        .ForMember(dest => dest.Receiver, opt => opt.Ignore())
+        .MapAddedWhen();
 
         CreateMap<UpdateDocStatusCommand, DocumentStatus>()
         .ForMember(dest => dest.Envelope, opt => opt.Ignore())
-        .ForMember(dest => dest.Receiver, opt => opt.Ignore());
+        .ForMember(dest => dest.Receiver, opt => opt.Ignore())
+        .MapChangedWhen();
     }
 }

EnvelopeGenerator.Application/Documents/Queries/ReadDocumentQuery.cs

@@ -4,6 +4,7 @@ using EnvelopeGenerator.Domain.Entities;
 using Microsoft.EntityFrameworkCore;
 using AutoMapper;
 using EnvelopeGenerator.Application.Common.Dto;
+using DigitalData.Core.Exceptions;
 
 namespace EnvelopeGenerator.Application.Documents.Queries;
 
@@ -12,14 +13,14 @@ namespace EnvelopeGenerator.Application.Documents.Queries;
 /// </summary>
 /// <param name="Id">The unique identifier of the document. Optional.</param>
 /// <param name="EnvelopeId">The identifier of the envelope associated with the document. Optional.</param>
-public record ReadDocumentQuery(int? Id = null, int? EnvelopeId = null) : IRequest<DocumentDto?>
+public record ReadDocumentQuery(int? Id = null, int? EnvelopeId = null) : IRequest<DocumentDto>
 {
 }
 
 /// <summary>
 /// Handles queries for reading <see cref="Document"/> data based on either the document ID or the envelope ID.
 /// </summary>
-public class ReadDocumentQueryHandler : IRequestHandler<ReadDocumentQuery, DocumentDto?>
+public class ReadDocumentQueryHandler : IRequestHandler<ReadDocumentQuery, DocumentDto>
 {
     /// <summary>
     /// TempRepo for accessing <see cref="Document"/> entities.
@@ -50,20 +51,19 @@ public class ReadDocumentQueryHandler : IRequestHandler<ReadDocumentQuery, Docum
     /// <exception cref="InvalidOperationException">
     /// Thrown when neither <see cref="ReadDocumentQuery.Id"/> nor <see cref="ReadDocumentQuery.EnvelopeId"/> is provided.
     /// </exception>
-    public async Task<DocumentDto?> Handle(ReadDocumentQuery query, CancellationToken cancel)
+    public async Task<DocumentDto> Handle(ReadDocumentQuery query, CancellationToken cancel)
     {
         if (query.Id is not null)
         {
-            var doc = await _repo.ReadOnly().Where(d => d.Id == query.Id).FirstOrDefaultAsync(cancel);
+            var doc = await _repo.Query.Where(d => d.Id == query.Id).FirstOrDefaultAsync(cancel);
             return _mapper.Map<DocumentDto>(doc);
         }            
         else if (query.EnvelopeId is not null)
         {
-            var doc = await _repo.ReadOnly().Where(d => d.EnvelopeId == query.EnvelopeId).FirstOrDefaultAsync(cancel);
+            var doc = await _repo.Query.Where(d => d.EnvelopeId == query.EnvelopeId).FirstOrDefaultAsync(cancel);
             return _mapper.Map<DocumentDto>(doc);
         }
 
-        throw new InvalidOperationException(
-            $"Invalid {nameof(ReadDocumentQuery)}: either {nameof(query.Id)} or {nameof(query.EnvelopeId)} must be provided.");
+        throw new NotFoundException();
     }
 }

EnvelopeGenerator.Application/EmailTemplates/Commands/Reset/ResetEmailTemplateCommand.cs

@@ -1,41 +0,0 @@
-using EnvelopeGenerator.Domain;
-using EnvelopeGenerator.Domain.Constants;
-using MediatR;
-
-namespace EnvelopeGenerator.Application.EmailTemplates.Commands.Reset;
-
-/// <summary>
-/// Ein Befehl zum Zurücksetzen einer E-Mail-Vorlage auf die Standardwerte.
-/// Erbt von <see cref="EmailTemplateQuery"/> und ermöglicht die Angabe einer optionalen ID und eines Typs der E-Mail-Vorlage.<br/><br/>
-/// Beispiele:<br/>
-/// 0 - DocumentReceived: Benachrichtigung über den Empfang eines Dokuments.<br/>
-/// 1 - DocumentSigned: Benachrichtigung über die Unterzeichnung eines Dokuments.<br/>
-/// 2 - DocumentDeleted: Benachrichtigung über das Löschen eines Dokuments.<br/>
-/// 3 - DocumentCompleted: Benachrichtigung über den Abschluss eines Dokuments.<br/>
-/// 4 - DocumentAccessCodeReceived: Benachrichtigung über den Erhalt eines Zugangscodes.<br/>
-/// 5 - DocumentShared: Benachrichtigung über das Teilen eines Dokuments.<br/>
-/// 6 - TotpSecret: Benachrichtigung über ein TOTP-Geheimnis.<br/>
-/// 7 - DocumentRejected_ADM (Für den Absender): Mail an den Absender, wenn das Dokument abgelehnt wird.<br/>
-/// 8 - DocumentRejected_REC (Für den ablehnenden Empfänger): Mail an den ablehnenden Empfänger, wenn das Dokument abgelehnt wird.<br/>
-/// 9 - DocumentRejected_REC_2 (Für sonstige Empfänger): Mail an andere Empfänger (Brief), wenn das Dokument abgelehnt wird.<br/>
-/// </summary>
-public record ResetEmailTemplateCommand : EmailTemplateQuery, IRequest
-{
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="orginal"></param>
-    public ResetEmailTemplateCommand(EmailTemplateQuery? orginal = null) : base(orginal ?? new())
-    {
-
-    }
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="Id">Die optionale ID der E-Mail-Vorlage, die zurückgesetzt werden soll.</param>
-    /// <param name="Type">Der Typ der E-Mail-Vorlage, z. B. <see cref="EmailTemplateType"/> (optional).</param>
-    public ResetEmailTemplateCommand(int? Id = null, EmailTemplateType? Type = null) : base(Id, Type)
-    {
-    }
-};

EnvelopeGenerator.Application/EmailTemplates/Commands/ResetEmailTemplateCommand.cs

@@ -1,11 +1,38 @@
 using DigitalData.Core.Abstraction.Application.Repository;
+using EnvelopeGenerator.Domain.Constants;
+using MediatR;
 using EnvelopeGenerator.Application.Common.Dto;
 using EnvelopeGenerator.Domain.Entities;
-using MediatR;
 using Microsoft.EntityFrameworkCore;
-using System.Linq;
 
-namespace EnvelopeGenerator.Application.EmailTemplates.Commands.Reset;
+namespace EnvelopeGenerator.Application.EmailTemplates.Commands;
+
+/// <summary>
+/// Ein Befehl zum Zurücksetzen einer E-Mail-Vorlage auf die Standardwerte.
+/// Erbt von <see cref="IEmailTemplateQuery"/> und ermöglicht die Angabe einer optionalen ID und eines Typs der E-Mail-Vorlage.<br/><br/>
+/// </summary>
+public record ResetEmailTemplateCommand : IEmailTemplateQuery, IRequest
+{
+    /// <summary>
+    /// Die eindeutige Kennung der E-Mail-Vorlage (optional).
+    /// </summary>
+    public int? Id { get; set; }
+
+    /// <summary>
+    /// Der Typ der E-Mail-Vorlage, z. B. <see cref="EmailTemplateType"/> (optional). Beispiele:<br/>
+    /// 0 - DocumentReceived: Benachrichtigung über den Empfang eines Dokuments.<br/>
+    /// 1 - DocumentSigned: Benachrichtigung über die Unterzeichnung eines Dokuments.<br/>
+    /// 2 - DocumentDeleted: Benachrichtigung über das Löschen eines Dokuments.<br/>
+    /// 3 - DocumentCompleted: Benachrichtigung über den Abschluss eines Dokuments.<br/>
+    /// 4 - DocumentAccessCodeReceived: Benachrichtigung über den Erhalt eines Zugangscodes.<br/>
+    /// 5 - DocumentShared: Benachrichtigung über das Teilen eines Dokuments.<br/>
+    /// 6 - TotpSecret: Benachrichtigung über ein TOTP-Geheimnis.<br/>
+    /// 7 - DocumentRejected_ADM (für den Absender): Mail an den Absender, wenn das Dokument abgelehnt wird.<br/>
+    /// 8 - DocumentRejected_REC (für den ablehnenden Empfänger): Mail an den ablehnenden Empfänger, wenn das Dokument abgelehnt wird.<br/>
+    /// 9 - DocumentRejected_REC_2 (für sonstige Empfänger): Mail an andere Empfänger (Brief), wenn das Dokument abgelehnt wird.
+    /// </summary>
+    public EmailTemplateType? Type { get; set; }
+}
 
 /// <summary>
 /// 
@@ -41,7 +68,7 @@ public class ResetEmailTemplateCommandHandler : IRequestHandler<ResetEmailTempla
         foreach (var temp in temps)
         {
             var def = Defaults.Where(t => t.Name == temp.Name).FirstOrDefault();
-            if(def is not null)
+            if (def is not null)
                 await _repository.UpdateAsync(def, t => t.Id == temp.Id, cancel);
         }
     }
@@ -113,4 +140,4 @@ public class ResetEmailTemplateCommandHandler : IRequestHandler<ResetEmailTempla
         }
     };
 
-}
+}

EnvelopeGenerator.Application/EmailTemplates/Commands/Update/UpdateEmailTemplateCommand.cs

@@ -1,29 +0,0 @@
-using MediatR;
-using System.Text.Json.Serialization;
-
-namespace EnvelopeGenerator.Application.EmailTemplates.Commands.Update;
-
-
-/// <summary>
-/// Befehl zum Aktualisieren einer E-Mail-Vorlage.
-/// </summary>
-/// <param name="Body">
-/// (Optional)Der neue Inhalt des E-Mail-Textkörpers. Wenn null, bleibt der vorhandene Inhalt unverändert.
-/// </param>
-/// <param name="Subject">
-/// (Optional) Der neue Betreff der E-Mail. Wenn null, bleibt der vorhandene Betreff unverändert.
-/// </param>
-public record UpdateEmailTemplateCommand(string? Body = null, string? Subject = null) : IRequest
-{
-    /// <param>
-    /// Die Abfrage, die die E-Mail-Vorlage darstellt, die aktualisiert werden soll.
-    /// </param>
-    [JsonIgnore]
-    public EmailTemplateQuery? EmailTemplateQuery { get; set; }
-
-    /// <summary>
-    /// 
-    /// </summary>
-    [JsonIgnore]
-    public DateTime ChangedWhen { get; init; } = DateTime.Now;
-}

EnvelopeGenerator.Application/EmailTemplates/Commands/Update/UpdateEmailTemplateCommandHandler.cs

@@ -1,72 +0,0 @@
-using AutoMapper;
-using DigitalData.Core.Abstraction.Application.Repository;
-using DigitalData.Core.Exceptions;
-using EnvelopeGenerator.Domain.Entities;
-using MediatR;
-using Microsoft.EntityFrameworkCore;
-using EnvelopeGenerator.Domain.Constants;
-using EnvelopeGenerator.Application.Common.Dto;
-
-namespace EnvelopeGenerator.Application.EmailTemplates.Commands.Update;
-
-/// <summary>
-/// 
-/// </summary>
-public class UpdateEmailTemplateCommandHandler : IRequestHandler<UpdateEmailTemplateCommand>
-{
-    private readonly IRepository<EmailTemplate> _repository;
-    
-    private readonly IMapper _mapper;
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="repository"></param>
-    public UpdateEmailTemplateCommandHandler(IRepository<EmailTemplate> repository, IMapper mapper)
-    {
-        _repository = repository;
-        _mapper = mapper;
-    }
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="request"></param>
-    /// <param name="cancel"></param>
-    /// <returns></returns>
-    /// <exception cref="InvalidOperationException"></exception>
-    /// <exception cref="NotFoundException"></exception>
-    [Obsolete("Use Read-method returning IReadQuery<TEntity> instead.")]
-    public async Task Handle(UpdateEmailTemplateCommand request, CancellationToken cancel)
-    {
-        EmailTemplateDto? tempDto;
-
-        if (request.EmailTemplateQuery?.Id is int id)
-        {
-            var temp = await _repository.ReadOnly().Where(t => t.Id == id).FirstOrDefaultAsync(cancel);
-            tempDto = _mapper.Map<EmailTemplateDto>(temp);
-        }
-        else if (request!.EmailTemplateQuery!.Type is EmailTemplateType type)
-        {
-            var temp = await _repository.ReadOnly().Where(t => t.Name == type.ToString()).FirstOrDefaultAsync(cancel);
-            tempDto = _mapper.Map<EmailTemplateDto>(temp);
-        }
-        else
-        {
-            throw new InvalidOperationException("Both id and type is null. Id: " + request.EmailTemplateQuery.Id +". Type: " + request.EmailTemplateQuery.Type.ToString());
-        }
-
-        if (tempDto == null)
-        {
-            throw new NotFoundException();
-        }
-
-        if (request.Body is not null)
-            tempDto.Body = request.Body;
-
-        if (request.Subject is not null)
-            tempDto.Subject = request.Subject;
-
-        await _repository.UpdateAsync(tempDto, t => t.Id == tempDto.Id, cancel);
-    }
-}

EnvelopeGenerator.Application/EmailTemplates/Commands/UpdateEmailTemplateCommand.cs

