public IActionResult ChangePriority(int taskId, int priority, string direction, int selectedCategory)
{
Task taskToMove = _context.Tasks.First(t => t.TaskId == taskId);
int priorityDirection = priority + ((direction == "up") ? -1 : 1);
Task taskNext = _context.Tasks.First(t => t.Priority == priorityDirection);
taskNext.Priority = priority;
taskToMove.Priority = priorityDirection;
_context.UpdateRange(taskToMove, taskNext);
_context.SaveChanges();
return RedirectToAction("GetList", new { categoryId = selectedCategory });
}