public async Task DeleteListItem(int listItemId)
{
var listItem = await _listItemService.GetAsync(listItemId);
if (listItem == null)
{
throw new NotFoundException("List item does not exist, or You don't have permissions to view it."); // TODO: Message
}
var list = await _listService.GetAsync(listItem.ListId, UserIdentityId);
if (list == null)
{
throw new NotFoundException("List does not exist, or You don't have permissions to view it."); // TODO: Message
}
listItem.IsDeleted = true;
_dbcontext.Update(listItem);
await _dbcontext.SaveChangesAsync();
await Clients.Group($"List_{list.Id}").DeleteListItemAsync(listItemId);
}