@@ -0,0 +1,63 @@
+using DigitalData.Core.Abstraction.Application.Repository;
+using EnvelopeGenerator.Application.Common.Commands;
+using EnvelopeGenerator.Domain.Constants;
+using EnvelopeGenerator.Domain.Entities;
+using System.Linq.Expressions;
+
+namespace EnvelopeGenerator.Application.EmailTemplates.Commands;
+
+/// <summary>
+/// 
+/// </summary>
+/// <param name="Body"></param>
+/// <param name="Subject"></param>
+public record EmailTemplateUpdateDto(string Body, string Subject);
+
+/// <summary>
+/// Befehl zum Aktualisieren einer E-Mail-Vorlage.
+/// </summary>
+public record UpdateEmailTemplateCommand : UpdateCommand<EmailTemplateUpdateDto, EmailTemplate>, IEmailTemplateQuery
+{
+    /// <summary>
+    /// Die eindeutige Kennung der E-Mail-Vorlage (optional).
+    /// </summary>
+    public int? Id { get; set; }
+
+    /// <summary>
+    /// Der Typ der E-Mail-Vorlage, z. B. <see cref="EmailTemplateType"/> (optional). Beispiele:<br/>
+    /// 0 - DocumentReceived: Benachrichtigung über den Empfang eines Dokuments.<br/>
+    /// 1 - DocumentSigned: Benachrichtigung über die Unterzeichnung eines Dokuments.<br/>
+    /// 2 - DocumentDeleted: Benachrichtigung über das Löschen eines Dokuments.<br/>
+    /// 3 - DocumentCompleted: Benachrichtigung über den Abschluss eines Dokuments.<br/>
+    /// 4 - DocumentAccessCodeReceived: Benachrichtigung über den Erhalt eines Zugangscodes.<br/>
+    /// 5 - DocumentShared: Benachrichtigung über das Teilen eines Dokuments.<br/>
+    /// 6 - TotpSecret: Benachrichtigung über ein TOTP-Geheimnis.<br/>
+    /// 7 - DocumentRejected_ADM (für den Absender): Mail an den Absender, wenn das Dokument abgelehnt wird.<br/>
+    /// 8 - DocumentRejected_REC (für den ablehnenden Empfänger): Mail an den ablehnenden Empfänger, wenn das Dokument abgelehnt wird.<br/>
+    /// 9 - DocumentRejected_REC_2 (für sonstige Empfänger): Mail an andere Empfänger (Brief), wenn das Dokument abgelehnt wird.
+    /// </summary>
+    public EmailTemplateType? Type { get; set; }
+
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <returns></returns>
+    public override Expression<Func<EmailTemplate, bool>> BuildQueryExpression()
+        => Id is int id
+            ? temp => temp.Id == id
+            : temp => temp!.Name == Type.ToString();
+}
+
+/// <summary>
+/// 
+/// </summary>
+public class UpdateEmailTemplateCommandHandler : UpdateCommandHandler<UpdateEmailTemplateCommand, EmailTemplateUpdateDto, EmailTemplate>
+{
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="repository"></param>
+    public UpdateEmailTemplateCommandHandler(IRepository<EmailTemplate> repository) : base(repository)
+    {
+    }
+}

EnvelopeGenerator.Application/EmailTemplates/EmailTemplateQuery.cs

@@ -1,24 +0,0 @@
-using EnvelopeGenerator.Domain.Constants;
-
-namespace EnvelopeGenerator.Application.EmailTemplates;
-
-/// <summary>
-/// Repräsentiert eine Abfrage für E-Mail-Vorlagen, die für Absender und Empfänger von Umschlägen verwendet werden.
-/// Die Standardkultur ist "de-DE".
-/// </summary>
-/// <param name="Id">Die eindeutige Kennung der E-Mail-Vorlage (optional).</param>
-/// <param name="Type">Der Typ der E-Mail-Vorlage, z. B. <see cref="EmailTemplateType"/> (optional). Beispiele:
-/// 0 - DocumentReceived: Benachrichtigung über den Empfang eines Dokuments.
-/// 1 - DocumentSigned: Benachrichtigung über die Unterzeichnung eines Dokuments.
-/// 2 - DocumentDeleted: Benachrichtigung über das Löschen eines Dokuments.
-/// 3 - DocumentCompleted: Benachrichtigung über den Abschluss eines Dokuments.
-/// 4 - DocumentAccessCodeReceived: Benachrichtigung über den Erhalt eines Zugangscodes.
-/// 5 - DocumentShared: Benachrichtigung über das Teilen eines Dokuments.
-/// 6 - TotpSecret: Benachrichtigung über ein TOTP-Geheimnis.
-/// 7 - DocumentRejected_ADM (Für den Absender): Mail an den Absender, wenn das Dokument abgelehnt wird.
-/// 8 - DocumentRejected_REC (Für den ablehnenden Empfänger): Mail an den ablehnenden Empfänger, wenn das Dokument abgelehnt wird.
-/// 9 - DocumentRejected_REC_2 (Für sonstige Empfänger): Mail an andere Empfänger (Brief), wenn das Dokument abgelehnt wird.
-/// </param>
-public record EmailTemplateQuery(int? Id = null, EmailTemplateType? Type = null)
-{
-}

EnvelopeGenerator.Application/EmailTemplates/IEmailTemplateQuery.cs

@@ -0,0 +1,30 @@
+using EnvelopeGenerator.Domain.Constants;
+
+namespace EnvelopeGenerator.Application.EmailTemplates;
+
+/// <summary>
+/// Stellt eine Schnittstelle für Abfragen von E-Mail-Vorlagen dar, die für Absender und Empfänger von Umschlägen verwendet werden.
+/// Die Standardkultur ist "de-DE".
+/// </summary>
+public interface IEmailTemplateQuery
+{
+    /// <summary>
+    /// Die eindeutige Kennung der E-Mail-Vorlage (optional).
+    /// </summary>
+    int? Id { get; set; }
+
+    /// <summary>
+    /// Der Typ der E-Mail-Vorlage, z. B. <see cref="EmailTemplateType"/> (optional). Beispiele:<br/>
+    /// 0 - DocumentReceived: Benachrichtigung über den Empfang eines Dokuments.<br/>
+    /// 1 - DocumentSigned: Benachrichtigung über die Unterzeichnung eines Dokuments.<br/>
+    /// 2 - DocumentDeleted: Benachrichtigung über das Löschen eines Dokuments.<br/>
+    /// 3 - DocumentCompleted: Benachrichtigung über den Abschluss eines Dokuments.<br/>
+    /// 4 - DocumentAccessCodeReceived: Benachrichtigung über den Erhalt eines Zugangscodes.<br/>
+    /// 5 - DocumentShared: Benachrichtigung über das Teilen eines Dokuments.<br/>
+    /// 6 - TotpSecret: Benachrichtigung über ein TOTP-Geheimnis.<br/>
+    /// 7 - DocumentRejected_ADM (für den Absender): Mail an den Absender, wenn das Dokument abgelehnt wird.<br/>
+    /// 8 - DocumentRejected_REC (für den ablehnenden Empfänger): Mail an den ablehnenden Empfänger, wenn das Dokument abgelehnt wird.<br/>
+    /// 9 - DocumentRejected_REC_2 (für sonstige Empfänger): Mail an andere Empfänger (Brief), wenn das Dokument abgelehnt wird.
+    /// </summary>
+    EmailTemplateType? Type { get; set; }
+}

EnvelopeGenerator.Application/EmailTemplates/MappingProfile.cs

@@ -1,24 +1,24 @@
-using AutoMapper;
-using EnvelopeGenerator.Application.EmailTemplates.Queries.Read;
+using AutoMapper;
+using EnvelopeGenerator.Application.Common.Dto;
+using EnvelopeGenerator.Application.Common.Extensions;
+using EnvelopeGenerator.Application.EmailTemplates.Commands;
 using EnvelopeGenerator.Domain.Entities;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace EnvelopeGenerator.Application.EmailTemplates;
 
 /// <summary>
-/// 
+///
 /// </summary>
 public class MappingProfile : Profile
 {
     /// <summary>
-    /// 
+    ///
     /// </summary>
     public MappingProfile()
     {
-        CreateMap<EmailTemplate, ReadEmailTemplateResponse>();
+        CreateMap<EmailTemplate, EmailTemplateDto>();
+
+        CreateMap<EmailTemplateUpdateDto, EmailTemplate>()
+            .MapChangedWhen();
     }
-}
+}

EnvelopeGenerator.Application/EmailTemplates/Queries/Read/ReadEmailTemplateQuery.cs

@@ -1,12 +0,0 @@
-using MediatR;
-
-namespace EnvelopeGenerator.Application.EmailTemplates.Queries.Read;
-
-
-/// <summary>
-/// Stellt eine Abfrage dar, um eine E-Mail-Vorlage zu lesen.
-/// Diese Klasse erbt von <see cref="EmailTemplateQuery"/>.
-/// </summary>
-public record ReadEmailTemplateQuery : EmailTemplateQuery, IRequest<ReadEmailTemplateResponse?>
-{
-}

EnvelopeGenerator.Application/EmailTemplates/Queries/Read/ReadEmailTemplateQueryHandler.cs

@@ -1,52 +0,0 @@
-using AutoMapper;
-using EnvelopeGenerator.Application.Common.Interfaces.Repositories;
-using EnvelopeGenerator.Domain.Constants;
-using MediatR;
-
-namespace EnvelopeGenerator.Application.EmailTemplates.Queries.Read;
-
-/// <summary>
-/// 
-/// </summary>
-public class ReadEmailTemplateQueryHandler : IRequestHandler<ReadEmailTemplateQuery, ReadEmailTemplateResponse?>
-{
-    private readonly IMapper _mapper;
-
-    [Obsolete("Use Read-method returning IReadQuery<TEntity> instead.")]
-    private readonly IEmailTemplateRepository _repository;
-
-    /// <summary>
-    /// Initialisiert eine neue Instanz der <see cref="EmailTemplateController"/>-Klasse.
-    /// </summary>
-    /// <param name="mapper">
-    /// <param name="repository">
-    /// Die AutoMapper-Instanz, die zum Zuordnen von Objekten verwendet wird.
-    /// </param>
-    [Obsolete("Use Read-method returning IReadQuery<TEntity> instead.")]
-    public ReadEmailTemplateQueryHandler(IMapper mapper, IEmailTemplateRepository repository)
-    {
-        _mapper = mapper;
-        _repository = repository;
-    }
-
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <param name="request"></param>
-    /// <param name="cancellationToken"></param>
-    /// <returns></returns>
-    /// <exception cref="InvalidOperationException"></exception>
-    [Obsolete("Use IRepository")]
-    public async Task<ReadEmailTemplateResponse?> Handle(ReadEmailTemplateQuery request, CancellationToken cancellationToken)
-    {
-        var temp = request.Id is int id
-            ? await _repository.ReadByIdAsync(id)
-            : request.Type is EmailTemplateType type
-                ? await _repository.ReadByNameAsync(type)
-                : throw new InvalidOperationException("Either a valid integer ID or a valid EmailTemplateType must be provided in the request.");
-
-        var res = _mapper.Map<ReadEmailTemplateResponse>(temp);
-
-        return res;
-    }
-}

EnvelopeGenerator.Application/EmailTemplates/Queries/Read/ReadEmailTemplateResponse.cs

@@ -1,37 +0,0 @@
-namespace EnvelopeGenerator.Application.EmailTemplates.Queries.Read;
-
-/// <summary>
-/// Stellt die Antwort für eine Abfrage von E-Mail-Vorlagen bereit.
-/// </summary>
-public class ReadEmailTemplateResponse
-{
-    /// <summary>
-    /// Die eindeutige Kennung der E-Mail-Vorlage.
-    /// </summary>
-    public int Id { get; set; }
-
-    /// <summary>
-    /// Name des Typs
-    /// </summary>
-    public required string Name { get; set; }
-
-    /// <summary>
-    /// Das Datum und die Uhrzeit, wann die Vorlage hinzugefügt wurde.
-    /// </summary>
-    public DateTime AddedWhen { get; set; }
-
-    /// <summary>
-    /// Der Inhalt (Body) der E-Mail-Vorlage. Kann null sein.
-    /// </summary>
-    public string? Body { get; set; }
-
-    /// <summary>
-    /// Der Betreff der E-Mail-Vorlage. Kann null sein.
-    /// </summary>
-    public string? Subject { get; set; }
-
-    /// <summary>
-    /// Das Datum und die Uhrzeit, wann die Vorlage zuletzt geändert wurde. Kann null sein.
-    /// </summary>
-    public DateTime? ChangedWhen { get; set; }
-}

