Refactor AuthController to use primary constructor

Refactored AuthController to use C# 12 primary constructor syntax for ILogger<AuthController> injection. Removed obsolete IUserService and IDirectorySearchService dependencies, their fields, and the old constructor. This streamlines the controller and prepares it for MediatR-based service handling.

EnvelopeGenerator.API/Controllers/AuthController.cs

@@ -11,29 +11,11 @@ namespace EnvelopeGenerator.API.Controllers;
 /// <summary>
 /// Controller verantwortlich für die Benutzer-Authentifizierung, einschließlich Anmelden, Abmelden und Überprüfung des Authentifizierungsstatus.
 /// </summary>
+/// <param name="logger"></param>
 [Route("api/[controller]")]
 [ApiController]
-public partial class AuthController : ControllerBase
+public partial class AuthController(ILogger<AuthController> logger) : 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>