feat: Lesevorgang für Benutzerprofil mittels MediatR und Repository implementiert

- ReadProfile-Request eingeführt, um Benutzerprofil anhand der UserId abzurufen
- ReadProfileHandler hinzugefügt, der das Profil aus dem IProfileRepository liest
- Asynchrone Verarbeitung mit Unterstützung für CancellationToken integriert

src/WorkFlow.Application/Contracts/Repositories/IProfileRepository.cs

@@ -11,11 +11,12 @@ public interface IProfileRepository
     /// Retrieves the <see cref="Profile"/> associated with a given user ID by calling a database function.
     /// </summary>
     /// <param name="userId">The unique identifier of the user whose profile is to be retrieved.</param>
+    /// <param name="cancel">Propagates notification that operations should be canceled.</param>
     /// <returns>
     /// A task that represents the asynchronous operation. The task result contains the <see cref="Profile"/> object if found; otherwise, <c>null</c>.
     /// </returns>
     /// <remarks>
     /// Logs an error if no profile is found, or if multiple profiles are returned, indicating potential data issues.
     /// </remarks>
-    Task<Profile?> ReadAsync(int userId);
+    Task<Profile?> ReadAsync(int userId, CancellationToken cancel = default);
 }

src/WorkFlow.Application/Profile/ReadProfile.cs

@@ -1,22 +0,0 @@
-using MediatR;
-using WorkFlow.Application.Contracts.Repositories;
-
-namespace WorkFlow.Application.Profile;
-
-public record ReadProfile(int UserId) : IRequest<Domain.Entities.Profile?>;
-
-public class ReadProfileHandler : IRequestHandler<ReadProfile, Domain.Entities.Profile?>
-{
-    private readonly IProfileRepository _repository;
-
-    public ReadProfileHandler(IProfileRepository repository)
-    {
-        _repository = repository;
-    }
-
-    public async Task<Domain.Entities.Profile?> Handle(ReadProfile request, CancellationToken cancellationToken)
-    {
-        var profile = await _repository.ReadAsync(request.UserId);
-        return profile;
-    }
-}

src/WorkFlow.Application/Profiles/ReadProfile.cs

@@ -0,0 +1,41 @@
+using MediatR;
+using WorkFlow.Application.Contracts.Repositories;
+
+namespace WorkFlow.Application.Profiles;
+
+/// <summary>
+/// Represents a request to read a user profile by their user ID.
+/// </summary>
+/// <param name="UserId">The ID of the user whose profile is being requested.</param>
+public record ReadProfile(int UserId) : IRequest<Domain.Entities.Profile?>;
+
+/// <summary>
+/// Handles the <see cref="ReadProfile"/> request by retrieving the user profile
+/// from the data store using the <see cref="IProfileRepository"/>.
+/// </summary>
+public class ReadProfileHandler : IRequestHandler<ReadProfile, Domain.Entities.Profile?>
+{
+    private readonly IProfileRepository _repository;
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="ReadProfileHandler"/> class.
+    /// </summary>
+    /// <param name="repository">The profile repository used to access profile data.</param>
+    public ReadProfileHandler(IProfileRepository repository)
+    {
+        _repository = repository;
+    }
+
+    /// <summary>
+    /// Handles the <see cref="ReadProfile"/> request by retrieving the profile
+    /// corresponding to the specified user ID.
+    /// </summary>
+    /// <param name="request">The request containing the user ID.</param>
+    /// <param name="cancel">A cancellation token for the operation.</param>
+    /// <returns>The user profile if found; otherwise, <c>null</c>.</returns>
+    public async Task<Domain.Entities.Profile?> Handle(ReadProfile request, CancellationToken cancel = default)
+    {
+        var profile = await _repository.ReadAsync(request.UserId, cancel);
+        return profile;
+    }
+}

src/WorkFlow.Infrastructure/Repositories/ProfileRepository.cs

@@ -28,17 +28,18 @@ public class ProfileRepository : IProfileRepository
     /// Retrieves the <see cref="Profile"/> associated with a given user ID by calling a database function.
     /// </summary>
     /// <param name="userId">The unique identifier of the user whose profile is to be retrieved.</param>
+    /// <param name="cancel">Propagates notification that operations should be canceled.</param>
     /// <returns>
     /// A task that represents the asynchronous operation. The task result contains the <see cref="Profile"/> object if found; otherwise, <c>null</c>.
     /// </returns>
     /// <remarks>
     /// Logs an error if no profile is found, or if multiple profiles are returned, indicating potential data issues.
     /// </remarks>
-    public async Task<Profile?> ReadAsync(int userId)
+    public async Task<Profile?> ReadAsync(int userId, CancellationToken cancel = default)
     {
         var profiles = await _context.Profiles
             .FromSqlRaw("SELECT * FROM FNMWF_GET_PROFILES ({0})", userId)
-            .ToListAsync();
+            .ToListAsync(cancel);
 
         if (profiles == null || profiles.Count == 0)
         {