EnvelopeGenerator.Application/EmailTemplates/Queries/ReadEmailTemplateQuery.cs

@@ -0,0 +1,78 @@
+using AutoMapper;
+using MediatR;
+using EnvelopeGenerator.Application.Common.Dto;
+using DigitalData.Core.Abstraction.Application.Repository;
+using EnvelopeGenerator.Domain.Entities;
+using Microsoft.EntityFrameworkCore;
+using EnvelopeGenerator.Domain.Constants;
+using DigitalData.Core.Exceptions;
+
+namespace EnvelopeGenerator.Application.EmailTemplates.Queries;
+
+/// <summary>
+/// Stellt eine Abfrage dar, um eine E-Mail-Vorlage zu lesen.
+/// Diese Klasse erbt von <see cref="IEmailTemplateQuery"/>.
+/// </summary>
+public record ReadEmailTemplateQuery : IEmailTemplateQuery, IRequest<EmailTemplateDto>
+{
+    /// <summary>
+    /// Die eindeutige Kennung der E-Mail-Vorlage (optional).
+    /// </summary>
+    public int? Id { get; set; }
+
+    /// <summary>
+    /// Der Typ der E-Mail-Vorlage, z. B. <see cref="EmailTemplateType"/> (optional). Beispiele:<br/>
+    /// 0 - DocumentReceived: Benachrichtigung über den Empfang eines Dokuments.<br/>
+    /// 1 - DocumentSigned: Benachrichtigung über die Unterzeichnung eines Dokuments.<br/>
+    /// 2 - DocumentDeleted: Benachrichtigung über das Löschen eines Dokuments.<br/>
+    /// 3 - DocumentCompleted: Benachrichtigung über den Abschluss eines Dokuments.<br/>
+    /// 4 - DocumentAccessCodeReceived: Benachrichtigung über den Erhalt eines Zugangscodes.<br/>
+    /// 5 - DocumentShared: Benachrichtigung über das Teilen eines Dokuments.<br/>
+    /// 6 - TotpSecret: Benachrichtigung über ein TOTP-Geheimnis.<br/>
+    /// 7 - DocumentRejected_ADM (für den Absender): Mail an den Absender, wenn das Dokument abgelehnt wird.<br/>
+    /// 8 - DocumentRejected_REC (für den ablehnenden Empfänger): Mail an den ablehnenden Empfänger, wenn das Dokument abgelehnt wird.<br/>
+    /// 9 - DocumentRejected_REC_2 (für sonstige Empfänger): Mail an andere Empfänger (Brief), wenn das Dokument abgelehnt wird.
+    /// </summary>
+    public EmailTemplateType? Type { get; set; }
+}
+
+/// <summary>
+/// 
+/// </summary>
+public class ReadEmailTemplateQueryHandler : IRequestHandler<ReadEmailTemplateQuery, EmailTemplateDto>
+{
+    private readonly IMapper _mapper;
+
+    private readonly IRepository<EmailTemplate> _repo;
+
+    /// <summary>
+    /// Initialisiert eine neue Instanz der <see cref="EmailTemplateController"/>-Klasse.
+    /// </summary>
+    /// <param name="mapper">
+    /// <param name="repo">
+    /// Die AutoMapper-Instanz, die zum Zuordnen von Objekten verwendet wird.
+    /// </param>
+    public ReadEmailTemplateQueryHandler(IMapper mapper, IRepository<EmailTemplate> repo)
+    {
+        _mapper = mapper;
+        _repo = repo;
+    }
+
+    /// <summary>
+    /// 
+    /// </summary>
+    /// <param name="request"></param>
+    /// <param name="cancel"></param>
+    /// <returns></returns>
+    /// <exception cref="InvalidOperationException"></exception>
+    public async Task<EmailTemplateDto> Handle(ReadEmailTemplateQuery request, CancellationToken cancel)
+    {
+        var query = request.Id is int id
+            ? _repo.Query.Where(temp => temp.Id == id)
+            : _repo.Query.Where(temp => temp.Name == request.Type!.ToString());
+
+        var entity = await query.FirstOrDefaultAsync(cancel) ?? throw new NotFoundException();
+
+        return _mapper.Map<EmailTemplateDto>(entity);
+    }
+}

EnvelopeGenerator.Application/EnvelopeReceivers/Queries/ReadEnvelopeReceiverQuery.cs

@@ -67,10 +67,11 @@ public static class Extensions
     /// <param name="key"></param>
     /// <param name="cancel"></param>
     /// <returns></returns>
-    public static Task<EnvelopeReceiverDto?> ReadEnvelopeReceiverAsync(this IMediator mediator, string key, CancellationToken cancel = default)
+    public static async Task<EnvelopeReceiverDto?> ReadEnvelopeReceiverAsync(this IMediator mediator, string key, CancellationToken cancel = default)
     {
         var q = new ReadEnvelopeReceiverQuery() { Key = key };
-        return mediator.Send(q, cancel).Then(envRcvs => envRcvs.FirstOrDefault());
+        var envRcvs = await mediator.Send(q, cancel);
+        return envRcvs.FirstOrDefault();
     }
 
     /// <summary>
@@ -81,12 +82,13 @@ public static class Extensions
     /// <param name="signature"></param>
     /// <param name="cancel"></param>
     /// <returns></returns>
-    public static Task<EnvelopeReceiverDto?> ReadEnvelopeReceiverAsync(this IMediator mediator, string uuid, string signature, CancellationToken cancel = default)
+    public static async Task<EnvelopeReceiverDto?> ReadEnvelopeReceiverAsync(this IMediator mediator, string uuid, string signature, CancellationToken cancel = default)
     {
         var q = new ReadEnvelopeReceiverQuery();
         q.Envelope.Uuid = uuid;
         q.Receiver.Signature = signature;
-        return mediator.Send(q, cancel).Then(envRcvs => envRcvs.FirstOrDefault());
+        var envRcvs = await mediator.Send(q, cancel);
+        return envRcvs.FirstOrDefault();
     }
     /// <summary>
     /// Verarbeitet <see cref="ReadEnvelopeReceiverQuery"/> und liefert passende <see cref="EnvelopeReceiverDto"/>-Ergebnisse.

EnvelopeGenerator.Application/EnvelopeReceivers/Queries/ReceiverAlreadySignedQuery.cs

@@ -68,6 +68,6 @@ public class ReceiverAlreadySignedQueryHandler : IRequestHandler<ReceiverAlready
     /// <returns></returns>
     public async Task<bool> Handle(ReceiverAlreadySignedQuery request, CancellationToken cancel = default)
     {
-        return await _repo.ReadOnly().Where(request).Where(h => h.Status == EnvelopeStatus.DocumentSigned).AnyAsync(cancel);
+        return await _repo.Query.Where(request).Where(h => h.Status == EnvelopeStatus.DocumentSigned).AnyAsync(cancel);
     }
 }

EnvelopeGenerator.Application/Histories/Commands/CreateHistoryCommand.cs

@@ -82,7 +82,7 @@ public class CreateHistoryCommandHandler : IRequestHandler<CreateHistoryCommand,
         if(request.UserReference is null)
         {
             var receivers = await _erRepo
-                .ReadOnly()
+                .Query
                 .Where(request)
                 .Include(er => er.Receiver)
                 .ToListAsync(cancel);

EnvelopeGenerator.Application/Receivers/Commands/CreateReceiverCommand.cs

@@ -67,6 +67,7 @@ public class CreateReceiverCommandHandler : IRequestHandler<CreateReceiverComman
     /// 
     /// </summary>
     /// <param name="repo"></param>
+    /// <param name="mapper"></param>
     public CreateReceiverCommandHandler(IRepository<Receiver> repo, IMapper mapper)
     {
         _repo = repo;
@@ -81,7 +82,7 @@ public class CreateReceiverCommandHandler : IRequestHandler<CreateReceiverComman
     /// <returns></returns>
     public async Task<(ReceiverDto Receiver, bool AlreadyExists)> Handle(CreateReceiverCommand request, CancellationToken cancel)
     {
-        var receiver = await _repo.ReadOnly()
+        var receiver = await _repo.Query
             .Where(r => r.EmailAddress == request.EmailAddress)
             .SingleOrDefaultAsync(cancel);
 

EnvelopeGenerator.Domain/Constants/AuthPolicy.cs

@@ -0,0 +1,15 @@
+namespace EnvelopeGenerator.Domain.Constants
+{
+    public static class AuthPolicy
+    {
+        public const string SenderOrReceiver = nameof(SenderOrReceiver) + nameof(AuthPolicy);
+
+        public const string ReceiverOrReceiverTFA = nameof(ReceiverOrReceiverTFA) + nameof(AuthPolicy);
+
+        public const string Sender = nameof(Sender) + nameof(AuthPolicy);
+
+        public const string Receiver = nameof(Receiver) + nameof(AuthPolicy);
+
+        public const string ReceiverTFA = nameof(ReceiverTFA) + nameof(AuthPolicy);
+    }
+}

EnvelopeGenerator.Domain/Constants/ReceiverRole.cs

@@ -1,8 +0,0 @@
-namespace EnvelopeGenerator.Domain.Constants
-{
-    public static class ReceiverRole
-    {
-        public const string PreAuth = "PreAuth";
-        public const string FullyAuth = "FullyAuth";
-    }
-}

EnvelopeGenerator.Domain/Constants/Role.cs

@@ -0,0 +1,23 @@
+#if NETFRAMEWORK
+using System;
+#endif
+
+namespace EnvelopeGenerator.Domain.Constants
+{
+    public static class Role
+    {
+        [Obsolete("Use Receiver.TFA")]
+        public const string ReceiverTFA = Receiver.TFA;
+
+        [Obsolete("Use Receiver.Full")]
+        public const string ReceiverFull = Receiver.Full;
+
+        public static class Receiver
+        {
+            public const string TFA = "EGReceiverTFA";
+            public const string Full = "EGReceiver";
+        }
+
+        public const string Sender = "EGSender";
+    }
+}

EnvelopeGenerator.Domain/Entities/Config.cs

@@ -2,30 +2,22 @@
 using System.ComponentModel.DataAnnotations.Schema;
 
 namespace EnvelopeGenerator.Domain.Entities
-#if NET
-    ;
-#elif NETFRAMEWORK
-    {
-#endif
-
-[Table("TBSIG_CONFIG", Schema = "dbo")]
-public class Config
 {
-    [Column("SENDING_PROFILE", TypeName = "int")]
-    [Required]
-    public int SendingProfile { get; set; }
+    [Table("TBSIG_CONFIG", Schema = "dbo")]
+    public class Config
+    {
+        [Column("SENDING_PROFILE", TypeName = "int")]
+        [Required]
+        public int SendingProfile { get; set; }
 
-    [Column("SIGNATURE_HOST", TypeName = "nvarchar(128)")]
-    [Required]
-    public string SignatureHost { get; set; }
+        [Column("SIGNATURE_HOST", TypeName = "nvarchar(128)")]
+        [Required]
+        public string SignatureHost { get; set; }
 
-    [Column("EXTERNAL_PROGRAM_NAME", TypeName = "nvarchar(30)")]
-    public string ExternalProgramName { get; set; }
+        [Column("EXTERNAL_PROGRAM_NAME", TypeName = "nvarchar(30)")]
+        public string ExternalProgramName { get; set; }
 
-    [Column("EXPORT_PATH", TypeName = "nvarchar(256)")]
-    public string ExportPath { get; set; }
-}
-
-#if NETFRAMEWORK
+        [Column("EXPORT_PATH", TypeName = "nvarchar(256)")]
+        public string ExportPath { get; set; }
     }
-#endif
+}

EnvelopeGenerator.Domain/Entities/Document.cs

@@ -1,6 +1,9 @@
-using EnvelopeGenerator.Domain.Interfaces;
+using System;
+using EnvelopeGenerator.Domain.Interfaces;
 using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
+
+using EnvelopeGenerator.Domain.Interfaces.Auditing;
 #if NETFRAMEWORK
 using System.Drawing;
 using System.Collections.Generic;
@@ -8,81 +11,77 @@ using System.Linq;
 #endif
 
 namespace EnvelopeGenerator.Domain.Entities
-#if NET
-    ;
-#elif NETFRAMEWORK
-    {
-#endif
-
-[Table("TBSIG_ENVELOPE_DOCUMENT", Schema = "dbo")]
-public class Document : IHasEnvelope
 {
-    public Document()
+    [Table("TBSIG_ENVELOPE_DOCUMENT", Schema = "dbo")]
+    public class Document : IHasEnvelope, IHasAddedWhen
     {
+        public Document()
+        {
 #if NETFRAMEWORK
-        Elements = Enumerable.Empty<Signature>().ToList();
+            Elements = Enumerable.Empty<Signature>().ToList();
+#endif
+        }
+
+        [Key]
+        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+        [Column("GUID")]
+        public int Id { get; set; }
+
+        [Required]
+        [Column("ENVELOPE_ID")]
+        public int EnvelopeId { get; set; }
+#if NETFRAMEWORK
+            = 0;
+#endif
+
+        [Required]
+        [Column("ADDED_WHEN", TypeName = "datetime")]
+        public DateTime AddedWhen { get; set; }
+
+        [Column("BYTE_DATA", TypeName = "varbinary(max)")]
+        public byte[]
+#if nullable
+            ?
+#endif
+            ByteData { get; set; }
+
+        #region File
+        [Column("FILENAME", TypeName = "nvarchar(256)")]
+        public string Filename { get; set; }
+
+        [Column("FILEPATH", TypeName = "nvarchar(256)")]
+        public string Filepath { get; set; }
+
+        [Column("FILENAME_ORIGINAL", TypeName = "nvarchar(256)")]
+        public string
+#if nullable
+            ?
+#endif
+            FileNameOriginal { get; set; }
+        #endregion
+
+        public virtual List<Signature>
+#if nullable
+            ?
+#endif
+            Elements { get; set; }
+
+        [ForeignKey("EnvelopeId")]
+        public virtual Envelope
+#if nullable
+            ?
+#endif
+            Envelope { get; set; }
+
+#if NETFRAMEWORK
+        [NotMapped]
+        public bool IsTempFile { get; set; }
+
+        [NotMapped]
+        public Bitmap Thumbnail { get; set; }
+
+        [NotMapped]
+        public int PageCount { get; set; }
 #endif
     }
-
-    [Key]
-    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
-    [Column("GUID")]
-    public int Id { get; set; }
-
-    [Required]
-    [Column("ENVELOPE_ID")]
-    public int EnvelopeId { get; set; }
-#if NETFRAMEWORK
-        = 0;
-#endif
-
-    [Column("BYTE_DATA", TypeName = "varbinary(max)")]
-    public byte[]
-#if NET
-        ?
-#endif
-        ByteData { get; set; }
-
-    #region File
-    [Column("FILENAME", TypeName = "nvarchar(256)")]
-    public string Filename { get; set; }
-
-    [Column("FILEPATH", TypeName = "nvarchar(256)")]
-    public string Filepath { get; set; }
-
-    [Column("FILENAME_ORIGINAL", TypeName = "nvarchar(256)")]
-    public string
-#if NET
-        ?
-#endif
-        FileNameOriginal { get; set; }
-    #endregion
-
-    public virtual List<Signature>
-#if NET
-        ?
-#endif
-        Elements { get; set; }
-
-    [ForeignKey("EnvelopeId")]
-    public virtual Envelope
-#if NET
-        ?
-#endif
-        Envelope { get; set; }
-
-#if NETFRAMEWORK
-    [NotMapped]
-    public bool IsTempFile { get; set; }
-
-    [NotMapped]
-    public Bitmap Thumbnail { get; set; }
-
-    [NotMapped]
-    public int PageCount { get; set; }
-#endif
-}
-
-#if NETFRAMEWORK
-    }
-#endif
+}

