ref: project structure

application/Users/Commands/UpdateUser.cs

@@ -0,0 +1,36 @@
+using AutoMapper;
+using MediatR;
+using mws.backend.dotnet.application.Common;
+using mws.backend.dotnet.application.Permissions;
+
+namespace mws.backend.dotnet.application.Users;
+
+public record UpdateUserCommand(Guid ActorUserId, Guid Id, UpdateUserRequest Request) : IRequest<UserDto>;
+
+public class UpdateUserHandler(IUnitOfWork uow, IPermissionService permissions, IMapper mapper)
+    : IRequestHandler<UpdateUserCommand, UserDto>
+{
+    private const string Screen = "users";
+
+    public async Task<UserDto> Handle(UpdateUserCommand command, CancellationToken ct)
+    {
+        await permissions.EnsureAsync(command.ActorUserId, Screen, PermissionAction.Edit, ct);
+
+        var user = await uow.Users.GetByIdWithRoleAsync(command.Id, ct)
+            ?? throw new NotFoundException("User not found");
+
+        var request = command.Request;
+        if (request.RoleId.HasValue)
+        {
+            var role = await uow.Roles.GetByIdAsync(request.RoleId.Value, ct)
+                ?? throw new BadRequestException("Role not found");
+        }
+
+        user.DisplayName = request.DisplayName.Trim();
+        user.IsActive = request.IsActive;
+        user.UpdatedAt = DateTime.UtcNow;
+
+        await uow.SaveChangesAsync(ct);
+        return mapper.Map<UserDto>(user);
+    }
+}