namespace ET.Server
{
    [FriendOf(typeof(BagComponent))]
    public static class BagNoticeHelper
    {
        public static void NotifyItemChange(Player player, ItemUnit unit)
        {
            Session session = player?.GetComponent<PlayerSessionComponent>()?.Session;
            if (session == null || unit == null)
            {
                return;
            }

            Item_ItemInfo notice = Item_ItemInfo.Create();
            notice.item = BagMapper.ToProto(unit);
            session.Send(notice);
        }

        public static void NotifyItemRemove(Player player, long itemIndex)
        {
            Session session = player?.GetComponent<PlayerSessionComponent>()?.Session;
            if (session == null)
            {
                return;
            }

            Item_RemoveItem notice = Item_RemoveItem.Create();
            notice.itemIndex = itemIndex;
            session.Send(notice);
        }

        public static void NotifyItemList(Session session, BagComponent bag)
        {
            if (session == null || bag == null)
            {
                return;
            }

            Item_ItemInfoList list = Item_ItemInfoList.Create();
            foreach (EntityRef<ItemUnit> unitRef in bag.ItemMap.Values)
            {
                ItemUnit unit = unitRef;
                list.items.Add(BagMapper.ToProto(unit));
            }
            session.Send(list);
        }
    }
}