EnvelopeGenerator.Domain/Entities/DocumentStatus.cs

@@ -1,65 +1,62 @@
-using System.ComponentModel.DataAnnotations;
+using System;
+using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
 using DigitalData.Core.Abstractions.Interfaces;
 using EnvelopeGenerator.Domain.Interfaces;
-
-#if NETFRAMEWORK
-using System;
-#endif
+using EnvelopeGenerator.Domain.Interfaces.Auditing;
 
 namespace EnvelopeGenerator.Domain.Entities
-#if NET
-    ;
-#elif NETFRAMEWORK
-    {
-#endif
-
-[Table("TBSIG_DOCUMENT_STATUS", Schema = "dbo")]
-public class DocumentStatus : IHasEnvelope, IHasReceiver, IEntity
 {
-    public DocumentStatus()
+    [Table("TBSIG_DOCUMENT_STATUS", Schema = "dbo")]
+    public class DocumentStatus : IHasEnvelope, IHasReceiver, IEntity, IHasAddedWhen, IHasChangedWhen
     {
-        // TODO: * check Form Application and remove default value
+        public DocumentStatus()
+        {
+            // TODO: * check Form Application and remove default value
 #if NETFRAMEWORK
-        Status = Constants.DocumentStatus.Created;
+            Status = Constants.DocumentStatus.Created;
 #endif
-    }
+        }
 
-    [Key]
-    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
-    [Column("GUID")]
-    public int Id { get; set; }
+        [Key]
+        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+        [Column("GUID")]
+        public int Id { get; set; }
 
-    [Required]
-    [Column("ENVELOPE_ID")]
-    public int EnvelopeId { get; set; }
+        [Required]
+        [Column("ENVELOPE_ID")]
+        public int EnvelopeId { get; set; }
 
-    [Required]
-    [Column("RECEIVER_ID")]
-    public int ReceiverId { get; set; }
+        [Required]
+        [Column("RECEIVER_ID")]
+        public int ReceiverId { get; set; }
 
-    [Required]
-    [Column("STATUS")]
-    public Constants.DocumentStatus Status { get; set; }
+        [Required]
+        [Column("STATUS")]
+        public Constants.DocumentStatus Status { get; set; }
 
-    [Column("VALUE", TypeName = "nvarchar(max)")]
-    public string Value { get; set; }
+        [Required]
+        [Column("ADDED_WHEN", TypeName = "datetime")]
+        public DateTime AddedWhen { get; set; }
 
-    [ForeignKey("EnvelopeId")]
-    public virtual Envelope
-#if NET
-        ?
+        [Column("CHANGED_WHEN", TypeName = "datetime")]
+        public DateTime? ChangedWhen { get; set; }
+
+        [Column("VALUE", TypeName = "nvarchar(max)")]
+        public string Value { get; set; }
+
+        [ForeignKey("EnvelopeId")]
+        public virtual Envelope
+#if nullable
+            ?
 #endif
-        Envelope { get; set; }
+            Envelope { get; set; }
 
-    [ForeignKey("ReceiverId")]
-    public virtual Receiver
-#if NET
-        ?
+        [ForeignKey("ReceiverId")]
+        public virtual Receiver
+#if nullable
+            ?
 #endif
             Receiver { get; set; }
-}
-
-#if NETFRAMEWORK
     }
-#endif
+}

EnvelopeGenerator.Domain/Entities/ElementAnnotation.cs

@@ -1,92 +1,85 @@
-using System.ComponentModel.DataAnnotations;
+using System;
+using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
+using EnvelopeGenerator.Domain.Interfaces.Auditing;
 #if NETFRAMEWORK
-using System;
 #endif
 
 namespace EnvelopeGenerator.Domain.Entities
-#if NET
-    ;
-#elif NETFRAMEWORK
-    {
-#endif
-
-[Table("TBSIG_DOCUMENT_RECEIVER_ELEMENT_ANNOTATION")]
-public class ElementAnnotation
 {
-    [Key]
-    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
-    [Column("GUID", TypeName = "bigint")]
-    public long Id { get; set; }
+    [Table("TBSIG_DOCUMENT_RECEIVER_ELEMENT_ANNOTATION")]
+    public class ElementAnnotation : IHasAddedWhen, IUpdateAuditable
+    {
+        [Key]
+        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+        [Column("GUID", TypeName = "bigint")]
+        public long Id { get; set; }
 
-    [Required]
-    [Column("ELEMENT_ID", TypeName = "int")]
-    public int ElementId { get; set; }
+        [Required]
+        [Column("ELEMENT_ID", TypeName = "int")]
+        public int ElementId { get; set; }
 
-    [Required]
-    [Column("NAME", TypeName = "nvarchar(100)")]
-    [StringLength(100)]
-    public string Name { get; set; }
+        [Required]
+        [Column("NAME", TypeName = "nvarchar(100)")]
+        [StringLength(100)]
+        public string Name { get; set; }
 
-    [Required]
-    [Column("VALUE", TypeName = "nvarchar(max)")]
-    public string Value { get; set; }
+        [Required]
+        [Column("VALUE", TypeName = "nvarchar(max)")]
+        public string Value { get; set; }
 
-    [Required]
-    [Column("TYPE", TypeName = "nvarchar(50)")]
-    public string Type { get; set; }
+        [Required]
+        [Column("TYPE", TypeName = "nvarchar(50)")]
+        public string Type { get; set; }
 
-    [Column("POSITION_X", TypeName = "float")]
-    public double
-#if NET
-        ?
+        [Column("POSITION_X", TypeName = "float")]
+        public double
+#if nullable
+            ?
 #endif
-        X { get; set; }
+            X { get; set; }
 
-    [Column("POSITION_Y", TypeName = "float")]
-    public double
-#if NET
-        ?
+        [Column("POSITION_Y", TypeName = "float")]
+        public double
+#if nullable
+            ?
 #endif
-        Y { get; set; }
+            Y { get; set; }
 
-    [Column("WIDTH", TypeName = "float")]
-    public double
-#if NET
-        ?
+        [Column("WIDTH", TypeName = "float")]
+        public double
+#if nullable
+            ?
 #endif
-        Width { get; set; }
+            Width { get; set; }
 
-    [Column("HEIGHT", TypeName = "float")]
-    public double
-#if NET
-        ?
+        [Column("HEIGHT", TypeName = "float")]
+        public double
+#if nullable
+            ?
 #endif
-        Height { get; set; }
+            Height { get; set; }
 
-    [Required]
-    [Column("ADDED_WHEN", TypeName = "datetime")]
-    public DateTime AddedWhen { get; set; }
+        [Required]
+        [Column("ADDED_WHEN", TypeName = "datetime")]
+        public DateTime AddedWhen { get; set; }
 
-    [Column("CHANGED_WHEN", TypeName = "datetime")]
-    public DateTime? ChangedWhen { get; set; }
+        [Column("CHANGED_WHEN", TypeName = "datetime")]
+        public DateTime? ChangedWhen { get; set; }
 
-    [Column("CHANGED_WHO", TypeName = "nvarchar(100)")]
-    [StringLength(100)]
-    public string
-#if NET
-        ?
+        [Column("CHANGED_WHO", TypeName = "nvarchar(100)")]
+        [StringLength(100)]
+        public string
+#if nullable
+            ?
 #endif
-        ChangedWho { get; set; }
+            ChangedWho { get; set; }
 
-    [ForeignKey("ElementId")]
-    public virtual Signature
-#if NET
-        ?
+        [ForeignKey("ElementId")]
+        public virtual Signature
+#if nullable
+            ?
 #endif
-        Element { get; set; }
-}
-
-#if NETFRAMEWORK
+            Element { get; set; }
     }
-#endif
+}

EnvelopeGenerator.Domain/Entities/EmailTemplate.cs

@@ -1,44 +1,39 @@
-using DigitalData.Core.Abstractions.Interfaces;
+using System;
+using DigitalData.Core.Abstractions.Interfaces;
 using System.ComponentModel;
 using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
-#if NETFRAMEWORK
-using System;
-#endif
+using EnvelopeGenerator.Domain.Interfaces.Auditing;
 
 namespace EnvelopeGenerator.Domain.Entities
-#if NET
-    ;
-#elif NETFRAMEWORK
-    {
-#endif
-
-[Table("TBSIG_EMAIL_TEMPLATE", Schema = "dbo")]
-public class EmailTemplate : IEntity
 {
-    [Key]
-    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
-    [Column("GUID")]
-    public int Id { get; set; }
+    [Table("TBSIG_EMAIL_TEMPLATE", Schema = "dbo")]
+    public class EmailTemplate : IEntity, IHasAddedWhen, IHasChangedWhen
+    {
+        [Key]
+        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+        [Column("GUID")]
+        public int Id { get; set; }
 
-    [Column("NAME", TypeName = "nvarchar(64)")]
-    public string Name { get; set; }
+        [Column("NAME", TypeName = "nvarchar(64)")]
+        public string Name { get; set; }
 
-    [Column("BODY", TypeName = "nvarchar(max)")]
-    public string Body { get; set; }
+        [Column("BODY", TypeName = "nvarchar(max)")]
+        public string Body { get; set; }
 
-    [Column("SUBJECT", TypeName = "nvarchar(512)")]
-    public string Subject { get; set; }
+        [Column("SUBJECT", TypeName = "nvarchar(512)")]
+        public string Subject { get; set; }
 
-    [Required]
-    [Column("ADDED_WHEN", TypeName = "datetime")]
-    [DefaultValue("GETDATE()")]
-    public DateTime AddedWhen { get; set; }
+        [Required]
+        [Column("LANG_CODE", TypeName = "varchar(5)")]
+        public string LangCode { get; set; }
 
-    [Column("CHANGED_WHEN", TypeName = "datetime")]
-    public DateTime ChangedWhen { get; set; }
-}
+        [Required]
+        [Column("ADDED_WHEN", TypeName = "datetime")]
+        [DefaultValue("GETDATE()")]
+        public DateTime AddedWhen { get; set; }
 
-#if NETFRAMEWORK
+        [Column("CHANGED_WHEN", TypeName = "datetime")]
+        public DateTime? ChangedWhen { get; set; }
     }
-#endif
+}

EnvelopeGenerator.Domain/Entities/Envelope.cs

@@ -1,208 +1,205 @@
-using DigitalData.UserManager.Domain.Entities;
+using System;
+using DigitalData.UserManager.Domain.Entities;
 using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
 using EnvelopeGenerator.Domain.Constants;
 using Newtonsoft.Json;
-
+using EnvelopeGenerator.Domain.Interfaces.Auditing;
 #if NETFRAMEWORK
-using System;
 using System.Collections.Generic;
 using System.Linq;
 #endif
 
