fix(API): added GetAll method to Folder Repository and controller

Lactose/Controllers/FolderController.cs

@@ -34,6 +34,19 @@ public class FolderController(
         return Ok();
     }
 
+    [HttpGet]
+    [Authorize(Roles = "Admin")]
+    public ActionResult<List<FolderFullDto>> GetAll() {
+        var accessLevel = authService.GetUserData(User)?.AccessLevel ?? EAccessLevel.User;
+
+        if (accessLevel != EAccessLevel.Admin) { return Unauthorized(); }
+        return Ok(
+            folderRepository.GetAll()
+                .Select(folder => folder.ToFolderDto())
+                .ToList()
+            );
+    }
+    
     [HttpGet("{id}")]
     [Authorize(Roles = "Admin")]
     public ActionResult<FolderFullDto> Get([FromRoute] Guid id) {

Lactose/Repositories/FolderRepository.cs

@@ -23,4 +23,6 @@ public class FolderRepository(LactoseDbContext context) : IFolderRepository {
     }
 
     public Folder? Get(Guid id) => context.Folders.Find(id);
+    
+    public IEnumerable<Folder> GetAll() => context.Folders;
 }

Lactose/Repositories/IFolderRepository.cs

@@ -31,4 +31,9 @@ public interface IFolderRepository {
     /// <param name="id">The ID of the folder to retrieve.</param>
     /// <returns>The folder with the specified ID.</returns>
     Folder? Get(Guid id);
-}
+
+    /// <summary>
+    /// Retrieves all folders.
+    /// </summary>
+    IEnumerable<Folder> GetAll();
+}