 namespace EnvelopeGenerator.Domain.Entities
-#if NET
-    ;
-#elif NETFRAMEWORK
-    {
-#endif
-
-[Table("TBSIG_ENVELOPE", Schema = "dbo")]
-public class Envelope
 {
-    public Envelope()
+    [Table("TBSIG_ENVELOPE", Schema = "dbo")]
+    public class Envelope : IHasAddedWhen, IHasChangedWhen
     {
-        // TODO: * Check the Form App and remove the default value
+        public Envelope()
+        {
+            // TODO: * Check the Form App and remove the default value
 #if NETFRAMEWORK
-        Id = 0;
-        Status = EnvelopeStatus.EnvelopeCreated;
-        Uuid = Guid.NewGuid().ToString();
-        Message = My.Resources.Envelope.Please_read_and_sign_this_document;
-        Title= string.Empty;
-        Comment = string.Empty;
-        Language = "de-DE";
-        SendReminderEmails = false;
-        FirstReminderDays = 0;
-        ReminderIntervalDays = 0;
-        CertificationType = (int)Constants.CertificationType.AdvancedElectronicSignature;
-        UseAccessCode = false;
-        Documents = Enumerable.Empty<Document>().ToList();
-        Histories = Enumerable.Empty<History>().ToList();
-        EnvelopeReceivers = Enumerable.Empty<EnvelopeReceiver>().ToList();
+            Id = 0;
+            Status = EnvelopeStatus.EnvelopeCreated;
+            Uuid = Guid.NewGuid().ToString();
+            Message = My.Resources.Envelope.Please_read_and_sign_this_document;
+            Title = string.Empty;
+            Comment = string.Empty;
+            Language = "de-DE";
+            SendReminderEmails = false;
+            FirstReminderDays = 0;
+            ReminderIntervalDays = 0;
+            CertificationType = (int)Constants.CertificationType.AdvancedElectronicSignature;
+            UseAccessCode = false;
+            Documents = Enumerable.Empty<Document>().ToList();
+            Histories = Enumerable.Empty<History>().ToList();
+            EnvelopeReceivers = Enumerable.Empty<EnvelopeReceiver>().ToList();
 #endif
+        }
+
+        [Key]
+        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+        [Column("GUID")]
+        public int Id { get; set; }
+
+        [Required]
+        [Column("USER_ID")]
+        public int UserId { get; set; }
+
+        [Required]
+        [Column("STATUS")]
+        public EnvelopeStatus Status { get; set; }
+
+        [Required]
+        [Column("ENVELOPE_UUID", TypeName = "nvarchar(36)")]
+        public string Uuid { get; set; }
+
+        [Column("MESSAGE", TypeName = "nvarchar(max)")]
+        public string Message { get; set; }
+
+        [Column("EXPIRES_WHEN", TypeName = "datetime")]
+        public DateTime? ExpiresWhen { get; set; }
+
+        [Column("EXPIRES_WARNING_WHEN", TypeName = "datetime")]
+        public DateTime? ExpiresWarningWhen { get; set; }
+
+        [Required]
+        [Column("ADDED_WHEN", TypeName = "datetime")]
+        public DateTime AddedWhen { get; set; }
+
+        [Column("CHANGED_WHEN", TypeName = "datetime")]
+        public DateTime? ChangedWhen { get; set; }
+
+        [Column("TITLE", TypeName = "nvarchar(128)")]
+        public string
+#if nullable
+        ?
+#endif
+            Title
+        { get; set; }
+
+        [Column("COMMENT", TypeName = "nvarchar(128)")]
+        public string Comment { get; set; }
+
+        [Column("CONTRACT_TYPE")]
+        public int? ContractType { get; set; }
+
+#if NETFRAMEWORK
+        [NotMapped]
+        public string ContractTypeTranslated => My.Resources.Model.ResourceManager.GetString(ContractType.ToString());
+#endif
+
+        [Column("LANGUAGE", TypeName = "nvarchar(5)")]
+        public string Language { get; set; }
+
+        [Column("SEND_REMINDER_EMAILS")]
+        public bool SendReminderEmails { get; set; }
+
+        [Column("FIRST_REMINDER_DAYS")]
+        public int? FirstReminderDays { get; set; }
+
+        [Column("REMINDER_INTERVAL_DAYS")]
+        public int? ReminderIntervalDays { get; set; }
+
+        [Column("ENVELOPE_TYPE")]
+        public int? EnvelopeTypeId { get; set; }
+
+        [JsonIgnore]
+        [NotMapped]
+        public bool ReadOnly => EnvelopeTypeId == 2;
+
+        [Column("CERTIFICATION_TYPE")]
+        public int? CertificationType { get; set; }
+
+        [Column("USE_ACCESS_CODE")]
+        public bool UseAccessCode { get; set; }
+
+        [Column("FINAL_EMAIL_TO_CREATOR")]
+        public int? FinalEmailToCreator { get; set; }
+
+        [Column("FINAL_EMAIL_TO_RECEIVERS")]
+        public int? FinalEmailToReceivers { get; set; }
+
+        [Column("EXPIRES_WHEN_DAYS")]
+        public int? ExpiresWhenDays { get; set; }
+
+        [Column("EXPIRES_WARNING_WHEN_DAYS")]
+        public int? ExpiresWarningWhenDays { get; set; }
+
+        [ForeignKey("UserId")]
+        public User User { get; set; }
+
+        [Column("TFA_ENABLED")]
+        public bool TfaEnabled { get; set; }
+#if NETFRAMEWORK
+            = false;
+#endif
+
+        [NotMapped]
+        [Column("DOC_RESULT")]
+        public byte[]
+#if nullable
+        ?
+#endif
+            DocResult
+        { get; set; }
+
+        [ForeignKey("EnvelopeTypeId")]
+        public virtual EnvelopeType
+#if nullable
+        ?
+#endif
+            Type
+        { get; set; }
+
+#if NETFRAMEWORK
+        [NotMapped]
+        public string CURRENT_WORK_APP { get; set; } = "signFLOW GUI";
+
+        [NotMapped]
+        public bool IsAlreadySent => Status > EnvelopeStatus.EnvelopeSaved;
+#endif
+
+        public List<Document>
+#if nullable
+        ?
+#endif
+            Documents
+        { get; set; }
+
+        public List<History>
+#if nullable
+        ?
+#endif
+            Histories
+        { get; set; }
+
+        public List<EnvelopeReceiver>
+#if nullable
+        ?
+#endif
+            EnvelopeReceivers
+        { get; set; }
+
+        //#if NETFRAMEWORK
+        /// <summary>
+        /// Validates whether the receiver and document data are complete.
+        /// </summary>
+        public List<string> ValidateReceiverDocumentData()
+        {
+            var errors = new List<string>();
+
+            if (!Documents?.Any() ?? true)
+                errors.Add(My.Resources.Envelope.Missing_Documents);
+
+            if (!EnvelopeReceivers?.Any() ?? true)
+                errors.Add(My.Resources.Envelope.Missing_Receivers);
+
+            if (EnvelopeReceivers?.Any(r => !r.HasEmailAndName) ?? false)
+                errors.Add(My.Resources.Envelope.Incomplete_Receivers);
+
+            return errors;
+        }
+        //#endif
     }
-
-    [Key]
-    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
-    [Column("GUID")]
-    public int Id { get; set; }
-
-    [Required]
-    [Column("USER_ID")]
-    public int UserId { get; set; }
-
-    [Required]
-    [Column("STATUS")]
-    public EnvelopeStatus Status { get; set; }
-
-    [Required]
-    [Column("ENVELOPE_UUID", TypeName = "nvarchar(36)")]
-    public string Uuid { get; set; }
-
-    [Column("MESSAGE", TypeName = "nvarchar(max)")]
-    public string Message { get; set; }
-
-    [Column("EXPIRES_WHEN", TypeName = "datetime")]
-    public DateTime? ExpiresWhen { get; set; }
-
-    [Column("EXPIRES_WARNING_WHEN", TypeName = "datetime")]
-    public DateTime? ExpiresWarningWhen { get; set; }
-
-    [Required]
-    [Column("ADDED_WHEN", TypeName = "datetime")]
-    public DateTime AddedWhen { get; set; }
-
-    [Column("CHANGED_WHEN", TypeName = "datetime")]
-    public DateTime? ChangedWhen { get; set; }
-
-    [Column("TITLE", TypeName = "nvarchar(128)")]
-    public string
-#if NET
-        ?
-#endif
-        Title { get; set; }
-
-    [Column("COMMENT", TypeName = "nvarchar(128)")]
-    public string Comment { get; set; }
-
-    [Column("CONTRACT_TYPE")]
-    public int? ContractType { get; set; }
-
-#if NETFRAMEWORK
-    [NotMapped]
-    public string ContractTypeTranslated => My.Resources.Model.ResourceManager.GetString(ContractType.ToString());
-#endif
-
-    [Column("LANGUAGE", TypeName = "nvarchar(5)")]
-    public string Language { get; set; }
-
-    [Column("SEND_REMINDER_EMAILS")]
-    public bool SendReminderEmails { get; set; }
-
-    [Column("FIRST_REMINDER_DAYS")]
-    public int? FirstReminderDays { get; set; }
-
-    [Column("REMINDER_INTERVAL_DAYS")]
-    public int? ReminderIntervalDays { get; set; }
-
-    [Column("ENVELOPE_TYPE")]
-    public int? EnvelopeTypeId { get; set; }
-
-    [JsonIgnore]
-    [NotMapped]
-    public bool ReadOnly => EnvelopeTypeId == 2;
-    
-    [Column("CERTIFICATION_TYPE")]
-    public int? CertificationType { get; set; }
-
-    [Column("USE_ACCESS_CODE")]
-    public bool UseAccessCode { get; set; }
-
-    [Column("FINAL_EMAIL_TO_CREATOR")]
-    public int? FinalEmailToCreator { get; set; }
-
-    [Column("FINAL_EMAIL_TO_RECEIVERS")]
-    public int? FinalEmailToReceivers { get; set; }
-
-    [Column("EXPIRES_WHEN_DAYS")]
-    public int? ExpiresWhenDays { get; set; }
-
-    [Column("EXPIRES_WARNING_WHEN_DAYS")]
-    public int? ExpiresWarningWhenDays { get; set; }
-
-    [ForeignKey("UserId")]
-    public User User { get; set; }
-
-    [Column("TFA_ENABLED")]
-    public bool TfaEnabled { get; set; }
-#if NETFRAMEWORK
-        = false;
-#endif
-
-    [NotMapped]
-    [Column("DOC_RESULT")]
-    public byte[]
-#if NET
-        ?
-#endif
-        DocResult
-    { get; set; }
-
-    [ForeignKey("EnvelopeTypeId")]
-    public virtual EnvelopeType
-#if NET
-        ?
-#endif
-        Type { get; set; }
-
-#if NETFRAMEWORK
-    [NotMapped]
-    public string CURRENT_WORK_APP { get; set; } = "signFLOW GUI";
-
-    [NotMapped]
-    public bool IsAlreadySent => Status > EnvelopeStatus.EnvelopeSaved;
-#endif
-
-    public List<Document>
-#if NET
-        ?
-#endif
-        Documents { get; set; }
-
-    public List<History>
-#if NET
-        ?
-#endif
-        Histories { get; set; }
-
-    public List<EnvelopeReceiver>
-#if NET
-        ?
-#endif
-        EnvelopeReceivers { get; set; }
-
-//#if NETFRAMEWORK
-    /// <summary>
-    /// Validates whether the receiver and document data are complete.
-    /// </summary>
-    public List<string> ValidateReceiverDocumentData()
-    {
-        var errors = new List<string>();
-
-        if (!Documents?.Any() ?? true)
-            errors.Add(My.Resources.Envelope.Missing_Documents);
-
-        if (!EnvelopeReceivers?.Any() ?? true)
-            errors.Add(My.Resources.Envelope.Missing_Receivers);
-
-        if (EnvelopeReceivers?.Any(r => !r.HasEmailAndName) ?? false)
-            errors.Add(My.Resources.Envelope.Incomplete_Receivers);
-
-        return errors;
-    }
-//#endif
-}
-
-#if NETFRAMEWORK
-    }
-#endif
+}

EnvelopeGenerator.Domain/Entities/EnvelopeReceiver.cs

@@ -1,104 +1,94 @@
-using System.ComponentModel.DataAnnotations;
+using System;
+using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
 using DigitalData.Core.Abstractions.Interfaces;
 using EnvelopeGenerator.Domain.Interfaces;
-
-#if NETFRAMEWORK
-using System;
-#endif
+using EnvelopeGenerator.Domain.Interfaces.Auditing;
 
 namespace EnvelopeGenerator.Domain.Entities
-#if NET
-    ;
-#elif NETFRAMEWORK
-    {
-#endif
-
-[Table("TBSIG_ENVELOPE_RECEIVER", Schema = "dbo")]
-public class EnvelopeReceiver : IHasEnvelope, IHasReceiver, IEntity
 {
-    public EnvelopeReceiver()
+    [Table("TBSIG_ENVELOPE_RECEIVER", Schema = "dbo")]
+    public class EnvelopeReceiver : IHasEnvelope, IHasReceiver, IEntity, IHasAddedWhen, IHasChangedWhen
     {
+        public EnvelopeReceiver()
+        {
 #if NETFRAMEWORK
-        CompanyName = string.Empty;
+            CompanyName = string.Empty;
 #endif
-    }
+        }
 
-    [Column("ENVELOPE_ID")]
-    public int EnvelopeId { get; set; }
+        [Column("ENVELOPE_ID")]
+        public int EnvelopeId { get; set; }
 
-    [Column("RECEIVER_ID")]
-    public int ReceiverId { get; set; }
+        [Column("RECEIVER_ID")]
+        public int ReceiverId { get; set; }
 
-    [Required]
-    [Column("SEQUENCE")]
-    public int Sequence { get; set; }
+        [Required]
+        [Column("SEQUENCE")]
+        public int Sequence { get; set; }
 
-    [Column("NAME", TypeName = "nvarchar(128)")]
-    public string Name { get; set; }
+        [Column("NAME", TypeName = "nvarchar(128)")]
+        public string Name { get; set; }
 
-    [Column("JOB_TITLE", TypeName = "nvarchar(128)")]
-    public string JobTitle { get; set; }
+        [Column("JOB_TITLE", TypeName = "nvarchar(128)")]
+        public string JobTitle { get; set; }
 
-    [Column("COMPANY_NAME", TypeName = "nvarchar(128)")]
-    public string
-#if NET
-        ?
+        [Column("COMPANY_NAME", TypeName = "nvarchar(128)")]
+        public string
+#if nullable
+            ?
 #endif
-        CompanyName { get; set; }
+            CompanyName { get; set; }
 
-    [Column("PRIVATE_MESSAGE", TypeName = "nvarchar(max)")]
-    public string PrivateMessage { get; set; }
+        [Column("PRIVATE_MESSAGE", TypeName = "nvarchar(max)")]
+        public string PrivateMessage { get; set; }
 
-    [Column("ACCESS_CODE", TypeName = "nvarchar(64)")]
-    public string AccessCode { get; set; }
+        [Column("ACCESS_CODE", TypeName = "nvarchar(64)")]
+        public string AccessCode { get; set; }
 
-    [Required]
-    [Column("ADDED_WHEN", TypeName = "datetime")]
-    public DateTime AddedWhen { get; set; }
+        [Required]
+        [Column("ADDED_WHEN", TypeName = "datetime")]
+        public DateTime AddedWhen { get; set; }
 
-    [Column("CHANGED_WHEN", TypeName = "datetime")]
-    public DateTime ChangedWhen { get; set; }
+        [Column("CHANGED_WHEN", TypeName = "datetime")]
+        public DateTime? ChangedWhen { get; set; }
 
-    [Column("PHONE_NUMBER")]
-    [StringLength(20)]
-    [RegularExpression(@"^\+[0-9]+$", ErrorMessage = "Phone number must start with '+' followed by digits.")]
-    public string PhoneNumber { get; set; }
+        [Column("PHONE_NUMBER")]
+        [StringLength(20)]
+        [RegularExpression(@"^\+[0-9]+$", ErrorMessage = "Phone number must start with '+' followed by digits.")]
+        public string PhoneNumber { get; set; }
 
-    [NotMapped]
-    public Tuple<int, int> Id => Tuple.Create(EnvelopeId, ReceiverId);
+        [NotMapped]
+        public Tuple<int, int> Id => Tuple.Create(EnvelopeId, ReceiverId);
 
-    [NotMapped]
-    public bool HasPhoneNumber => !string.IsNullOrWhiteSpace(PhoneNumber);
+        [NotMapped]
+        public bool HasPhoneNumber => !string.IsNullOrWhiteSpace(PhoneNumber);
 
-    [ForeignKey("EnvelopeId")]
-    public Envelope
-#if NET
-        ?
+        [ForeignKey("EnvelopeId")]
+        public Envelope
+#if nullable
+            ?
 #endif
-            Envelope { get; set; }
+                Envelope { get; set; }
 
-    [ForeignKey("ReceiverId")]
-    public Receiver
-#if NET
-        ?
+        [ForeignKey("ReceiverId")]
+        public Receiver
+#if nullable
+            ?
 #endif
-            Receiver { get; set; }
+                Receiver { get; set; }
 
-    #region Model of old serice
-    [NotMapped]
-    public Constants.ReceiverStatus Status { get; set; }
+        #region Model of old serice
+        [NotMapped]
+        public Constants.ReceiverStatus Status { get; set; }
 
-    [NotMapped]
-    public bool HasId => Id.Item1 > 0 && Id.Item2 > 0;
+        [NotMapped]
+        public bool HasId => Id.Item1 > 0 && Id.Item2 > 0;
 
-    [NotMapped]
-    public bool HasEmailAndName =>
-        !string.IsNullOrWhiteSpace(Receiver.EmailAddress) &&
-        !string.IsNullOrWhiteSpace(Name);
+        [NotMapped]
+        public bool HasEmailAndName =>
+            !string.IsNullOrWhiteSpace(Receiver.EmailAddress) &&
+            !string.IsNullOrWhiteSpace(Name);
         #endregion
     }
-
-#if NETFRAMEWORK
-    }
-#endif
+}

EnvelopeGenerator.Domain/Entities/EnvelopeReceiverReadOnly.cs

@@ -1,14 +1,13 @@
-using System.ComponentModel.DataAnnotations.Schema;
+using System;
+using System.ComponentModel.DataAnnotations.Schema;
 using System.ComponentModel.DataAnnotations;
 using DigitalData.EmailProfilerDispatcher.Abstraction.Attributes;
-#if NETFRAMEWORK
-using System;
-#endif
+using EnvelopeGenerator.Domain.Interfaces.Auditing;
 
 namespace EnvelopeGenerator.Domain.Entities
 {
     [Table("TBSIG_ENVELOPE_RECEIVER_READ_ONLY")]
-    public class EnvelopeReceiverReadOnly
+    public class EnvelopeReceiverReadOnly : IHasChangedWhen, ICreationAuditable
     {
         [Key]
         [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
@@ -42,16 +41,12 @@ namespace EnvelopeGenerator.Domain.Entities
 
         [Column("ADDED_WHEN")]
         [Required]
-        public DateTime
-#if NET
-            ?
-#endif
-            AddedWhen { get; set; }
+        public DateTime AddedWhen { get; set; }
 
         [Column("CHANGED_WHO")]
         [StringLength(100)]
         public string
-#if NET
+#if nullable
             ?
 #endif
             ChangedWho { get; set; }

EnvelopeGenerator.Domain/Entities/History.cs

@@ -1,84 +1,73 @@
-using DigitalData.UserManager.Domain.Entities;
+using System;
+using DigitalData.UserManager.Domain.Entities;
 using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
 using EnvelopeGenerator.Domain.Interfaces;
 using EnvelopeGenerator.Domain.Constants;
 using DigitalData.Core.Abstractions.Interfaces;
-
-
-#if NETFRAMEWORK
-using System;
-#endif
+using EnvelopeGenerator.Domain.Interfaces.Auditing;
 
 namespace EnvelopeGenerator.Domain.Entities
-#if NET
-    ;
-#elif NETFRAMEWORK
-    {
-#endif
-
-[Table("TBSIG_ENVELOPE_HISTORY", Schema = "dbo")]
-public class History : IHasEnvelope, IHasReceiver, IEntity
 {
-    [Key]
-    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
-    [Column("GUID")]
-    public long Id { get; set; }
+    [Table("TBSIG_ENVELOPE_HISTORY", Schema = "dbo")]
+    public class History : IHasEnvelope, IHasReceiver, IEntity, IHasAddedWhen, IHasChangedWhen
+    {
+        [Key]
+        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+        [Column("GUID")]
+        public long Id { get; set; }
 
-    [Required]
-    [Column("ENVELOPE_ID")]
-    public int EnvelopeId { get; set; }
+        [Required]
+        [Column("ENVELOPE_ID")]
+        public int EnvelopeId { get; set; }
 
-    [Required]
-    [Column("USER_REFERENCE", TypeName = "nvarchar(128)")]
-    public string UserReference { get; set; }
+        [Required]
+        [Column("USER_REFERENCE", TypeName = "nvarchar(128)")]
+        public string UserReference { get; set; }
 
-    [Required]
-    [Column("STATUS")]
-    public EnvelopeStatus  Status { get; set; }
+        [Required]
+        [Column("STATUS")]
+        public EnvelopeStatus  Status { get; set; }
 
-    [Required]
-    [Column("ADDED_WHEN", TypeName = "datetime")]
-    [DatabaseGenerated(DatabaseGeneratedOption.Computed)]
-    public DateTime AddedWhen { get; set; }
+        [Required]
+        [Column("ADDED_WHEN", TypeName = "datetime")]
+        [DatabaseGenerated(DatabaseGeneratedOption.Computed)]
+        public DateTime AddedWhen { get; set; }
 
-    [Column("ACTION_DATE", TypeName = "datetime")]
-    public DateTime? ActionDate { get; set; } = DateTime.Now;
-    
-    [Column("COMMENT", TypeName = "nvarchar(max)")]
-    public string
-#if NET
-        ?
+        [Column("ACTION_DATE", TypeName = "datetime")]
+        public DateTime? ChangedWhen { get; set; }
+        
+        [Column("COMMENT", TypeName = "nvarchar(max)")]
+        public string
+#if nullable
+            ?
 #endif
-        Comment { get; set; }
+            Comment { get; set; }
 
-    [ForeignKey("EnvelopeId")]
-    public virtual Envelope
-#if NET
-        ?
+        [ForeignKey("EnvelopeId")]
+        public virtual Envelope
+#if nullable
+            ?
 #endif
-        Envelope { get; set; }
+            Envelope { get; set; }
 
-    [ForeignKey("UserReference")]
-    public virtual User
-#if NET
-        ?
+        [ForeignKey("UserReference")]
+        public virtual User
+#if nullable
+            ?
 #endif
-        Sender { get; set; }
+            Sender { get; set; }
 
-    [ForeignKey("UserReference")]
-    public virtual Receiver
-#if NET
-        ?
+        [ForeignKey("UserReference")]
+        public virtual Receiver
+#if nullable
+            ?
 #endif
-        Receiver { get; set; }
+            Receiver { get; set; }
 
 #if NETFRAMEWORK
-    [NotMapped]
-    public string StatusTranslated => My.Resources.Model.ResourceManager.GetString(Status.ToString());
+        [NotMapped]
+        public string StatusTranslated => My.Resources.Model.ResourceManager.GetString(Status.ToString());
 #endif
-}
-
-#if NETFRAMEWORK
     }
-#endif
+}

EnvelopeGenerator.Domain/Entities/Receiver.cs

@@ -1,50 +1,42 @@
 using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
-using System.Drawing;
+using EnvelopeGenerator.Domain.Interfaces.Auditing;
 #if NETFRAMEWORK
 using System;
 using System.Collections.Generic;
 #endif
 
 namespace EnvelopeGenerator.Domain.Entities
-#if NET
-    ;
-#elif NETFRAMEWORK
-    {
-#endif
-
-[Table("TBSIG_RECEIVER", Schema = "dbo")]
-public class Receiver
 {
-    [Key]
-    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
-    [Column("GUID")]
-    public int Id { get; set; }
+    [Table("TBSIG_RECEIVER", Schema = "dbo")]
+    public class Receiver : IHasAddedWhen
+    {
+        [Key]
+        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+        [Column("GUID")]
+        public int Id { get; set; }
 
-    [Required, EmailAddress]
-    [Column("EMAIL_ADDRESS", TypeName = "nvarchar(250)")]
-    [StringLength(250)]
-    public string EmailAddress { get; set; }
+        [Required, EmailAddress]
+        [Column("EMAIL_ADDRESS", TypeName = "nvarchar(250)")]
+        [StringLength(250)]
+        public string EmailAddress { get; set; }
 
-    [Required]
-    [Column("SIGNATURE", TypeName = "nvarchar(64)")]
-    public string Signature { get; set; }
+        [Required]
+        [Column("SIGNATURE", TypeName = "nvarchar(64)")]
+        public string Signature { get; set; }
 
-    [Required]
-    [Column("ADDED_WHEN", TypeName = "datetime")]
-    public DateTime AddedWhen { get; set; }
+        [Required]
+        [Column("ADDED_WHEN", TypeName = "datetime")]
+        public DateTime AddedWhen { get; set; }
 
-    [Column("TOTP_SECRET_KEY", TypeName = "nvarchar(MAX)")]
-    public string TotpSecretkey { get; set; }
+        [Column("TOTP_SECRET_KEY", TypeName = "nvarchar(MAX)")]
+        public string TotpSecretkey { get; set; }
 
-    [Column("TFA_REG_DEADLINE", TypeName = "datetime")]
-    public DateTime? TfaRegDeadline { get; set; }
+        [Column("TFA_REG_DEADLINE", TypeName = "datetime")]
+        public DateTime? TfaRegDeadline { get; set; }
 
-    public List<EnvelopeReceiver> EnvelopeReceivers { get; set; }
+        public List<EnvelopeReceiver> EnvelopeReceivers { get; set; }
 
-    public string GetSignature() => EmailAddress.ToUpperInvariant().GetChecksum();
-}
-
-#if NETFRAMEWORK
+        public string GetSignature() => EmailAddress.ToUpperInvariant().GetChecksum();
     }
-#endif
+}

EnvelopeGenerator.Domain/Entities/Signature.cs

@@ -1,134 +1,130 @@
-using EnvelopeGenerator.Domain.Interfaces;
+using System;
+using EnvelopeGenerator.Domain.Interfaces;
 using System.ComponentModel;
 using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
+using EnvelopeGenerator.Domain.Interfaces.Auditing;
 #if NETFRAMEWORK
-using System;
 using System.Collections.Generic;
 #endif
 
 namespace EnvelopeGenerator.Domain.Entities
-#if NET
-    ;
-#elif NETFRAMEWORK
-    {
-#endif
-
-[Table("TBSIG_DOCUMENT_RECEIVER_ELEMENT", Schema = "dbo")]
-public class Signature : ISignature, IHasReceiver
 {
-    public Signature()
+    [Table("TBSIG_DOCUMENT_RECEIVER_ELEMENT", Schema = "dbo")]
+    public class Signature : ISignature, IHasReceiver, IHasAddedWhen, IUpdateAuditable
     {
-        // TODO: * Check the Form App and remove the default value
+        public Signature()
+        {
+            // TODO: * Check the Form App and remove the default value
 #if NETFRAMEWORK
-        Id = -1;
-        Required = false;
-        ReadOnly = false;
-        AnnotationIndex = 0;
+            Id = -1;
+            Required = false;
+            ReadOnly = false;
+            AnnotationIndex = 0;
+#endif
+        }
+
+        [Key]
+        [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
+        [Column("GUID")]
+        public int Id { get; set; }
+
+        [Required]
+        [Column("DOCUMENT_ID")]
+        public int DocumentId { get; set; }
+
+        [Required]
+        [Column("RECEIVER_ID")]
+        public int ReceiverId { get; set; }
+
+        [Required]
+        [Column("ELEMENT_TYPE")]
+        [DefaultValue(0)]
+        public int ElementType { get; set; }
+
+        [Required]
+        [Column("POSITION_X")]
+        [DefaultValue(0)]
+        public double X { get; set; }
+
+        [Required]
+        [Column("POSITION_Y")]
+        [DefaultValue(0)]
+        public double Y { get; set; }
+
+        [Required]
+        [Column("WIDTH")]
+        [DefaultValue(0)]
+        public double Width { get; set; }
+
+        [Required]
+        [Column("HEIGHT")]
+        [DefaultValue(0)]
+        public double Height { get; set; }
+
+        [Required]
+        [Column("PAGE")]
+        [DefaultValue(1)]
+        public int Page { get; set; }
+
+        [Required]
+        [Column("REQUIRED")]
+        [DefaultValue(false)]
+        public bool Required { get; set; }
+
+        [Column("TOOLTIP")]
+        public string Tooltip { get; set; }
+
+        [Required]
+        [Column("READ_ONLY")]
+        [DefaultValue(false)]
+        public bool ReadOnly { get; set; }
+
+        [Required]
+        [Column("ANNOTATION_INDEX")]
+        [DefaultValue(0)]
+        public int AnnotationIndex { get; set; }
+
+        [Required]
+        [Column("ADDED_WHEN", TypeName = "datetime")]
+        [DefaultValue("GETDATE()")]
+        public DateTime AddedWhen { get; set; }
+
+        [Column("CHANGED_WHEN", TypeName = "datetime")]
+        public DateTime? ChangedWhen { get; set; }
+
+        [Column("CHANGED_WHO", TypeName = "nvarchar(100)")]
+        public string
+#if nullable
+        ?
+#endif
+            ChangedWho
+        { get; set; }
+
+        [ForeignKey("DocumentId")]
+        public virtual Document Document { get; set; }
+
+        [ForeignKey("ReceiverId")]
+        public virtual Receiver
+#if nullable
+        ?
+#endif
+            Receiver
+        { get; set; }
+
+        public virtual IEnumerable<ElementAnnotation>
+#if nullable
+        ?
+#endif
+            Annotations
+        { get; set; }
+
+#if NETFRAMEWORK
+        [NotMapped]
+        public double Top => Math.Round(Y, 5);
+
+        [NotMapped]
+        public double Left => Math.Round(X, 5);
 #endif
     }
-
-    [Key]
-    [DatabaseGenerated(DatabaseGeneratedOption.Identity)]
-    [Column("GUID")]
-    public int Id { get; set; }
-
-    [Required]
-    [Column("DOCUMENT_ID")]
-    public int DocumentId { get; set; }
-
-    [Required]
-    [Column("RECEIVER_ID")]
-    public int ReceiverId { get; set; }
-
-    [Required]
-    [Column("ELEMENT_TYPE")]
-    [DefaultValue(0)]
-    public int ElementType { get; set; }
-
-    [Required]
-    [Column("POSITION_X")]
-    [DefaultValue(0)]
-    public double X { get; set; }
-
-    [Required]
-    [Column("POSITION_Y")]
-    [DefaultValue(0)]
-    public double Y { get; set; }
-
-    [Required]
-    [Column("WIDTH")]
-    [DefaultValue(0)]
-    public double Width { get; set; }
-
-    [Required]
-    [Column("HEIGHT")]
-    [DefaultValue(0)]
-    public double Height { get; set; }
-
-    [Required]
-    [Column("PAGE")]
-    [DefaultValue(1)]
-    public int Page { get; set; }
-
-    [Required]
-    [Column("REQUIRED")]
-    [DefaultValue(false)]
-    public bool Required { get; set; }
-
-    [Column("TOOLTIP")]
-    public string Tooltip { get; set; }
-
-    [Required]
-    [Column("READ_ONLY")]
-    [DefaultValue(false)]
-    public bool ReadOnly { get; set; }
-
-    [Required]
-    [Column("ANNOTATION_INDEX")]
-    [DefaultValue(0)]
-    public int AnnotationIndex { get; set; }
-
-    [Required]
-    [Column("ADDED_WHEN", TypeName = "datetime")]
-    [DefaultValue("GETDATE()")]
-    public DateTime? AddedWhen { get; set; }
-
-    [Column("CHANGED_WHEN", TypeName = "datetime")]
-    public DateTime? ChangedWhen { get; set; }
-
-    [Column("CHANGED_WHO", TypeName = "nvarchar(100)")]
-    public string
-#if NET
-        ?
-#endif
-        ChangedWho { get; set; }
-
-    [ForeignKey("DocumentId")]
-    public virtual Document Document { get; set; }
-
-    [ForeignKey("ReceiverId")]
-    public virtual Receiver
-#if NET
-        ?
-#endif
-        Receiver { get; set; }
-
-    public virtual IEnumerable<ElementAnnotation>
-#if NET
-        ?
-#endif
-        Annotations { get; set; }
-
-#if NETFRAMEWORK
-    [NotMapped]
-    public double Top => Math.Round(Y, 5);
-
-    [NotMapped]
-    public double Left => Math.Round(X, 5);
-#endif
-}
-
-#if NETFRAMEWORK
-    }
-#endif
+}

EnvelopeGenerator.Domain/Interfaces/Auditing/ICreationAuditable.cs

@@ -0,0 +1,6 @@
+namespace EnvelopeGenerator.Domain.Interfaces.Auditing
+{
+    public interface ICreationAuditable : IHasAddedWhen, IHasAddedWho
+    {
+    }
+}

EnvelopeGenerator.Domain/Interfaces/Auditing/IHasAddedWhen.cs

@@ -0,0 +1,11 @@
+#if NETFRAMEWORK
+using System;
+#endif
+
+namespace EnvelopeGenerator.Domain.Interfaces.Auditing
+{
+    public interface IHasAddedWhen
+    {
+        DateTime AddedWhen { get; set; }
+    }
+}

EnvelopeGenerator.Domain/Interfaces/Auditing/IHasAddedWho.cs

@@ -0,0 +1,7 @@
+namespace EnvelopeGenerator.Domain.Interfaces.Auditing
+{
+    public interface IHasAddedWho
+    {
+        string AddedWho { get; set; }
+    }
+}

EnvelopeGenerator.Domain/Interfaces/Auditing/IHasChangedWhen.cs

@@ -0,0 +1,11 @@
+#if NETFRAMEWORK
+using System;
+#endif
+
+namespace EnvelopeGenerator.Domain.Interfaces.Auditing
+{
+    public interface IHasChangedWhen
+    {
+        DateTime? ChangedWhen { get; set; }
+    }
+}

EnvelopeGenerator.Domain/Interfaces/Auditing/IHasChangedWho.cs

@@ -0,0 +1,11 @@
+namespace EnvelopeGenerator.Domain.Interfaces.Auditing
+{
+    public interface IHasChangedWho
+    {
+        string
+#if nullable
+            ?
+#endif
+            ChangedWho { get; set; }
+    }
+}

EnvelopeGenerator.Domain/Interfaces/Auditing/IUpdateAuditable.cs

@@ -0,0 +1,6 @@
+namespace EnvelopeGenerator.Domain.Interfaces.Auditing
+{
+    public interface IUpdateAuditable : IHasChangedWhen, IHasChangedWho
+    {
+    }
+}

EnvelopeGenerator.Domain/Interfaces/IHasEnvelope.cs

@@ -1,22 +1,11 @@
 namespace EnvelopeGenerator.Domain.Interfaces
-#if NET
-    ;
-#elif NETFRAMEWORK
-    {
-#endif
-
-public interface IHasEnvelope
 {
-#if NET
-    public 
-#endif
+    public interface IHasEnvelope
+    {
         Entities.Envelope
-#if NET
-        ?
+#if nullable
+            ?
 #endif
             Envelope { get; set; }
-}
-
-#if NETFRAMEWORK
-}
-#endif
+    }
+}

EnvelopeGenerator.Domain/Interfaces/IHasReceiver.cs

@@ -1,22 +1,11 @@
 namespace EnvelopeGenerator.Domain.Interfaces
-#if NET
-    ;
-#elif NETFRAMEWORK
+{
+    public interface IHasReceiver
     {
-#endif
-
-public interface IHasReceiver
-    {
-#if NET
-    public 
-#endif
         Entities.Receiver
-#if NET
-        ?
+#if nullable
+            ?
 #endif
             Receiver { get; set; }
-}
-
-#if NETFRAMEWORK
-}
-#endif
+    }
+}

EnvelopeGenerator.GeneratorAPI/.config/dotnet-tools.json

@@ -1,13 +0,0 @@
-{
-  "version": 1,
-  "isRoot": true,
-  "tools": {
-    "dotnet-ef": {
-      "version": "9.0.3",
-      "commands": [
-        "dotnet-ef"
-      ],
-      "rollForward": false
-    }
-  }
-}

EnvelopeGenerator.GeneratorAPI/Controllers/AuthController.cs

@@ -1,144 +0,0 @@
-using DigitalData.Core.Abstraction.Application;
-using DigitalData.UserManager.Application.Contracts;
-using Microsoft.AspNetCore.Authentication.Cookies;
-using Microsoft.AspNetCore.Authentication;
-using Microsoft.AspNetCore.Mvc;
-using Microsoft.AspNetCore.Authorization;
-using EnvelopeGenerator.GeneratorAPI.Models;
-
-namespace EnvelopeGenerator.GeneratorAPI.Controllers;
-
-/// <summary>
-/// Controller verantwortlich für die Benutzer-Authentifizierung, einschließlich Anmelden, Abmelden und Überprüfung des Authentifizierungsstatus.
-/// </summary>
-[Route("api/[controller]")]
-[ApiController]
-public partial class AuthController : ControllerBase
-{
-    private readonly ILogger<AuthController> _logger;
-    [Obsolete("Use MediatR")]
-    private readonly IUserService _userService;
-    private readonly IDirectorySearchService _dirSearchService;
-
-    /// <summary>
-    /// Initializes a new instance of the <see cref="AuthController"/> class.
-    /// </summary>
-    /// <param name="logger">The logger instance.</param>
-    /// <param name="userService">The user service instance.</param>
-    /// <param name="dirSearchService">The directory search service instance.</param>
-    [Obsolete("Use MediatR")]
-    public AuthController(ILogger<AuthController> logger, IUserService userService, IDirectorySearchService dirSearchService)
-    {
-        _logger = logger;
-        _userService = userService;
-        _dirSearchService = dirSearchService;
-    }
-
-    /// <summary>
-    /// Authentifiziert einen Benutzer und generiert ein JWT-Token. Wenn 'cookie' wahr ist, wird das Token als HTTP-Only-Cookie zurückgegeben.
-    /// </summary>
-    /// <param name="login">Benutzeranmeldedaten (Benutzername und Passwort).</param>
-    /// <param name="cookie">Wenn wahr, wird das JWT-Token auch als HTTP-Only-Cookie gesendet.</param>
-    /// <returns>
-    /// Gibt eine HTTP 200 oder 401.
-    /// </returns>
-    /// <remarks>
-    /// Sample request:
-    ///
-    ///     POST /api/auth?cookie=true
-    ///     {
-    ///        "username": "MaxMustermann",
-    ///        "password": "Geheim123!"
-    ///     }
-    ///     
-    ///     POST /api/auth?cookie=true
-    ///     {
-    ///        "id": "1",
-    ///        "password": "Geheim123!"
-    ///     }
-    ///
-    /// </remarks>
-    /// <response code="200">Erfolgreiche Anmeldung. Gibt das JWT-Token im Antwortkörper oder als Cookie zurück, wenn 'cookie' wahr ist.</response>
-    /// <response code="401">Unbefugt. Ungültiger Benutzername oder Passwort.</response>
-    [ProducesResponseType(typeof(string), StatusCodes.Status200OK, "text/javascript")]
-    [ProducesResponseType(typeof(void), StatusCodes.Status401Unauthorized)]
-    [AllowAnonymous]
-    [HttpPost]
-    public Task<IActionResult> Login([FromBody] Login login, [FromQuery] bool cookie = false)
-    {
-        // added to configure open API (swagger and scalar)
-        throw new NotImplementedException();
-    }
-
-    /// <summary>
-    /// Authentifiziert einen Benutzer und generiert ein JWT-Token. Das Token wird als HTTP-only-Cookie zurückgegeben.
-    /// </summary>
-    /// <param name="login">Benutzeranmeldedaten (Benutzername und Passwort).</param>
-    /// <returns>
-    /// Gibt eine HTTP 200 oder 401.
-    /// </returns>
-    /// <remarks>
-    /// Sample request:
-    ///
-    ///     POST /api/auth/form
-    ///     {
-    ///        "username": "MaxMustermann",
-    ///        "password": "Geheim123!"
-    ///     }
-    ///
-    /// </remarks>
-    /// <response code="200">Erfolgreiche Anmeldung. Gibt das JWT-Token im Antwortkörper oder als Cookie zurück, wenn 'cookie' wahr ist.</response>
-    /// <response code="401">Unbefugt. Ungültiger Benutzername oder Passwort.</response>
-    [ProducesResponseType(typeof(string), StatusCodes.Status200OK, "text/javascript")]
-    [ProducesResponseType(typeof(void), StatusCodes.Status401Unauthorized)]
-    [AllowAnonymous]
-    [HttpPost]
-    [Route("form")]
-    public Task<IActionResult> Login([FromForm] Login login)
-    {
-        // added to configure open API (swagger and scalar)
-        throw new NotImplementedException();
-    }
-
-    /// <summary>
-    /// Entfernt das Authentifizierungs-Cookie des Benutzers (AuthCookie)
-    /// </summary>
-    /// <returns>
-    /// Gibt eine HTTP 200 oder 401.
-    /// </returns>
-    /// <remarks>
-    /// Sample request:
-    ///
-    ///     POST /api/auth/logout
-    ///
-    /// </remarks>
-    /// <response code="200">Erfolgreich gelöscht, wenn der Benutzer ein berechtigtes Cookie hat.</response>
-    /// <response code="401">Wenn es kein zugelassenes Cookie gibt, wird „nicht zugelassen“ zurückgegeben.</response>
-    [ProducesResponseType(typeof(string), StatusCodes.Status200OK, "text/javascript")]
-    [ProducesResponseType(typeof(void), StatusCodes.Status401Unauthorized)]
-    [Authorize]
-    [HttpPost("logout")]
-    public async Task<IActionResult> Logout()
-    {
-        await HttpContext.SignOutAsync(CookieAuthenticationDefaults.AuthenticationScheme);
-        return Ok();
-    }
-
-    /// <summary>
-    /// Prüft, ob der Benutzer ein autorisiertes Token hat.
-    /// </summary>
-    /// <returns>Wenn ein autorisiertes Token vorhanden ist HTTP 200 asynchron 401</returns>
-    /// <remarks>
-    /// Sample request:
-    ///
-    ///     GET /api/auth
-    ///
-    /// </remarks>
-    /// <response code="200">Wenn es einen autorisierten Cookie gibt.</response>
-    /// <response code="401">Wenn kein Cookie vorhanden ist oder nicht autorisierte.</response>
-    [ProducesResponseType(typeof(string), StatusCodes.Status200OK, "text/javascript")]
-    [ProducesResponseType(typeof(void), StatusCodes.Status401Unauthorized)]
-    [Authorize]
-    [HttpGet]
-    public IActionResult IsAuthenticated() => Ok();
-}

EnvelopeGenerator.GeneratorAPI/Controllers/ControllerExtensions.cs

@@ -1,62 +0,0 @@
-using Microsoft.AspNetCore.Mvc;
-using System.Security.Claims;
-
-namespace EnvelopeGenerator.GeneratorAPI.Controllers
-{
-    /// <summary>
-    /// Provides extension methods for extracting user information from a <see cref="ClaimsPrincipal"/>.
-    /// </summary>
-    public static class ControllerExtensions
-    {
-        /// <summary>
-        /// Attempts to retrieve the user's ID from the claims. Returns null if the ID is not found or invalid.
-        /// </summary>
-        /// <param name="user">The <see cref="ClaimsPrincipal"/> representing the user.</param>
-        /// <returns>The user's ID as an integer, or null if not found or invalid.</returns>
-        public static int? GetIdOrDefault(this ClaimsPrincipal user)
-            => int.TryParse(user.FindFirstValue(ClaimTypes.NameIdentifier) ?? user.FindFirstValue("sub"), out int result)
-                ? result : null;
-
-        /// <summary>
-        /// Retrieves the user's ID from the claims. Throws an exception if the ID is missing or invalid.
-        /// </summary>
-        /// <param name="user">The <see cref="ClaimsPrincipal"/> representing the user.</param>
-        /// <returns>The user's ID as an integer.</returns>
-        /// <exception cref="InvalidOperationException">Thrown if the user ID claim is missing or invalid.</exception>
-        public static int GetId(this ClaimsPrincipal user)
-            => user.GetIdOrDefault()
-            ?? throw new InvalidOperationException("User ID claim is missing or invalid. This may indicate a misconfigured or forged JWT token.");
-
-        /// <summary>
-        /// Retrieves the username from the claims, if available.
-        /// </summary>
-        /// <param name="user">The <see cref="ClaimsPrincipal"/> representing the user.</param>
-        /// <returns>The username as a string, or null if not found.</returns>
-        public static string? GetUsernameOrDefault(this ClaimsPrincipal user)
-            => user.FindFirst(ClaimTypes.Name)?.Value;
-
-        /// <summary>
-        /// Retrieves the user's surname (last name) from the claims, if available.
-        /// </summary>
-        /// <param name="user">The <see cref="ClaimsPrincipal"/> representing the user.</param>
-        /// <returns>The surname as a string, or null if not found.</returns>
-        public static string? GetNameOrDefault(this ClaimsPrincipal user)
-            => user.FindFirst(ClaimTypes.Surname)?.Value;
-
-        /// <summary>
-        /// Retrieves the user's given name (first name) from the claims, if available.
-        /// </summary>
-        /// <param name="user">The <see cref="ClaimsPrincipal"/> representing the user.</param>
-        /// <returns>The given name as a string, or null if not found.</returns>
-        public static string? GetPrenameOrDefault(this ClaimsPrincipal user)
-            => user.FindFirst(ClaimTypes.GivenName)?.Value;
-
-        /// <summary>
-        /// Retrieves the user's email address from the claims, if available.
-        /// </summary>
-        /// <param name="user">The <see cref="ClaimsPrincipal"/> representing the user.</param>
-        /// <returns>The email address as a string, or null if not found.</returns>
-        public static string? GetEmailOrDefault(this ClaimsPrincipal user)
-            => user.FindFirst(ClaimTypes.Email)?.Value;
-    }
-}

EnvelopeGenerator.GeneratorAPI/Controllers/DocumentController.cs

@@ -1,43 +0,0 @@
-using DigitalData.Core.Exceptions;
-using EnvelopeGenerator.Application.Common.Extensions;
-using EnvelopeGenerator.Application.EnvelopeReceivers.Queries;
-using EnvelopeGenerator.Domain.Constants;
-using MediatR;
-using Microsoft.AspNetCore.Authorization;
-using Microsoft.AspNetCore.Mvc;
-
-namespace EnvelopeGenerator.GeneratorAPI.Controllers;
-
-/// <summary>
-/// Provides access to envelope documents for authenticated receivers.
-/// </summary>
-/// <remarks>
-/// Initializes a new instance of the <see cref="DocumentController"/> class.
-/// </remarks>
-[Authorize(Roles = ReceiverRole.FullyAuth)]
-[ApiController]
-[Route("api/[controller]")]
-public class DocumentController(IMediator mediator, ILogger<DocumentController> logger) : ControllerBase
-{
-    /// <summary>
-    /// Returns the document bytes for the specified envelope receiver key.
-    /// </summary>
-    /// <param name="query">Encoded envelope key.</param>
-    /// <param name="cancel">Cancellation token.</param>
-    [HttpGet]
-    public async Task<IActionResult> GetDocument(ReadEnvelopeReceiverQuery query, CancellationToken cancel)
-    {
-        var envRcv = await mediator.Send(query, cancel).FirstAsync(Exceptions.NotFound);
-
-        var byteData = envRcv.Envelope?.Documents?.FirstOrDefault()?.ByteData;
-
-        if (byteData is null || byteData.Length == 0)
-        {
-            logger.LogError("Document byte data is null or empty for envelope-receiver entity:\n{envelopeKey}.",
-                envRcv.ToJson(Format.Json.ForDiagnostics));
-            throw new NotFoundException("Document is empty.");
-        }
-
-        return File(byteData, "application/octet-stream");
-    }
-}

EnvelopeGenerator.GeneratorAPI/Controllers/EmailTemplateController.cs

@@ -1,116 +0,0 @@
-using AutoMapper;
-using EnvelopeGenerator.Application.EmailTemplates;
-using EnvelopeGenerator.Application.EmailTemplates.Commands.Update;
-using EnvelopeGenerator.Application.EmailTemplates.Commands.Reset;
-using EnvelopeGenerator.Application.EmailTemplates.Queries.Read;
-using Microsoft.AspNetCore.Authorization;
-using Microsoft.AspNetCore.Mvc;
-using MediatR;
-using System.Threading.Tasks;
-using EnvelopeGenerator.Application.Common.Dto;
-using DigitalData.Core.Abstraction.Application.Repository;
-using EnvelopeGenerator.Domain.Entities;
-using Microsoft.EntityFrameworkCore;
-
-namespace EnvelopeGenerator.GeneratorAPI.Controllers;
-
-/// <summary>
-/// Controller for managing temp templates.
-/// Steuerung zur Verwaltung von E-Mail-Vorlagen.
-/// </summary>
-[Route("api/[controller]")]
-[ApiController]
-[Authorize]
-public class EmailTemplateController : ControllerBase
-{
-    private readonly IMapper _mapper;
-
-    private readonly IRepository<EmailTemplate> _repository;
-
-    private readonly IMediator _mediator;
-
-    /// <summary>
-    /// Initialisiert eine neue Instanz der <see cref="EmailTemplateController"/>-Klasse.
-    /// </summary>
-    /// <param name="mapper">
-    /// <param name="repository">
-    /// Die AutoMapper-Instanz, die zum Zuordnen von Objekten verwendet wird.
-    /// </param>
-    [Obsolete("Use MediatR")]
-    public EmailTemplateController(IMapper mapper, IRepository<EmailTemplate> repository, IMediator mediator)
-    {
-        _mapper = mapper;
-        _repository = repository;
-        _mediator = mediator;
-    }
-
-    /// <summary>
-    /// Ruft E-Mail-Vorlagen basierend auf der angegebenen Abfrage ab.
-    /// Gibt alles zurück, wenn keine Id- oder Typ-Informationen eingegeben wurden.
-    /// </summary>
-    /// <param name="emailTemplate">Die Abfrageparameter zum Abrufen von E-Mail-Vorlagen.</param>
-    /// <returns>Gibt HTTP-Antwort zurück</returns>
-    /// <remarks>
-    /// Sample request:
-    /// GET /api/EmailTemplate?emailTemplateId=123
-    /// </remarks>
-    /// <response code="200">Wenn die E-Mail-Vorlagen erfolgreich abgerufen werden.</response>
-    /// <response code="400">Wenn die Abfrageparameter ungültig sind.</response>
-    /// <response code="401">Wenn der Benutzer nicht authentifiziert ist.</response>
-    /// <response code="404">Wenn die gesuchte Abfrage nicht gefunden wird.</response>
-    [HttpGet]
-    public async Task<IActionResult> Get([FromQuery] ReadEmailTemplateQuery? emailTemplate = null)
-    {
-        if (emailTemplate is null || (emailTemplate.Id is null && emailTemplate.Type is null))
-        {
-            var temps = await _repository.Query.ToListAsync();
-            return Ok(_mapper.Map<IEnumerable<EmailTemplateDto>>(temps));
-        }
-        else
-        {
-            var temp = await _mediator.Send(emailTemplate);
-            return temp is null ? NotFound() : Ok(temp);
-        }
-    }
-
-    /// <summary>
-    /// Updates an temp template or resets it if no update command is provided.
-    /// Aktualisiert eine E-Mail-Vorlage oder setzt sie zurück, wenn kein Aktualisierungsbefehl angegeben ist.
-    /// </summary>
-    /// <param name="temp">Die E-Mail-Vorlagenabfrage.</param>
-    /// <param name="update">Der Aktualisierungsbefehl für die E-Mail-Vorlage.
-    /// Wird auf Standardwert aktualisiert, wenn die Anfrage ohne http-Body gesendet wird.
-    /// </param>
-    /// <returns>Gibt HTTP-Antwort zurück</returns>
-    /// <remarks>
-    /// Sample request:
-    /// PUT /api/EmailTemplate
-    /// {
-    ///     "emailTemplateId": 123,
-    ///     "newContent": "Updated content"
-    /// }
-    /// </remarks>
-    /// <response code="200">Wenn die E-Mail-Vorlage erfolgreich aktualisiert oder zurückgesetzt wird.</response>
-    /// <response code="400">Wenn die Abfrage ohne einen String gesendet wird.</response>
-    /// <response code="401">Wenn der Benutzer nicht authentifiziert ist.</response>
-    /// <response code="404">Wenn die gesuchte Abfrage nicht gefunden wird.</response>
-    [HttpPut]
-    public async Task<IActionResult> Update([FromQuery] EmailTemplateQuery? temp = null, [FromBody] UpdateEmailTemplateCommand? update = null)
-    {
-        if (update is null)
-        {
-            await _mediator.Send(new ResetEmailTemplateCommand(temp));
-            return Ok();
-        }
-        else if (temp is null)
-        {
-            return BadRequest("No both id and type");
-        }
-        else
-        {
-            update.EmailTemplateQuery = temp;
-            await _mediator.Send(update);
-            return Ok();
-        }
-    }
-}

EnvelopeGenerator.GeneratorAPI/EnvelopeClaimTypes.cs

@@ -1,18 +0,0 @@
-namespace EnvelopeGenerator.GeneratorAPI
-{
-    /// <summary>
-    /// Provides custom claim types for envelope-related information.
-    /// </summary>
-    public static class EnvelopeClaimTypes
-    {
-        /// <summary>
-        /// Claim type for the title of an envelope.
-        /// </summary>
-        public static readonly string Title = $"Envelope{nameof(Title)}";
-
-        /// <summary>
-        /// Claim type for the ID of an envelope.
-        /// </summary>
-        public static readonly string Id = $"Envelope{nameof(Id)}";
-    }
-}

EnvelopeGenerator.GeneratorAPI/Properties/PublishProfiles/IISProfileNet7Win64.pubxml

@@ -1,22 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-https://go.microsoft.com/fwlink/?LinkID=208121.
--->
-<Project>
-  <PropertyGroup>
-    <WebPublishMethod>Package</WebPublishMethod>
-    <LastUsedBuildConfiguration>Release</LastUsedBuildConfiguration>
-    <LastUsedPlatform>Any CPU</LastUsedPlatform>
-    <SiteUrlToLaunchAfterPublish />
-    <LaunchSiteAfterPublish>true</LaunchSiteAfterPublish>
-    <ExcludeApp_Data>false</ExcludeApp_Data>
-    <ProjectGuid>4fdae4ba-f512-444a-9e18-111047d3ef02</ProjectGuid>
-    <DesktopBuildPackageLocation>P:\Install .Net\0 DD - Smart UP\signFLOW\Gen\Api\net7\win64\$(Version)\$(Version).zip</DesktopBuildPackageLocation>
-    <PackageAsSingleFile>true</PackageAsSingleFile>
-    <DeployIisAppPath>SignFlowGen</DeployIisAppPath>
-    <_TargetId>IISWebDeployPackage</_TargetId>
-    <TargetFramework>net7.0</TargetFramework>
-    <RuntimeIdentifier>win-x64</RuntimeIdentifier>
-    <SelfContained>true</SelfContained>
-  </PropertyGroup>
-</Project>

EnvelopeGenerator.GeneratorAPI/Properties/PublishProfiles/IISProfileNet9Win64.pubxml

@@ -1,22 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-https://go.microsoft.com/fwlink/?LinkID=208121.
--->
-<Project>
-  <PropertyGroup>
-    <WebPublishMethod>Package</WebPublishMethod>
-    <LastUsedBuildConfiguration>Release</LastUsedBuildConfiguration>
-    <LastUsedPlatform>Any CPU</LastUsedPlatform>
-    <SiteUrlToLaunchAfterPublish />
-    <LaunchSiteAfterPublish>true</LaunchSiteAfterPublish>
-    <ExcludeApp_Data>false</ExcludeApp_Data>
-    <ProjectGuid>4fdae4ba-f512-444a-9e18-111047d3ef02</ProjectGuid>
-    <DesktopBuildPackageLocation>P:\Install .Net\0 DD - Smart UP\signFLOW\Gen\Api\net9\win64\$(Version)\$(Version).zip</DesktopBuildPackageLocation>
-    <PackageAsSingleFile>true</PackageAsSingleFile>
-    <DeployIisAppPath>SignFlowGen</DeployIisAppPath>
-    <_TargetId>IISWebDeployPackage</_TargetId>
-    <TargetFramework>net9.0</TargetFramework>
-    <RuntimeIdentifier>win-x64</RuntimeIdentifier>
-    <SelfContained>true</SelfContained>
-  </PropertyGroup>
-</Project>